Paper Title:
The Calculation of Positron Lifetime in Ni3Al Alloy
  Abstract

Superposed-neutral-atom model and the finite-difference method (SNA-FD) are used to calculate the positron lifetime of different sizes and types of vacancy clusters in Ni3Al alloy. The calculated positron bulk lifetime in Ni3Al agrees well with the experimental results mentioned in literatures. The positron lifetimes of vacancy clusters with the same amount of vacancy but different components are also calculated. The results show that the positron lifetime is different when its components are different. The positron lifetimes of vacancy clusters with a single element but different sizes are also calculated. The result shows that the positron lifetime is almost a constant when its component is only Al vacancy, but the positron lifetime will increase at first and trend to be a constant when its component is only Ni vacancy.

  Info
Periodical
Edited by
S. J. Wang, Z. Q. Chen, B. Wang and Y. C. Jean
Pages
146-148
DOI
10.4028/www.scientific.net/MSF.607.146
Citation
X. L. Chen, W. F. Guo, H. J. Du, H. M. Weng, B. J. Ye, "The Calculation of Positron Lifetime in Ni3Al Alloy", Materials Science Forum, Vol. 607, pp. 146-148, 2009
Online since
November 2008
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$32.00
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