Posted on 02/05/2022 2:56:29 PM PST by Kevmo
Summary of LENR research in Japan
Shinya Narita
Iwate University
Chief-in-directors, Japan CF Research Society
ARPA-E, Low-Energy Nuclear Reactions Workshop October 21, 2021
LENR experiments in Japan in the early days (~2000)
Various types of experiments had been conducted since just after the F-P announcements.
Representative experiments in 90s
Electrolysis
F-P type
Excess heat, Neutron emission, Nuclear products
Takahashi et al. Proc. of ICCF2 (1992)
Mizuno, Ohmori et al. DENKI KAGAKU (1996) 1160.
Ohmori et al. Current Topics in Electrochemistry, 5 (1997) 27.
Double structure cathode
Excess heat, Helium production
Arata et al. Jpn. J. Appl. Phys. 38 (1999) L774. Multi-Layered cathode
Transmutation products
Iwamura et al. Fusion Technology, 33 (1998) 476.
Deuterium gas loading/unloading
Multi-Layered metal
Excess heat, Helium production
Yamaguchi et al. Proc. of ICCF3 (1993) 179.
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LENR experiments in Japan (2000 ~)
From around ~2000, the following experiments have been mainly conducted;
Deuterium/Hydrogen absorption/desorption with nano-sized metal composite particles.
Deuterium/Hydrogen absorption/desorption with multi-layered metals complex.
Deuterium permeation with multi-layered metal complex.
From some view points, these experiments are characterized
Sample (host material)
nano-sized (fine-structured) metal
Composite materials
×
Experimental method
Gas loading/unloading
Gas permeation
×
Reactant
Deuterium
Hydrogen
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Measurement of temperature, heat balance --> Excess heat
Elemental analysis --> Nuclear transmutation
D/H charging experiment with nanocomposite particles (6 slides)
Collaboration with Technova Inc., Tohoku U, Nissan Motor Co. Ltd, Nagoya U, Kobe U, Kyushu U. Supported by New Energy and Industrial Technology Development Organization (NEDO-MHE project; 2015-2017)
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D/H charging experiment with nanocomposite particles
Current summary
For CNZ-type powders with hydrogen gas, about 200-300 W/kg excess power for a week has been achieved with 100% reproducibility under certain conditions.
The COP is in the range of 1.2-1.4.
Note that it is in the experiments for characterizing of the phenomena. (Experimental procedures or sample conditions have not been optimized)
Typical excess power is 10-100 MJ/mol-H (10-100 keV/H).
Note that the value “mol-H” here is total amount of absorbed H in the time-interval of excess power observation. But the hydrogen spent for the reaction is considered to be a small fraction of it. Therefore, the excess power per mol-H is underestimated.
⇒ Nuclear reaction origin. (the energy is typically ~ 1-10MeV/H) Non-nuclear explanations should be still considered.
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Sample and operation conditions for improving the efficiency and the released energy are still under study.
− Sample condition and impurity control; microscopic analysis of the sample by various methods comparing before and after experiments.
− Experimental condition; temperature of absorption/desorption.
Excess heat experiments using a nano- sized multilayer composite
Tohoku U and CLEAN PLANET Inc.
Based on the previous experiments, the following considerable factors were focused ; Nano-sized particles/multilayer, metal composite, H/D diffusion.
The excess energy for 6(Cu/Ni) was the largest.
The released energy per hydrogen atom was on the order of keV or more.
⇒ The phenomenon cannot be explained by a chemical reaction.
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Current summary
The excess power of ~1 GJ/mol-H (~ 10 keV/H) has been observed.
The excess heat is observed with almost 100% reproducibility if the experiment is repeated under the same conditions. However, at the present, there is still variation in the power by experiment.
The ratio of the output power to the total input power is 1 ~ 2, currently.
At present, the excess energy per H is calculated assuming the reaction is attributed to total amount of hydrogen absorbed. In fact, only some of those hydrogens are considered to react. Therefore, the excess power shown is underestimated.
The released energy in order of > 10keV/H is difficult to be explained by a chemical reaction.
Deuterium permeation experiment using Pd multilayer thin film (4 slides)
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Current summary
A reaction considered nuclear transmutation has been observed in deuterium permeation with nanostructured Pd/CaO multilayer sample. (It is confirmed by various elemental analysis methods)
Transmutation reactions have been confirmed, such as:
13355 𝐶𝑠 → 14159 𝑃𝑟 13756 𝐵𝑎 → 14962 𝑆𝑚 18274 𝑊 → 19078 𝑃𝑡
Alkali and alkaline earth metals are likely to be transmutable by the present method.
2d, 4d, or 6d seem to react with the deposited elements.
Transmutation approach is much more sensitive to the occurrence of a nuclear reaction rather than excess heat measurement. Transmutation for a specific isotope was confirmed.
1 mg nuclear product → 100 mW released heat →could be an evidence of nuclear reaction
Y. Iwamura, “Cold Fusion”, ed. by J. Biberian, Elsevier, (2020) 191.
Other activities in Japan
Other experiments
PNZ-H experiment (Kyushu U, Waseda U, Nissan Motor Corp.)
Deuterium absorption/desorption experiment with laser irradiation (Kyoto U)
Deuterium desorption experiment using multilayer metal sample (Iwate U)
…
Japan CF-research society
Member: ~70, currently Objectives :
Contribute to science and technology development by studying CF phenomena, exchange information between JCF members and organize meeting for CF-research.
Annual meetings :
−The meeting has been held 21 times so far. (JCF1-JCF21) −The proceedings have been published for all meetings.
available online from JCF4 from the following link (open access) ; http://www.jcfrs.org/proc_jcf.html
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Summary
In Japan, LENR/CMNS research has been continuously and actively conducted.
In recent years, many important results have been obtained.
Deuterium/Hydrogen sorption/desorption with nano-sized metal composite particles and multilayered metals complex.
− Excess heat has been observed with good reproducibility − It has been observed with not only D but also H.
− Observed excess power implies that it is possible to be a nuclear reaction origin.
− Studies for improving the efficiency and increase in generated energy are on going by optimizing the conditions for sample treatment and the experimental procedure.
Deuterium permeation with multi-layered metal complex.
− Selective transmutation have been observed with good reproducibility.
− Clusters of deuterons are possibly involved in the reaction.
What is needed for further progress … (personal view)
Experiments in which conditions were systematically varied → clarify the trigger condition and the reaction mechanism.
Engineering study for demonstration of practical use of the reaction.
The Cold Fusion/LENR Ping List
http://www.freerepublic.com/tag/coldfusion/index?tab=articles
Keywords: ColdFusion; LENR; lanr; CMNS
chat—science
—
Vortex-L
http://tinyurl.com/pxtqx3y
Acronyms:
LENR: Low Energy Nuclear Reactions. [Also Lattice Enabled Nuclear Reactions, but seldom used]
CANR: Chemical Assisted Nuclear Reactions [fallen into disuse along with LANR/Lattice Assisted Nuclear Reactions]
CMNS: Condensed Matter Nuclear Science
LCF: Lattice Confined Fusion [NASA’s term for it]
AHE: Anomolous Heating Effect. Also PFAHE, for the Pons-Fleischmann AHE.
Best book to get started on this subject:
EXCESS HEAT
Why Cold Fusion Research Prevailed by Charles Beaudette
https://www.abebooks.com/9780967854809/Excess-Heat-Why-Cold-Fusion-0967854806/plp
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https://freerepublic.com/focus/f-news/3928396/posts
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This topic has a following, people who wish to learn and discuss the materials presented.
Please refrain from posting anything that doesn’t legitimately address the issue.
Something is going on in this segment of science. There are a considerable number of research groups studying the matter.
19 posted on 7/19/2021, 6:45:09 PM by Sidebar Moderator
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Thanks Kevmo. Good notes.
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