Afterglow of heavily irradiated sapphire

被引:3
作者
Flerov, A
Flerov, V [1 ]
机构
[1] Nucl Res Ctr, LV-2169 Salaspils 1, Latvia
[2] Inst Phys, LV-2169 Salaspils, Latvia
关键词
sapphire; optical absorption; thermoluminescence;
D O I
10.1016/S0168-583X(98)00132-3
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
A previous paper reported an "anomalous" fading of optical absorption in corundum previously irradiated by reactor neutrons after its exposure to X-rays. It was found that the optical density (OD) followed a linear decay on an OD vs. Log (time) plot. We have since obtained such a dependence for the afterglow intensity with time for heavily irradiated sapphire. It is assumed that in both cases electrons annihilation occurs on hole centers. As a hole partner there may be the hole center described by us previously, which included an interstitial oxygen, The electron partner is a deep electron trap similar to that occurring under irradiation of reduced crystal. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:378 / 380
页数:3
相关论文
共 11 条
[1]   LUMINESCENCE FROM ELECTRON-IRRADIATED SAPPHIRE [J].
CAULFIELD, KJ ;
COOPER, R ;
BOAS, JF .
PHYSICAL REVIEW B, 1993, 47 (01) :55-61
[2]   OPTICAL VIBRONIC ABSORPTION-SPECTRA IN 14.8 MEV NEUTRON DAMAGED SAPPHIRE [J].
EVANS, BD ;
STAPELBROEK, M .
SOLID STATE COMMUNICATIONS, 1980, 33 (07) :765-770
[3]   Thermoluminescence of deep electron and hole traps in irradiated sapphire [J].
Flerov, V ;
Flerov, A .
PROCEEDINGS OF THE 13TH INTERNATIONAL CONFERENCE ON DEFECTS IN INSULATING MATERIALS - ICDIM 96, 1997, 239- :757-760
[4]  
FLEROV V, 1995, P 11 INT C SOL STAT, P30
[5]   Thermoluminescence of reactor-irradiated aluminium oxide [J].
Flerov, VI ;
Skvortsova, V ;
Flerov, AV .
RADIATION PROTECTION DOSIMETRY, 1996, 65 (1-4) :227-229
[6]  
FLEROV VI, 1992, P 12 INT C DEF INS M, V2, P847
[7]  
KULIS PA, 1985, ELECT PROCESSES DEFE, P85
[8]   OPTICAL AND ESR STUDIES OF HOLE-CENTERS IN GAMMA-IRRADIATED AL2O3 [J].
LEE, KH ;
HOLMBERG, GE ;
CRAWFORD, JH .
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1977, 39 (02) :669-674
[9]   RADIATION-DAMAGE IN THE CATION SUBLATTICE OF ALPHA-AL2O3 [J].
PELLS, GP ;
STATHOPOULOS, AY .
RADIATION EFFECTS AND DEFECTS IN SOLIDS, 1983, 74 (1-4) :181-191
[10]   V-CENTERS IN SINGLE-CRYSTAL AL2O3 [J].
TURNER, TJ ;
CRAWFORD, JH .
SOLID STATE COMMUNICATIONS, 1975, 17 (02) :167-169