Nonequilibrium simulation of the commutation phase in a back-lit thyratron
Conference
·
OSTI ID:5772407
The operating cycle of thyratrons and related switches can be divided into four phases: voltage hold-off, commutation, conduction, and recovery. In this paper a computer simulation of the commutation phase of a back-lit thyratron (BLT) is presented. The BLT consists of opposing hollow cylindrical electrodes with an axial hole. Triggering is accomplished by illuminating the back side of the hollow cathode with UV light and generating photoelectrons. The operating characteristics of the BLT have been experimentally investigated by Kirkman and Gundersen, Kirkman et al and Hartmann et al. Several models have been developed independently to study the early stages in the formation of the high current discharge in BLT and related pseudopark switches. Hopefully in the near future the merits of these models, including the one presented here, will be benchmarked with experimental data for the same set of physical parameters. In the meantime these models have been useful in the understanding various physics features in the operation of these switches. 9 refs., 3 figs., 1 tab.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5772407
- Report Number(s):
- UCRL-JC-106474; CONF-910711--2; ON: DE91010471
- Country of Publication:
- United States
- Language:
- English
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