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Title: Studies and optimization of hybrid X-pinches

Journal Article · · Plasma Research Express

Studies were carried out on the hybrid X-pinch (HXP) configuration for several wire materials using a 40ns risetime, 300-kA pulsed-power generator with the goal of optimizing the HXP X-ray burst parameters for different applications. The gap distance between the conical electrodes of the hybrid X-pinch was varied from 0.5 to 5 mm for Al, Ag, Ti, and Mo using different wire diameters to maintain a consistent mass per unit length from one material to the next. It was found that 0.5 - 1 mm gap spacing was optimal to obtain a single X-ray burst, while the number of X-ray bursts increased with gap spacing for all materials at a rate of 1-2/mm. Time consistency studies of the first X-ray burst were carried out for Ti wire by changing the gap distance and wire diameter while observing the time of occurrence of the X-ray bursts. It was found that a 40μm Ti wire load with a 3mm electrode gap spacing had the highest probability to have the first X-ray burst reproducibly within a 2 ns time window. Time-resolved and time-integrated diagnostics provided information about the source size, time of occurrence, intensity, and the number of the X-ray bursts.

Research Organization:
Cornell Univ., Ithaca, NY (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
SC0018088; NA0003764
OSTI ID:
1775066
Alternate ID(s):
OSTI ID: 1775067
Journal Information:
Plasma Research Express, Vol. 3, Issue 1; ISSN 2516-1067
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

References (12)

Time-resolved spectroscopy of Al, Ti, and Mo X pinch radiation using an X-ray streak camera journal April 2003
Dynamics of hybrid X-pinches journal January 2015
X-pinch. Part II journal June 2015
Analysis of L -shell line spectra with 50 ps time resolution from Mo X -pinch plasmas journal August 2004
The Hybrid X-Pinch as a Source of XUV Radiation journal November 2018
Hybrid X-pinch with conical electrodes journal November 2010
Bright spots in 1 MA X pinches as a function of wire number and material journal September 2008
Microexplosion of a hot point in an X-pinch constriction journal October 2000
Determination of the size of a radiation source by the method of calculation of diffraction patterns journal July 2013
Characterization of laser-cut copper foil X-pinches journal October 2016
A review of projection radiography of plasma and biological objects in X-Pinch radiation journal March 2016
A Touchable Pulsed Air Plasma Plume Driven by DC Power Supply journal December 2010

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