Investigating the anisotropic scintillation response in anthracene through neutron, gamma-ray, and muon measurements

Schuster, Patricia; Brubaker, Erik

doi:10.1109/tns.2016.2542589

Title: Investigating the anisotropic scintillation response in anthracene through neutron, gamma-ray, and muon measurements

Journal Article · Thu May 05 00:00:00 EDT 2016 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/tns.2016.2542589· OSTI ID:1257805

Schuster, Patricia ^[1]; Brubaker, Erik ^[2]

Univ. of California, Berkeley, CA (United States)
Sandia National Lab. (SNL-CA), Livermore, CA (United States)

Our paper reports a series of measurements that characterize the directional dependence of the scintillation response of crystalline anthracene to incident DT neutrons, DD neutrons, ¹³⁷Cs gamma rays, and, for the first time, cosmic ray muons. Moreover, the neutron measurements give the amplitude and pulse shape dependence on the proton recoil direction over one hemisphere of the crystal, confirming and extending previous results in the literature. In similar measurements using incident gamma rays, no directional effect is evident, and any anisotropy with respect to the electron recoil direction is constrained to have a magnitude of less than a tenth of that present in the proton recoil events. Cosmic muons are measured at two directions, and no anisotropy is observed. Our set of observations indicates that high dE/dx is necessary for an anisotropy to be present for a given type of scintillation event, which in turn could be used to discriminate among different hypotheses for the underlying causes of the anisotropy, which are not well understood.

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Research Organization:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1257805

Report Number(s):: SAND-2016-2176J; 620054; TRN: US1601758

Journal Information:: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science; ISSN 0018-9499

Publisher:: Institute of Electrical and Electronics Engineers (IEEE)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 23 works

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References (10)

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Radioactive contamination of scintillators Danevich, F. A.; Tretyak, V. I. arXiv https://doi.org/10.48550/arxiv.1804.00653	text	January 2018
ZnWO ₄ anisotropic scintillator for Dark Matter investigation with the directionality technique Bernabei, R.; Belli, P.; Cappella, F. EPJ Web of Conferences, Vol. 136 https://doi.org/10.1051/epjconf/201713605002	journal	January 2017
Radioactive contamination of scintillators Danevich, F. A.; Tretyak, V. I. International Journal of Modern Physics A, Vol. 33, Issue 09 https://doi.org/10.1142/s0217751x18430078	journal	March 2018

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