Vibrationally inelastic and elastic cross sections for e+NF3 collisions

被引：25

作者：

Boesten, L ^{[1
]}

Tachibana, Y ^{[1
]}

Nakano, Y ^{[1
]}

Shinohara, T ^{[1
]}

Tanaka, H ^{[1
]}

Dillon, MA ^{[1
]}

机构：

[1] ARGONNE NATL LAB, ARGONNE, IL 60439 USA

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1996年 / 29卷 / 22期

关键词：

D O I：

10.1088/0953-4075/29/22/022

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Absolute elastic cross sections for electron impact on nitrogen trifluoride (NF3) have been recorded for impact energies from 1.5 to 100 eV and scattering angles from 20 degrees to 130 degrees. Because of the small dipole moment, estimates of the integrated and momentum-transfer cross sections were obtained by extrapolation of the angular range with the help of a modified phase-shift program and subsequent numerical integration under the fits. Vibrational excitation function measurements show a 2 eV wide resonance at 3 eV impact energy. Vibrational loss spectra were measured near this resonance and resolved into their vibrational components v(1) and v(3). From the angular behaviour of these fundamental modes, the resonance can be assigned to a temporary trapping of the impinging electron in the antibonding orbital of irreducible species 'e', the LUMO orbit.

引用

页码：5475 / 5491

页数：17

共 82 条

[71] VIBRATIONAL-EXCITATION OF CH4 BY ELECTRON-IMPACT - 3-20 EV [J].