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Cold Neutron Radiation Does Effects on a 6LiF:ZnS(Ag) Neutron Detector with Wavelenght Shifting Fibers and SiPM Photodectector

Published

Author(s)

Kevin NMN Pritchard, Daniel S. Hussey, A. Osovizky, Jeffrey B Ziegler, Louis Edward Binkley, Peter Tsai, Nancy Hadad, M. Jackson, C. Hurlbut, George M Baltic, Charles Majkrzak, Nicholas C. Maliszewskyj

Abstract

A 6LiF:ZnS(Ag) based cold neutron detector with wavelength shifting (WLS) fibers and SiPM photodetector was developed at the NIST Center for Neutron Research for the CANDoR instrument (Chromatic Analysis Neutron Diffractometer or Reflectometer). To predict the service lifetime of this prototype detector, a series of detectors were irradiated with a progression of cold neutron doses ranging between 1E+11 n/cm2 to 6E+12 n/cm2. It was found that the neutron absorbing 6Li isotope was not measurably depleted, but that the photonic yield of the detector deteriorated with increasing neutron dose. Even so, the detectors are expected to withstand a cumulative cold neutron dose of at least 10E+12 n/cm2 before degrading to an unfit state. The component parts of the detector could not be separated, so the degradation of the bulk scintillator and WLS fibers could not be gauged separately.
Citation
Nuclear Instruments & Methods in Physics Research A
Pub Type
Journals

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Alternative energy

Citation

, K. , , D. , Osovizky, A. , , J. , , L. , Tsai, P. , Hadad, N. , Jackson, M. , Hurlbut, C. , , G. , Majkrzak, C. and Maliszewskyj, N. (2021), Cold Neutron Radiation Does Effects on a <sup>6</sup>LiF:ZnS(Ag) Neutron Detector with Wavelenght Shifting Fibers and SiPM Photodectector, Nuclear Instruments & Methods in Physics Research A, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=931017 (Accessed December 8, 2024)

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Created April 21, 2021