Positron-impact ionization of atoms and molecules

被引：8

作者：

Campeanu, R. I. ^{[1
]}

机构：

[1] York Univ, Dept Phys & Astron, Toronto, ON M3J 2R7, Canada

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2009年 / 267卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Distorted-wave methods; Positron collisions; Atoms and molecules ionization; SINGLE IONIZATION; ELECTRON-CAPTURE; CROSS-SECTIONS; CONTINUUM; H-2; NE; AR; HE; HYDROGEN; HELIUM;

D O I：

10.1016/j.nimb.2008.10.010

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

This paper presents the level of agreement between theory and experiment for positron-impact ionization of atoms and molecules. Distorted-wave theoretical models are able to reproduce the experimental integrated cross sections for atoms and diatomic molecules. The ECC phenomenon seen in the experimental triple differential cross sections can be obtained with a BBK-type model, but for very low impact energies the theory requires the inclusion of the coupling with the positronium formation channel. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：239 / 243

页数：5

共 50 条

[21] POSITRON-IMPACT IONIZATION OF ATOMIC-HYDROGEN
ACACIA, P
CAMPEANU, RI
HORBATSCH, M
MCEACHRAN, RP
STAUFFER, AD
PHYSICS LETTERS A, 1993, 179 (03) : 205 - 208
[22] Positron-impact ionization, positronium formation, and electronic excitation cross sections for diatomic molecules
Marler, JP
Surko, CM
PHYSICAL REVIEW A, 2005, 72 (06):
[23] Theoretical threshold law of positron-impact ionization of He
Kuo, TY
Sun, HL
Huang, KN
PHYSICAL REVIEW A, 2003, 67 (01):
[24] Dynamical orientation effects in the ionization of atoms and molecules by positron impact
Fiol, J.
Barrachina, R. O.
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2009, 42 (23)
[25] Positronium formation and ionization of atoms and diatomic molecules by positron impact
Singh, Suvam
Antony, Bobby
EPL, 2017, 119 (05)
[26] Positron-Impact Excitation of Hydrogen Atoms in Debye Plasmas
Zhang Song-Bin
Qi Yue-Ying
Que Yi-Zhi
Chen Xiang-Jun
Wang Jian-Guo
CHINESE PHYSICS LETTERS, 2010, 27 (01)
[27] Near-threshold ionization of atoms and molecules by positron impact
Campeanu, RI
Nagy, L
Stauffer, AD
CANADIAN JOURNAL OF PHYSICS, 2003, 81 (07) : 919 - 927
[28] POSITRONIUM FORMATION BY POSITRON-IMPACT ON ATOMS AT INTERMEDIATE ENERGIES
BRANSDEN, BH
NOBLE, CJ
ADVANCES IN ATOMIC, MOLECULAR, AND OPTICAL PHYSICS, VOL 32, 1994, 32 : 19 - 37
[29] Electron- and positron-impact ionization of inert gases
Campeanu, R., I
Walters, H. R. J.
Whelan, Colm T.
PHYSICAL REVIEW A, 2018, 97 (06)
[30] SINGLE IONIZATION OF HE, NE AND AR BY POSITRON-IMPACT
JACOBSEN, FM
FRANDSEN, NP
KNUDSEN, H
MIKKELSEN, U
SCHRADER, DM
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1995, 28 (21) : 4691 - 4695

← 1 2 3 4 5 →