Fragmentation by .BETA.-decay in tritium-labelled compounds. II. Theoretical consideration on dissociation of daughter species in tritiated alkanes.:Theoretical Consideration on Dissociation of Daughter Species in Tritiated Alkanes
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概要
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The behaviors of CH<SUB>3</SUB>He<SUP>+</SUP> and C<SUB>2</SUB>H<SUB>5</SUB>He+ formed by the decay of CH<SUB>3</SUB>T and C<SUB>2</SUB>H<SUB>5</SUB>T were studied theoretically using the STO-3G molecular orbital method and was compared with that of HHe<SUP>+</SUP> in the decay of HT. It was clearly shown that the ground state daughter ions CH<SUB>3</SUB>He<SUP>+</SUP> and C<SUB>2</SUB>H<SUB>5</SUB>He><SUP>+</SUP> dissociate instantly to give CH<SUB>3</SUB><SUP>+</SUP> and C<SUB>2</SUB>H<SUB>5</SUB><SUP>+</SUP> because their poten-tial energy curves are repulsive, whereas the daughter ion HHe+ in the ground state does not dissociate. The transition probability to the ground state ions of CH<SUB>3</SUB>He+ and of C<SUB>2</SUB>H<SUB>5</SUB>He<SUP>+</SUP> are computed to be 66.5 and 64.8%, respectively. These values are in fairly good accordance with those obtained experimentally.
- 一般社団法人 日本原子力学会の論文
著者
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SHIOKAWA TAKANOBU
Department of Chemistry, Faculty of Science, Tohoku University
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SHIOKAWA TAKANOBU
Department of Cbemistry, Faculty of Science, Toboke University,
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YOSHIHARA KENJI
Department of Cbemistry, Faculty of Science, Toboke University,
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IKUTA Shigeru
The Institute of Physical and Chemical Research
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