Turbulent stagnation in a Z-pinch plasma

Kroupp, E.; Stambulchik, Evgeny; Starobinets, A.; Osin, D.; Fisher, V. I.; Alumot, D.; Maron, Y.; Davidovits, S.; Fisch, N. J.; Fruchtman, A.

doi:10.1103/PhysRevE.97.013202

Turbulent stagnation in a $Z$ -pinch plasma

Journal Article · Mon Jan 15 23:00:00 EST 2018 · Physical Review E

DOI:https://doi.org/10.1103/PhysRevE.97.013202· OSTI ID:1467032

Kroupp, E. ^[1]; Stambulchik, Evgeny ^[2]; Starobinets, A. ^[2]; Osin, D. ^[3]; Fisher, V. I. ^[2]; Alumot, D. ^[4]; Maron, Y. ^[2]; Davidovits, S. ^[5]; Fisch, N. J. ^[5]; Fruchtman, A. ^[6]

Weizmann Institute of Science, Rehovot (Israel); Weizmann Institute - Cornell University
Weizmann Institute of Science, Rehovot (Israel)
Weizmann Institute of Science, Rehovot (Israel); Tri Alpha Energy Inc., Foothill Ranch, CA (United States)
Weizmann Institute of Science, Rehovot (Israel); Applied Materials, Rehovot (Israel)
Princeton Univ., Princeton, NJ (United States)
H.I.T. - Holon Institute of Technology, Holon (Israel)

The ion kinetic energy in a stagnating plasma was previously determined by Kroupp et al. [Phys. Rev. Lett.107, 105001 (2011)] from Doppler-dominated line shapes augmented by measurements of plasma properties and assuming a uniform-plasma model. Notably, the energy was found to be dominantly stored in hydrodynamic flow. Here we advance a new description of this stagnation as supersonically turbulent. Such turbulence implies a nonuniform density distribution. Here, we demonstrate how to reanalyze the spectroscopic data consistent with the turbulent picture and show that this leads to better concordance of the overconstrained spectroscopic measurements, while also substantially lowering the inferred mean density.

View Accepted Manuscript (DOE)

Research Organization:: Cornell Univ., Ithaca, NY (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0003764

OSTI ID:: 1467032

Alternate ID(s):: OSTI ID: 1417064

Journal Information:: Physical Review E, Journal Name: Physical Review E Journal Issue: 1 Vol. 97; ISSN PLEEE8; ISSN 2470-0045

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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