
%0 Journal Article
%A Siegmann, Bärbel 
%A Hippler, Rainer 
%T Angular Distribution of Hydrogen Fragment Ions in H<emph type="7">+</emph>&#8211;H<emph tye="8">2</emph> Collisions
%J Australian Journal of Physics
%D 1999/07/15
%V 52
%N 3
%P 537-544
%K 
%R https://doi.org/10.1071/PH99021
%U https://www.publish.csiro.au/paper/PH99021 
%X The angular distribution of H+ fragment ions produced in 5&#8211;25 keV H+&#8211;H2 collisions was investigated in coincidence with Lyman-&#945; photons. The observed photons arise from electron capture to the projectile H(2p) state and/or from the fragmentation of the H2 molecule via 2s&#963;g, 2p&#963;u or 2p&#928; u states of the excited H+2* ion. An analysis of the measured angular distributions has been performed to distinguish the separate degenerate channels available to an emitted Lyman-&#945; photon. The results show similarities to the data of Lindsay et al. (1987) who measured the non-coincident angular distribution of H+ fragment ions within the same energy range. 
