1. bookVolume 60 (2015): Issue 4 (December 2015)
Journal Details
License
Format
Journal
eISSN
1508-5791
First Published
25 Mar 2014
Publication timeframe
4 times per year
Languages
English
access type Open Access

The detection of reverse accumulation effect in the positron annihilation profile of stack of aluminum and silver foils

Published Online: 01 Dec 2015
Volume & Issue: Volume 60 (2015) - Issue 4 (December 2015)
Page range: 713 - 716
Received: 18 Jun 2015
Accepted: 13 Aug 2015
Journal Details
License
Format
Journal
eISSN
1508-5791
First Published
25 Mar 2014
Publication timeframe
4 times per year
Languages
English
Abstract

The implantation profile of positrons emitted from 22Na into a stack of aluminum and silver foils is the subject of the presented report. The characteristic dimple in the profile behind the Ag foil was detected. This effect arises from the differences in the linear absorption coefficient of aluminum and silver. The good agreement between the theoretical profile obtained within the multiscattering model and experimental one was achieved. The observed phenomenon can affect the positron annihilation characteristics measured for the inhomogeneous samples.

Keywords

1. Carron, N. J. (2007). An introduction to the passage of energetic particles through matter. New York: Taylor and Francis.Search in Google Scholar

2. Dryzek, J., & Siemek, K. (2013). The accumulation effect of positrons in the stack of foils, detected by measurements of the positron implantation profile. J. Appl. Phys., 114, 224901–224906. DOI: 10.1063/1.4843035.10.1063/1.4843035Search in Google Scholar

3. Dryzek, J., & Siemek, K. (2015). Positron accumulation effect in particles embedded in a low-density matrix. J. Appl. Phys., 117, 055901-7. DOI: 10.1063/1.4906400.10.1063/1.4906400Search in Google Scholar

4. Dryzek, J. (2005). Defect depth scanning over the positron implantation profile in aluminum. Appl. Phys. A, 81, 1099–1104. DOI: 10.1007/s00339-004-2966-6.10.1007/s00339-004-2966-6Search in Google Scholar

5. http://www.ifj.edu.pl/~mdryzek/index.html for LYS-1 program.Search in Google Scholar

Recommended articles from Trend MD

Plan your remote conference with Sciendo