Isotope Effect in Hydrogen Diffusion in Copper
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概要
- 論文の詳細を見る
Hydrogen isotopes, H and D, were dissolved in excess in copper by means of the liq-uid hydrogen quenching technique and their diffusion process at temperatures be-tween 220 K and 350 K was studied by the electrical resistivity measurement. In thistemperature range, an abnormal mass effect in diffusion was observed. The activationenergies of diffusion of the isotopes were; f?=34.3 kJ/mol and E.=36.I kJ/mol forhydrogen and deuterium, respectively. The relation, E./E.< l, is not expected fromthe classical diffusion theory, and the ratio of diffusion constant, D./D., increasedwith decreasing temperature, exceeding the classical value, O, in the lowesttemperature region in the present experiment. The observed behaviour is explained bya tunneling diffusion mechanism as in the case of hydrogen diffusion in nickel.
- 社団法人日本物理学会の論文
- 1986-03-15
著者
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FUJITA Francisco
Department Materila Physics,Faculty of Engineering Science,Osaka University
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Fujita F
Osaka Univ. Toyonaka Jpn
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YAMAKAWA Kohji
Department of Material Physics,Faculty of Engineering Science,Osaka University
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NUNOGAKI Kazuki
Department of Material Physics,Faculty of Engineering Science,Osaka University
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Fujita Francisco
Department Materila Physics Faculty Of Engineering Science Osaka University
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Yamakawa K
Department Of Material Physics Faculty Of Engineering Science Osaka University:department Of Physics
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Yamakawa Kohji
Department Of Material Physics Faculty Of Engineering Science 0saka University
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Nunogaki Kazuki
Department Of Material Physics Faculty Of Engineering Science Osaka University
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