Luminescence from He+O2 collisions at low energy

✍ Scribed by H.H. Harris; M.G. Crowley; J.J. Leventhal

• Book ID: 103013571
• Publisher: Elsevier Science
• Year: 1974
• Tongue: English
• Weight: 749 KB
• Volume: 29
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(74)85086-4

✦ Synopsis

The emission spcctni&~~esulting from He+ -6, collisions in.tht kinetic energy range 25-400 eV has been measured beWeen, 1940 end 8500 A. The results &O-W that highly endeergic charge transfer processes dominate the spec-" !.rum, &.hough exoerpic procc~ses with excited 0: p,-o&&ion also occur, 'fhe nearly rasomnt charge exchange process yielding ground state He atoms and O$[c 4Z; (v=O)] does no-: OCCIU with high probability. -. 1;Intrdduction .. .' ,, fig.. 1 which shows the potential enera curves [l, 2) 'of the appropriate electronic states of 0; as well as ., '-It isnow Prell established that aton'ric retiangement some states of the He atom which are involved in the and electron transfer in positive:ion-n&tral-molecule obse~ved,fransitions. -The energy s&e is referred to .. collisions at IoW energies dan yield products which con-the lS ground state of' He and the V =0 level of the t&relatively large &noun& (several eV) of internal X 3X; state of the 0, molecule. dn'ergy. Aithough kinematic analysis of the collision Several imp&t&t feat&s of the He+-O2 system productsmay be us&to identify energy states, a more are evident from fig. 1. The electron.transfer process direct and precise method is by'obseruatlon of.the emission spectrum of the product species. The work Hef(ls~2S)+02[X3T;g(v=O)J

;

reportedhere is such ti study for He+(ls 2@-02.

-'(xq-) 11 .

• He@ IS) +.O",[c !.Z;(v=O)]

'.