Composite delayed neutron energy spectra of fissionable isotopes: Progress report, September 1, 1986-August 31, 1987

Technical Report · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5888260

Couchell, G P; Schier, W A

During this present contract period we have so far: (1) completed our studies of the time-dependent DN spectra following thermal fission of Pu-239; (2) measured the upper energy region of the DN spectra in four delay-time intervals following fast fission of U-238; and (3) measured the equilibrium DN spectra for U-235, U-238 and Pu-239 in the same upper energy region. In addition, we have developed an analytical technique for extracting Keepin six-group energy spectra from measured time-dependent spectra which largely overcomes the deficiencies of earlier methods of analysis. Four papers on our DN investigations have also been prepared for publication, two of which are already in print. By the end of this period we shall complete our measurements of the higher energy portion of the DN spectra for the remaining three U-238 time intervals and also for the equilibrium spectrum from fast fission of U-235.

• Research Organization: Lowell Univ., MA (USA). Dept. of Physics and Applied Physics
• DOE Contract Number: FG02-86ER40305
• OSTI ID: 5888260
• Report Number(s): DOE/ER/40305-1; ON: DE88000637
• Country of Publication: United States
• Language: English

Related Subjects

652020* -- Nuclear Properties & Reactions
A=220 & above
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BARYONS
DELAYED NEUTRONS
ELEMENTARY PARTICLES
FERMIONS
FISSION
FISSION NEUTRONS
HADRON REACTIONS
HADRONS
NEUTRON REACTIONS
NEUTRON SPECTRA
NEUTRONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEONS
PLUTONIUM 239 TARGET
SPECTRA
TARGETS
URANIUM 235 TARGET
URANIUM 238 TARGET