Angular distribution for H- formation and H(1s) elastic scattering from interaction of H(1s) with caesium
作者： P Pradel , M El Maddarsi , A Valance
DOI: 10.1088/0022-3700/14/3/030
关键词: Atomic physics 、 Caesium 、 Ionic bonding 、 Interatomic potential 、 Physics 、 Scattering 、 Scattering length 、 Cross section (physics) 、 Ionic potential 、 Elastic scattering
摘要: Simultaneous measurements of the differential electron attachment cross section and elastic scattering have been measured for H(1s) atoms colliding with a caesium vapour target. To interpret structures seen in all sections authors calculated semiclassical using lowest order stationary phase approximation, JWKB phaseshifts landau-Zener transition probability. For inelastic channel leading to H- production show two types oscillating features. The Stueckelberg oscillations are due interference from different potentials inside pseudo-crossing covalent ionic potential curves. Interference interatomic produces rainbow structure corresponding well depth De=1.90+or-0.04 eV at equilibrium separation X1 Sigma state. This is consistent attenuated observed on channel.
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