Study on KC1 Colorated Center Doped with Na<SUP>+</SUP> Crystal by Positron Annihilation

HUANG Mao-Rong; GU Hua; WANG Yun-Yu; HE Yong-Shu; YANG Ju-Hua; LIN Jian-Ming; XU Cheng-Huang

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

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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.

References

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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.

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

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.