Temperature dependence of positron annihilation in iron and vanadium
Temperature dependence of positron annihilation in iron and vanadium
复制标题
铁和钒中正电子湮灭的温度依赖性
DOI：
10.1007/bf00931417
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发表时间：
1978
期刊：
影响因子：
--
通讯作者：
J. Jackman
中科院分区：
文献类型：
--
作者：
C. W. Schulte;J. Campbell;J. Jackman
测量了铁和钒的多普勒展宽线形随温度的变化，空位在γ-Fe中产生强的俘获效应，而在V中产生弱的俘获效应，俘获阈值温度T_t分别为1280±25和1370±30 K。讨论了Tt与自扩散能QSD和单空位形成能H1 vF之间的经验线性关系，并用于确定γ-Fe和V的H1 vF值。
The Doppler broadened lineshape is measured as a function of temperature for iron and vanadium; vacancies produce a strong trapping effect in γ-Fe, but a weak effect in V. Threshold temperaturesTtfor trapping are 1280±25 and 1370±30 K. Empirical linear relationships betweenTt, self-diffusion energyQSDand monovacancy formation energyH1vFare discussed and used to determineH1vFvalues for γ-Fe and V.