Laser Action of Ionized and Neutral Atomic Lines in Electron-Beam-Produced Rare Gas Plasmas
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Rare gas plasmas (He through Xe) were produced by a short-pulsed, high-current electron beam (600 kV, 10 kA peak, 3 ns FWHM) in a drift tube without external field over a wide pressure range (0.1〜80 Torr). The emission spectra of the plasmas were observed between 2500 and 8500Å with a spectrograph and bandpass filters from both end- and side-views. Self-terminating laser emissions (3 ns FWHM, 10〜400 W peak) travelling along with the electron-beam pulse were found for 20 spectral lines of singly-ionized and neutral Ne, Ar, Kr, and Xe atoms through the end window of the drift tube, and the small-signal gain coefficients were measured. The temporal behaviours of the emission intensity were measured for the laser lines and for many other spontaneous lines through the side window, and the atomic processes of the laser excitations were examined.
- 社団法人応用物理学会の論文
- 1980-08-05
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