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Chinese Physics C> 1991, Vol. 15> Issue(2) : 97-102 

Study on KC1 Colorated Center Doped with Na+ Crystal by Positron Annihilation

  •  Institute of High Energy Physics,Academia Sinica,Beijing 1000391 Institute of Physical-Chemical Material,Huachiao University,Quanzhou 362000

  • The relation of the live times and S parameters with doped quantities of Na+ have been studied by positron annihilation method in pure,colourable and irradiant KC1 single crystals,The results show that the concentration of vacancies of KC1 doped with 800ppm Na+ is 4.24×1017/cm3.It is close to that of the pure KC1 crystal.The obvious F centers exist in the colorated crystal.The S parameters are mainly influenced by the external electrons of halide ions.Mechanism of annihilation of KC1 crystal doped with Na+ has been discussed.
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    [1] S. Dannefaex et aL, Phys. Rev., B13(1976), 37I5.[2] V. I. Goldanskii, Phys. Letters, Vol. 32A No. 1(1970), 10.[3] 许承晃等，华侨大学学报，No. 1(1985), 36.[4] A. Dupasquier αPositron in Ionic Solids" in αPositron in Solids" Eds P. Hautsjarvi Springs-verlag (1979), 215.[5] S. R. Dhanalakshmi er al.,“ Positron Annihilation" Eds. P. C. Jain et al., (World Scientific,1985),773.[6] R. N. West, Advances‘。Physics, Vol. 22, No. 3(1973), 348.[7] S. Dannefaer et al., J. Phys. C: Solid State Phys. Vol., 7(1974), 1261.[8] C. D. Hodgman (Ed.)“ Handbook of Chemistry and Physics", 37th Ed. Chem. Rubher Publ.Co., Ohio, (1956), 1738 and 1742.

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HUANG Mao-Rong, GU Hua, WANG Yun-Yu, HE Yong-Shu, YANG Ju-Hua, LIN Jian-Ming and XU Cheng-Huang. Study on KC1 Colorated Center Doped with Na+ Crystal by Positron Annihilation[J]. Chinese Physics C, 1991, 15(2): 97-102.
HUANG Mao-Rong, GU Hua, WANG Yun-Yu, HE Yong-Shu, YANG Ju-Hua, LIN Jian-Ming and XU Cheng-Huang. Study on KC1 Colorated Center Doped with Na+ Crystal by Positron Annihilation[J]. Chinese Physics C, 1991, 15(2): 97-102. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Study on KC1 Colorated Center Doped with Na+ Crystal by Positron Annihilation

    Corresponding author: HUANG Mao-Rong,
  • Institute of High Energy Physics,Academia Sinica,Beijing 1000391 Institute of Physical-Chemical Material,Huachiao University,Quanzhou 362000
  • Received Date: 1900-01-01
  • Accepted Date: 1900-01-01
  • Available Online: 1991-02-05

Abstract: The relation of the live times and S parameters with doped quantities of Na+ have been studied by positron annihilation method in pure,colourable and irradiant KC1 single crystals,The results show that the concentration of vacancies of KC1 doped with 800ppm Na+ is 4.24×1017/cm3.It is close to that of the pure KC1 crystal.The obvious F centers exist in the colorated crystal.The S parameters are mainly influenced by the external electrons of halide ions.Mechanism of annihilation of KC1 crystal doped with Na+ has been discussed.

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