Fission product yields at intermediate energy

Journal Article · Mon Oct 26 04:00:00 EST 1998 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.56722· OSTI ID:21202254

Rubchenya, V A; Vakhtin, D N ^[1]; Aeystoe, J; Dendooven, P; Hankonen, S; Jokinen, A; Trzaska, W H; Wang, J C ^[1]; Evsenin, A V; Khlebnikov, S V; Kuznetsov, A V; Lyapin, V G; Osetrov, O I; Tiourin, G P ^[2]; Aleksandrov, A A; Penionzhkevich, Yu E ^[3]

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1. Department of Physics, University of Jyvaeskylae, FIN-40351, Jyvaeskylae (Finland)
2. V. G. Khlopin Radium Institute, St.-Petersburg 194021 (Russian Federation)
3. Flerov Laboratory of Nuclear Reactions, 149980, Dubna (Russian Federation)

The results of experimental and theoretical studies of fission product yields in proton-induced fission of {sup 238}U are presented. The yields of neutron-rich Ni, Cu, Zn, Ga and Ge--isotopes were measured by 25 MeV protons and the ion guide-based isotope separator technique. The pre-neutron emission fragment mass distributions were measured by protons at energies E{sub p}=20, 35, 50 and 60 MeV using time-of-flight method. The results indicate enhancement for superasymmetric mass division at intermediate excitation energy of the fissioning nucleus. A model calculation of fission products yields for fission of {sup 238}U by protons and neutrons is presented which predicts the formation cross sections for neutron-rich fission products. The influences of nuclear shells, odd-even effects and charge polarization are included in model description.

• OSTI ID: 21202254
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 447; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CROSS SECTIONS
EXCITATION
FISSION
FISSION FRAGMENTS
GERMANIUM ISOTOPES
MASS DISTRIBUTION
MASS SPECTRA
MEV RANGE
NEUTRON EMISSION
NEUTRON REACTIONS
NEUTRONS
NUCLEAR REACTION YIELD
POLARIZATION
PROTON REACTIONS
PROTON-NUCLEON INTERACTIONS
TIME-OF-FLIGHT METHOD
URANIUM 238 TARGET