Neutron Spectrometry with Scintillating Bolometers of LiF and Sapphire

Coron, N. ; Cuesta, C. ; Garcia, E. (Universidad de Zaragoza) ; Ginestra, C. ; Gironnet, J. ; De Marcillac, P. ; Martinez, M. ; Ortigoza, Y. ; Ortiz de Solorzano, A./Puimedon, J. (Universidad de Zaragoza) ; Redon, T. (Universidad de Zaragoza) ; Rolon, T. ; Sarsa, M.L. ; Torres, L. (Universidad de Zaragoza) ; Villar, J.A. (Universidad de Zaragoza)

Resumen: Two scintillating bolometers of LiF (33 g) and Al2O3 (50 g) at 20 mK, inside a lead shielding at the Canfranc Underground Laboratory, were irradiated with neutrons from a source of 252Cf. The analysis of nuclear recoils registered by sapphire and (n, a) captures by 6Li shows the feasibility of these cryogenic devices to measure the spectral flux of a neutron field. Data unfolding was done assuming that the spectral flux is a piecewise constant function defined on six energy groups. It can be solved by using non-negative least squares without additional assumptions on the neutron flux. The model provides consistent results with the spectra of the observed events in bolometers, giving a fast neutron flux of F(E > 0.1 MeV) = 0.20 n s-1cm-2 with a 15% uncertainty after 3 hours of live time. After our analysis, it can be concluded that nuclear recoils in sapphire are more useful than (n, a) captures in LiF for spectrometry of fast neutrons.

Idioma: Inglés

DOI: 10.1109/TNS.2016.2561280

Año: 2016

Publicado en: IEEE TRANSACTIONS ON NUCLEAR SCIENCE 63, 3 (2016), 1967-1975
ISSN: 0018-9499

Factor impacto JCR: 1.171 (2016)

Categ. JCR: NUCLEAR SCIENCE & TECHNOLOGY rank: 14 / 33 = 0.424 (2016) - Q2 - T2
Categ. JCR: ENGINEERING, ELECTRICAL & ELECTRONIC rank: 173 / 260 = 0.665 (2016) - Q3 - T3

Factor impacto SCIMAGO: 0.565 - Electrical and Electronic Engineering (Q2) - Nuclear Energy and Engineering (Q2) - Nuclear and High Energy Physics (Q2)

Financiación: info:eu-repo/grantAgreement/ES/MICINN/FPI-CSD2009-00064
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2008-03228
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2011-23749

Tipo y forma: Artículo (PrePrint)

Área (Departamento): Área Técnica. Lab. y Talleres (Dpto. Física Teórica)
Área (Departamento): Área Física Atóm.Molec.y Nucl. (Dpto. Física Teórica)