NDLI: Variations in the Mass Ablation of Tungsten Wire Arrays with Different Initial Wire Sizes

Content Provider	IEEE Xplore Digital Library
Author	Sinars, D.B. Cuneo, M.E. Yu, E.P. Waisman, E.M. Wenger, D.F. Bliss, D.E. Porter, J.L. Lebedev, S.V.
Copyright Year	2005
Description	Author affiliation: Sandia Nat. Labs., Albuquerque, NM (Sinars, D.B.; Cuneo, M.E.; Yu, E.P.; Waisman, E.M.; Wenger, D.F.; Bliss, D.E.; Porter, J.L.)
Abstract	Summary form only given. The radiation source for Z-pinch-driven hohlraum, inertial confinement fusion (ICF) tests on the 20 MA Z facility is a single (or nested) 20-mm diameter tungsten wire array. To ensure that the scaling of these loads to higher currents are well understood, we have been investigating the behavior of these tungsten arrays. During our experiments, the wire array diameter (20 mm), height (10 mm), wire number (300), and pulsed power hardware were kept constant, but the initial wire diameters of the array was varied. Radiography and shadowgraphy measurements show that each array retains core/corona structure until 55-60% of its total implosion time. Using the same techniques as in [D.B. Sinars et al., Phys. Rev. Lett. 93, 145002 (2004)], radiographs of arrays using 5.0, 7.4, and 11.5 mum wires were obtained at the same point in the current pulse, at two different current values chosen so that these arrays were still in the core/corona phase. The radiographs were used to infer the mass distribution of the ablated plasma prefill. A momentum balance ("rocket") model fits the mass profile of the 11.5 mum array assuming a constant ablation velocity of about 13-15 cm/mus, similar to what was inferred for this array in [M.E. Cuneo et al., Phys. Rev. E]. For the lighter two arrays significantly less mass is ablated, and the mass ablation profile appears inconsistent with the rocket model, even if higher velocities are assumed. A variation of the ablation rate with wire size is not explicitly predicted by the rocket model, though variations of the ablation velocity have been inferred for different wire/gap ratios in 1-MA experiments. The data and comparisons to the model and 2D-rthetas ALEGRA simulations will be presented
Sponsorship	Plasma Sci. Appl. Comm. IEEE Nucl. Plasma Sci. Soc.
Starting Page	190
Ending Page	190
File Size	1121432
Page Count	1
File Format	PDF
ISBN	0780393007
ISSN	07309244
DOI	10.1109/PLASMA.2005.359212
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wire Tungsten Phased arrays Radiography Rockets Corona Inertial confinement Testing Hardware Time measurement
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Tungsten wire-array dynamics and power variations from 20 mm arrays on the Sandia Z facility

Quantitative Measurements of Wire Ablation in Tungsten $X$-pinches at 80 kA

Empirical Determination of Radiation Energetics of Inertial Confinement Fusion Relevant Wire-Array Z-Pinches

Mass Density Profile Evolution from Wires in X-Pinch and Wire Array Configurations

Optimal X-Ray Pulse Compression with Compact Nested Wire Arrays On Z

Two dimensional and three dimensional MHD simulations of wire array Z-pinch experiments

Optimization of array radius, mass and wire number for tungsten arrays

Conical Wire Array Z-Pinches as a Tool to Explore the Physics of Wire Array Z-Pinches and for Radiation Pulse-Shaping

Ablation Studies of Low-Number Wire Arrays at 200 kA Using A Linear Transformer Driver

Variations in the Mass Ablation of Tungsten Wire Arrays with Different Initial Wire Sizes

Similar Documents

Tungsten wire-array dynamics and power variations from 20 mm arrays on the Sandia Z facility

Quantitative Measurements of Wire Ablation in Tungsten $X$-pinches at 80 kA

Empirical Determination of Radiation Energetics of Inertial Confinement Fusion Relevant Wire-Array Z-Pinches

Mass Density Profile Evolution from Wires in X-Pinch and Wire Array Configurations

Optimal X-Ray Pulse Compression with Compact Nested Wire Arrays On Z

Two dimensional and three dimensional MHD simulations of wire array Z-pinch experiments

Optimization of array radius, mass and wire number for tungsten arrays

Conical Wire Array Z-Pinches as a Tool to Explore the Physics of Wire Array Z-Pinches and for Radiation Pulse-Shaping

Ablation Studies of Low-Number Wire Arrays at 200 kA Using A Linear Transformer Driver

Variations in the Mass Ablation of Tungsten Wire Arrays with Different Initial Wire Sizes