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Title: X-ray Spectroscopy and Imaging of Combined X-pinches with Mo and W wires at Cornell and UNR 1MA Pulsed Power Devices

Abstract

X-pinch experiments using combined Mo and W wires were implemented on the 1MA Cornell University (CU) COBRA and University of Nevada, Reno (UNR) ZEBRA facilities. Spatially-resolved and integrated x-ray spectral data and time integrated and time-gated pinhole x-ray images accumulated in these X-pinch experiments are analyzed. In particular, x-ray L-shell spectra of Mo ions and M-shell spectra of W ions have been studied. A non-LTE collisional-radiative (CR) atomic kinetic model of Mo, successfully applied before to interpret UNR and CU x-ray spectra from Mo X-pinches, was used here to provide plasma parameters from L-shell Mo radiation from the combined (W/Mo) X-pinches. The recently developed non-LTE CR model of W based on FAC atomic structure code data has been applied to identify and diagnose the spectral features of W ions and to provide parameters of the plasma from M-shell W radiation from W/Mo X-pinches. As a result, the radiative properties of W/Mo X-pinches produced on two 1 MA university-scale pulsed power facilities are analyzed and compared.

Authors:
; ; ; ; ;  [1]; ; ; ; ;  [2]
  1. Physics Department/220, University of Nevada, Reno, NV 89557 (United States)
  2. Laboratory of Plasma Studies, Cornell University, Ithaca, NY 46566 (United States)
Publication Date:
OSTI Identifier:
20729235
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 808; Journal Issue: 1; Conference: 6. international conference on dense Z-pinches, Oxford (United Kingdom), 25-28 Jul 2005; Other Information: DOI: 10.1063/1.2159340; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; EXPLODING WIRES; IMAGES; L SHELL; LTE; M SHELL; MOLYBDENUM; MOLYBDENUM IONS; PINCH EFFECT; PLASMA; TUNGSTEN; TUNGSTEN IONS; X RADIATION; X-RAY SPECTRA; X-RAY SPECTROSCOPY

Citation Formats

Safronova, Alla, Kantsyrev, Victor, Fedin, Dmitry, Yilmaz, Fatih, Hoppe, Travis, Nalajala, Vidya, Douglass, John, McBride, Ryan, Mitchell, Marc, Maxson, Lloyd, and Hammer, David. X-ray Spectroscopy and Imaging of Combined X-pinches with Mo and W wires at Cornell and UNR 1MA Pulsed Power Devices. United States: N. p., 2006. Web. doi:10.1063/1.2159340.
Safronova, Alla, Kantsyrev, Victor, Fedin, Dmitry, Yilmaz, Fatih, Hoppe, Travis, Nalajala, Vidya, Douglass, John, McBride, Ryan, Mitchell, Marc, Maxson, Lloyd, & Hammer, David. X-ray Spectroscopy and Imaging of Combined X-pinches with Mo and W wires at Cornell and UNR 1MA Pulsed Power Devices. United States. doi:10.1063/1.2159340.
Safronova, Alla, Kantsyrev, Victor, Fedin, Dmitry, Yilmaz, Fatih, Hoppe, Travis, Nalajala, Vidya, Douglass, John, McBride, Ryan, Mitchell, Marc, Maxson, Lloyd, and Hammer, David. Thu . "X-ray Spectroscopy and Imaging of Combined X-pinches with Mo and W wires at Cornell and UNR 1MA Pulsed Power Devices". United States. doi:10.1063/1.2159340.
@article{osti_20729235,
title = {X-ray Spectroscopy and Imaging of Combined X-pinches with Mo and W wires at Cornell and UNR 1MA Pulsed Power Devices},
author = {Safronova, Alla and Kantsyrev, Victor and Fedin, Dmitry and Yilmaz, Fatih and Hoppe, Travis and Nalajala, Vidya and Douglass, John and McBride, Ryan and Mitchell, Marc and Maxson, Lloyd and Hammer, David},
abstractNote = {X-pinch experiments using combined Mo and W wires were implemented on the 1MA Cornell University (CU) COBRA and University of Nevada, Reno (UNR) ZEBRA facilities. Spatially-resolved and integrated x-ray spectral data and time integrated and time-gated pinhole x-ray images accumulated in these X-pinch experiments are analyzed. In particular, x-ray L-shell spectra of Mo ions and M-shell spectra of W ions have been studied. A non-LTE collisional-radiative (CR) atomic kinetic model of Mo, successfully applied before to interpret UNR and CU x-ray spectra from Mo X-pinches, was used here to provide plasma parameters from L-shell Mo radiation from the combined (W/Mo) X-pinches. The recently developed non-LTE CR model of W based on FAC atomic structure code data has been applied to identify and diagnose the spectral features of W ions and to provide parameters of the plasma from M-shell W radiation from W/Mo X-pinches. As a result, the radiative properties of W/Mo X-pinches produced on two 1 MA university-scale pulsed power facilities are analyzed and compared.},
doi = {10.1063/1.2159340},
journal = {AIP Conference Proceedings},
number = 1,
volume = 808,
place = {United States},
year = {Thu Jan 05 00:00:00 EST 2006},
month = {Thu Jan 05 00:00:00 EST 2006}
}