High resolution absorption spectroscopy of exploding wire plasmas using an x-pinch x-ray source and spherically bent crystal

Knapp, P. F.; Pikuz, S. A.; Shelkovenko, T. A.; Hammer, D. A.; Hansen, S. B.
June 2011
Review of Scientific Instruments;Jun2011, Vol. 82 Issue 6, p063501
Academic Journal
We present here the use of absorption spectroscopy of the continuum radiation from x-pinch-produced point x-ray sources as a diagnostic to investigate the properties of aluminum plasmas created by pulsed power machines. This technique is being developed to determine the charge state, temperature, and density as a function of time and space under conditions that are inaccessible to x-ray emission spectroscopic diagnostics. The apparatus and its characterization are described, and the spectrometer dispersion, magnification, and resolution are calculated and compared with experimental results. Spectral resolution of about 5000 and spatial resolution of about 20 μm are demonstrated. This spectral resolution is the highest available to date in an absorption experiment. The beneficial properties of the x-pinch x-ray source as the backlighter for this diagnostic are the small source size (<5 μm), smooth continuum radiation, and short pulse duration (<0.1 ns). Results from a closely spaced (1 mm) exploding wire pair are shown and the general features are discussed.


Related Articles

  • X-ray absorption spectroscopy of aluminum z-pinch plasma with tungsten backlighter planar wire array source. Osborne, G. C.; Kantsyrev, V. L.; Safronova, A. S.; Esaulov, A. A.; Weller, M. E.; Shrestha, I.; Shlyaptseva, V. V.; Ouart, N. D. // Review of Scientific Instruments;Oct2012, Vol. 83 Issue 10, p10E103 

    Absorption features from K-shell aluminum z-pinch plasmas have recently been studied on Zebra, the 1.7 MA pulse power generator at the Nevada Terawatt Facility. In particular, tungsten plasma has been used as a semi-backlighter source in the generation of aluminum K-shell absorption spectra by...

  • High-resolution x-ray spectroscopy for plasma diagnostics (abstract). Burkhalter, P. G. // Review of Scientific Instruments;May85, Vol. 56 Issue 5, p846 

    Techniques have been developed to acquire improved x-ray spectra from intense, hot laboratory plasmas. Spatially resolved high-resolution x-ray spectra is a valuable diagnostic for characterizing plasma sources. By mimimizing the plasma source size and with the utilization of selected x-ray...

  • Rolf Mewe: a career devoted to X-ray spectroscopy. Kaastra, Jelle S.; Mewe, Rolf // AIP Conference Proceedings;2005, Vol. 774 Issue 1, p1 

    An overview of the life and work of Rolf Mewe (1935–2004) as an X-ray spectroscopist is given. He was one of the pioneers in the field of X-ray spectroscopy. His work illustrates nicely how this field developed from the early days up to the present high-resolution era. His plasma emission...

  • Spatially resolved high-resolution x-ray spectroscopy of high-current plasma-focus discharges. Polish_hook, S.; Rzadkiewicz, J.; Rosmej, O.; Scholz, M.; Yongtao, Zhao; Gójska, A.; Paduch, M.; Zielinska, E. // Review of Scientific Instruments;Oct2010, Vol. 81 Issue 10, p10E312 

    Soft x-ray emission from a Mather-type plasma-focus device (PF-1000) operated at ∼400 kJ was measured. The high density and temperature plasma were generated by the discharge in the deuterium-argon gas mixture in the modified (high-current) plasma-focus configuration. A spherically bent...

  • Inverse bremsstrahlung of hot, weakly coupled plasmas. Wierling, A.; Millat, Th.; Ro¨pke, G.; Redmer, R.; Reinholz, H. // Physics of Plasmas;Aug2001, Vol. 8 Issue 8 

    The free–free absorption coefficient for radiation in hot, weakly coupled plasmas is determined from a systematic approach to the dynamical conductivity. Based on a generalized linear-response theory, it is expressed in terms of determinants of equilibrium correlation functions permitting...

  • Enhanced power absorption in planar microwave discharges. Yasaka, Y.; Hojo, H. // Physics of Plasmas;May2000, Vol. 7 Issue 5, p1601 

    The wave propagation and absorption in planar microwave discharges without magnetic fields are calculated with nonuniformity in plasma density taken into account. When the wave is incident in the direction oblique to the density gradient, the field amplitude is strongly peaked at a position...

  • X-ray Spectroscopy of Hot Dense Plasmas: Experimental Limits, Line Shifts & Field Effects. Renner, Oldrich; Sauvan, Patrick; Dalimier, Elisabeth; Riconda, Caterina; Rosmej, Frank B.; Weber, Stefan; Nicolai, Philippe; Peyrusse, Olivier; Uschmann, Ingo; Höfer, Sebastian; Kämpfer, Tino; Lötzsch, Robert; Zastrau, Ulf; Förster, Eckhart; Oks, Eugene // AIP Conference Proceedings;10/22/2008, Vol. 1058 Issue 1, p341 

    High-resolution x-ray spectroscopy is capable of providing complex information on environmental conditions in hot dense plasmas. Benefiting from application of modern spectroscopic methods, we report experiments aiming at identification of different phenomena occurring in laser-produced plasma....

  • Diagnosis of a Two Wire X-Pinch by X-Ray Absorption Spectroscopy Utilizing a Doubly Curved Ellipsoidal Crystal. Cahill, A. D.; Hoyt, C. L.; Shelkovenko, T. A.; Pikuz, S. A.; Hammer, D. A. // AIP Conference Proceedings;2014, Vol. 1639 Issue 1, p134 

    X-ray absorption spectroscopy is a powerful tool for the diagnosis of plasmas over a wide range of both temperature and density. However, such a measurement is often limited to probing plasmas with temperatures well below that of the x-ray source in order to avoid object plasma emission lines...

  • High resolution x-ray absorption spectroscopy using a laser plasma radiation source. Vogt, Ulrich; Wilhein, Thomas; Stiel, Holger; Legall, Herbert // Review of Scientific Instruments;Nov2004, Vol. 75 Issue 11, p4606 

    In this article we present a setup of a spectrometer for near edge x-ray absorption spectroscopy at the carbon K-edge (284 eV). The spectrometer works with a laser produced plasma as x-ray source and a single x-ray optical element in grazing incidence configuration called off-axis reflection...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics