Branching transport model of NaI(Tl) alkali-halide scintillator

被引：11

作者：

Alexandrov, B. S. ^{[1
,2
]}

Ianakiev, K. D. ^{[1
]}

Littlewood, P. B. ^{[3
]}

机构：

[1] Los Alamos Natl Lab, Nucl Nonproliferat Div, Los Alamos, NM 87545 USA

[2] Univ New Mexico, Albuquerque, NM 87131 USA

[3] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2008年 / 586卷 / 03期

关键词：

NaI(Tl); detectors; temperature dependence; self-trapped excitons; transport; time dependence of the current pulses; nonlinear rate equations;

D O I：

10.1016/j.nima.2007.12.010

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We measure the time dependence of the scintillator light-emission pulses in NaI(Tl) crystals at different temperatures, after activation by gamma rays. We confirm that there are two main nonexponential components to the time decay and find that their amplitude ratio shows Arrhenius temperature dependence. We explain these nonexponential components as arising from two competing mechanisms of carrier transport to the Tl activation levels. The total light output of the NaI(Tl) detectors shows a linear temperature dependence explained by our model. Published by Elsevier B.V.

引用

页码：432 / 438

页数：7

共 27 条

[1]

ALEXANDROV B, 2005, P INMM 46 ANN M PHOE

[2]

BIKS J, 1964, THEORY PRACTICE SCIN

[3]

BOLLINGER LM, 1961, REV SCI INSTR, V32

[4] The quest for the ideal inorganic scintillator [J].

Derenzo, SE ;

Weber, MJ ;

Bourret-Courchesne, WE ;

Klintenberg, MK .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 505 (1-2) :111-117

[5] KINETICS OF SELF-TRAPPED HOLES IN ALKALI-HALIDE CRYSTALS - EXPERIMENTS IN NAI(TI) AND KI(TI) [J].

DIETRICH, HB ;

PURDY, AE ;

MURRAY, RB ;

WILLIAMS, RT .

PHYSICAL REVIEW B, 1973, 8 (12) :5894-5901

[6] INTERACTION OF EXCITONS WITH LATTICE VIBRATIONS [J].

GOODMAN, B ;

OEN, OS .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1959, 8 :291-294

[7] Luminescence in solids. [J].

Gurney, RW ;

Mott, NF .

TRANSACTIONS OF THE FARADAY SOCIETY, 1939, 35 (01) :0069-0073

[8] SCINTILLATION PROCESS IN CSI(TIK .1. COMPARISON WITH ACTIVATOR SATURATION MODEL [J].

GWIN, R ;

MURRAY, RB .

PHYSICAL REVIEW, 1963, 131 (02) :501-+

[9] SCINTILLATION PROCESS IN CSI(T1) .2. EMISSION SPECTRA AND POSSIBLE ROLE OF SELF-TRAPPED HOLES [J].

GWIN, R ;

MURRAY, RB .

PHYSICAL REVIEW, 1963, 131 (02) :508-+

[10]

IANAKIEV K, 2005, IEEE NSS MIC C PUERT

← 1 2 3 →