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

Autor: Khryachkov, V. A., Dunaev, M. V., Ketlerov, V. V., Semenova, N. N., Tarasko, M. Z.
Zdroj: Instruments and Experimental Techniques; May 2000, Vol. 43 Issue: 3 p310-317, 8p
Abstrakt: A spectrometer for detecting and identifying light charged particles with low energies (>∼1 MeV) is described. The spectrometer consists of a thin CsI(Tl) crystal, an ФЭУ-176 photomultiplier, and a waveform digitizer. Digital oscillograms of anode pulses are stored and analyzed in off-line processing. In order to reconstruct the energy and specific energy losses, the two-component character of the scintillation fluorescence decay in a CsI(Tl) crystal and the dependence of the fast component on the specific loss value are used. A digital particle identification method is proposed. The results of experimental studies of the CsI(Tl) crystal scintillation properties and efficiency in identifying electrons, protons, and α-particles in an energy range of ∼1–10 MeV are presented. It is shown that the efficiency of the digital method for proton and α-particle identification is 1.5–2 times higher than that of the known analog methods.
Databáze: Supplemental Index