Biermann-battery driven magnetized collisionless shock precursors in laser produced plasmas
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866916661334900736 |
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| author | Johnson, Timothy Sutcliffe, Graeme Pearcy, Jacob Birkel, Andrew Rigon, Gabriel Kabadi, Neel Lahmann, Brandon Adrian, Patrick Reichelt, Benjamin Kunimune, Justin Dannhoff, Skylar Cufari, Matt Tsung, Frank Chen, Hui Katz, Joseph Tikhonchuk, Vladimir Li, Chikang |
| author_facet | Johnson, Timothy Sutcliffe, Graeme Pearcy, Jacob Birkel, Andrew Rigon, Gabriel Kabadi, Neel Lahmann, Brandon Adrian, Patrick Reichelt, Benjamin Kunimune, Justin Dannhoff, Skylar Cufari, Matt Tsung, Frank Chen, Hui Katz, Joseph Tikhonchuk, Vladimir Li, Chikang |
| contents | This letter reports the first complete observation of magnetized collisionless shock precursors formed through the compression of Biermann-battery magnetic fields in laser produced plasmas. At OMEGA, lasers produce a supersonic CH plasma flow which is magnetized with Biermann-battery magnetic fields. The plasma flow collides with an unmagnetized hydrogen gas jet plasma to create a magnetized shock precursor. The situation where the flowing plasma carries the magnetic field is similar to the Venusian bow shock. Imaging 2$ω$ Thomson scattering confirms that the interaction is collisionless and shows density and temperature jumps. Proton radiographs have regions of strong deflections and FLASH magnetohydrodynamic (MHD) simulations show the presence of Biermann fields in the Thomson scattering region. Electrons are accelerated to energies of up to 100 keV in a power-law spectrum. OSIRIS particle-in-cell (PIC) simulations, initialized with measured parameters, show the formation of a magnetized shock precursor and corroborate the experimental observables. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_03076 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Biermann-battery driven magnetized collisionless shock precursors in laser produced plasmas Johnson, Timothy Sutcliffe, Graeme Pearcy, Jacob Birkel, Andrew Rigon, Gabriel Kabadi, Neel Lahmann, Brandon Adrian, Patrick Reichelt, Benjamin Kunimune, Justin Dannhoff, Skylar Cufari, Matt Tsung, Frank Chen, Hui Katz, Joseph Tikhonchuk, Vladimir Li, Chikang Plasma Physics This letter reports the first complete observation of magnetized collisionless shock precursors formed through the compression of Biermann-battery magnetic fields in laser produced plasmas. At OMEGA, lasers produce a supersonic CH plasma flow which is magnetized with Biermann-battery magnetic fields. The plasma flow collides with an unmagnetized hydrogen gas jet plasma to create a magnetized shock precursor. The situation where the flowing plasma carries the magnetic field is similar to the Venusian bow shock. Imaging 2$ω$ Thomson scattering confirms that the interaction is collisionless and shows density and temperature jumps. Proton radiographs have regions of strong deflections and FLASH magnetohydrodynamic (MHD) simulations show the presence of Biermann fields in the Thomson scattering region. Electrons are accelerated to energies of up to 100 keV in a power-law spectrum. OSIRIS particle-in-cell (PIC) simulations, initialized with measured parameters, show the formation of a magnetized shock precursor and corroborate the experimental observables. |
| title | Biermann-battery driven magnetized collisionless shock precursors in laser produced plasmas |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2409.03076 |