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http://hdl.handle.net/1843/64018| Type: | Artigo de Periódico |
| Title: | Close-coupling scattering cross sections and a model for positron cooling in a buffer gas of molecular nitrogen |
| Authors: | Luis Argel Poveda Calviño Denise da Costa Assafrão de Lima Jenifer Geribola Pinheiro José Rachid Mohallem |
| Abstract: | Cross sections for positron scattering from molecular nitrogen are reported for energies below the positronium formation threshold. The elastic and state-to-state rotational and vibrational cross sections were obtained within the close-coupling formalism, using a three-dimensional potential energy surface for the interaction of the system. The inelastic cross sections was involved in a kinetic model to describe recent experimental results about positron cooling in a buffer gas of molecular nitrogen. Unlike a previous model [M. R. Natisin et al., J. Phys. B 47, 225209 (2014)], our prediction attributes a leading role to the 0→1 vibrational excitation of N2. |
| Subject: | Positrons |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICX - DEPARTAMENTO DE FÍSICA |
| Rights: | Acesso Restrito |
| metadata.dc.identifier.doi: | https://doi.org/10.1103/PhysRevA.100.062706 |
| URI: | http://hdl.handle.net/1843/64018 |
| Issue Date: | 2019 |
| metadata.dc.url.externa: | https://journals.aps.org/pra/abstract/10.1103/PhysRevA.100.062706 |
| metadata.dc.relation.ispartof: | Physical Review A |
| Appears in Collections: | Artigo de Periódico |
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