EUV spectroscopy of plasmas created in the final anode-cathode gap of the Z-Machine high-current pulsed generator (SNL)

Journal Article · Sat Nov 15 04:00:00 EST 2008 · Plasma Physics Reports

DOI:https://doi.org/10.1134/S1063780X08110081· OSTI ID:21399951

Shevelko, A P ^[1]; Bliss, D E ^[2]; Kazakov, E D ^[1]; Mazarakis, M G; McGurn, J S ^[2]; Knight, L V ^[3]; Struve, K W ^[2]; Tolstikhina, I Yu ^[1]; Weeks, T J ^[3]

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1. Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)
2. Sandia National Laboratories (United States)
3. Brigham Young University (United States)

The effect of short-circuit across the final anode-cathode gap of powerful pulsed current generators could hamper efficient power delivery to the Z-pinch plasma. To study this effect, a novel EUV diagnostics of plasmas created in the final section of the transmission line (the anode-cathode gap near the main load) of the Z-Machine high-current generator (Sandia National Laboratories, United States) was developed. The work included developing spectroscopic instruments, theoretical and experimental studies of EUV spectra of iron ions in well-diagnosed laser-produced plasmas, and a comparison of these spectra with those of plasmas created in the final anode-cathode gap of the transmission line. The EUV spectra of highly charged Fe ions in the spectral range {lambda} {approx} 20-800 A were investigated. In experiments performed at Sandia National Laboratories, spectra of FeXIII-FeXVII ions were observed. A comparison of the measured and calculated spectra shows that the electron plasma temperature in the anode-cathode gap is T{sub e} {approx} 200 eV.

• OSTI ID: 21399951
• Journal Information: Plasma Physics Reports, Journal Name: Plasma Physics Reports Journal Issue: 11 Vol. 34; ISSN PPHREM; ISSN 1063-780X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANODES
CATHODES
CHARGED PARTICLES
CURRENTS
ELECTRIC CURRENTS
ELECTRODES
ELECTRON TEMPERATURE
ELECTRONIC EQUIPMENT
EQUIPMENT
EXTREME ULTRAVIOLET SPECTRA
FUNCTION GENERATORS
IONS
IRON IONS
LASER-PRODUCED PLASMA
LONGITUDINAL PINCH
PINCH EFFECT
PLASMA
PULSE GENERATORS
SPECTRA
ULTRAVIOLET SPECTRA