Infrared emission as a diagnostic for a collapsing gas shell < pinch
The shape and absolute intensity of the infrared emission as a function of wavelength can yield information about the conditions in a plasma. This diagnostic technique has been reviewed by Zwicker, who gives several examples of its application to low density plasmas. They have applied this diagnostic, for the first time, to a high density (approx. 10/sup 20/ cm/sup -3/) plasma, a collapsing gas (argon) shell Z pinch. Using a fast Au doped Ge detector and infrared notch filters they have scanned the emitted spectrum from approx. 0.5 to 8.2 ..mu..m with 1-ns time resolution. This spectral range encompasses the optically thin-to-thick transition as well as the plasma frequency at the time of peak compression. The authors will present this data along with an interpretation which allows us to follow the development of the pinched column during the thermalization stage.
- Research Organization:
- Los Alamos National Lab., NM
- OSTI ID:
- 5197115
- Report Number(s):
- CONF-840922-; TRN: 86-031892
- Journal Information:
- Rev. Sci. Instrum.; (United States), Vol. 56:5; Conference: 5. APS topical conference on high temperature plasma diagnostics, Tahoe City, CA, USA, 16 Sep 1984
- Country of Publication:
- United States
- Language:
- English
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