Development of large-area composite stilbene scintillator for fast neutron detection
- Authors
- Lee, Seung Kyu; Son, Jae Bum; Jo, Kwang Ho; Kang, Byuong Hwi; Kim, Gi Dong; Seo, Hee; Park, Se Hwan; Galunov, Nikolai Z.; Kim, Yong Kyun
- Issue Date
- Jan-2014
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- fast neutron detector; composite scintillators; stilbene; n- separation
- Citation
- JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, v.51, no.1, pp.37 - 47
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
- Volume
- 51
- Number
- 1
- Start Page
- 37
- End Page
- 47
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/160945
- DOI
- 10.1080/00223131.2014.845539
- ISSN
- 0022-3131
- Abstract
- Fast neutron applications have gained popularity with the growth of fast neutron production facilities. Covering a larger area and/or wider angle can be one of the advantages of a fast neutron detector. In the present study, a large-area composite stilbene scintillator with the dimensions of 200mm (D) x 20mm (H) was fabricated to examine its scintillation properties and to evaluate its applicability to fast neutron detection. The detector response of small- and large-area composite stilbene scintillators for neutrons and gamma rays was measured and compared with that of commercial and small single-crystal stilbene scintillators. To this end, the response of each scintillator was measured for radioisotopes as well as mono-energetic neutrons generated by a Tandem accelerator. The neutron-gamma separation performance of the large-area composite stilbene scintillator was evaluated in terms of figure-of-merit (FoM) using the digital pulse shape discrimination method. The composite stilbene scintillator showed good energy linearity, as determined from its recoil proton spectra, with reasonable n- separation capability. The results indicated that the composite stilbene scintillator could be applied to the field of fast neutron detection, especially when a large area and/or a wide angle is to be covered and could be a good alternative to liquid scintillators.
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