Gamma Spectrum from Neutron Capture on Tungsten Isotopes

Conference · Thu Apr 29 04:00:00 EDT 2010

OSTI ID:1000960

Hurst, Aaron; Summers, Neil; Sleaford, Brad; Firestone, Richard B; Belgya, T; Revay, Z S

An evaluation of thermal neutron capture on the stable tungsten isotopes is presented, with preliminary results for the compound systems 183;184;185;187W. The evaluation procedure compares the g-ray cross-section data collected at the Budapest reactor, with Monte Carlo simulations of g-ray emission following the thermal neutron-capture process. The statistical-decay code DICEBOX was used for the Monte Carlo simulations. The evaluation yields new gamma rays in 185W and the confirmation of spins in 187W, raising the number of levels below which the level schemes are considered complete, thus increasing the number of levels that can be used in neutron data libraries.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: Nuclear Science Division
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1000960
• Report Number(s): LBNL-4087E
• Country of Publication: United States
• Language: English

Related Subjects

07 ISOTOPE AND RADIATION SOURCES
183
184
185
187W
-ray cross sections
neutron capture
EGAF
DICEBOX
level density
photon strength function
22 GENERAL STUDIES OF NUCLEAR REACTORS
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
42 ENGINEERING
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CAPTURE
ENERGY LEVELS
EVALUATION
NEUTRON REACTIONS
NEUTRONS
THERMAL NEUTRONS
TUNGSTEN ISOTOPES