Authors:
S. GotoNiigata University Department of Chemistry, Faculty of Science 950-21 Niigata Japan

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D. KajiNiigata University Department of Chemistry, Faculty of Science 950-21 Niigata Japan

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H. KudoNiigata University Department of Chemistry, Faculty of Science 950-21 Niigata Japan

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M. FujitaTohoku University Cyclotron and Radioisotope Center 980 Sendai Japan

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T. ShinozukaTohoku University Cyclotron and Radioisotope Center 980 Sendai Japan

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M. FujiokaTohoku University Cyclotron and Radioisotope Center 980 Sendai Japan

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Abstract  

Isomeric yield ratios of 11 fission products were measured in the system of 13 MeV proton-induced fission of232Th by an on-line ion-guide isotope separator. It was found that the closed shell structures of primary fragments and their complementary fragments affect the isomeric yield ratios. Isomeric yield ratios of121Cd (11/2, 3/2+) and135Xe (11/2, 3/2+) were measured precisely in the proton energy range of 13 to 26 MeV to investigate their energy dependence. It was found that the isomeric yield ratios increased slightly with proton energy. The results were discussed in connection with the deformation of fission fragments and fission modes.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)

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