In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 36, No. 4R ( 1997-04-01), p. 2346-
Abstract:
During the early phase of electrothermal gun operation, the operation characteristics improve at low ambient pressures because the discharge occurs on the surface of the capillary, resulting in a higher rate of wall ablation and a higher capillary plasma density than in the case of operation at higher ambient pressures. In addition, it has been reported that reduction of the capillary diameter at low pressures results in an increase in the kinetic energy of the projectile. At low pressures, an electrothermal gun with a small capillary diameter is therefore superior to one with a large capillary diameter. In order to understand these experimental results clearly, we measured the plasma parameters of electron density and temperature, which are strongly related to the operation characteristics of the electrothermal gun, for different capillary diameters using a spectroscopic technique, and compared the results with results for a zero-dimensional time-dependent model. The electron density of the capillary plasma increases with decreasing capillary diameter.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.36.2346
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1997
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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