Retrospective neutron spectrum determination of a (30&nbsp;MeV D, Be) source using the multi-foil activation technique and STAYSL-PNNL [Characterization of neutron spectra from a (30 MeV d, Be) source using the multi-foil activation technique]

Goodell, John J.; Egnatuk, Christine M.; Padgett, Stephen W.; Bandong, Bryan B.; Roberts, Kevin E.; Mignerey, Alice C.

doi:10.1007/s10967-018-6064-1

Retrospective neutron spectrum determination of a (30 MeV D, Be) source using the multi-foil activation technique and STAYSL-PNNL [Characterization of neutron spectra from a (30 MeV d, Be) source using the multi-foil activation technique]

Journal Article · Tue Aug 07 00:00:00 EDT 2018 · Journal of Radioanalytical and Nuclear Chemistry

DOI:https://doi.org/10.1007/s10967-018-6064-1· OSTI ID:1476860

Goodell, John J. ^[1]; Egnatuk, Christine M. ^[2]; Padgett, Stephen W. ^[2]; Bandong, Bryan B. ^[2]; Roberts, Kevin E. ^[2]; Mignerey, Alice C. ^[1]

Univ. of Maryland, College Park, MD (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Retrospective characterization of a (30 MeV D, Be) neutron source was performed employing multi-foil activation and STAYSL-PNNL. Experimental reaction rates were calculated from gamma spectroscopy measurements of irradiated foils and MCNP provided the guess spectrum. Adjusted spectra were evaluated through activation calculations for a stainless-steel target using FISPACT-II. Adjusted spectra showed limited dependence on the dosimetry reactions and provided minor improvements in activation calculations. Omitting reflected neutrons in the guess spectrum generated poor activation results and the limited number of dosimetry reactions introduced doubt in the adjusted spectra. Furthermore, a dedicated neutron spectrometry experiment and a more detailed simulation is required.

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1476860

Alternate ID(s):: OSTI ID: 22748262

Report Number(s):: LLNL-JRNL--749383; 934355

Journal Information:: Journal of Radioanalytical and Nuclear Chemistry, Journal Name: Journal of Radioanalytical and Nuclear Chemistry Journal Issue: 1 Vol. 318; ISSN 0236-5731

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

References (8)

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Retrospective neutron spectrum determination of a (30 MeV D, Be) source using the multi-foil activation technique and STAYSL-PNNL [Characterization of neutron spectra from a (30 MeV d, Be) source using the multi-foil activation technique]

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