$sup 238$U and $sup 232$Th photofission and photoneutron emission near threshold

Journal Article · Mon Aug 25 00:00:00 EDT 1975 · Phys. Rev. Lett., v. 35, no. 8, pp. 501-504

OSTI ID:4157882

Dickey, P A; Axel, P

Variable-energy photons defined to 100 keV were used to study $sup 238$U and $sup 232$Th from 5 to 8 MeV. The inferred fission transmission indicates (a) that the lowest 1$sup -$ fission barrier is about 6.5 MeV in $sup 238$U and 6.3 MeV in $sup 232$Th, and (b) that there is an energy gap before the rapid opening of additional fission channels above 7 MeV in $sup 238$U.

• Research Organization: Department of Physics, University of Illinois at Urbana- Champaign, Illinois 61801
• NSA Number: NSA-33-002179
• OSTI ID: 4157882
• Journal Information: Phys. Rev. Lett., v. 35, no. 8, pp. 501-504, Journal Name: Phys. Rev. Lett., v. 35, no. 8, pp. 501-504; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

643406*
CROSS SECTIONS
ENERGY GAP-- URANIUM 238
FISSION BARRIER
MEV RANGE 01-10
N69161* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
A >= 220--Nuclear Reactions & Scattering--Spontaneous & Induced Fission:734
PHOTONEUTRONS THORIUM 232