Measurement of the neutron-induced fission cross sections of /sup 242/Cm and /sup 238/Pu

Journal Article · Fri Jul 01 00:00:00 EDT 1988 · Nucl. Sci. Eng.; (United States)

OSTI ID:6312372

Alam, B; Block, R C; Slovacek, R E; Hoff, R W

The neutron-induced fission cross sections of /sup 242/Cm and /sup 238/Pu have been measured from 0.1 eV to 100 keV using the Rensselaer Intense Neutron Spectrometer. Fission areas and widths were determined for several resolved low-energy resonances of /sup 242/Cm and /sup 238/Pu. The fission resonance integrals for /sup 242/Cm and /sup 238/Pu were found to be 12.9 +- 0.7 and 15.9 +- 0.6 b, respectively. The gross structure observed in the unresolved energy region of the /sup 242/Cm and /sup 238/Pu fission cross sections is suggestive of intermediate structure, and is consistent with the second well lying 2 to 3 MeV above the first well. The ENDF/B-V library fission cross section of /sup 238/Pu is, in general, not in good agreement with this measurement and a new evaluation is recommended. This is the first reported fission measurement of /sup 242/Cm in the 0.1-eV through 100-keV energy range.

• Research Organization: Univ. of Dhaka, Dept. of Physics, Dhaka-2 (BD); Rensselaer Polytechnic Institute, Dept. of Nuclear Engineering and Engineering Physics Gaertner LINAC Lab., Troy, NY (US); Knolls Atomic Power Lab., Niskayuna, NY (US); Lawrence Livermore National Lab., Livermore, CA (US)
• OSTI ID: 6312372
• Journal Information: Nucl. Sci. Eng.; (United States), Vol. 99:3
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
FISSION NEUTRONS
EVALUATION
PLUTONIUM 238
CROSS SECTIONS
KEV RANGE 10-100
NEUTRON SPECTROMETERS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
BARYONS
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-EVEN NUCLEI
FERMIONS
HADRONS
HEAVY NUCLEI
ISOTOPES
KEV RANGE
MEASURING INSTRUMENTS
NEUTRONS
NUCLEI
NUCLEONS
PLUTONIUM ISOTOPES
RADIOISOTOPES
SPECTROMETERS
YEARS LIVING RADIOISOTOPES
652020* - Nuclear Properties & Reactions
A=220 & above
Experimental