Photofissility of [sup 232]Th measured with tagged photons from 250 to 1200 MeV

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.48.1785· OSTI ID:6392157

Bianchi, N; Deppman, A; De Sanctis, E; Fantoni, A; Levi Sandri, P; Lucherini, V; Muccifora, V; Polli, E; Reolon, A R; Rossi, P; Iljinov, A S; Mebel, M V; Arruda-Neto, J D.T. ^[1]; Anghinolfi, M; Corvisiero, P; Gervino, G; Mazzaschi, L; Mokeev, V; Ricco, G; Ripani, M ; Sanzone, M; Taiuti, M; Zucchiatti, A ^[2]; Bergere, R; Carlos, P; Garganne, P; Lepretre, A ^[3]

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1. Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, P.O. Box 13, I-00044 Frascati (Italy)
2. Istituto Nazionale di Fiscia Nucleare and Dipartimento di Fisica dell'Universita di Genova, I-16146, Genova (Italy)
3. DAPNIA/SPhN, CEN, Saclay, Gif-sur-Yvette Cedex 91191 (France)

The photofission cross section of [sup 232]Th was measured in the energy range 250--1200 MeV using a monochromatic tagged photon beam and a parallel-plate avalanche detector. The [sup 232]Th nuclear photofissility was obtained by measuring simultaneously and in the same energy range the photofission cross section of [sup 238]U and assuming a photofissility equal to one for [sup 238]U. It was found that, contrary to the case for heavier actinides, the [sup 232]Th photofissility value does not saturate up to 1200 MeV. Rather, it lies between 0.6 and 0.8, and shows a weak energy dependence: it increases by about 15% over an interval of 1 GeV. A comparison of these experimental findings with the predictions of an intranuclear-cascade Monte Carlo calculation is given.

• OSTI ID: 6392157
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 48:4; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663410* -- Photonuclear Reactions & Photon Scattering-- (1992-)
663470 -- Fission-- (1992-)
663590 -- Nuclear Mass Ranges-- A=220 & Above-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
CALCULATION METHODS
CROSS SECTIONS
ENERGY DEPENDENCE
ENERGY RANGE
EVEN-EVEN NUCLEI
FISSION
GEV RANGE
GEV RANGE 01-10
HEAVY NUCLEI
ISOTOPES
MEV RANGE
MEV RANGE 100-1000
MONTE CARLO METHOD
NUCLEAR REACTIONS
NUCLEI
PHOTOFISSION
PHOTONUCLEAR REACTIONS
RADIOISOTOPES
SPONTANEOUS FISSION RADIOISOTOPES
THORIUM 232
THORIUM ISOTOPES
URANIUM 238
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES