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Title: Study of laser produced plasma in a longitudinal magnetic field

Abstract

In this work, laser produced plasma embedded in a longitudinal magnetic field was studied using a 1 MA pulsed power generator coupled with a 50 TW laser. Half turn coil loads with an internal diameter of 2.5–3.5 mm generate a 50–70 T axial magnetic field near the load. A subpicosecond laser pulse with an intensity of 10 18–10 19 W/cm 2 irradiates a thin Si foil target in the magnetic field of the coil load. A laser produced plasma plume collimates within the longitudinal field to a narrow jet 0.2–0.3 mm in diameter with a length of 3–4 mm and an electron plasma density of (0.2–1) × 10 20 cm ₋3 on the jet axis. The jet propagates with a velocity of 160–200 km/s in general agreement with magnetohydrodynamic simulations. X-ray spectral measurements demonstrate an increase in the plasma electron density resulting from the magnetic confinement of the jet.

Authors:
 [1];  [2];  [2];  [2];  [1]; ORCiD logo [1];  [3]; ORCiD logo [4]; ORCiD logo [1];  [2];  [1]
  1. Univ. of Nevada, Reno, NV (United States)
  2. Univ. of Rochester, NY (United States)
  3. Prism Computational Sciences, Madison, WI (United States)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
OSTI Identifier:
1565863
Alternate Identifier(s):
OSTI ID: 1525562
Report Number(s):
LA-UR-18-31850
Journal ID: ISSN 1070-664X
Grant/Contract Number:  
89233218CNA000001; SC0016500
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 26; Journal Issue: 6; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Ivanov, V. V., Maximov, A. V., Betti, R., Leal, L. S., Mancini, R. C., Swanson, K. J., Golovkin, I. E., Fontes, Christopher John, Sawada, H., Sefkow, A. B., and Wong, N. L. Study of laser produced plasma in a longitudinal magnetic field. United States: N. p., 2019. Web. doi:10.1063/1.5091702.
Ivanov, V. V., Maximov, A. V., Betti, R., Leal, L. S., Mancini, R. C., Swanson, K. J., Golovkin, I. E., Fontes, Christopher John, Sawada, H., Sefkow, A. B., & Wong, N. L. Study of laser produced plasma in a longitudinal magnetic field. United States. doi:10.1063/1.5091702.
Ivanov, V. V., Maximov, A. V., Betti, R., Leal, L. S., Mancini, R. C., Swanson, K. J., Golovkin, I. E., Fontes, Christopher John, Sawada, H., Sefkow, A. B., and Wong, N. L. Tue . "Study of laser produced plasma in a longitudinal magnetic field". United States. doi:10.1063/1.5091702.
@article{osti_1565863,
title = {Study of laser produced plasma in a longitudinal magnetic field},
author = {Ivanov, V. V. and Maximov, A. V. and Betti, R. and Leal, L. S. and Mancini, R. C. and Swanson, K. J. and Golovkin, I. E. and Fontes, Christopher John and Sawada, H. and Sefkow, A. B. and Wong, N. L.},
abstractNote = {In this work, laser produced plasma embedded in a longitudinal magnetic field was studied using a 1 MA pulsed power generator coupled with a 50 TW laser. Half turn coil loads with an internal diameter of 2.5–3.5 mm generate a 50–70 T axial magnetic field near the load. A subpicosecond laser pulse with an intensity of 1018–1019 W/cm2 irradiates a thin Si foil target in the magnetic field of the coil load. A laser produced plasma plume collimates within the longitudinal field to a narrow jet 0.2–0.3 mm in diameter with a length of 3–4 mm and an electron plasma density of (0.2–1) × 1020 cm₋3 on the jet axis. The jet propagates with a velocity of 160–200 km/s in general agreement with magnetohydrodynamic simulations. X-ray spectral measurements demonstrate an increase in the plasma electron density resulting from the magnetic confinement of the jet.},
doi = {10.1063/1.5091702},
journal = {Physics of Plasmas},
number = 6,
volume = 26,
place = {United States},
year = {2019},
month = {6}
}

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