Low-energy positron scattering from C2H2⋆
Instituto de Física e Matemática, Universidade Federal de Pelotas, 96010-900 Pelotas, Rio Grande do Sul, Brazil
2 Departamento de Física, Universidade Federal de Santa Catarina, 88040-900 Florianópolis, Santa Catarina, Brazil
a e-mail: email@example.com
Received in final form: 7 January 2020
Published online: 13 February 2020
We present positron scattering cross sections with C2H2 molecules obtained with the Method of Continued Fractions in the static plus correlation polarization level. The differential and integral cross sections are compared with available theoretical and experimental approaches, and sensible improvement in the description of the qualitative behaviour of the differential cross sections is observed. These improvements are discussed through the evaluation of the average absolute differences between theoretical approaches and the respective normalized experimental data. Our elastic integral cross sections exhibit good agreement with model and ab initio approaches and with the available experimental data.
© EDP Sciences / Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature, 2020