H+ + H(1s) collisions at intermediate impact velocities as a new source of UV and VUV radiation

Details H+ + H(1s) collisions at intermediate impact velocities as a new source of UV and VUV radiation H+ + H(1s) collisions at intermediate impact velocities as a new source of UV and VUV radiation

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...419....1m&link_type=abstract

Astronomy and Astrophysics, v.419, p.1-5 (2004)

Astronomy and Astrophysics

Astrophysics

2

Atomic Processes, Radiation Mechanisms: General, Stars: Atmospheres

Scientific paper

The process of radiative charge exchange in H+ + H(1s) collisions at the intermediate ion-atom impact velocities are treated in this work as a source of continuous EM emission in the UV and VUV range. The spectral intensity of this emission is determined, within the semiclassical method developed in previous works, for the ion-atom impact energies (in the center of mass reference frame) from 0.5 keV to 12.5 keV. The results obtained show that the spectral intensity of the examined EM emission increases for several orders of magnitude when passing from the visible to the VUV range of wavelength, and that the position of the maximum of this spectral intesity drifts with increase of collision energy from λ ≅ 51 nm to λ ≅ 18 nm. These results imply that considered radiation processes may be of interest in astrophysics as a new sources of continuous short-wave EM emission.

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