First Measurement of the Total Neutron Cross Section on Argon between 100 and 800 MeV.
Journal
Physical review letters
ISSN: 1079-7114
Titre abrégé: Phys Rev Lett
Pays: United States
ID NLM: 0401141
Informations de publication
Date de publication:
26 Jul 2019
26 Jul 2019
Historique:
revised:
23
05
2019
received:
13
03
2019
entrez:
7
9
2019
pubmed:
7
9
2019
medline:
7
9
2019
Statut:
ppublish
Résumé
We report the first measurement of the neutron cross section on argon in the energy range of 100-800 MeV. The measurement was obtained with a 4.3-h exposure of the Mini-CAPTAIN detector to the WNR/LANSCE beam at LANL. The total cross section is measured from the attenuation coefficient of the neutron flux as it traverses the liquid argon volume. A set of 2631 candidate interactions is divided in bins of the neutron kinetic energy calculated from time-of-flight measurements. These interactions are reconstructed with custom-made algorithms specifically designed for the data in a time projection chamber the size of the Mini-CAPTAIN detector. The energy averaged cross section is 0.91±0.10(stat)±0.09(syst) b. A comparison of the measured cross section is made to the GEANT4 and FLUKA event generator packages, where the energy averaged cross sections in this range are 0.60 and 0.68 b, respectively.
Identifiants
pubmed: 31491269
doi: 10.1103/PhysRevLett.123.042502
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM