Heavy ion beam induced charge transfer in Ar-Cs mixtures
- Rutgers Univ., Newark, NJ (United States)
- Technical Univ., Muenchen (Germany)
In situ production of target ions in cold, dense matter by heavy ion collisions and subsequent selective charge transfer may provide an effective pumping scheme for heavy ion beam pumped lasers. Charge transfer from cesium atoms to doubly charged argon ions was used for selective population of 4d-levels in Ar II. The argon ions were produced in an argon-cesium gas target by a pulsed beam of 100 MeV {sup 32}S{sup 8+} ions from the Munich Tandem van de Graaff accelerator. The ion beam of 12 {times} 10{sup 6} ions/pulse had a pulse width of 2 ns and a repetition rate of 32 kHz. The argon pressure was typically 250 mbar. The cesium partial pressure was adjusted by heating the gas target, including a cesium reservoir, to temperatures between 250 and 500{degrees}C. Time resolved wavelength spectra showed large intensity increases corresponding to 4d {sup 4}D and 4d {sup 4}F to 4p transitions in Ar II in the ultraviolet wavelength region between 300 and 400 nm. This is interpreted as a resonant charge transfer of outer electrons of cesium to 4d levels in Ar II in Cs{sup 0} + Ar{sup 2+} collisions.
- OSTI ID:
- 67890
- Report Number(s):
- CONF-9310400-; ISSN 0003-0503; TRN: 95:000870-0053
- Journal Information:
- Bulletin of the American Physical Society, Vol. 38, Issue 13; Conference: 46. annual gaseous electronics conference, Montreal (Canada), 19-22 Oct 1993; Other Information: PBD: Dec 1993
- Country of Publication:
- United States
- Language:
- English
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