Resolution of the nature of the coupling in subthreshold fission in STYU+n

Journal Article · Wed Jan 01 00:00:00 EST 1986 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.33.125· OSTI ID:6325285

Auchampaugh, G F; de Saussure, G; Olsen, D K; Ingle, R W; Perez, R B; Macklin, R L

The analysis of a recent high-resolution neutron capture measurement at 152 m has provided the first evidence that the strong fission resonance at 721 eV is a class-II resonance. This conclusion is based on the measured capture width of 4.7 +- 0.6 MeV, which is considerably smaller than the average capture width of 23.5 MeV for the neighboring resonances. Furthermore, after analyzing the fission widths for the 721- and 1211-eV clusters, we conclude for the J/sup / = 1/2 fission barrier in STZU that the inner barrier is lower than the outer barrier by approx.1.5 MeV.

• Research Organization: Los Alamos National Laboratory, Los Alamos, New Mexico 87545
• DOE Contract Number: W-7405-ENG-36; W-7405-ENG-26
• OSTI ID: 6325285
• Journal Information: Phys. Rev. C; (United States), Vol. 33:1
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
NEUTRON REACTIONS
FISSION
URANIUM 238 TARGET
CAPTURE
CROSS SECTIONS
GAMMA SPECTRA
MATRIX ELEMENTS
PARITY
SPIN
THRESHOLD ENERGY
TIME-OF-FLIGHT METHOD
URANIUM 239
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ANGULAR MOMENTUM
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
ENERGY
EVEN-ODD NUCLEI
HADRON REACTIONS
HEAVY NUCLEI
ISOTOPES
MINUTES LIVING RADIOISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
PARTICLE PROPERTIES
RADIOISOTOPES
SPECTRA
TARGETS
URANIUM ISOTOPES
652026* - Nuclear Properties & Reactions
A=220 & above
Experimental- Spontaneous & Induced Fission- (-1987)