A study of relationship between optical basicity and positron lifetime in oxides

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A study of relationship between optical basicity and positron lifetime in oxides

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- A study of relationship between optical basicity and positron lifetime in oxides
- NUCLEAR TECHNIQUES Issue 10, (1994)
- 作者机构：
  
  重庆大学
- 作者简介：
- 基金信息：
- DOI：
  CLC： O614
- Published：01 October 1994
- 稿件说明：
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[1]徐宗亮,刘尚进.氧化物光学碱度与正电子寿命关系的研究[J].核技术,1994(10):636-640.

A study of relationship between optical basicity and positron lifetime in oxides[J]. Nuclear techniques, 1994, (10).
[1]徐宗亮,刘尚进.氧化物光学碱度与正电子寿命关系的研究[J].核技术,1994(10):636-640. DOI：

A study of relationship between optical basicity and positron lifetime in oxides[J]. Nuclear techniques, 1994, (10). DOI：

摘要

对快速激冷（冷速＞１８０Ｋ·ｓ－１）９９Ｎ８２Ｏ－Ｂ２Ｏ３熔盐、Ｂ２Ｏ３、ＳｉＯ２、Ｖ２Ｏ５和Ｎａ２Ｏ－ＴｉＯ２熔盐的正电子湮没寿命谱作了测定。结果表明：非过渡金同氧化物的光学碱度Ａ与相应的正电子寿命谱第一组分τ１有很好的线性关系Ａ＝０．１７３τ－１＋０．０６０．据此求得过渡金属氧化物ＺｎＯ、ＴｉＯ２和Ｖ２Ｏ５的Ａ实验值分别为１．００、０．６３和０７５。

Abstract

ositron annihilation lifetime spectra have been measured for the samples of Na2O-B2O3 melt. B2O3

SiO2. V2O5 and Na2O-TiO2 melt during sharp cooling with a cooling rate>180K.s 1.The results show a quite well linear relation between optical basicity A and the first component τ1 of the lifetime spectra for non-transition metal oxides: A= 0.173 （1/ τ1） +0.060.With this relationship and τ1measured by PA the A values for ZnO.TiO2 and V2O5.are obtained to be 1.00. 0.63 and 0.75 respectively

approaching the literature values.

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