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Measurement of a very low neutron background within a significant gamma‐ray environment by means of a coincidence spectrometer with n‐γ pulse‐shape discrimination
S. Affatato, A. Bertin, M. Bruschi, D. Bulgarelli, V. M. Bystritsky, M. Capponi, I. D’Antone, S. De Castro, D. Galli, U. Marconi, I. Massa, M. Morganti, C. Moroni, M. Piccinini, M. Poli, N. Semprini‐Cesari, M. Villa, A. Vitale, G. Zavattini, and A. Zoccoli
AIP Conference Proceedings 228, 3 (1991); https://doi.org/10.1063/1.40709
We present the results of measurements of the gamma‐ray and neutron background in the Gran Sasso Laboratory, which were performed by a novel coincidence spectrometer allowing neutron identification by means of two different stages of pulse‐amplitude analysis.
Comment on a experiment at Yale on cold fusion
Alan N. Anderson, and Steven E. Jones
AIP Conference Proceedings 228, 24 (1991); https://doi.org/10.1063/1.40697
Comments are presented on the experiment conducted at Yale in August 1989 to search for neutron emission from D2‐gas loaded metals. (AIP)
Neutron measurements in search of cold fusion
R. E. Anderson, C. A. Goulding, M. W. Johnson, K. B. Butterfield, S. Gottesfeld, D. A. Baker, T. E. Springer, F. H. Garzon, R. D. Bolton, E. M. Leonard, and T. Chancellor
AIP Conference Proceedings 228, 43 (1991); https://doi.org/10.1063/1.40664
We have conducted a search for neutron emission from cold fusion systems of the electrochemical type and, to a lesser extent, the high‐pressure gas cell type. Using a high‐efficiency well counter and an NE 213 scintillator, the experiments were conducted on the earth’s surface and in a shielded cave approximately 50 ft underground. After approximately 6500 h of counting time, we have obtained no evidence for cold fusion processes leading to neutron production. However, we have observed all three types of neutron data that have been presented as evidence for cold fusion: large positive fluctuations in the neutron counting rate, weak peaks near 2.5 MeV in the neutron energy spectrum, and bursts of up to 140 neutrons in 500‐μs intervals. The data were obtained under circumstances that clearly show our results to be data encountered as a part of the naturally occurring neutron background, which is due primarily to cosmic rays. Thus, observing these types of data does not, of itself, provide evidence for the existence of cold fusion processes. Artifacts in the data that were due to counter misbehavior were also observed to lead to long‐term ‘‘neutron bursts’’ whose time duration varied from several hours to several days. We conclude that any experiments which attempt to observed neutron emission must include strong steps to ensure that the experiments deal adequately with both cosmic‐ray processes and counter misbehavior.
Measurements in the Gran Sasso Laboratory: Evidence for nuclear effects in electrolysis with Pd/Ti and in different tests with deuterated high temperature superconductors
F. Celani, A. Spallone, L. Liberatori, B. Stella, F. Ferrarotto, M. Corradi, P. Marini, S. Fortunati, and M. Tului
AIP Conference Proceedings 228, 62 (1991); https://doi.org/10.1063/1.40681
Several experiments were performed at the INFN Underground Gran Sasso Laboratory (Italy) in order to detect nuclear signals, if any, coming from deuterated materials in the framework of so called ‘‘Cold Fusion.’’ We followed three, quite different, lines of experimental researches.In the first set of experiments we used electrolytic solutions of heavy water and 0.1 M LiOH with some addition of gaseous CO2, using as cathode a rod of pure Pd or Ti alloys and as anode a Pt net. We detected several intense bursts of gamma rays, lasting up to 15 minutes of duration time, with energy less than 300 KeV.In the second set of experiments we used pellets of sintered High Temperature Superconductors (HTSC) that underwent deuteration by high pressure (∼30 Bar) and temperature (∼370 K) gas loading procedure. The deuterated samples were several times cycled down to liquid nitrogen temperature and we detected by two independent 3He moderated neutron detectors (1.2% total efficiency), sporadic emission of signals mainly during these thermal cycles.Later on similar tests were performed independently by S. E. Jones and collaborators (Provo Univ., Utah) in a deep underground mine and a very intense and short neutron burst was detected by 16 independent 3He moderated neutron detectors (32% efficiency).In the third set of experiments some additional tests were performed using a low activity Am‐Be neutron source, in order to study possible phenomena of enhanced neutron emission by radiation stimulation in these HTSC deuterated compounds. We detected excess counts of 2 static standard deviations, pointing to increased D‐D cross section due to the effect of ceramic lattice.
Emission of neutron bursts from a titanium‐deuterium gas system in a high‐efficiency low‐background experimental setup
A. De Ninno, F. Scaramuzzi, C. Pontorieri, and P. Zeppa
AIP Conference Proceedings 228, 122 (1991); https://doi.org/10.1063/1.40712
The emission of neutrons from a titanium‐deuterium gas system has been detected by us in experiments performed in the Spring of 1989. One of the most striking features was the structure in bursts (duration of about 100 μs) of the neutron emission. Using a detection system proposed by H. Menlove, suitable to analyze the structure in bursts of the emission, a preliminary set of measurements has been performed with satisfactory results. A better tailored detector is now in use, and measurements in a low neutron background are being started. The first data about background and calibration measurements for this experiment will be reported.
Nuclear effects in electrolytically deuterated Ti and Pd electrodes
F. Fernández, J. Sevilla, B. Escarpizo, and C. Sánchez
AIP Conference Proceedings 228, 130 (1991); https://doi.org/10.1063/1.40713
We describe in this communication experiments accomplished since September 1989 with Ti and Pd cathodes. In several runs nuclear products above background levels were detected. Results together with experimental details are discussed. The quality of nuclear detection is considered, by describing the calibration procedures as well as spurious factors that can lead to misleading interpretations.
Observation of nuclear particles and their correlation with acoustic and electromagnetic emission from palladium targets loaded by deuterium
P. I. Golubnichyi, A. D. Philonenko, A. A. Tsaric, E. P. Kovalchuk, G. I. Merzon, and V. A. Tsarev
AIP Conference Proceedings 228, 146 (1991); https://doi.org/10.1063/1.40714
Neutron emission from a palladium target electrolytically loaded by deuterium was recorded. The emission was composed of several short (≤1 min) bursts each containing of the order of 10–102 neutrons superimposed on a weak (∼1 min−1) sporadic single neutron radiation. Two events with time correlation within 10 μs of proton, acoustic and radio emission were observed. The excess of tritium in the gas desorbed from the palladium target was found.
Recording of neutron and acoustic emissions from palladium target in a low background underground experiment
P. I. Golubnichyi, A. D. Philonenko, A. A. Tsaric, V. V. Kuzminov, B. V. Pritichenko, G. I. Merzon, and V. A. Tsarev
AIP Conference Proceedings 228, 151 (1991); https://doi.org/10.1063/1.40715
42 events of correlated neutron and acoustic emissions from the electrolytically deuterized palladium target were recorded in the course of the experiment which had been fulfilled at the Baksan underground low background Laboratory. The expected number of false correlations was estimated to be close to 5 events. The results obtained confirm the predictions of the acceleration model which connects the cold fusion process with fracturing a deuterized matter.
Neutron measurements on (Pd‐D2O) electrolytic cells under pulsed current conditions
J. R. Granada, R. E. Mayer, P. C. Florido, G. Guido, V. H. Gillette, S. E. Gómez, N. E. Patiño, and A. Larreteguy
AIP Conference Proceedings 228, 158 (1991); https://doi.org/10.1063/1.40690
We present in this work the results of neutron measurements performed on electrolytic cells containing deuterated Pd cathodes, using a high efficiency thermal neutron detection system in combination with a procedure involving a non‐stationary current through the cell’s circuit.Experiments carried‐out at our laboratory over a long period revealed a low level neutron production correlated with the current pulses, giving rise to characteristic patterns which were strongly dependent on the previous charging history of the cathodes employed.Another set of measurements was performed with essentially the same experimental set‐up, but on board a submarine 50 m under the sea surface. A very low background level was attained under these conditions, thus yielding a much improved signal‐to‐noise ratio as compared to our ground laboratory situation. The counting rates observed in the underwater measurements on cells containing deuterated Pd cathodes are well separated from those obtained in test (H2O) runs.
Investigations of mechanisms and occurrence of meteorologically triggered cold fusion at the Chinese Academy of Sciences
N. Hawkins, S. Sh Yi, X. Zh. Qi, X. D. Li, L. Wang, and Q. X. Zu
AIP Conference Proceedings 228, 177 (1991); https://doi.org/10.1063/1.40691
Morrison’ at CERN notes regional variation in fusion cell results and various workers have ascribed this to possible sociological factors. In view of the observation by other workers of gamma and neutrons from electric storms, the present paper seeks physical causes of such variation in terms of meteorological conditions.Previous work on Abrikosov vortices (rotating strings of electron Cooper pairs responsible for Type‐II superconductivity) and their possible availability in near or actual electric storm conditions is reviewed. This work suggests fusion may be found in certain standard open cells, but not where lack of meteorological availability or the use of closed cells prevents the Abrikosov vortices being available inside the apparatus.No general method of direct testing for Abrikosov vortices is known, so no opinion for or against these ideas is offered. Tests made at the Chinese Academy of Sciences for the presence of meteorological triggers (of any type) for fusion events are described. Both continuous and short‐burst fusion are reported to occur if, and only if, the meteorological trigger‐conditions are present.This is taken as being possibly the first observation of meteorological triggers for cold fusion and the first reported observation of continuous fusion from this source. Various possible causal mechanisms behind the detailed results are discussed. A future experimental program to confirm and further define these effects is outlined.No claim can yet be made for definite confirmation of the Abrikosov vortex hypothesis, or any other cold fusion trigger or reaction details.
Experimental study on anomalous neutron production in deuterium/solid system
He Jianyu, Zhu Rongbao, Wang Xiaozhong, Lu Feng, Luo Longjun, Liu Hengjun, Jiang Jincai, Tian Baosheng, Chen Guoan, Yuan Yuan, Dong Baiting, Yang Liucheng, Qiao Shengzhong, Yi Guoan, Guo Hua, Ding Dazhao, and H. O. Menlove
AIP Conference Proceedings 228, 193 (1991); https://doi.org/10.1063/1.40693
A series of experiments on both D2O electrolysis and thermal cycle of deuterium absorbed Ti Turnings has been designed to examine the anomalous phenomena in Deuterium/Solid System. A neutron detector containing 16 BF3 tubes with a detection limit of 0.38 n/s for two hour counting was used for electrolysis experiments. No neutron counting rate statistically higher than detection limit was observed from Fleischmann & Pons type experiments. An HLNCC neutron detector equipped with 18 3He tubes and a JSR‐11 shift register unit with a detection limit of 0.20 n/s for a two hour run was employed to study the neutron signals in D2 gas experiments. Different material pretreatments were selected to review the changes in frequency and size of the neutron burst production. Experiment sequence was deliberately designed to distinguish the neutron burst from fake signals, e.g. electronic noise pickup, the cosmic rays and other sources of environmental background. Ten batches of dry fusion samples were tested, among them, seven batches with neutron burst signals occurred roughly at the temperature from −100 degree centigrade to near room temperature. In the first four runs of a typical sample batch, seven neutron bursts were observed with neutron numbers from 15 to 482, which are 3 and 75 times, respectively, higher than the uncertainty of background. However, no bursts happened for H2 dummy samples running in‐between and afterwards and for sample batch after certain runs.
In quest of a trigger mechanism for neutron emissions from deuterium/solid systems
S. E. Jones, D. Bennion, D. Buehler, J. B. Czirr, D. L. Decker, J. Harb, R. Hunter, G. L. Jensen, E. P. Palmer, W. Pitt, S. Taylor, J. Thorne, D. Tolley, and J. C. Wang
AIP Conference Proceedings 228, 206 (1991); https://doi.org/10.1063/1.40694
The triggering of neutron emission in electrolysis experiments has not been achieved. (AIP)
Stress‐induced uphill diffusion of deuterium in palladium
Jacob Jorné
AIP Conference Proceedings 228, 236 (1991); https://doi.org/10.1063/1.40695
High concentrations of deuterium in palladium can be locally achieved due to the stress‐induced diffusion of deuterium against its concentration gradient. These high deuterium to palladium ratios, beyond the value attained at the boundaries, can locally increase the rate of nuclear fusion. Recent reports indicate that neutron bursts have been observed in systems where the deuterated palladium was subjected to stress gradients.
Anomalous heat output from Pd cathodes without detectable nuclear products
A. C. Klein, L. L. Zahm, S. E. Binney, J. N. Reyes Jr., J. F. Higginbotham, A. H. Robinson, M. Daniels, and R. B. Peterson
AIP Conference Proceedings 228, 247 (1991); https://doi.org/10.1063/1.40696
A series of experiments has been conducted to explore the effects of electrolyzing heavy water (D2O) using palladium and platinum electrodes. Over 40 weeks of experimental runs have been conducted in four cells which electrolyze heavy water using palladium and platinum electrodes. Tritium production, neutron and gamma radiation, and cell temperatures were monitored simultaneously and continuously throughout the runs. These experiments have resulted in seven elevated temperature events similar to those claimed by Pons and Fleischmann, with no correlating detection of nuclear products. The seven events which have occurred to date all take the same general form in which the apparent heat output of a cell, as seen in terms of the change in cell fluid temperature, increases in a distinct and significant step. A single light water cells, identical in all respects to those using heavy water, has been operated for over 15 weeks and has produced no temperature excursions, and also no nuclear products.
On the possibility of cold nuclear fusion in Fe‐Zr amorphous alloy
E. Kuzmann, A. Vértes, M. Varsányi, L. Kiss, L. Korecz, F. Deák, Á. Kiss, and T. Masumoto
AIP Conference Proceedings 228, 262 (1991); https://doi.org/10.1063/1.40698
We performed neutron, γ and Mössbauer spectroscopic experiments in order to study the possibility of cold nuclear fusion in Fe90Zr10 and Fe89Zr11 amorphous ribbons having high hydrogen absorbing ability. No significant changes in the neutron and γ spectra were found at deuterization performed at different cathodic potentials. The observed differences in the Mössbauer spectra of samples deuterized in air and in nitrogen atmosphere can be explained by decrease of deuterium uptake as well as by a small heat effect due to reaction of hydrogen with oxygen dissolved in water in the case of electrolysis carried out in air.
Neutron emission from low energy deuteron injection of deuteron‐implanted metal foils (Pd, Ti and In)
J. S. C. McKee, G. R. Smith, J. J. G. Durocher, K. Furutani, C. B. Kwok, H. L. Johnston, M. S. Mathur, J. K. Mayer, A. Mirzai, Y. H. Yeo, K. S. Sharma, and G. Williams
AIP Conference Proceedings 228, 275 (1991); https://doi.org/10.1063/1.40699
In examination of the possibility of observing D‐D fusion reactions at or near room temperature, our group at Manitoba has searched for an enhancement in the neutron production rate resulting from stopping deuterons interacting with implanted deuterons in a metal matrix. This non‐equilibrium process was selected as an alternative to electrolysis as a means of injecting the material. The deuterons were implanted into the metal matrix by a small high current accelerator which accelerated a mixed beam of D+ of energy 60 keV and molecular D2+ which upon dissociation at the surface of the metal yields two 30 keV D+ ions. The precise composition of the beam was unknown. The presence of neutrons was registered continuously during the experimental runs. Scintillation light was detected as the neutrons transferred a portion of their energy to protons in a large plastic scintillator detector. Anomalous occurrences were observed during the operation of the experiment, in the form of sudden increases in the observed neutron detection rates. We undertook to repeat the experiment under more controlled conditions, with the intent of resolving to our satisfaction whether anomalous neutron production was actually occurring. In addition, an attempt to measure X‐ray production within the target metal was made. The build up to deuterons in the metal matrix was such that where the density of deuterons in a commercially available TiD target would be expected to be on the order of 4×1028 m−3, our implantation scheme resulted in deuteron densities up to 2×1031 m−3 in the matrix. We argue that the loss of deuterons from the matrix will be small compared to build up rates. The results of our 1989 experiment are being compared with theory and the results of a more recent one (July 1990), currently under analysis. Funding has recently been obtained from our local electric utility, Manitoba Hydro, for the production of analyzed beams of D0, D+ and D2+ for future implantation experiments. Work in this area is now under way.
Reproducible neutron emission measurements from Ti metal in pressurized D2 gas
H. O. Menlove, M. A. Paciotti, T. N. Claytor, H. R. Maltrud, O. M. Rivera, D. G. Tuggle, and S. E. Jones
AIP Conference Proceedings 228, 287 (1991); https://doi.org/10.1063/1.40700
During the past year, we have measured neutron emission from samples of titanium (Ti) metal and sponge in pressurized D2 gas. In January 1990, we improved our sample preparation procedure and our detector sensitivity level so that the neutron‐emission measurements are now reproducible, but not yet predictable. We have measured excess neutron emission from the majority of our most recent samples using our high‐sensitivity neutron detectors. The improved sensitivity in our new detector system was obtained by using low‐radioactive‐background stainless steel tubes, a small detector volume with high efficiency, and additional cosmic‐ray shielding. Our most sensitive detector consists of two independent segments making up inner and outer rings of 3He tubes. The combined total efficiency is 44%. In addition to inner and outer ring segments, we have three separate detector systems operating in parallel control experiments to monitor environmental change. We have measured neutron bursts from a variety of samples containing Ti metal and D2 gas. The low‐multiplicity bursts, emitting from 2 to 10 n, occur much more frequently than the higher multiplicity bursts. By measuring high‐mass samples (300 g Ti) over several weeks, with many liquid nitrogen temperature cycles, we have detected neutron emission above the background from most of the samples with a significance level of 3 to 9 σ.
Statistical analysis of a ‘‘cold fusion’’ experiment
W. E. Meyerhof
AIP Conference Proceedings 228, 302 (1991); https://doi.org/10.1063/1.40701
Gas loaded D/Pd and H/Pd rods (1 mm diameter) were used to investigate correlated thermal and nuclear effects. Simultaneous measurements were made of gas pressure, electric current, voltage drops, rod and chamber temperature, and neutrons. D/Pd and H/Pd ratios were monitored by resistance changes in the rod segments. Two deuterium runs (totaling 3000+ hours), one hydrogen run (nearly 1000 hours), and background runs (nearly 2000 hours) have been completed. two neutron bursts were recorded in the first deuterium experiment. No bursts, but periods of increased activity, were observed in the second deuterium run. No increased activity was observed in the hydrogen experiment. Accurate agreement with Poisson counting statistics was found in the background and hydrogen runs. Neutron bursts observed in the first deuterium run exceeded, by several orders of magnitude, the Poisson prediction. A slight resistance increase in one rod segment was observed during one of the neutron bursts. No simultaneous increase in rod temperature was observed. Several potential triggering mechanisms were tried. Further experiments will examine an observed possible resonance‐like effect.
Neutron spectra from D2O–Pd cells with pulse electrolysis
A. Takahashi, T. Takeuchi, T. Iida, and M. Watanabe
AIP Conference Proceedings 228, 323 (1991); https://doi.org/10.1063/1.40703
Clear excess neutron counts and corresponding fast neutron spectra were measured in biased‐pulse electrolysis experiments with D2O–Pd cells. 2.45 MeV components by low energy d–d reactions were observed repeatedly. The spectra had sometimes mysterious higher energy components in the 3–6 MeV region, which could only be explained as the byproduct of 3‐body (d–d–d) fusion. The chaotic evolution of excess neutron counts and spectral shifts suggested that the competing process of 2‐body and 3‐body fusion would take place in the 0–2 mm depth of Pd cathode surface region. The hypothetical model of excitation screening effect could qualitatively explain the observed phenomena.
Neutron emission from deuterium‐loaded metals
K. L. Wolf, J. Shoemaker, D. E. Coe, and L. Whitesell
AIP Conference Proceedings 228, 341 (1991); https://doi.org/10.1063/1.40704
Experimental results are presented for neutron emission from cells that used several methods for deuterium loading of Pd and Ti metal samples. Most experiments have given negative results on the level relevant for a 5–6 per cent efficient NE213‐based detection system that has an average background of 0.5 n/m. Positive indications of weak neutron emission have been observed with a set of five Pd‐Ni electrolytic cells that use considerably more Pd than is usually the case. Three of these five cells produced a positive indication in a recent experiment which used a completely different type of neutron detector situated in a deep mine for an environment free of cosmic rays. While the present experiments do not constitute a proof of neutron emission in cold fusion, the evidence for the effect is encouraging. It must be demonstrated that other cells can be constructed that utilize the same type of material, and that the effect can be scaled up to higher levels.
Nuclear fusion induced by the controlled out‐transport of deuterons in palladium
Eiichi Yamaguchi, and Takashi Nishioka
AIP Conference Proceedings 228, 354 (1991); https://doi.org/10.1063/1.40705
We present a new technique for inducing anomalous nuclear effects in solid systems. The key factor of this method is to place thin film oxides on a surface of deuteron‐loaded palladium (Pd:D) plate. The oxides provide the surface barriers for ionic transport of deuterons. The controlled out‐transport of deuteron atoms then produces D accumulation layers at the Pd surfaces. By using this ‘‘surface‐barrier’’ technique, we have observed gigantic neutron bursts of (1–2×106 n/s, explosive gas release, uniform biaxial bending caused by plastic deformation, and excess heat evolution, all at the same time, from oxide/Pd:D/Au systems set in a vacuum chamber. We have also observed the latter three phenomena by applying this method to Pd:H systems having the same heterostructures. This is the first evidence for the fact that the excess heat production is not caused by D–D reactions.
Observation of charged particle bursts from deuterium loaded thin titanium foils
F. E. Cecil, H. Liu, D. Beddingfield, and C. S. Galovich
AIP Conference Proceedings 228, 375 (1991); https://doi.org/10.1063/1.40706
Intense bursts of energetic charged particles from deuterium gas loaded thin foils of Ti 662 subject to fairly high D.C. electric currents and non‐equilibrium thermal conditions have been observed. The energies of the particles range from less than 1 MeV to greater than 10 MeV. By observing energy shifts through thin foils of Al, the particles are tentatively identified as tritons, 3He, and possibly alpha particles. Control measurements carried out with comparably prepared Ti‐H samples evinced no particle bursts.
Search for energetic charged particle reaction products during deuterium charging of metal lattices
G. P. Chambers, G. K. Hubler, and K. S. Grabowski
AIP Conference Proceedings 228, 383 (1991); https://doi.org/10.1063/1.40707
Thin titanium films have been bombarded with low energy (350–1000 eV) deuterium ions at high current density (0.4 mA/cm2) in an effort to produce fusion reactions at ambient temperatures. A silicon particle detector was used to observe possible reaction products. Evidence for nuclear reactions occurring at a rate of at least 10−16 events/deuteron pair/s is presented.
Preliminary results from the BYU charged‐particle spectrometer
Steven E. Jones, Troy K. Bartlett, David B. Buehler, J. Bart Czirr, Gary L. Jensen, and J. C. Wang
AIP Conference Proceedings 228, 397 (1991); https://doi.org/10.1063/1.40708
The detection system developed at Brigham Young University for charged‐particle studies is reported. (AIP)
The precursor of ‘‘cold fusion’’ phenomenon in deuterium/solid systems
Xingzhong Li, Shiyuan Dong, Keli Wang, Yueying Feng, Lee Chang, Chengmo Luo, Renyong Hu, Pingli Zhou, Dawei Mo, Yongfa Zhu, Chongli Song, Yingtang Chen, Minyan Yao, Chuang Ren, and Qiankun Chen
AIP Conference Proceedings 228, 419 (1991); https://doi.org/10.1063/1.40710
It is suggested to detect the precursor of the ‘‘cold fusion’’ phenomenon in deuterium/solid systems, in order to solve the problem of reproducibility. The results of the first step of the experiment are discussed. Electromagnetic radiation and energetic charged particles have been detected. It is shown that the surface condition has important impact on this phenomenon.
Search for charged‐particle d‐d fusion products in an encapsulated Pd thin film
E. López, B. Neuhauser, F. Ziemba, J. Jackson, E. Mapoles, J. McVittie, and R. Powell
AIP Conference Proceedings 228, 430 (1991); https://doi.org/10.1063/1.40729
Motivated by reports by Fleischmann and Pons and also Jones et al. of nuclear fusion occurring at room temperature, we attempted to look for charged particle reaction products from d‐d fusion in a deuterated palladium thin film. A silicon nitride encapsulated palladium thin film (340 nanometers thick and one square centimeter in area) was fabricated on top of a semiconductor particle detector and implanted with an 80 keV D2+ beam. The purpose of the nitride cap was to prevent deuterium from diffusing out or from being sputtered away during implantation. The detector temperature was maintained below 200 K in order to reduce pressure on the cap. During the first run of this experiment, after the ion implanter had been turned off, apparent charged particle pulses as well as bursts of activity in two nearby Geiger counters were observed with the film loaded to a nominal 150% deuterium‐to‐palladium ratio and a 1.3% does of 6Li. No spectrum was obtained because of equipment malfunction. In a second run no apparent charged particles pulses were observed, but a record of the neutron flux due to induced fusion during implantation suggested that the nitride cap had failed. More experimental runs are expected in the near future.