A light induced configurational change of F-A centres in Li doped KCl-KBr crystals

被引：0
|
作者：
Ketolainen, P [1 ]
Silfsten, P [1 ]
机构：
[1] LAPEENRANTA UNIV TECHNOL,DEPT INFORMAT TECHNOL,SF-53851 LAPPEENRANTA,FINLAND
来源：
RADIATION EFFECTS AND DEFECTS IN SOLIDS | 1995年 / 134卷 / 1-4期
关键词：
alkali halides; mixed crystals; colour centres; F-A centres;
D O I：
10.1080/10420159508227257
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：
Spectroscopic properties of F-A centres in Li doped KCl-KBr mixed crystals were studied. At low temperature light induced spectral shifts, for the F-A1 band towards lower energy and for the F-A2 band towards higher energy, were observed. The shifts are proposed to be due to a configurational change where the electron occupied vacancy finds a new location in relation to the neighbouring chlorine and bromine ions. The recovery to the original configuration, obtained in the F --> F-A conversion, is a temperature activated process.
引用
收藏
页码：401 / 404
页数：4
相关论文
共 24 条
  • [1] Light induced configurational change of FA centres in Li doped KCl-KBr crystals
    Ketolainen, P.
    Silfsten, P.
    Radiation Effects and Defects in Solids, 1995, 134 (1 -4 pt 1): : 401 - 404
  • [2] FORMATION OF F-CENTRES IN KCL-KBR SOLID SOLUTIONS
    ZAVADOVSKAYA, EK
    ANNENKOV, YM
    FRANGULY.TS
    IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII FIZIKA, 1969, (11): : 44 - +
  • [3] Optical studies of divalent europium doped mixed KCl-KBr crystals
    Aguilar, A
    Benitez, F
    Verdiguel, H
    Aguilar, G
    Camarillo, E
    Hernandez, J
    Cabrera, E
    Murrieta, H
    RADIATION EFFECTS AND DEFECTS IN SOLIDS, 1998, 145 (03): : 233 - 244
  • [4] HALF-WIDTH OF THE F-BAND AND THE DENSITY OF THE F-CENTRES IN SOLID SOLUTIONS OF KCL-KBR SINGLE CRYSTALS
    MELIKGAIKAZYAN, IY
    TRESKINA, MN
    ZAVADOVSKAYA, EK
    OPTIKA I SPEKTROSKOPIYA, 1960, 9 (06): : 782 - 784
  • [5] ON DECREASED EFFECTIVITY OF GENERATION OF F-CENTERS IN MIXED KCL-KBR CRYSTALS
    ANNENKOV, YM
    GRISHUKO.VA
    FRANGULY.TS
    IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII FIZIKA, 1967, (12): : 126 - &
  • [6] Gamma coloration of mixed crystals of KCl-KBr doped with Pb2+
    Cruz, E
    Negrón, A
    Ramos, A
    Ramos, S
    Hernández, J
    Jaque, F
    Murrieta, H
    RADIATION PHYSICS AND CHEMISTRY, 2001, 61 (3-6) : 443 - 444
  • [7] DIELECTRIC LOSS OF KCL-KBR MIXED-CRYSTALS DOPED WITH SR2+
    OHGAKU, T
    TAKEUCHI, N
    PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1977, 42 (01): : K83 - K85
  • [8] TEMPERATURE-DEPENDENCE OF HYPERFINE INTERACTION OF LI7 NUCLEI OF F-A(LI)-CENTERS IN KCL AND KBR
    FEDOTOV, YV
    GRACHEV, VG
    BEZOBCHUK, VK
    FIZIKA TVERDOGO TELA, 1976, 18 (01): : 264 - 265
  • [9] Defects generated by irradiation with gamma rays in lead doped KCl-KBr mixed single crystals
    Cruz-Zaragoza, E
    Ramos, BS
    Barboza-Flores, M
    Chernov, V
    Meléndrez, R
    Hernández, AJ
    Murrieta, SH
    RADIATION MEASUREMENTS, 2004, 38 (4-6) : 695 - 698
  • [10] FLOW-STRESS, VICKERS HARDNESS, AND WING SIZE FOR PURE AND DOPED KCL AND FOR KCL-KBR MIXED-CRYSTALS
    HOPKINS, JR
    MILLER, JA
    MARTIN, JJ
    PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1973, 19 (02): : 591 - 595
123