JOPSS - Search Results

Journal Articles

Hydrogen isotope separation by quantum tunneling of hydrons through graphene

Yasuda, Satoshi; Dio, W. A.*; Fukutani, Katsuyuki

Vacuum and Surface Science, 66(9), p.514 - 519, 2023/09

https://doi.org/10.1380/vss.66.514

Monolayer graphene, representative of atomically thin crystals, has recently shown unexpectedly high proton and deuteron permeability under ambient conditions. It also permeates (filters) hydrogen (deuterium) isotope ion with high selectivity. These results suggest possible ways of developing novel and efficient hydrogen isotope gas enrichment techniques for manufacturing silicon semiconductors, optical fibers, drug development, nuclear fusion, and other related applications. And yet, despite its importance, experimental studies remain scarce and the separation mechanism contentious. Here, we introduce our recent findings on how quantum tunneling of hydrons through graphene could account for the high hydron selectivity of graphene.

Journal Articles

Tunneling in high- isomeric decays

Shizuma, Toshiyuki; Shimizu, Yoshifumi*; Hayakawa, Takehito

Journal of Nuclear Science and Technology, 39(11), p.1137 - 1141, 2002/11

https://doi.org/10.3327/jnst.39.1137

Times Cited Count：4 Percentile：29.25(Nuclear Science & Technology)

We have systematically investigated the highly -forbidden transitions observed in the Hf, W and Os region, using the -tunneling model in which low- and high- states interact through a process of the quantum tunneling. In the present study, we have analyzed -forbidden transitions recently observed. The measured hindrance factors are compared with the values calculated using the -tunneling model. We have also investigated isotope dependences of tunneling probabilities particularly for neutron-rich nuclei.

Journal Articles

Theoretical study of kinetic isotope effects on rate constans for the H $_{2}$ +C $_{2}$ HH+C $_{2}$ H $_{2}$ reaction and its isotopic variants

Kurosaki, Yuzuru; Takayanagi, Toshiyuki

Journal of Chemical Physics, 113(10), p.4060 - 4072, 2000/09

https://doi.org/10.1063/1.1288173

Times Cited Count：22 Percentile：55.85(Chemistry, Physical)

no abstracts in English

Journal Articles

A theoretical study on an isotope effect in the CH $_{3}$ +H $_{2}$ CH $_{4}$ +H reaction

Kurosaki, Yuzuru*; Takayanagi, Toshiyuki

Chemical Physics Letters, 299(1), p.57 - 63, 1999/00

https://doi.org/10.1016/S0009-2614(98)01239-1

Times Cited Count：15 Percentile：43.56(Chemistry, Physical)

no abstracts in English

Journal Articles

Theoretical study of the non-Arrhenius temperature dependence of thermal rate constants for the H+H $_{2}$ SH $_{2}$ S+SH reaction

Kurosaki, Yuzuru; Takayanagi, Toshiyuki

Journal of Chemical Physics, 111(23), p.10529 - 10536, 1999/00

https://doi.org/10.1063/1.480406

Times Cited Count：13 Percentile：39(Chemistry, Physical)

no abstracts in English

Journal Articles

Decay of H $_{2-}$ anions in solid parahydrogen via two-stage quantum tunneling diffusion process

Kumada, Takayuki; *; *; Kumagai, Jun*; Aratono, Yasuyuki; Miyazaki, Tetsuro*

Journal of Low Temperature Physics, 114(5-6), p.413 - 429, 1999/00

no abstracts in English

Journal Articles

Observation of electron bubbles in para-H $_{2}$ -D $_{2}$ (HD) mixtures by high-resolution ESR spectroscopy

Kumada, Takayuki; *; Kumagai, Jun*; Aratono, Yasuyuki; Miyazaki, Tetsuro*

Journal of Physical Chemistry A, 103(45), p.8966 - 8968, 1999/00

https://doi.org/10.1021/jp991650w

Times Cited Count：13 Percentile：39(Chemistry, Physical)

no abstracts in English

Journal Articles

A Theoretical study of the prereaction process of the H…HF van der Waals molecule

Takayanagi, Toshiyuki; Kurosaki, Yuzuru*

Physical Chemistry Chemical Physics, 1, p.1099 - 1103, 1999/00

https://doi.org/10.1039/a808003h

Times Cited Count：22 Percentile：57.04(Chemistry, Physical)

no abstracts in English

Journal Articles

Ab initio MO calculations of potential energy surfaces of CCl $_{4}$ ; Is a C $_{2v}$ contact ion pair an isomer of Td-CCl $_{4}$ ?

Takayanagi, Toshiyuki; Kurosaki, Yuzuru*; *

Radiation Physics and Chemistry, 55(4), p.367 - 371, 1999/00

https://doi.org/10.1016/S0969-806X(99)00204-2

Times Cited Count：1 Percentile：13.12(Chemistry, Physical)

no abstracts in English

Journal Articles

Van der Waals resonances in cumulative reaction probabilities for the F+H $_{2}$ , D $_{2}$ , and HD reactions

Takayanagi, Toshiyuki; Kurosaki, Yuzuru*

Journal of Chemical Physics, 109(20), p.8929 - 8934, 1998/11

https://doi.org/10.1063/1.477563

Times Cited Count：51 Percentile：82.84(Chemistry, Physical)

no abstracts in English

JAEA Reports

Proceedings of the Meeting on Tunneling Reaction and Low Temperature Chemistry, 98 August; Tunneling reaction and its theory, August 3-4, 1998, JAERI, Tokai, Japan

Miyazaki, Tetsuro*; Aratono, Yasuyuki; *; *

JAERI-Conf 98-014, 99 Pages, 1998/10

JAERI-Conf-98-014.pdf:4.43MB

no abstracts in English

Journal Articles

Tunneling in the F+H $_{2}$ reaction and its isotopic variants; The effect of the Van der Waals potential

Takayanagi, Toshiyuki; Kurosaki, Yuzuru*

Chemical Physics Letters, 286(1-2), p.35 - 39, 1998/04

https://doi.org/10.1016/S0009-2614(97)01404-8

Times Cited Count：32 Percentile：70.02(Chemistry, Physical)

no abstracts in English

Journal Articles

Experimental observation of H $_{2-}$ anion and its para ortho conversion in solid para hydrogen using high-resolution ESR spectroscopy

Kumada, Takayuki; Aratono, Yasuyuki; Miyazaki, Tetsuro*

Journal of Low Temperature Physics, 111(3-4), p.509 - 514, 1998/00

no abstracts in English

Journal Articles

Quantum-mechanical tunneling in the H $_{2}$ elimination from 2,3-dimethylbutane cation: (CH $_{3}$ ) $_{2}$ CHCH(CH $_{3}$ ) $_{2+}$ (CH $_{3}$ ) $_{2}$ C=C(CH $_{3}$ ) $_{2+}$ +H $_{2}$ ; An ab initio molecular orbital study

Kurosaki, Yuzuru*; Takayanagi, Toshiyuki; Miyazaki, Tetsuro*

Journal of Molecular Structure; THEOCHEM, 452, p.209 - 218, 1998/00

no abstracts in English

JAEA Reports

An Example of nonlinear potential transmission; Multi-valued transmission and mode-jump

JAERI-Research 97-019, 8 Pages, 1997/03

JAERI-Research-97-019.pdf:0.46MB

no abstracts in English

Journal Articles

Theoretical calculations of potential energy surface and thermal rate constants for the H(Mu)+F $_{2}$ reaction

Takayanagi, Toshiyuki; Kurosaki, Yuzuru*

Journal of Physical Chemistry A, 101(38), p.7098 - 7104, 1997/00

https://doi.org/10.1021/jp971395k

Times Cited Count：33 Percentile：73.31(Chemistry, Physical)

no abstracts in English

JAEA Reports

Parametric enhancement of the transmission coefficient across a potential barrier

JAERI-M 92-059, 19 Pages, 1992/05

JAERI-M-92-059.pdf:0.47MB

no abstracts in English

Journal Articles

Effect of -ray irradiation on the recoil tritium reaction in xenon-hydrogen mixtures at 77 and 4.2K; Competition of the tunneling reaction with the combination reaction

Miyazaki, Tetsuro*; *; *; *; ; Aratono, Yasuyuki; Saeki, Masakatsu; Tachikawa, Enzo

Bulletin of the Chemical Society of Japan, 65, p.735 - 738, 1992/03

https://doi.org/10.1246/bcsj.65.735

Times Cited Count：4 Percentile：34.61(Chemistry, Multidisciplinary)

no abstracts in English

Journal Articles

Multi-dimensional tunneling and nuclear fission

Iwamoto, Akira

New Trends in Nuclear Collective Dynamics, p.125 - 141, 1991/00

no abstracts in English

Journal Articles

Isotope effect on hydrogen atom abstraction reaction by recoil tritium atoms in Xe-C $_{2}$ H $_{6}$ -C $_{2}$ D $_{6}$ mixtures at 77 K

; Tachikawa, Enzo; *; *; *; *

J.Phys.Chem., 87(7), p.1201 - 1204, 1983/00

no abstracts in English

Presentation/Publication Type

Journal/Book Title

Meeting title

First Author

Keyword

Language

Publication Year

Held year of conference

Hydrogen isotope separation by quantum tunneling of hydrons through graphene

Tunneling in high- isomeric decays

Theoretical study of kinetic isotope effects on rate constans for the H $_{2}$ +C $_{2}$ HH+C $_{2}$ H $_{2}$ reaction and its isotopic variants

A theoretical study on an isotope effect in the CH $_{3}$ +H $_{2}$ CH $_{4}$ +H reaction

Theoretical study of the non-Arrhenius temperature dependence of thermal rate constants for the H+H $_{2}$ SH $_{2}$ S+SH reaction

Decay of H $_{2-}$ anions in solid parahydrogen via two-stage quantum tunneling diffusion process

Observation of electron bubbles in para-H $_{2}$ -D $_{2}$ (HD) mixtures by high-resolution ESR spectroscopy

A Theoretical study of the prereaction process of the H…HF van der Waals molecule

Ab initio MO calculations of potential energy surfaces of CCl $_{4}$ ; Is a C $_{2v}$ contact ion pair an isomer of Td-CCl $_{4}$ ?

Van der Waals resonances in cumulative reaction probabilities for the F+H $_{2}$ , D $_{2}$ , and HD reactions

Proceedings of the Meeting on Tunneling Reaction and Low Temperature Chemistry, 98 August; Tunneling reaction and its theory, August 3-4, 1998, JAERI, Tokai, Japan

Tunneling in the F+H $_{2}$ reaction and its isotopic variants; The effect of the Van der Waals potential

Experimental observation of H $_{2-}$ anion and its para ortho conversion in solid para hydrogen using high-resolution ESR spectroscopy

Quantum-mechanical tunneling in the H $_{2}$ elimination from 2,3-dimethylbutane cation: (CH $_{3}$ ) $_{2}$ CHCH(CH $_{3}$ ) $_{2+}$ (CH $_{3}$ ) $_{2}$ C=C(CH $_{3}$ ) $_{2+}$ +H $_{2}$ ; An ab initio molecular orbital study

An Example of nonlinear potential transmission; Multi-valued transmission and mode-jump

Theoretical calculations of potential energy surface and thermal rate constants for the H(Mu)+F $_{2}$ reaction

Parametric enhancement of the transmission coefficient across a potential barrier

Effect of -ray irradiation on the recoil tritium reaction in xenon-hydrogen mixtures at 77 and 4.2K; Competition of the tunneling reaction with the combination reaction

Multi-dimensional tunneling and nuclear fission

Isotope effect on hydrogen atom abstraction reaction by recoil tritium atoms in Xe-C $_{2}$ H $_{6}$ -C $_{2}$ D $_{6}$ mixtures at 77 K