期刊
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
卷 65, 期 2, 页码 739-743出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TNS.2017.2785683
关键词
Neutron radiation; plastic scintillator; polyethylene 2.6-naphthalate (PEN); pulse-shape discrimination (PSD)
Polyethylene 2.6-naphthalate (PEN) is a promising plastic scintillator material. In this paper, a thin PEN film was used for detection, identification, and energy spectrum measurements of various ionizing radiation particles. A thin PEN film was used to separate alpha (5.49 MeV) and beta (up to 2.2 MeV) particles coming from Pu-238 and Sr-90 + Y-90 sources, respectively, as well as for the neutron (up to 14 MeV) and gamma separation from the isotopic PuBe neutron source. Acquired photomultiplier pulses were analyzed by the long tail method based on the delayed fluorescence intensity dependence on the mass and charge of particles absorbed. For determination of the separation quality, the figure of merit (FOM), based on the ratio of short and long tails, was used. It was found that depending on the FOM values of neutron/gamma and alpha/beta separation, the thin PEN film is suitable for the ionizing radiation particle separation.
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