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2017 | 132 | 5 | 1482-1485
Article title

Evaluation of Positron Implantation Profiles in Various Materials for ²²Na Source

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EN
Abstracts
EN
Positron implantation profiles in various materials for ²²Na isotope source are discussed. The spatial distribution of positrons in materials with densities from 1 to 21 g/cm³ are simulated using GEANT4 code. The results indicate that depth distributions of thermalized positrons in any homogeneous medium can be described by the sum of two exponential functions. Contribution of the short-range exponent is about 11% in the materials. The both absorption coefficients can be well represented as a function of material density and atomic number. Proposed empirical model agrees well with available experimental data.
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Contributors
author
  • National Research Nuclear University MEPhI, 115409, Kashirskoe shosse, 31, Moscow, Russia
  • NRC Kurchatov Institute, Institute of Theoretical and Experimental Physics, 117218, Bolshaya Cheremushkinskaya Str., 25, Moscow, Russia
author
  • National Research Nuclear University MEPhI, 115409, Kashirskoe shosse, 31, Moscow, Russia
author
  • National Research Nuclear University MEPhI, 115409, Kashirskoe shosse, 31, Moscow, Russia
  • NRC Kurchatov Institute, Institute of Theoretical and Experimental Physics, 117218, Bolshaya Cheremushkinskaya Str., 25, Moscow, Russia
author
  • NRC Kurchatov Institute, Institute of Theoretical and Experimental Physics, 117218, Bolshaya Cheremushkinskaya Str., 25, Moscow, Russia
author
  • National Research Nuclear University MEPhI, 115409, Kashirskoe shosse, 31, Moscow, Russia
  • NRC Kurchatov Institute, Institute of Theoretical and Experimental Physics, 117218, Bolshaya Cheremushkinskaya Str., 25, Moscow, Russia
References
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  • [6] Xia Ning, Xingzhong Cao, Chong Li, Demin Li, Peng Zhang, Yihao Gong, Rui Xia, Baoyi Wang, Long Wei, Nucl. Instrum. Methods Phys. Res. B 397, 75 (2017), doi: 10.1016/j.nimb.2017.02.038
Document Type
Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv132n5p09kz
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