Scattering of Ions at a Rippled Shock
In a collisionless shock the energy of the directed flow is converted to heating and acceleration of charged particles, and to magnetic compression. In low-Mach number shocks the downstream ion distribution is made of directly transmitted ions. In higher-Mach number shocks ion reflection is importan...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/acd63c |
| _version_ | 1827829644260278272 |
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| author | Michael Gedalin Nikolai V. Pogorelov Vadim Roytershteyn |
| author_facet | Michael Gedalin Nikolai V. Pogorelov Vadim Roytershteyn |
| author_sort | Michael Gedalin |
| collection | DOAJ |
| description | In a collisionless shock the energy of the directed flow is converted to heating and acceleration of charged particles, and to magnetic compression. In low-Mach number shocks the downstream ion distribution is made of directly transmitted ions. In higher-Mach number shocks ion reflection is important. With the increase of the Mach number, rippling develops, which is expected to affect ion dynamics. Using ion tracing in a model shock front, downstream distributions of ions are analyzed and compared for a planar stationary shock with an overshoot and a similar shock with ripples propagating along the shock front. It is shown that rippling results in the distributions, which are substantially broader and more diffuse in the phase space. Gyrotropization is sped up. Rippling is able to generate backstreaming ions, which are absent in the planar stationary case. |
| first_indexed | 2024-03-12T04:08:12Z |
| format | Article |
| id | doaj.art-bc04081899e6412082c195865c7741a3 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-12T04:08:12Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-bc04081899e6412082c195865c7741a32023-09-03T11:11:49ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-0195116510.3847/1538-4357/acd63cScattering of Ions at a Rippled ShockMichael Gedalin0https://orcid.org/0000-0003-1236-4787Nikolai V. Pogorelov1https://orcid.org/0000-0002-6409-2392Vadim Roytershteyn2https://orcid.org/0000-0003-1745-7587Department of Physics, Ben Gurion University of the Negev , Beer-Sheva, Israel ; gedalin@bgu.ac.ilDepartment of Space Science, The University of Alabama in Huntsville , AL 35805, USA; Center for Space Plasma and Aeronomic Research, The University of Alabama in Huntsville , AL 35805, USASpace Science Institute , Boulder, CO 80301, USAIn a collisionless shock the energy of the directed flow is converted to heating and acceleration of charged particles, and to magnetic compression. In low-Mach number shocks the downstream ion distribution is made of directly transmitted ions. In higher-Mach number shocks ion reflection is important. With the increase of the Mach number, rippling develops, which is expected to affect ion dynamics. Using ion tracing in a model shock front, downstream distributions of ions are analyzed and compared for a planar stationary shock with an overshoot and a similar shock with ripples propagating along the shock front. It is shown that rippling results in the distributions, which are substantially broader and more diffuse in the phase space. Gyrotropization is sped up. Rippling is able to generate backstreaming ions, which are absent in the planar stationary case.https://doi.org/10.3847/1538-4357/acd63cShocks |
| spellingShingle | Michael Gedalin Nikolai V. Pogorelov Vadim Roytershteyn Scattering of Ions at a Rippled Shock The Astrophysical Journal Shocks |
| title | Scattering of Ions at a Rippled Shock |
| title_full | Scattering of Ions at a Rippled Shock |
| title_fullStr | Scattering of Ions at a Rippled Shock |
| title_full_unstemmed | Scattering of Ions at a Rippled Shock |
| title_short | Scattering of Ions at a Rippled Shock |
| title_sort | scattering of ions at a rippled shock |
| topic | Shocks |
| url | https://doi.org/10.3847/1538-4357/acd63c |
| work_keys_str_mv | AT michaelgedalin scatteringofionsatarippledshock AT nikolaivpogorelov scatteringofionsatarippledshock AT vadimroytershteyn scatteringofionsatarippledshock |