Study of Implosion and Precursor Dynamics and Collapse in Wire Arrays With End-On Laser Diagnostics

Ivanov, Vladimir V.; Papp, Daniel; Anderson, Austin A.

doi:10.1109/TPS.2018.2857463

Title: Study of Implosion and Precursor Dynamics and Collapse in Wire Arrays With End-On Laser Diagnostics

Abstract

Radiative properties and plasma parameters of Z-pinches at stagnation depend on its previous phases including the ablation and implosion stages. Here, the dynamics of implosion in wire arrays including a collapse of the precursor was investigated at the 1-MA Zebra generator by end-on ultraviolet (UV) laser diagnostics at the wavelength of 266 nm. UV laser diagnostics displayed a complicated structure of the precursor with dense edges. Shadowgraphy and interferometry presented a collapse of the precursor to the dense Z-pinch. Depolarization of the laser beam in the Z-pinch plasma was studied with the end-on UV polarimeter. Comparison of images taken in two orthogonal polarizations showed small areas of depolarization in the trailing plasma around the Z-pinch.

Authors:

^[1]; Papp, Daniel ^[2]; Anderson, Austin A. ^[1]

Univ. of Nevada, Reno, NV (United States)
ELI-ALPS, ELI-HU Nkft., Szeged (Hungary)

Publication Date:: Thu Aug 09 00:00:00 EDT 2018

Research Org.:: Univ. of Nevada, Reno, NV (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Fusion Energy Sciences (FES)

OSTI Identifier:: 1642470

Grant/Contract Number:: SC0016500

Resource Type:: Accepted Manuscript

Journal Name:: IEEE Transactions on Plasma Science

Additional Journal Information:: Journal Volume: 46; Journal Issue: 11; Journal ID: ISSN 0093-3813

Publisher:: IEEE

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Laser diagnostics; precursor; wire-array; Z-pinch

Citation Formats


                    Ivanov, Vladimir V., Papp, Daniel, and Anderson, Austin A. Study of Implosion and Precursor Dynamics and Collapse in Wire Arrays With End-On Laser Diagnostics.  United States: N. p., 2018. 
Web.  doi:10.1109/TPS.2018.2857463.

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                    Ivanov, Vladimir V., Papp, Daniel, & Anderson, Austin A. Study of Implosion and Precursor Dynamics and Collapse in Wire Arrays With End-On Laser Diagnostics.  United States.  https://doi.org/10.1109/TPS.2018.2857463

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                    Ivanov, Vladimir V., Papp, Daniel, and Anderson, Austin A. Thu .  
"Study of Implosion and Precursor Dynamics and Collapse in Wire Arrays With End-On Laser Diagnostics".  United States.  https://doi.org/10.1109/TPS.2018.2857463.  https://www.osti.gov/servlets/purl/1642470.

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@article{osti_1642470,

  title        = {Study of Implosion and Precursor Dynamics and Collapse in Wire Arrays With End-On Laser Diagnostics},

  author       = {Ivanov, Vladimir V. and Papp, Daniel and Anderson, Austin A.},

  abstractNote = {Radiative properties and plasma parameters of Z-pinches at stagnation depend on its previous phases including the ablation and implosion stages. Here, the dynamics of implosion in wire arrays including a collapse of the precursor was investigated at the 1-MA Zebra generator by end-on ultraviolet (UV) laser diagnostics at the wavelength of 266 nm. UV laser diagnostics displayed a complicated structure of the precursor with dense edges. Shadowgraphy and interferometry presented a collapse of the precursor to the dense Z-pinch. Depolarization of the laser beam in the Z-pinch plasma was studied with the end-on UV polarimeter. Comparison of images taken in two orthogonal polarizations showed small areas of depolarization in the trailing plasma around the Z-pinch.},

  doi          = {10.1109/TPS.2018.2857463},

  journal      = {IEEE Transactions on Plasma Science},

  number       = 11,

  volume       = 46,

  place        = {United States},

  year         = {Thu Aug 09 00:00:00 EDT 2018},

  month        = {Thu Aug 09 00:00:00 EDT 2018}

}

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Journal Article:

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https://doi.org/10.1109/TPS.2018.2857463

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Figures / Tables:

Fig. 1: An optical schematic of the side-on and end-on laser probing in the vacuum chamber of the Zebra generator. The UV end-on laser beam split in the (S) shadowgraphy channel and (D) the channel for the depolarized laser beam.

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