Akira Kitamura

Kobe University | Shindai · Faculty of Maritime Sciences

We have studied the so-called AHE (anomalous heat effect) by calorimetry of our C-system 1). The C-system was designed to make accurate detection of excess thermal power larger than several W/kg-sample. By our latest data with significant increase of excess thermal power of the MHE (nano-metal hydrogen energy) experiment, we have met to needs for i...

This 2011 paper becomes important to explain our 2021 MHE results on AHE generation mechanism in H-gas loading with Cu1Ni7/zirconia nano-composite catalyst. Discussions with brief summary of the Kobe group's gas-loading experiments in 2010 are given here for revisiting. Phenomenological modeling on mechanisms are made for explaining observed anoma...

In this ICCF23 talk, we review our R&D works on nano-metal hydrogen energy (MHE) in 2018-2020, after the 2015-2017 NEDO-MHE Project [1, 2]. Major issues that we have obtained [3, 4, 5, 6] are as follows: 1) Hydrogen Gas Loading Method using Nano-Metal Composite powders (Ni based binary nano-islands) at elevated temperature has provided reproducible...

Repeatability of anomalous heat effect (AHE) by the interaction of nano-composite PNZ6 (Pd1Ni10/zirconia) sample and D-gas at ca. 300°C RC (reaction chamber) condition was studied by making repeated calcination of sample after D-charging experimental runs. D-loading ratios (D/Ni) at room temperature changed as 3.5, 0.8 and 0.08 for the first, secon...

Repeatability of anomalous heat effect (AHE) by the interaction of nano-composite PNZ6 (Pd1Ni10/zirconia) sample and D-gas at ca. 300°C RC (reaction chamber) condition was studied by making repeated calcination of sample after D-charging experimental runs. D-loading ratios (D/Ni) at room temperature changed as 3.5, 0.8 and 0.08 for the first, secon...

Synchrotron Radiation XRD and XAFS analyses were performed for PNZ6 sample in which anomalous heat effect (AHE) was observed remarkably in a series of collaborative studies performed by 6 parties to which present authors belong. Structural changes of PNZ6 with increasing temperature up to 600℃ under hydrogen atmosphere were revealed. In the as-synt...

Presentation file to be presented at the upcoming JCF19 Meeting, JCFRS, Iwate University, Nov.9-10 2018. Anomalous heat effect by nano-metal composite PNZ6 sample was studied by using repeated calcination treatment and D-gas charging at elevated temperature. 10W level excess thermal power sustaining for several weeks is observed repeatably for the...

Anomalous heat effect by interaction of hydrogen isotope gas and nanoparticles supported by zirconia, PdNi 10 /ZrO 2 ("PNZ6" and "PNZ6r") and PdNi 7 /ZrO 2 ("PNZ7k"), has been examined. Excess power of 3 ~ 24 W from PNZ6 at elevated temperature of 200 ~ 300 °C continued for several weeks. The PNZ6 and PNZ6r samples with Pd/Ni=1/10 generated much hi...

Anomalous heat effect by interaction of hydrogen isotope gas and metal nanocomposites supported by zirconia or by silica has been examined. Observed absorption and heat evolution at RT were not too large to be explained by some chemical processes. At elevated temperatures of 200 ~ 300C, most samples with binary metal nanocomposites produced excess...

This is the presentation file of T. Hioki et al work on material analysis of PNZ6 sample which showed significant AHE with long lasting and high power level excess thermal power, presented at ICCF21 Conference, June 3-8 2018 at Colorado State University, USA. The work was mainly done by a team of Nagoya University as a portion of the final report o...

This is ppt presentation by Yasuhiro Iwamura et at ICCF21 Conference, June 3-8, 2018, Colorado State University, USA. The content reflects AHE results and related observations mainly obtained at Tohoku University. It is a portion of the final report to the NEDO-MHE project Phenomenology and Controllability of New Exothermic Reaction between Metal a...

Presentation file of A. Takahashi et al at ICCF21, June 3-8, 2018, Colorado State University, USA is uploaded. The content of the presentation corresponds to our Technical Report on NEDO-MHE project Phenomenology and Controllability of New Exothermic Reaction between Metal and Hydrogen.

Anomalous heat effect by interaction of hydrogen isotope gas and nanoparticles supported by zirconia, PdNi10/ZrO2 ("PNZ6" and "PNZ6r") and PdNi7/ZrO2 ("PNZ7k"), has been examined. Excess power of 3 ~ 24 W from PNZ6 at elevated temperature of 200 ~ 300 °C continued for several weeks. The PNZ6 and PNZ6r samples with Pd/Ni=1/10 generated much higher e...

In order to investigate the CO2 absorption characteristics of the low- and high-density Li2TiO3 samples, X-ray diffraction (XRD), non-Rutherford backscattering spectroscopy (NRBS) and elastic recoil detection (ERD) analyses have been performed. Crystallographic structure of a sintered and CO2 exposed samples is decided by the XRD analysis, and the...

Presentation slides at JCF18 Meeting, 24-25 November 2017, Sendai Japan. Hydrogen isotope absorption by palladium and nickel-based nanocomposite samples has been examined as a collaborative work using the experimental apparatuses installed at Kobe University and Tohoku University in order to share scientific understanding of the anomalous heat effe...

Hydrogen isotope absorption characteristics of nanoparticles supported by silica, Pd/SiO2 ("PSf1") and CuNi10/SiO2 ("CNS3"), have been examined. Large absorption energy (1.30.3 eV/Pd) with large apparent loading ratio (LM = 2.6) was observed in the initial phase of the D-PSf1#1 run with D2 at room temperature, which could be ascribed to reduction...

We built a new experimental system to replicate and measure precisely the anomalous heat generation experiments reported by A. Kitamura and A. Takahashi et al [1]-[3]. A liquid hydrocarbon coolant enables us to use the flow-calorimetry method at temperatures higher than 373K. This system is based on the paper [1], but improved in regard to the numb...

Hydrogen isotope absorption by nickel-based binary nanocomposite samples has been examined in collaborative work in the new NEDO MHE project. The samples tested so far include Pd0.044Ni0.31Zr0.65 ("PNZ3" and re-calcined "PNZ3r") and Cu0.044Ni0.31Zr0.65 ("CNZ5"). Material characterization by XRD and STEM/EDS has revealed the (continued in next page)...

We built a new experimental system to replicate the anomalous heat generation experiments based on the papers by A. Kitamura and A. Takahashi. The system was developed in order to measure precisely heat generation using a flow-calorimetry method with liquid hydrocarbon coolant that enables us to measure at temperatures higher than 373 K. The Ni-bas...

Presented at 12th International Workshop on Anomalies in Hydrogen Loaded Metals, June 5-9, 2017, Costigliole d’Asti, Italy

Project Aim: to verify the existence of new exothermic reaction between nano-metals and hydrogen which will be applicable for future new clean energy source, and to study the controllability of generated thermal energy. In the following, brief summary of implementation and results by MHE-group Japan is described in designated R&D issues for two yea...

In order to investigate the CO2 absorption characteristics of the low- and high-density Li2TiO3 samples, X-ray diffraction (XRD) and non-Rutherford backscattering spectroscopy (NRBS) analyses have been performed. Crystallographic structure of a sintered sample is decided by the XRD analysis, and the NRBS analysis has evaluated the amount of CO2 abs...

We have reported the replication experiments of anomalous heat effect with D( or H) gas loading to Ni-based nano-composite metal samples, using a newly installed metal-hydrogen-energy apparatus system (MHE facility) at ELPH Tohoku University. First results obtained in 2016 July-August are presented.

Presentation slide at ICCF20 Conference

] Brief review of Technova-Kobe study (2008-2015) on anomalous heat effects (AHE) by interaction of nano-metals and D(H)-gas is presented in three parts. Part-I) D(H) isotopic effect by twin gas loading and calorimetry at room temperature is reviewed. Part-II) AHE by interaction of binary Ni-based nano-metals and H(D)-gas at 200-300 deg C is review...

] We built a new experimental system to replicate the anomalous heat generation experiments reported by A. Kitamura and A. Takahashi et al [1]-[5]. The system was developed in order to measure precisely heat generation using a flow-calorimetry method when hydrogen isotope gas, up to 1.0MPa, is loaded into Ni-based binary nano-composites. The loadin...

] Hydrogen isotope absorption by nickel-based binary nanocomposite samples has been examined as a collaborative work of NEDO new MHE project. The samples tested so far include Pd0.044Ni0.31Zr0.65 (" PNZ3 " and re-calcined " PNZ3r ") and Cu0.044Ni0.31Zr0.65 (" CNZ5 "). Material characterization by XRD and STEM/EDS has revealed the existence of cryst...

Hydrogen isotope absorption characteristics of Ni-based nano-composites supported by zirconia, Pd0.044Ni0.31/ZrO2 ("PNZt") and Cu0.044Ni0.31/ZrO2 ("CNZt"), have been examined. Large absorption / adsorption (sorption) energy of (1.6±0.2)×10 1 eV/atom-Pd or (2.3±0.9) eV/atom-D in the initial phase of the #1 run with D2 at room temperature was observe...

Ni-based binary nano-composite samples supported by mesoporous silica and single-component Ni samples were subjected to hydrogen absorption runs at various temperatures up to 350 °C. The former include Pd 0.016 Ni 0.070 /SiO 2 (PNSII) and Cu 0.011 Ni 0.077 /SiO 2 (CNS2), and the latter NiO/Ni (NN) and Ni/SiO 2 (NS). Only the binary nanocomposite sa...

Three kinds of Ni-based metal-oxide nano-composite samples, NiO/Ni (NN), Pd0.016Ni0.070/SiO2 (PNSII) and Cu0.011Ni0.077/SiO2 (CNS2), were subjected to hydrogen absorption runs at various temperatures up to 350 °C. At room temperature (RT) only the PNSII sample absorbed substantial amount of hydrogen with positive heat evolution. The virgin PNSII sa...

A mass-flow calorimetry system has been installed to investigate the excess power phenomenon at elevated temperatures. The first trial runs with a silica-included Cu·Ni nano-composite sample (CNS) containing 4.1 g of Ni showed an implication of a few days lasting excess power of 5 W/g-Ni. Next, a Cu·Ni·Zr oxide nanocomposite sample (CNZ4) containin...

Non-Rutherford backscattering spectroscopy (NRBS) for the composition analysis and X-ray diffraction (XRD) for the crystallographic structure analysis have been applied to the blanket candidate material, Li2TiO3, which is known to absorb CO2 though chemically stable. It is found that the amount of CO2 absorbed by atmospheric exposure of the low- an...

Combined NRBS (non-Rutherford backscattering spectroscopy) and NRA (nuclear reaction analysis) methods have been applied to Li2CO3 samples with Li of various isotopic compositions. Densities of the component elements as well as the isotopic composition of Li have been determined within an error of about 10% or less. The NRBS method has also been ap...

A new mass-flow calorimetry system has been installed to investigate the excess-power phenomena at elevated temperatures up to several hundred degrees C with an increased amount of the Ni-based nano-composite sample. The first trial runs with a silica-included Cu⋅Ni nano-composite sample (CNS) containing 4.1 gram of Ni showed an implication of a fe...

A new mass-flow calorimetry system has been installed to investigate the excess-power phenomena at elevated temperatures with an increased amount of the sample. The first trial runs with a silica-included Cu⋅Ni nano-composite sample (CNS) containing 4.1 gram of Ni showed an implication of a few-days-lasting excess power of 5 W/g-Ni. Next, a Cu⋅Ni⋅Z...

The severe accident of Fukushima 1 Nuclear Power Plant due to the Tohoku Region Pacific Coast Earthquake in 11 March 2011 caused wide contamination and pollution by radionuclides in Fukushima and surrounding prefectures. In the current JPR symposium, a group of plant scientists attempted to examine the impact of the radioactive contamination on wil...

The radionuclide status of wild plants and soil in the Fukushima area was investigated during the period May 2011 to October 2012, using an imaging plate (autoradiograms) or a high purity germanium detector. Analyses of autoradiograms showed that wild plants grown in March 2011 were strongly polluted with fallout released from the Fukushima 1 Nucle...

Accumulations of radionuclides in marine macroalgae (seaweeds) resulting from the Fukushima 1 Nuclear Power Plant (F1NPP) accident in March 2011 have been monitored for two years using high-purity germanium detectors. Algal specimens were collected seasonally by snorkeling at Nagasaki, Iwaki, Fukushima Prefecture (Pref.), Japan, ca. 50 km perimeter...

Non-Rutherford backscattering spectroscopy (NRBS), which allows for a greatly enhanced cross section for scattering, was used to analyze the atomic composition of Li-containing blanket material, 2.6-MeV proton beams were used as the probe beam to profile the atomic composition in the near-surface region down to about 2 μm. Li2TiO3 ceramics samples...

We observed anomalous excess heat release from the Ni-based nano-compound samples at temperatures higher than 500K. The η value defined as the output energy per one hydrogen isotope atom absorbed/adsorbed showed anomalously large values exceeding 100 eV/atom-H for the Cu-Ni/ZrO 2 samples, and the integral output energy reached 800 eV/atom-Ni. Since...

The effect of mesoporous-silica-inclusion of Pd nanoparticles (PSII sample) and Pd⋅Ni nanoparticles (PNS sample) on repeated use for hydrogen absorption characteristics has been examined. The room-temperature runs of as-received PSII samples showed very large loading ratio D(H)/Pd reaching 3.5 and 1 st-phase absorption energy E 1 exceeding 2.5 eV/a...

The concentration of ions in plant cells and tissues is an essential factor in determining physiological function. In the present study we established that concentration gradients of mobile ions exist in both xylem exudates and tissues within a barley (Hordeum vulgare) primary leaf. For K+ , and NO3 - , ion concentrations generally decreased from t...

Stability of hydrogen in diamond-like carbon (DLC) film under simulated space environment, i.e., hyperthermal atomic oxygen, vacuum ultraviolet (VUV) and soft X-ray exposures has been studied. Hydrogen in DLC was released by exposure to low-energy atomic oxygen beam, whereas the gasification reaction of carbon atom needed collision energy above 3 e...

To study the anomalous heat effect of Ni-based binary-metal-nano-powder samples by gas-phase hydrogen isotope absorption/desorption, three kinds of samples CNZ, CNZ-II and NZ were tested for the temperature range 300-573 K. The highest excess heat power, ca. 2W/g-Ni was obtained with CNZ at 573 K. Peculiar H(D)-isotopic effect and sudden heat sink...

Presentation slides at NI-Week Big Physics & Science Summit, August 7-8, 2012, Austin Convention Center, USA

Using a nano-composite sample of NiCuZr oxide, it has been confirmed that nickel does not make observable absorption of hydrogen at room temperature. Preliminary results show that absorption of both D and H is possible at a temperature above 373 K, and the loading ratios reach about 1.0 at 525 K. As for the heat balance, the endothermic tendency...

To prevent agglomeration of nano-particles of Pd under repeated use for heat generation by gas-phase hydrogen isotope absorption, we have used silica-included Pd nano-particles. Similar results were repeatedly obtained in the repeated runs after repeated oxidization-hydridation cycles, which means that the sample structure prevents the clumping tog...

Using a nano-composite sample of NiCuZr oxide, it has been confirmed that nickel does not make observable absorption of hydrogen at room temperature. Preliminary results show that absorption of both D and H is possible at a temperature above 373 K, and the loading ratios reach about 1.0 at 525 K. As for the heat balance, the endothermic tendency...

There is an urgent need to reduce emission of the particulate matter (PM) in the exhaust gas from ship diesel engines causing various health hazards and serious environmental pollution. Usually the heavy fuel oil (HFO) for ships is of low quality, and contains various kinds of impurities. Therefore, the emission of PM along with exhaust gas from sh...

The graft polymerization method is one of the most effective techniques to produce a new polymer with unique function. To produce the polymer, we conducted experiments on radiation graft polymerization using ion beams of several hundred keV energy. A high density polyethylene (PE) film was irradiated with H+ beams, then, graft polymerization with m...

Charging phenomenon caused by ion implantation into the photo-resist has been evaluated with use of a surface potential measurement tool to clarify the mechanism of burst-like discharge of the accumulated charge in medium current implantation machines. The molecular bond of the photo-resist is cleaved by the kinetic energy of the implanted impurity...

Discussions with brief summary of the Kobe group's experiments are given. Phenomenological modeling on mechanisms are made for explaining observed anomalies in D(H)-overloading and high heat-power release rates from nano-palladium-particles and binary metal PdNi nano-particles dispersed in/on ZrO 2 ceramics supporter flakes under D(H)-gas loading a...

Presntation slides at Americal Chemical Scoiety 2011 March Meeting, New Energy Technolgy Symposium, are uploaded. Experimental data of AHE by interaction of Pd and Pd-Ni nano-particles and D(H)-gas at room temperature are given with phenomenological model analysis of reactions. The AHE data here are some detail of the Part-I section of our recent c...

Deuterium and protium gas absorption/adsorption by 0.1 -μmiφ Pd powder f PP), Pd-black (PB), Pd nano-particles (∼lOnm0) admixed with ZrO2 (PZ) and Pd-Ni binary nano-particles (∼2 nmφ) dispersed in ZrO2 holder-flakes (PNZ2B) has been examined. For the PP, the PB and the PZ samples, both the deoxidized samples and those reused without baking process...

We have applied spectroscopic ellipsometry (SE) to measure pre-amorphized layer thickness and interface quality of high-dose shallow implanted silicon as a non-destructive, in line implant monitoring technique. The thickness of pre-amorphized layers formed under various ion implantation conditions was estimated by SE, high resolution Rutherford bac...

Two orders of magnitude improvement have been accomplished in detection limit of areal density of impurity atoms introduced into semiconductor devices during ion implantation, for the evaluation of the crossing contamination.Impurity atom concentrations as low as 1 × 10¹² cm^-2 can be successfully detected using these new metho...

We have applied spectroscopic ellipsometry (SE) to measure amorphized layer thickness after implantation and solid phase re-growth at low annealing temperatures as a non-destructive, in line implant monitoring technique. The SE measurement treats the heavily damaged layer as a part of the amorphized layer. And it is an area very sensitive to the te...

To expand the application range of heavy ion beam probe measurement in the Large Helical Device (LHD), it is important to increase the probing beam current. The current can be increased by improving the charge exchange efficiency in a gas cell. Experiments were conducted on a tandem accelerator at Kobe University, 5SDH-2, which allows various exper...

A twin system for hydrogen absorption experiments has been constructed to replicate the phenomenon of heat and 4He generation by D2 gas absorption in nano-sized Pd powders reported by Arata and Zhang, and to investigate the underlying physics. For Pd⋅Zr oxide nano-powders, anomalously large energies of hydrogen isotope absorption, 2.4±0.2 eV/D-atom...

Presentation slides at American Chemical Society 2009 Annual Meeting New Energy Technology Session, Salt Lake Sity, USA

A twin system for hydrogen-isotope absorption experiments has been constructed to replicate the phenomenon of heat and 4He generation by D2 gas absorption in nano-sized Pd powders reported by Arata and Zhang, and to investigate the underlying physics. For Pd×Zr oxide nano-powders, anomalously large energies of hydrogen isotope absorption, 2.4 ±0.2...

Tributyltin (TBT) released into seawater from ship hulls is a stable marine pollutant and obviously remains in marine environments. We isolated a TBT resistant marine Pseudoalteromonas sp. TBT1 from sediment of a ship's ballast water. The isolate (10(9.3 +/- 0.2) colony-forming units mL(-1)) adsorbed TBT in proportion to the concentrations of TBTCl...

The isolate, Pesudoalteromonas sp. TBT1, could grow to overcome the toxicity of tributyltin chloride (TBTCl) up to 30 microM in the absence of Cl(-) in the medium until the cells reached an exponential phase of growth. The viability, however, was reduced after the cells reached a stationary phase. The degradation products, such as dibutyltin (DBT)...