Electron collisions with tetrafluoroethylene ( C 2 F 4 ) and ethylene ( C 2 H 4 ) molecules

Absolute total cross sections (TCSs) for 0.6-370 eV electrons scattered by tetrafluoroethylene (C{sub 2}F{sub 4}) molecules have been measured using a linear transmission method. The TCS energy function for C{sub 2}F{sub 4} shows one very broad enhancement with the maximum value of 30x10{sup -20} m{...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2003-09, Vol.68 (3), Article 032715
Main Authors: Szmytkowski, Czesław, Kwitnewski, Stanisław, Ptasińska-Denga, Elżbieta
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
ATOMS
ELECTRON-MOLECULE COLLISIONS
ELECTRONS
ETHYLENE
EV RANGE
FLUORINE
HYDROGEN
MOLECULES
TOTAL CROSS SECTIONS
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Absolute total cross sections (TCSs) for 0.6-370 eV electrons scattered by tetrafluoroethylene (C{sub 2}F{sub 4}) molecules have been measured using a linear transmission method. The TCS energy function for C{sub 2}F{sub 4} shows one very broad enhancement with the maximum value of 30x10{sup -20} m{sup 2} located around 30 eV. On the low-energy slope of the TCS curve some weak features near 2.8, 9.5, and 16 eV are discernible. Above 50 eV the present TCS agrees well with theoretical predictions. Absolute TCS for ethylene (C{sub 2}H{sub 4}) has also been measured and compared with the TCS for C{sub 2}F{sub 4}. Effect of substitution of fluorine atoms for hydrogen (perfluorination effect) was indicated and discussed. The reported TCS for C{sub 2}H{sub 4} is distinctly higher than experimental data existing so far.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.68.032715