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Estimation of the spallation-residue angular momentum in p+Ta, Re reactions
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SYSNO ASEP 0101862 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Estimation of the spallation-residue angular momentum in p+Ta, Re reactions Title Odhad úhlového momentu spalačních reziduí v p+Ta, Re reakcích Author(s) Karamian, S. A. (RU)
Adam, Jindřich (UJF-V) RIDSource Title Czechoslovak Journal of Physics. - : Springer - ISSN 0011-4626
Roč. 53, - (2003), B381-B394Number of pages 14 s. Language eng - English Country CZ - Czech Republic Keywords protons ; spallation ; radionuclides Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders R&D Projects ME 134 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Annotation Yields and cross-sections for the radioactive isotope production have been, determined via gamma-activity measurements after irradiation of the Ta and Re targets by protons with energies from 100 to 660 MeV. Mass-distribution of the reaction products contains two wide peaks corresponded to the spallation and fission product nuclei, respectively. High-spin Hf and Lu isomers are among the detected nuclides. The spallation-residue angular momentum, I, has been estimated basing on the determined isomer-to-ground state ratio, sigma(m)/sigma(g), and using, known systematics of sigma(m)/sigma(g), versus I. Non zero value of spin I should increase a probability of fission. Measured fission-to-spallation ratio is indeed higher than predicted by the Monte Carlo code simulation without angular momenta in account. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2005
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