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Estimation of the spallation-residue angular momentum in p+Ta, Re reactions

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    SYSNO ASEP0101862
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JOstatní články
    TitleEstimation of the spallation-residue angular momentum in p+Ta, Re reactions
    TitleOdhad úhlového momentu spalačních reziduí v p+Ta, Re reakcích
    Author(s) Karamian, S. A. (RU)
    Adam, Jindřich (UJF-V) RID
    Source TitleCzechoslovak Journal of Physics. - : Springer - ISSN 0011-4626
    Roč. 53, - (2003), B381-B394
    Number of pages14 s.
    Languageeng - English
    CountryCZ - Czech Republic
    Keywordsprotons ; spallation ; radionuclides
    Subject RIVBG - Nuclear, Atomic and Molecular Physics, Colliders
    R&D ProjectsME 134 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    AnnotationYields 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.
    WorkplaceNuclear Physics Institute
    ContactMarkéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
    Year of Publishing2005
Number of the records: 1  

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