Cross sections for electron scattering by propane in the low- and intermediate-energy ranges

被引：29

作者：

de Souza, G. L. C. ^{[1
]}

Lee, M. -T. ^{[1
]}

Sanches, I. P. ^{[1
]}

Rawat, P. ^{[1
]}

Iga, I. ^{[1
]}

dos Santos, A. S. ^{[2
]}

Machado, L. E. ^{[2
]}

Sugohara, R. T. ^{[2
]}

Brescansin, L. M. ^{[3
]}

Homem, M. G. P. ^{[4
]}

Lucchese, R. R. ^{[5
]}

机构：

[1] Univ Fed Sao Carlos, Dept Quim, BR-13565905 Sao Carlos, SP, Brazil

[2] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP, Brazil

[3] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil

[4] Univ Fed Santa Catarina, Dept Fis, BR-88010970 Florianopolis, SC, Brazil

[5] Texas A&M Univ, Dept Chem, College Stn, TX USA

来源：

PHYSICAL REVIEW A | 2010年 / 82卷 / 01期

基金：

巴西圣保罗研究基金会;

关键词：

IMAGINARY PART; IMPACT; MODEL; COLLISIONS; MOLECULES; HYDROCARBONS; CHEMISTRY; POSITRON; C3H8;

D O I：

10.1103/PhysRevA.82.012709

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a joint theoretical-experimental study on electron scattering by propane (C3H8) in the low- and intermediate-energy ranges. Calculated elastic differential, integral, and momentum transfer as well as total (elastic + inelastic) and total absorption cross sections are reported for impact energies ranging from 2 to 500 eV. Also, experimental absolute elastic cross sections are reported in the 40- to 500-eV energy range. A complex optical potential is used to represent the electron-molecule interaction dynamics. A theoretical method based on the single-center-expansion close-coupling framework and corrected by the Pade approximant is used to solve the scattering equations. The experimental angular distributions of the scattered electrons are converted to absolute cross sections using the relative flow technique. The comparison of our calculated with our measured results, as well as with other experimental and theoretical data available in the literature, is encouraging.

引用

页数：8

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