Peculiarities of the decay of cation excitons in alkali halide crystals

被引：6

作者：

Lushchik, A

Kirm, M

Lushchik, C

机构：

[1] Univ Tartu, Inst Phys, EE-51014 Tartu, Estonia

[2] Univ Hamburg, Inst Expt Phys 2, D-22761 Hamburg, Germany

来源：

RADIATION MEASUREMENTS | 2001年 / 33卷 / 05期

关键词：

cation excitons; luminescence; synchrotron radiation; alkali halides;

D O I：

10.1016/S1350-4487(01)00058-0

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The decay channels of cation excitons in alkali halide crystals are discussed. The excitation spectra of intrinsic and impurity emissions have been measured, using synchrotron radiation of 6-36 eV, for NaCl, NaBr and NaI crystals at 8 K and room temperature. Photons of 32 eV form three, four and five electron-hole pairs each in NaCl, NaBr and NaI, respectively. An anion exciton is created instead of one electron-hole pair at the decay of the 2p(5)3s Na+ cation exciton formed by a 33-34 eV photon in these crystals. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：557 / 560

页数：4

共 12 条

[1]

Aleksandrov Yu. M., 1987, Soviet Physics - Solid State, V29, P587

[2] Direct excitation of Tl+ impurity ions by hot photoelectrons in wide-gap crystals [J].

Feldbach, E ;

Kamada, M ;

Kirm, M ;

Lushchik, A ;

Lushchik, C ;

Martinson, I .

PHYSICAL REVIEW B, 1997, 56 (21) :13908-13915

[3] Excitonic and electron-hole processes in NaCl and NaCl:Ag crystals under conditions of multiplication of electronic excitations [J].

Feldbach, E ;

Kirm, M ;

Lushchik, A ;

Lushchik, C ;

Martinson, I .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2000, 12 (09) :1991-2005

[4]

ILMAS ER, 1965, IZV AN SSSR FIZ, V39, P27

[5]

IVANOV SN, 1973, FIZ TVERD TELA, V15, P1053

[6] ELECTRONIC STRUCTURE OF NABR [J].

KUNZ, AB ;

LIPARI, NO .

PHYSICAL REVIEW B, 1971, 4 (04) :1374-&

[7] Secondary excitons in alkali halide crystals [J].

Lushchik, A ;

Feldbach, E ;

Kink, R ;

Lushchik, C ;

Kirm, M ;

Martinson, I .

PHYSICAL REVIEW B, 1996, 53 (09) :5379-5387

[8] Excitonic and electron-hole mechanisms of the creation of Frenkel defect in alkali halides [J].

Lushchik, A ;

Kirm, M ;

Lushchik, C ;

Vasil'chenko, E .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2000, 166 :529-537

[9]

Lushchik Ch., 1975, T I FIZ AKAD NAUK ES, V44, P3

[10]

Maiste A. A., 1974, Soviet Physics - Solid State, V16, P1118

← 1 2 →