Study of laser produced plasma in a longitudinal magnetic field

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.

doi:10.1063/1.5091702

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

Journal Article · 11 June 2019 · Physics of Plasmas

DOI: https://doi.org/10.1063/1.5091702 · OSTI ID:1565863

Ivanov, V. V. ^[1]; Maximov, A. V. ^[2]; Betti, R. ^[2]; Leal, L. S. ^[2]; Mancini, R. C. ^[1];

^[1]; Golovkin, I. E. ^[3];

^[4];

^[1]; Sefkow, A. B. ^[2]; Wong, N. L. ^[1]

Univ. of Nevada, Reno, NV (United States)
Univ. of Rochester, NY (United States)
Prism Computational Sciences, Madison, WI (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

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.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Univ. of Nevada, Reno, NV (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE Economic Regulatory Administration (RG)

Contributing Organization:: LANL Prism Corp.

Grant/Contract Number:: 89233218CNA000001; SC0016500

OSTI ID:: 1565863

Alternate ID(s):: OSTI ID: 1525562; OSTI ID: 1642473

Report Number(s):: LA-UR-18-31850; TRN: US2000915

Journal Information:: Physics of Plasmas, Vol. 26, Issue 6; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 11 works

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