Comparative experimental and theoretical study on electron scattering by propane

被引：2

作者：

Baek, W. Y. ^{[1
]}

Braunroth, T. ^{[1
]}

Bug, M. U. ^{[1
]}

Heimbach, F. ^{[1
]}

Nettelbeck, H. ^{[1
]}

Rabus, H. ^{[1
]}

机构：

[1] PTB, Bundesallee 100, D-38116 Braunschweig, Germany

来源：

PHYSICAL REVIEW A | 2019年 / 100卷 / 01期

关键词：

EXCITATION CROSS-SECTIONS; ELASTIC-SCATTERING; SCREENING CORRECTIONS; MODEL; COLLISIONS; MOLECULES; ENERGY; APPROXIMATIONS; POSITRON; SIH4;

D O I：

10.1103/PhysRevA.100.012710

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Combined experimental and theoretical studies on electron scattering by propane were performed over a wide energy and angular range. The experimental values were compared to the results calculated using currently available theoretical and semiempirical approaches. The widely used independent atom model with screening corrected additivity rule coarsely reproduces the angular-dependent differential elastic cross sections of propane in the measured energy between 20 eV and 1 keV. For electron energies above 40 eV, the modified independent atom model, which takes into account multiple scattering within the molecule, yields better agreement with the experimental results. Total, integral elastic and integral inelastic electron scattering cross sections of propane were calculated using the spherical complex optical potential model and the variable phase approach. The suitability of the theoretical model is discussed by means of the experimental data.

引用

页数：9

共 50 条

[1]

[Anonymous], GAUSSIAN09

[2]

[Anonymous], 2004, EL SOURC EQ 22 35 VE

[3] Total electron scattering cross sections of alkanes at intermediate energies [J].