Ternary particles from the reactions {sup 229}Th(n{sub th},f) {sup 233}U(n{sub th},f) and {sup 239}Pu(n{sub th},f)
- Physikalisches Institut, Auf der Morgenstelle 14, D-72076 Tuebingen (Germany)
- Institut fuer Kernchemie, Universitaet Mainz, D-55099 Mainz (Germany)
- Institut Lave-Langevin, F-38042 Grenoble (France)
Energy distributions and yields of ternary particles (TP's) emitted in the thermal neutron induced fission of {sup 229}Th, {sup 233}U and {sup 239}Pu have been determined. Special emphasis was put on the study of heavy ternary particles. The measurements were performed at the high flux reactor of the Institut Laue-Langevin (ILL). For identification of particles the mass separator Lohengrin and a {delta}E-E ionisation chamber were used. In the case of {sup 233}U(n{sub th},f) it was possible to detect 25 different TP's, with 19 of them having never been detected before in this reaction. For {sup 229}Th(n{sub th},f) all 17 TP's that were observed were new. From the reaction {sup 239}Pu(n{sub th},f) 21 out of 34 detected TP's were new. The energy distributions and yields of the TP's are given. The yields of TP's as a function of mass number depend on the mass of the decaying compound nucleus. Heavy TP's are increasingly favored in the decay of heavy mother nuclei.
- OSTI ID:
- 21202238
- Journal Information:
- AIP Conference Proceedings, Vol. 447, Issue 1; Conference: 2. international workshop on nuclear fission and fission-product spectroscopy, Seyssins (France), 22-25 Apr 1998; Other Information: DOI: 10.1063/1.56711; (c) 1998 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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