Neutron capture and total cross sections of [sup 144]Sm
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
Neutron capture and transmission measurements have been made from 0.5 eV to 500 keV and have been analyzed to give parameters of resonances up to [similar to]100 keV. The average resonance spacing for [ital s]-wave resonances was determined to be 670[plus minus]60 eV and the [ital s]-wave strength function (3.6[plus minus]0.8)[times]10[sup [minus]4]. The average radiation width for [ital s]-wave resonances was 74[plus minus]5 meV and that for [ital p]-wave resonances somewhat larger [similar to]89 meV. The Maxwellian average capture cross section at a stellar temperature of 30 keV was 92[plus minus]6 mb. The capture resonance integral of 1.7[plus minus]0.1 b calculated from the resonance parameters and the thermal cross section is smaller than the recently measured value of 2.38[plus minus]0.17 b.
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6139732
- Journal Information:
- Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 48:3; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
663560 -- Nuclear Mass Ranges-- A=90-149-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABSORPTION
BARYON REACTIONS
CAPTURE
CROSS SECTIONS
ENERGY RANGE
EV RANGE
HADRON REACTIONS
KEV RANGE
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
RESONANCE ABSORPTION
SAMARIUM 144 TARGET
SORPTION
TARGETS
TOTAL CROSS SECTIONS