Helical Shear-Flow Stabilization of an Astrophysically Relevant Laboratory Plasma Jet

Lavine, Eric Sander; You, Setthivoine

doi:10.1103/physrevlett.123.145002

Title: Helical Shear-Flow Stabilization of an Astrophysically Relevant Laboratory Plasma Jet

Journal Article · Fri Oct 04 00:00:00 EDT 2019 · Physical Review Letters

DOI:https://doi.org/10.1103/physrevlett.123.145002· OSTI ID:1802090

^[1]; You, Setthivoine ^[1]

Univ. of Washington, Seattle, WA (United States)

Astrophysical jets are collimated, high-speed outflows observed to be natural features of celestial objects that spin and accrete matter. From protoplanetary nebula and young stellar objects to active galactic nuclei, common features suggest that universal mechanisms may lead to the remarkable straightness observed in many jets. Here we report observations from a new astrophysically relevant laboratory plasma jet experiment demonstrating the formation of long-lived, collimated, high aspect-ratio jets. The magnetized jets have strong helical shear flows and remain stable to instabilities over many growth times. These observations corroborate theoretical predictions that strong helical shear flows can stabilize current-driven instabilities in magnetically confined plasmas, solar prominences, and magnetically driven astrophysical jets in nature.

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Research Organization:: Univ. of Washington, Seattle, WA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: SC0010340

OSTI ID:: 1802090

Journal Information:: Physical Review Letters, Vol. 123, Issue 14; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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