Experimental assessment of the performance of a proposed lead slowing-down spectrometer at WNR/PSR (Weapons Neutron Research/Proton Storage Ring)

Conference · Mon Jan 01 00:00:00 EST 1990

OSTI ID:6515568

Moore, M S; Koehler, P E; Michaudon, A; Schelberg, A ^[1]; Danon, Y; Block, R C; Slovacek, R E ^[2]; Hoff, R W; Lougheed, R W ^[3]

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1. Los Alamos National Lab., NM (USA)
2. Rensselaer Polytechnic Inst., Troy, NY (USA)
3. Lawrence Livermore National Lab., CA (USA)

In November 1989, we carried out a measurement of the fission cross section of {sup 247}Cm, {sup 250}Cf, and {sup 254}Es on the Rensselaer Intense Neutron Source (RINS) at Rensselaer Polytechnic Institute (RPI). In July 1990, we carried out a second measurement, using the same fission chamber and electronics, in beam geometry at the Los Alamos Neutron Scattering Center (LANSCE) facility. Using the relative count rates observed in the two experiments, and the flux-enhancement factors determined by the RPI group for a lead slowing-down spectrometer compared to beam geometry, we can assess the performance of a spectrometer similar to RINS, driven by the Proton Storage Ring (PSR) at the Los Alamos National Laboratory. With such a spectrometer, we find that is is feasible to make measurements with samples of 1 ng for fission 1 {mu}g for capture, and of isotopes with half-lives of tens of minutes. It is important to note that, while a significant amount of information can be obtained from the low resolution RINS measurement, a definitive determination of average properties, including the level density, requires that the resonance structure be resolved. 12 refs., 5 figs., 3 tabs.

• Research Organization: Los Alamos National Lab., NM (USA)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6515568
• Report Number(s): LA-UR-90-3471; CONF-901057-10; ON: DE91002317; TRN: 91-001050
• Resource Relation: Conference: 7. international symposium on capture gamma-ray spectroscopy and related topics, Pacific Grove, CA (USA), 14-19 Oct 1990
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALIFORNIUM 250 TARGET
NEUTRON REACTIONS
CURIUM 247 TARGET
EINSTEINIUM 254 TARGET
NEUTRON SPECTROMETERS
PERFORMANCE
CROSS SECTIONS
ENERGY DEPENDENCE
EXPERIMENTAL DATA
FISSION
NEUTRON SOURCES
BARYON REACTIONS
DATA
HADRON REACTIONS
INFORMATION
MEASURING INSTRUMENTS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
PARTICLE SOURCES
RADIATION SOURCES
SPECTROMETERS
TARGETS
440103* - Radiation Instrumentation- Nuclear Spectroscopic Instrumentation
652020 - Nuclear Properties & Reactions
A=220 & above
Experimental