Interference effects in negative ion formation

Abstract:

This paper presents recent data on differential cross sections for H− formation from collisions of H+ and H0 with Ar in the energy range 1.0 to 4 keV. Experimental data exhibit a sharp maximum at 0° scattering angle as well as an oscillatory structure. The functional form and scaling properties strongly indicate that there is a glory maximum which occurs when the classical deflection function changes over from attractive to repulsive at some finite impact parameter. The oscillations are pbkp_redicted by the Bessel function and may be said to arise from interference of the contributions from the two branches of the deflection function near to a glory.

Año de publicación:

1984

Keywords:

Fuente:

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