Development of multihundredjoule HF (H2/SF6) chemical lasers initiated by intense electron beams
Abstract
The development of an electron-beam initiated HF(H2/SF6) laser is described. Typical parameters of the circular electron beam used in the experiment are 2 MeV, 80 kA, 65 ns (FWHM), and 9 cm in diameter. The maximum laser energy of 250 J in a 70 ns FWHM pulse is obtained with an electrical efficiency of 8.3 percent at SF6/H2 = 200/2 (Torr). Initiation parameters are determined by theoretical HF laser simulation, such that the dissociation rate, the energy cost per F atom, and the chemical efficiency are 3 percent 6.5 eV/F, and 39 percent, respectively.
- Publication:
-
Japanese Journal of Applied Physics
- Pub Date:
- November 1983
- DOI:
- 10.1143/JJAP.22.L736
- Bibcode:
- 1983JaJAP..22L.736K
- Keywords:
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- Chemical Lasers;
- Electron Beams;
- Hf Lasers;
- Laser Outputs;
- Electron Pumping;
- Fluorides;
- Lasers and Masers