Collisional electron detachment of atomic anions by noble gases: universal behavior at intermediate velocities
AUTOR(ES)
Zappa, F., Coelho, L.F.S., Jalbert, Ginette, Rocha, A. B., Magalhães, S.D., Castro Faria, N.V. de
FONTE
Brazilian Journal of Physics
DATA DE PUBLICAÇÃO
2004-09
RESUMO
Anions with atomic number lower than 18 had their total electron detachment cross sections measured in the 0.3-1.5 a.u. velocity range (40 keV-1.4 MeV) for He, Ne, and Ar targets with a experimental method developed in our laboratory. Several universal trends were observed: (a) each cross section can be described as the product of a target-dependent curve by a projectile-dependent constant; (b) for a given target all cross sections present a maximum at almost the same velocity; (c) the cross section ratios taken between different periods in a given column are target-independent.
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