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- Title
NEODYMIUM NEUTRON CROSS SECTION MEASUREMENTS.
- Authors
Barry, D. P.; Trbovich, M. J.; Danon, Y.; Block, R. C.; Slovacek, R. E.; Leinweber, G.; Burke, J. A.; Drindak, N. J.
- Abstract
Neutron capture and transmission measurements were performed by the time-of-flight technique at the Rensselaer Polytechnic Institute LINAC using metallic neodymium samples. The capture measurements were made at the 25-m-long flight station with a 16-segment NaI(Tl) multiplicity detector, and the transmission measurements were performed at 15 and 25 m flight stations with a 6Li glass scintillation detector. After the data were collected and reduced, resonance parameters were determined by simultaneously fitting the transmission and capture data with the multilevel R-matrix Bayesian code SAMMY. The resonance parameters for all naturally occurring neodymium isotopes lie within the energy range of 1.0- 500 eV. The resulting resonance parameters were used to calculate the capture resonance integral with this energy region and were compared to calculations obtained when using the resonance parameters from ENDF-B/VI. The RPI parameters gave a resonance integral value of 32 ±0.5 b that is ∼7% lower than that obtained with the ENDF-B/VI parameters. The current measurements significantly reduce the statistical uncertainties on the resonance parameters when compared with previously published parameters.
- Subjects
NEUTRON capture; NEODYMIUM; PARTICLES (Nuclear physics); NUCLEAR reactors; SCINTILLATION counters; NUCLEAR counters
- Publication
Radiation Protection Dosimetry, 2005, Vol 115, Issue 1-4, p139
- ISSN
0144-8420
- Publication type
Article
- DOI
10.1093/rpd/nci046