Observation and diagnostic application of Kr K-shell emission in magnetized liner inertial fusion experiments at Z

In a series of Magnetized Liner Inertial Fusion (MagLIF) experiments performed at the Z pulsed power accelerator of Sandia National Laboratories, beryllium liners filled with deuterium gas pressures in the 4–8 atm range and a tracer amount of krypton were imploded. At the collapse of the cylindrical...

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Veröffentlicht in:Review of scientific instruments 2022-10, Vol.93 (10), p.103532-103532
Hauptverfasser: Clapp, J. T., Mancini, R. C., Harding, E. C., Schaeuble, M. A., Harvey-Thompson, A. J.
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container_end_page 103532
container_issue 10
container_start_page 103532
container_title Review of scientific instruments
container_volume 93
creator Clapp, J. T.
Mancini, R. C.
Harding, E. C.
Schaeuble, M. A.
Harvey-Thompson, A. J.
description In a series of Magnetized Liner Inertial Fusion (MagLIF) experiments performed at the Z pulsed power accelerator of Sandia National Laboratories, beryllium liners filled with deuterium gas pressures in the 4–8 atm range and a tracer amount of krypton were imploded. At the collapse of the cylindrical implosion, temperatures in the 1–3 keV range and atom number densities of ∼1023 cm−3 were expected. The plasma was magnetized with a 10 T axial magnetic field. Krypton was added to the fuel for diagnosing implosion plasma conditions. Krypton K-shell line emission was recorded with the CRITR time-integrated transmission crystal x-ray spectrometer. The observation shows n = 2 to n = 1 line emissions in B-, Be-, Li-, and He-like Kr ions and is characteristic of the highest electron temperatures achieved in the thermonuclear plasma. Detailed modeling of the krypton atomic kinetics and radiation physics permits us to interpret the composite spectral feature, and it demonstrates that the spectrum is temperature sensitive. We discuss temperatures extracted from the krypton data analysis for experiments performed with several filling pressures.
doi_str_mv 10.1063/5.0101860
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source AIP Journals Complete; Alma/SFX Local Collection
subjects Beryllium
Data analysis
Deuterium
Emission
Experiments
Inertial fusion (reactor)
Krypton
Linings
X ray spectrometers
title Observation and diagnostic application of Kr K-shell emission in magnetized liner inertial fusion experiments at Z
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