Total and positronium formation cross sections for positron scattering from H2O and HCOOH

被引：65

作者：

Makochekanwa, Casten ^{[1
]}

Bankovic, Ana ^{[2
]}

Tattersall, Wade ^{[1
,3
]}

Jones, Adric ^{[1
]}

Caradonna, Peter ^{[1
]}

Slaughter, Daniel S. ^{[1
]}

Nixon, Kate ^{[4
]}

Brunger, Michael J. ^{[4
]}

Petrovic, Zoran ^{[2
]}

Sullivan, James P. ^{[1
]}

Buckman, Stephen J. ^{[1
]}

机构：

[1] Australian Natl Univ, ARC Ctr Antimatter Matter Studies, Res Sch Phys & Engn, Canberra, ACT 0200, Australia

[2] Univ Belgrade, Inst Phys Belgrade, Zemun 11080, Serbia

[3] James Cook Univ, ARC Ctr Antimatter Matter Studies, Townsville, Qld 4810, Australia

[4] Flinders Univ S Australia, ARC Ctr Antimatter Matter Studies, Sch Chem Phys & Earth Sci, Adelaide, SA 5001, Australia

来源：

NEW JOURNAL OF PHYSICS | 2009年 / 11卷

基金：

澳大利亚研究理事会;

关键词：

WATER-MOLECULES; FORMIC-ACID; INELASTIC-SCATTERING; ELECTRON COLLISIONS; VAPOR; NH3; CO2;

D O I：

10.1088/1367-2630/11/10/103036

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Total and positronium formation cross sections have been measured for positron scattering from H2O and HCOOH using a positron beam with an energy resolution of 60 meV (full-width at half-maximum (FWHM)). The energy range covered is 0.5-60 eV, including an investigation of the behavior of the onset of the positronium formation channel using measurements with a 50 meV energy step, the result of which shows no evidence of any channel coupling effects or scattering resonances for either molecule.

引用

页数：22

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