CO$_{2}$-Laser mit Elektronenstrahl-Ionisierung
CO$_{2}$-Laser mit Elektronenstrahl-Ionisierung
For the excitation of CO$_{2}$-lasers with pulse-energies up to kilojoules the discharges are required to have large energy input per volume at low E/p-values and at pressures $\geq$ 1 bar. In large volumes such discharges can only be established by the external ionisation of the gas. For this purpo...
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Personal Name(s): | Mioduszewski, P. (Corresponding author) |
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Contributing Institute: |
Publikationen vor 2000; PRE-2000; Retrocat |
Imprint: |
Jülich
Kernforschungsanlage Jülich, Verlag
1974
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Physical Description: |
35 p. |
Document Type: |
Report Book |
Research Program: |
ohne Topic |
Series Title: |
Berichte der Kernforschungsanlage Jülich
1125 |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
For the excitation of CO$_{2}$-lasers with pulse-energies up to kilojoules the discharges are required to have large energy input per volume at low E/p-values and at pressures $\geq$ 1 bar. In large volumes such discharges can only be established by the external ionisation of the gas. For this purpose a suitable electron beam generator with a pulse-heated tungsten filament cathode has been built. At excitation durations of some microseconds electron densities of about 10$^{13}$ cm$^{-3}$ cou1d be achieved in the laser gas. With an electric field of 4 kV/cm in the gas volume the energy input was 200 J/l. The attempt was made to get information about the electron loss mechanism from the current time his tory that results after the electron beam has been switched off. Volume recombination, that is proportional to the square of the e1ectron density as the on1y relevant loss mechanism could not be approved experimentally. Operating the laser as an oscillator pulses with energies of some joules have been obtained out of a volume of 0,6 l. |