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Title: Larger Sized Wire Arrays on 1.5 MA Z-pinch Generator.

Abstract

Abstract not provided.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1241688
Report Number(s):
SAND2014-18145C
537759
DOE Contract Number:
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Proposed for presentation at the International Dense Z-Pinch Conference 2014 held August 4-7, 2014 in Napa, CA.
Country of Publication:
United States
Language:
English

Citation Formats

Jones, Brent Manley, Safronova, A.S., Kantsyrev, V.L., Weller, M, .E., Shlyaptseva, V.V., Shrestha, I.K., Esaulov, A.A., Stafford, A., Chuvatin, A.S., and Coverdale, Christine Anne. Larger Sized Wire Arrays on 1.5 MA Z-pinch Generator.. United States: N. p., 2014. Web.
Jones, Brent Manley, Safronova, A.S., Kantsyrev, V.L., Weller, M, .E., Shlyaptseva, V.V., Shrestha, I.K., Esaulov, A.A., Stafford, A., Chuvatin, A.S., & Coverdale, Christine Anne. Larger Sized Wire Arrays on 1.5 MA Z-pinch Generator.. United States.
Jones, Brent Manley, Safronova, A.S., Kantsyrev, V.L., Weller, M, .E., Shlyaptseva, V.V., Shrestha, I.K., Esaulov, A.A., Stafford, A., Chuvatin, A.S., and Coverdale, Christine Anne. Mon . "Larger Sized Wire Arrays on 1.5 MA Z-pinch Generator.". United States. doi:. https://www.osti.gov/servlets/purl/1241688.
@article{osti_1241688,
title = {Larger Sized Wire Arrays on 1.5 MA Z-pinch Generator.},
author = {Jones, Brent Manley and Safronova, A.S. and Kantsyrev, V.L. and Weller, M, .E. and Shlyaptseva, V.V. and Shrestha, I.K. and Esaulov, A.A. and Stafford, A. and Chuvatin, A.S. and Coverdale, Christine Anne},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Sep 01 00:00:00 EDT 2014},
month = {Mon Sep 01 00:00:00 EDT 2014}
}

Conference:
Other availability
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  • Experiments on the UNR Zebra generator with Load Current Multiplier (LCM) allow for implosions of larger sized wire array loads than at standard current of 1 MA. Advantages of larger sized planar wire array implosions include enhanced energy coupling to plasmas, better diagnostic access to observable plasma regions, and more complex geometries of the wire loads. The experiments with larger sized wire arrays were performed on 1.5 MA Zebra with LCM (the anode-cathode gap was 1 cm, which is half the gap used in the standard mode). In particular, larger sized multi-planar wire arrays had two outer wire planes frommore » mid-atomic-number wires to create a global magnetic field (gmf) and plasma flow between them. A modified central plane with a few Al wires at the edges was put in the middle between outer planes to influence gmf and to create Al plasma flow in the perpendicular direction (to the outer arrays plasma flow). Such modified plane has different number of empty slots: it was increased from 6 up to 10, hence increasing the gap inside the middle plane from 4.9 to 7.7 mm, respectively. Such load configuration allows for more independent study of the flows of L-shell mid-atomic-number plasma (between the outer planes) and K-shell Al plasma (which first fills the gap between the edge wires along the middle plane) and their radiation in space and time. We demonstrate that such configuration produces higher linear radiation yield and electron temperatures as well as advantages of better diagnostics access to observable plasma regions and how the load geometry (size of the gap in the middle plane) influences K-shell Al radiation. In particular, K-shell Al radiation was delayed compared to L-shell mid-atomic-number radiation when the gap in the middle plane was large enough (when the number of empty slots was increased up to ten)« less
  • Abstract not provided.
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  • Abstract not provided.
  • The electromagnetic energy conversion in the Z-pinch process of single planar wire arrays was studied on Qiangguang generator (1.5 MA, 100 ns). Electrical diagnostics were established to monitor the voltage of the cathode-anode gap and the load current for calculating the electromagnetic energy. Lumped-element circuit model of wire arrays was employed to analyze the electromagnetic energy conversion. Inductance as well as resistance of a wire array during the Z-pinch process was also investigated. Experimental data indicate that the electromagnetic energy is mainly converted to magnetic energy and kinetic energy and ohmic heating energy can be neglected before the final stagnation. Themore » kinetic energy can be responsible for the x-ray radiation before the peak power. After the stagnation, the electromagnetic energy coupled by the load continues increasing and the resistance of the load achieves its maximum of 0.6–1.0 Ω in about 10–20 ns.« less