Positron annihilation sites in nano lead sulfide powders

被引：5
|
作者：
Rempel, A. A. [1 ,2 ]
Valeeva, A. A. [1 ,2 ]
Sato, K. [3 ]
Kozhevnikova, N. S. [1 ]
机构：
[1] Russian Acad Sci, Inst Solid State Chem, Ural Branch, Pervomaiskaya 91, Ekaterinburg 620990, Russia
[2] Ura Fed Univ First President Russia BN Yeltsin, Ekaterinburg 620002, Russia
[3] Tokyo Gakugei Univ, Dept Environm Sci, Koganei, Tokyo 1848501, Japan
来源：
16TH INTERNATIONAL CONFERENCE ON POSITRON ANNIHILATION (ICPA-16) | 2013年 / 443卷
基金：
俄罗斯基础研究基金会;
关键词：
PBS; VACANCIES; IDENTIFICATION; FILMS;
D O I：
10.1088/1742-6596/443/1/012013
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The coincident Doppler broadening of the positron-electron annihilation radiation has been applied for the identification of vacancies in nano lead sulfide (nano-PbS) powders. The results of the positron annihilation studies on nano-PbS with different particle size are presented. Nano-PbS specimens have been synthesized by the chemical bath deposition in aqueous medium. Independently of the size of nanoparticles (from 12 to 16 nm) the positron lifetime (PLT) for all specimens has been found to be the same and equal to 391 +/- 1 ps. Independently of the size of nanoparticles the chemical surrounding of positron annihilation sites identified by coincident Doppler broadening measurements was the same, namely lead (Pb).
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页数：4
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