Thermalization related effects in the electrofission of preactinide nuclei

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.50.282· OSTI ID:7032880

Arruda-Neto, J D.T.; Saito, T; Sugawara, M; Tamae, T; Miyase, H; Abe, K; Takahisa, K; Konno, O; Oikawa, M ^[1]; Deppman, A; Simionatto, S ^[2]

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1. Laboratory of Nuclear Science, Tohoku University, Sendai (Japan)
2. Physics Institute, University of Sao Paulo, Sao Paulo (Brazil)

The absolute electrofission cross section of Au and Ta was measured in the energy interval 40--250 MeV. Pronounced inflexions of the ([ital e],[ital f]) curves are observed for both Au and Ta around 200--220 MeV, which are signatures of structures in the corresponding photofission cross-section curves. We show that these ([gamma],[ital f]) structures are originated in the stage of preequilibrium emissions in the nuclear thermalization process. The question associated to a possible connection between thermalization effects and competing photoexcitation mechanisms is addressed.

• OSTI ID: 7032880
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 50:1; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663300 -- Nuclear Reactions & Scattering
General-- (1992-)
663420 -- Lepton-Induced Reactions & Scattering-- (1992-)
663470* -- Fission-- (1992-)
663570 -- Nuclear Mass Ranges-- A=150-189-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
ELECTROFISSION
ELECTRON REACTIONS
ENERGY RANGE
FISSION
GOLD 197 TARGET
LEPTON REACTIONS
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
NUCLEAR REACTIONS
PHOTOFISSION
PHOTONUCLEAR REACTIONS
SLOWING-DOWN
TANTALUM 181 TARGET
TARGETS
THERMALIZATION