Deuteron-induced reactions on Ni isotopes up to 60 MeV

0461725 - ÚJF 2017 RIV US eng J - Článek v odborném periodiku
Avrigeanu, M. - Šimečková, Eva - Fischer, U. - Mrázek, Jaromír - Novák, Jan - Štefánik, Milan - Costache, C. - Avrigeanu, V.
Deuteron-induced reactions on Ni isotopes up to 60 MeV.
Physical Review C. Roč. 94, č. 1 (2016), č. článku 014606. ISSN 2469-9985. E-ISSN 2469-9993
Grant CEP: GA MŠMT(CZ) LM2011019; GA MŠMT LM2015076
Institucionální podpora: RVO:61389005
Klíčová slova: cross-section * deuteron breakup * compound nucleus
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 3.820, rok: 2016

The high complexity of the deuteron-nucleus interaction from the deuteron weak binding energy of 2.224 MeV is also related to a variety of reactions induced by the deuteron-breakup (BU) nucleons. Thus, specific noncompound processes as BU and direct reactions (DR) make the deuteron-induced reactions so different from reactions with other incident particles. The scarce consideration of only pre-equilibrium emission (PE) and compound-nucleus (CN) mechanisms led to significant discrepancies with experimental results so that recommended reaction cross sections of high-priority elements as, e.g., Ni have mainly been obtained by fit of the data. The unitary and consistent BU and DR account in deuteron-induced reactions on natural nickel may take advantage of an extended database for this element, including new accurate measurements of particular reaction cross sectionThe activation cross sections of Cu-64,Cu-61,Cu-60, Ni-65,Ni-57, and Co-55,Co-56,Co-57,Co-58,Co-58m,Co-60 nuclei for deuterons incident on natural Ni at energies up to 20 MeV, were measured by the stacked-foil technique and high-resolution gamma spectrometry using U-120M cyclotron of CANAM, NPI CAS. Then, within an extended analysis of deuteron interactions with Ni isotopes up to 60 MeV, all processes from elastic scattering until the evaporation from fully equilibrated compound system have been taken into account while an increased attention is paid especially to the BU and DR mechanisms. The deuteron activation cross-section analysis, completed by consideration of the PE and CN contributions corrected for decrease of the total-reaction cross section from the leakage of the initial deuteron flux towards BU and DR processes, is proved satisfactory for the first time to all available data.

Trvalý link: http://hdl.handle.net/11104/0261310