Мақола

Analysis of fragment mass distribution in asymmetric area at fission of 235U induced by thermal neutrons

V.P. PikulInstitute of Nuclear Physics, Tashkent, UzbekistanU. Yu. JovlievHeavy-Ion Physics Department, Institute of Nuclear Physics, Tashkent, UzbekistanYu. N. KoblikInstitute of Nuclear Physics, Tashkent, UzbekistanA. V. KhugaevInstitute of Nuclear Physics, Tashkent, UzbekistanA. I. MuminovHeavy-Ion Physics Department, Institute of Nuclear Physics, Tashkent, UzbekistanA. K. NasirovBogolyubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, RussiaK. V. PavliyHeavy-Ion Physics Department, Institute of Nuclear Physics, Tashkent, UzbekistanB. S. YuldashevInstitute of Nuclear Physics, Tashkent, Uzbekistan

Physics of Atomic Nucleijournal2005en

ABI

Аннотация

The fragment mass yields in fission of 235U induced by thermal neutrons for A = 145–160 and E K = 50–75 MeV were measured using a mass spectrometer. The fine structure is observed at A = 153, 154 and E K = 50–60 MeV. The obtained results were described in the framework of a model based on the dinuclear system concept. The analyzed correlation between the total kinetic energy and mass distribution of fission fragments is connected with the shell structure of the formed fragments of fission. From this correlation and the time dependence of the calculated mass distribution of the binary reaction products, one can conclude that the descent time from a saddle point to a scission point for the more deformed fragments is longer than that for fragments of more compact shape.

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Мавзулар

Nuclear physics research studies Nuclear Physics and Applications Nuclear reactor physics and engineering

Идентификаторлар

DOI: 10.1134/1.1866373

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