Article
Double electron capture cross-sections by protons in collisions with He
Fecha
2009Autor
Gonzalez-Magana, O.
Cabrera-Trujillo, R.
Gleason, C.
Salazar, M.
Hinojosa, G.
Institución
Resumen
Double electron capture (DEC) by protons from He was studied in collisions at energies in the keV regime, theoretically and experimentally. Theoretical cross-sections were calculated using the electron nuclear dynamic approach and a binomial distribution method in the energy range 1-100keV. Experimental cross-sections were measured by means of the grow-rate method in the energy range of 4-10keV. The cross-sections measured are consistent with those of the previous data at the high energies of the measured interval and show a different trend for the low energy. This behavior is consistent with those of other DEC cross-sections measured by protons from He-like targets. With the two collision models, it is proven that the reference data for this system are consistent only with the assumption of uncorrelated electrons and with independent target-projectile nuclei dynamics.