Total cross sections of electron and positron collisions withC3F8andC3H8molecules and differential elastic and vibrational excitation cross sections by electron impact on these molecules

• DOI: 10.1103/physreva.59.2006
• Publication Date: 2002-07-26T21:41:50Z
• Authors: Hiroshi Tanaka; Yoshio Tachibana; Masashi Kitajima; Osamu Sueoka; Hideki Takaki; Akira Hamada; Mineo Kimura
• Keywords: Electron scattering

Total cross sections for electron ${(e}^{\ensuremath{-}})$ and positron ${(e}^{+})$ scattering from ${\mathrm{C}}_{3}{\mathrm{H}}_{8}$ ${\mathrm{C}}_{3}{\mathrm{F}}_{8}$ have been measured 0.8 to 600 eV 0.7 eV, respectively. We also investigated differential elastic by impact 2.0 200 compared them with the present theoretical results. For ${e}^{\ensuremath{-}}$ ${\mathrm{C}}_{3}{\mathrm{H}}_{8},$ are found be larger a factor of 2 than those ${e}^{+}$ below 20--30 eV. They show large peak at 8 due shape resonance shoulderlike structure in region 20--40 ${\mathrm{C}}_{3}{\mathrm{F}}_{8},$ again least 50 they two peaks 4 followed broad Some small structures overlie hump. Both quickly approach each other beyond From section study, we able provide more detailed information on resonances, carried out some analysis resonances vibrational excitation In general, total integrated good qualitative quantitative agreement.