Eur. Phys. J. D (2017) 71: 213
https://doi.org/10.1140/epjd/e2017-80199-1

Regular Article

Low energy cross sections for electron scattering from tetrafluoroallene

¹ Plasma Technology Research Center, National Fusion Research Institute, 37 Dongjangsan-ro, Gunsan, Jeollabuk-do 54004, South Korea
² Department of Mathematics, Scottish Church College, 1 & 3 Urquhart Sq, 700 006 Kolkata, India

^a e-mail: dhanojsanjay@gmail.com

Received: 22 March 2017
Received in final form: 7 June 2017
Published online: 8 August 2017

Abstract

We report elastic, total, excitation, differential and momentum-transfer cross sections for scattering of low-energy electrons by tetrafluoroallene (C₃F₄) using the close-coupling (CC) approximation in the R-matrix method with Quantemol-N. We have tested various target models initially to check for the convergence of the result and the final results are provided with the best target model. We have detected shape resonances of symmetry ²E(²B₁,²B₂) at 3.08 eV and 3.71 eV with a close-coupling and static exchange models which is seen as a sharp feature in the elastic and momentum transfer cross sections. We also detected other resonances of symmetry ²E at 11.26 eV and of symmetry ²A₂ at 11.12 eV below the ionization threshold of the target respectively. The present elastic and total cross sections are compared with the elastic and total cross sections of allene (C₃H₄), propene (C₃H₆) and hexafluoropropene (C₃F₆) as there were no results available for C₃F₄. The effect of fluorination is clearly seen with the shape resonance for C₃F₄ getting slightly shifted to higher energies compared to allene. Finally, we also report the ionization cross section calculated using the Binary-Encounter Bethe (BEB) method. The present calculation is a maiden attempt to find cross sections for C₃F₄ molecule which could be useful for fluorocarbon plasma modeling.