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Title: Collision and interpenetration of plasmas created by laser-illuminated disks

Abstract

Supersonic, counterstreaming plasmas were produced by ablating plasma from the inside surfaces of two parallel disks made of aluminum and magnesium, respectively, with a 0.53 {mu}m laser at an intensity of 10{sup 14} W/cm{sup 2} for 1.3 nsec. Diagnostics included holographic interferometry, a time-integrated x-ray pinhole camera and a gated x-ray crystal spectrograph with imaging slits. The plasmas interpenetrate for the first half of the laser pulse but stagnate once the electron density exceeds 5{times}10{sup 20} cm{sup {minus}3}. Spectroscopic measurements suggest a coronal electron temperature of {similar to}800 eV and an ion temperature of {similar to}15 keV in the stagnated plasma. The observations are in good agreement with a two ion fluid model of interpenetrating plasmas in which the dominant slowing down process is ion--ion collisions.

Authors:
; ; ; ;  [1];  [2]
  1. KMS Fusion, Inc., P.O. Box 1567, Ann Arbor, Michigan 48106-1567 (United States)
  2. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
Publication Date:
OSTI Identifier:
7275878
DOE Contract Number:  
AC03-87DP10560
Resource Type:
Journal Article
Journal Name:
Physics of Fluids B; (United States)
Additional Journal Information:
Journal Volume: 4:4; Journal ID: ISSN 0899-8221
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ALUMINIUM; LASER-PRODUCED PLASMA; COLLISIONS; MAGNESIUM; ABLATION; ELECTRON DENSITY; ELECTRON TEMPERATURE; ION TEMPERATURE; ION-ION COLLISIONS; LASER-RADIATION HEATING; MACH NUMBER; PLASMA DENSITY; PLASMA PRODUCTION; SUPERSONIC FLOW; X-RAY SPECTROSCOPY; ALKALINE EARTH METALS; ELEMENTS; FLUID FLOW; HEATING; ION COLLISIONS; METALS; PLASMA; PLASMA HEATING; SPECTROSCOPY; VELOCITY; 700350* - Plasma Production, Heating, Current Drive, & Interactions- (1992-)

Citation Formats

Bosch, R A, Berger, R L, Failor, B H, Delamater, N D, Charatis, G, and Kauffman, R L. Collision and interpenetration of plasmas created by laser-illuminated disks. United States: N. p., 1992. Web. doi:10.1063/1.860114.
Bosch, R A, Berger, R L, Failor, B H, Delamater, N D, Charatis, G, & Kauffman, R L. Collision and interpenetration of plasmas created by laser-illuminated disks. United States. https://doi.org/10.1063/1.860114
Bosch, R A, Berger, R L, Failor, B H, Delamater, N D, Charatis, G, and Kauffman, R L. 1992. "Collision and interpenetration of plasmas created by laser-illuminated disks". United States. https://doi.org/10.1063/1.860114.
@article{osti_7275878,
title = {Collision and interpenetration of plasmas created by laser-illuminated disks},
author = {Bosch, R A and Berger, R L and Failor, B H and Delamater, N D and Charatis, G and Kauffman, R L},
abstractNote = {Supersonic, counterstreaming plasmas were produced by ablating plasma from the inside surfaces of two parallel disks made of aluminum and magnesium, respectively, with a 0.53 {mu}m laser at an intensity of 10{sup 14} W/cm{sup 2} for 1.3 nsec. Diagnostics included holographic interferometry, a time-integrated x-ray pinhole camera and a gated x-ray crystal spectrograph with imaging slits. The plasmas interpenetrate for the first half of the laser pulse but stagnate once the electron density exceeds 5{times}10{sup 20} cm{sup {minus}3}. Spectroscopic measurements suggest a coronal electron temperature of {similar to}800 eV and an ion temperature of {similar to}15 keV in the stagnated plasma. The observations are in good agreement with a two ion fluid model of interpenetrating plasmas in which the dominant slowing down process is ion--ion collisions.},
doi = {10.1063/1.860114},
url = {https://www.osti.gov/biblio/7275878}, journal = {Physics of Fluids B; (United States)},
issn = {0899-8221},
number = ,
volume = 4:4,
place = {United States},
year = {Wed Apr 01 00:00:00 EST 1992},
month = {Wed Apr 01 00:00:00 EST 1992}
}