Photostimulated luminescence studies of γ-irradiated KBr1-xIx:TlI mixed crystals

被引：5

作者：

Nagarajan, S. ^{[1
]}

Eswaran, P. ^{[1
]}

机构：

[1] Pondicherry Engn Coll, Dept Phys, Puducherry 605014, India

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2009年 / 267卷 / 10期

关键词：

Photostimulated luminescence; gamma-Irradiated mixed crystals; Tl+ doped KBr-KI mixed crystals; PL luminescence; A(X)-A(T) emission band and complex centers; ALKALI-HALIDES; COLOR-CENTERS; KBR-IN; PHOSPHOR; TL;

D O I：

10.1016/j.nimb.2009.02.063

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Results on photoluminescence and photostimulated luminescence studies of KBr1-xIx:TlI (0.01 and 0.05 mol%) mixed crystals grown in vacuum and air are presented. Photoluminescence spectra of the mixed crystals excited in the A-absorption band of KBr:Tl+ exhibited the characteristic emission bands of Tl+ ions in KBr:Tl+. When excited in the low energy tail of A-band absorption, additional emission bands were observed. Compared with earlier reports, excitation bands observed around 4.8. 4.6 and 4.4 eV are attributed to complex thallium, centres of the form TlBr6-nIn (n = 0, 1, 2,3). Photostimulated luminescence of gamma-irradiated KBr1-xIx:TlI mixed crystals showed the presence of emission bands similar to the characteristic photoluminescence of Tl+ ions. The photostimulated luminescence slightly shifted towards the low energy side with increasing iodide composition x. The mechanism of emission in these mixed crystals is discussed. Dose response and storage stability (fading characteristics) in these mixed crystals are reported. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1800 / 1806

页数：7

共 50 条

[1] Optical absorption of Tl+ ions in KBr1-xIx:TlI mixed crystals
Eswaran, P.
Ravisankar, R.
Nagarajan, S.
NUCLEAR SCIENCE AND TECHNIQUES, 2009, 20 (04) : 208 - 218
[2] Optical absorption of Tl+ ions in KBr1-xIx:TlI mixed crystals
Eswaran P
Ravisankar R
Nagarajan S
NuclearScienceandTechniques, 2009, 20 (04) : 208 - 218
[3] Photostimulated luminescence of KBr-In crystals
Plavina, I
Popov, AI
Tale, A
RADIATION EFFECTS AND DEFECTS IN SOLIDS, 1995, 135 (1-4): : 623 - 626
[4] Photostimulated luminescence of KBr-In crystals
Plavina, I.
Popov, A.I.
Tale, A.
Radiation Effects and Defects in Solids, 1995, 135 (1 -4 pt 2): : 125 - 128
[5] SELF-TRAPPED EXCITON LUMINESCENCE IN KBR1-XIX AND RBBR1-XIX SOLID-SOLUTIONS
HAYASHI, T
YANASE, T
MATSUMOTO, T
KANNO, K
TOYODA, K
NAKAI, Y
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1992, 61 (03) : 1098 - 1112
[6] RAMAN-SCATTERING AND X-RAY-SCATTERING STUDIES ON KBR1-XIX, KCL1-XIX, AND K1-X RBXCL
NAIR, IR
WALKER, CT
PHYSICAL REVIEW B, 1973, 7 (06) : 2740 - 2754
[7] THERMO-LUMINESCENCE STUDIES IN KCL-KBR MIXED-CRYSTALS
SUBRAMANIAM, B
BANSIGIR, KG
JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1983, 16 (01): : 213 - 220
[8] Composition dependence of the four A bands for thin-solid films of KBr1-xIx:Tl+
Hashimoto, S
Mori, M
Ichimura, N
Kondo, H
Harada, Y
THIN SOLID FILMS, 2001, 386 (01) : 14 - 18
[9] THERMO-LUMINESCENCE IN PLASTICALLY DEFORMED AND IRRADIATED KBR SINGLE-CRYSTALS
MARIANI, DF
BRITO, F
OYARZUN, C
VIGNOLO, J
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1987, 48 (04) : 371 - 375
[10] ISOTHERMAL RELAXATION OF ELECTRIC-CONDUCTIVITY AND LUMINESCENCE OF IRRADIATED CRYSTALS NABR AND KBR
GALANOV, YI
IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII FIZIKA, 1986, 29 (06): : 85 - 89

← 1 2 3 4 5 →