The Mochi LabJet Experiment for Measurements of Canonical Helicity Injection in a Laboratory Astrophysical Jet
| العنوان: | The Mochi LabJet Experiment for Measurements of Canonical Helicity Injection in a Laboratory Astrophysical Jet |
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| المؤلفون: | Manuel Azuara-Rosales, Eric Sander Lavine, Alexander Card, Morgan Quinley, Evan Carroll, Setthivoine You, Jens von der Linden |
| المصدر: | The Astrophysical Journal Supplement Series. 236:29 |
| بيانات النشر: | American Astronomical Society, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Physics, FOS: Physical sciences, Astronomy and Astrophysics, Plasma, Pulsed power, Rotation, 01 natural sciences, Physics - Plasma Physics, Collimated light, 010305 fluids & plasmas, Computational physics, Magnetic field, Plasma Physics (physics.plasm-ph), Astrophysical jet, Physics::Plasma Physics, Space and Planetary Science, Electric field, 0103 physical sciences, 010303 astronomy & astrophysics, Voltage |
| الوصف: | The Mochi device is a new pulsed power plasma experiment designed to produce long, collimated, stable, magnetized plasma jets when set up in the LabJet configuration. The LabJet configuration aims to simulate an astrophysical jet in the laboratory by mimicking an accretion disk threaded by a poloidal magnetic field with concentric planar electrodes in front of a solenoidal coil. The unique setup consists of three electrodes, each with azimuthally symmetric gas slits. Two of the electrodes are biased independently with respect to the third electrode to control the radial electric field profile across the poloidal bias magnetic field. This design approximates a shear azimuthal rotation profile in an accretion disk. The azimuthally symmetric gas slits provide a continuously symmetric mass source at the footpoint of the plasma jet, so any azimuthal rotation of the plasma jet is not hindered by a discrete number of gas holes. The initial set of diagnostics consists of current Rogowski coils, voltage probes, magnetic field probe arrays, an interferometer and ion Doppler spectroscopy, supplemented by a fast ion gauge and a retarding grid energy analyzer. The measured parameters of the first plasmas are 1E22 m-3, 0.4 T, 5-25 eV, with velocities of 20-80 km/s. The combination of a controllable electric field profile, a flared poloidal magnetic field, and azimuthally symmetric mass sources in the experiment successfully produces short-lived (10 {\mu}s, >5 Alfv\'en times) collimated magnetic jets with ~10:1 aspect-ratio and long-lived (100 {\mu}s, >40 Alfv\'en times) flow-stabilized, collimated, magnetic jets with ~30:1 aspect-ratio. Comment: Accepted for publication in The Astrophysical Journal Supplement |
| تدمد: | 1538-4365 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46be4d6a5ef280d1759c079eec4469fe https://doi.org/10.3847/1538-4365/aaba6f |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....46be4d6a5ef280d1759c079eec4469fe |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15384365 |
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