Time-resolved spectroscopy and energy-resolved imaging of coated wire arrays as the interwire spacing is decreased

Author

Failor, B.H. ; Deeney, C. ; LePell, P.D. ; Riordan, J.C. ; Apruzese, J.P. ; Thornhill, J.W. ; Whitney, K.G. ; Nash, T.J. ; Yadlowsky, E.J. ; Moschella, J.J.

Author_Institution

Maxwell Phys. Int., San Leandro, CA, USA

Volume

30

Issue

2

fYear

2002

fDate

4/1/2002 12:00:00 AM

Firstpage

547

Lastpage

551

Abstract

We have spectroscopically observed, as suggested by Sanford et al. (1996), a transition from discrete wire implosions to the implosion of a more continuous plasma shell in aluminum-wire-array Z pinches driven by a 7-TW electrical generator. The time history of magnesium dopant K-shell X-ray emission depended on the interwire spacing, as well as whether the dopant was introduced as an alloy in or a coating on the aluminum wires. We diagnose the final assembly of the hot, dense K-shell emitting core, a region of the pinch not accessible to laser interferometry or optical/UV emission measurements.

Keywords

Z pinch; arrays; exploding wires; magnesium; plasma diagnostics; plasma impurities; time resolved spectra; 7 TW; Al; Al:Mg; aluminum-wire array z pinches; coated wire arrays; continuous plasma shell; discrete wire implosions; dopant alloy; dopant coating; electrical generator; energy-resolved imaging; hot dense K-shell emitting core; interwire spacing; magnesium dopant K-shell X-ray emission; plasma diagnostics; spectroscopy; time-resolved spectroscopy; Aluminum alloys; Generators; History; Magnesium; Optical imaging; Optical interferometry; Plasma diagnostics; Plasma x-ray sources; Spectroscopy; Wire;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2002.1024288

Filename

1024288