Transport coefficients for positron swarms in nitrogen

被引：29

作者：

Bankovic, A. ^{[1
]}

Marler, J. P. ^{[2
]}

Suvakov, M. ^{[1
]}

Maiovic, G. ^{[1
]}

Petrovic, Z. Lj. ^{[1
]}

机构：

[1] Inst Phys, Belgrade 11080, Zemun, Serbia

[2] Lawrence Univ, Appleton, WI 54911 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2008年 / 266卷 / 03期

关键词：

positrons; drift velocity; mobility; nitrogen; transport; NEGATIVE DIFFERENTIAL CONDUCTIVITY; ANNIHILATION; IONIZATION; SCATTERING; H-2; N-2;

D O I：

10.1016/j.nimb.2007.12.025

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Monte Carlo simulations of positron transport in nitrogen have been performed based on a complete set of cross sections that has been updated as a result of both experimental and theoretical advances. As the positronium formation cross section becomes dominant at larger mean energies in nitrogen than in argon and hydrogen the effect is much smaller in the case of nitrogen. Nevertheless, the differences between bulk and flux transport coefficients, even in nitrogen, exceed those for electrons, providing another example of the very special case of transport of charged particles under the influence of strong non-conservative collisions. (c) 2007 Elsevier B.V. All rights reserved.

引用

收藏

页码：462 / 465

页数：4

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