Funct. Mater. 2014; 21 (3): 282-299.

http://dx.doi.org/10.15407/fm21.03.282

Polystyrene-based plastic scintillator for n/γ -discrimination

P.N.Zhmurin, V.N.Lebedev, V.D.Titskaya, A.F.Adadurov, D.A.Elyseev, V.N.Pereymak

Institute for Scintillating Materials, STC "Institute for Single Crystals", National Academy of Sciences of Ukraine, 60 Lenin Ave., 61001 Kharkiv, Ukraine

Abstract: 

Polystyrene-based scintillator (PS) with 2-phenyl-5-(4-tert-butylephenyl)-1,3,4-oxadiazole or 2,5-di-(3-methylphenyl)-1,3,4 oxadiazole is proposed for pulse-shape n/γ -discrimination. This scintillator have improved mechanical properties, long operational time and high n/γ -discrimination parameter FOM (1.49 and 1.81 in a wide energy region), so obtained PS can be used as detectors of fast neutrons in the presence of gamma radiation background.

References: 

1. N.Zaitseva et al., Nucl. Instr. and Meth. Phys. Res., A668, 88 (2012). http://dx.doi.org/10.1016/j.nima.2011.11.071

2. J.B.Birks, The Theory and Practice of Scintillation Counting, Pergamon Press, London (1964).

3. C.L.Morris, Nucl. Instr. Meth. Phys. Res., 137, 397 (1976). http://dx.doi.org/10.1016/0029-554X(76)90353-0

4. J.H.Heltsley et al., Nucl. Instr. Meth. Phys. Res., A263, 441 (1988). http://dx.doi.org/10.1016/0168-9002(88)90984-9

5. S.Nutter et al., Nucl. Instr. Meth. Phys. Res., A310, 665 (1991). http://dx.doi.org/10.1016/0168-9002(91)91114-B

6. R.A.Winyard et al., Nucl. Instr. Meth. Phys. Res., 95, 141 (1971). http://dx.doi.org/10.1016/0029-554X(71)90054-1

7. Stopping Powers for Electrons and Positrons (ICRU report 37; Intern. Commis. on Radiat. Units and Measur.), Bethesda, Maryland, USA (1984).

8. V.G.Senchishin et al., Semiconductor Physics. Quantum Electronics & Optoelectronics, 3, 223 (2000).

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