A new method for charged particles identification with a CsI(Tl) crystal

Citation
Va. Khryachkov et al., A new method for charged particles identification with a CsI(Tl) crystal, INSTR EXP R, 43(3), 2000, pp. 310-317
Citations number
10
Categorie Soggetti
Instrumentation & Measurement
Journal title
INSTRUMENTS AND EXPERIMENTAL TECHNIQUES
ISSN journal
00204412 → ACNP
Volume
43
Issue
3
Year of publication
2000
Pages
310 - 317
Database
ISI
SICI code
0020-4412(200005/06)43:3<310:ANMFCP>2.0.ZU;2-C
Abstract
A spectrometer for detecting and identifying light charged particles with l ow energies (>similar to 1 MeV) is described. The spectrometer consists of a thin CsI(Tl) crystal, an Phi Y-176 photomultiplier, and a waveform digiti zer. Digital oscillograms of anode pulses are stored and analyzed in off-li ne processing. In order to reconstruct the energy and specific energy losse s, the two-component character of the scintillation fluorescence decay in a CsI(Tl) crystal and the dependence of the fast component on the specific l oss value are used. A digital particle identification method is proposed. T he results of experimental studies of the CsI(TI) crystal scintillation pro perties and efficiency in identifying electrons, protons, and a-particles i n an energy range of similar to 1-10 MeV are presented. It is shown that th e efficiency of the digital method for proton and a-particle identification is 1.5-2 times higher than that of the known analog methods.