October 25, 2023 Dataset Open Access

Habibi, Mahdi; Arefiev, Alexey; Toncian, Toma

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    <subfield code="a">Arefiev, Alexey</subfield>
    <subfield code="u">Department of Mechanical and Aerospace Engineering, University of California San Diego, La Jolla, CA 92093, USA</subfield>
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    <subfield code="a">High Field Suppression of Bremsstrahlung Emission in High-Intensity Laser-Plasma Interactions</subfield>
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    <subfield code="a">&lt;p&gt;The interaction of high-intensity lasers with plasma is predicted to produce extreme quasi-static magnetic fields with magnitudes approach- ing Megatesla levels. In relativistically transparent plasmas, these fields can enhance direct laser acceleration and allow efficient gamma-ray emission by accelerated electrons. However, due to the so-called magnetic suppression effect, the magnetic field can also affect radiating elec- tron trajectories and, thus, reduce the emission probability of the bremsstrahlung. This is the first study to examine the bremsstrahlung sup- pression mechanism in the context of high-intensity laser&amp;ndash;plasma interactions. Our paper describes a new module that integrates the suppression effect into the standard bremsstrahlung module of the EPOCH particle-in-cell code by considering the impact of magnetic fields and extending the analysis to electric fields. We also investigate this suppressing mechanism&amp;rsquo;s effect on the emitting electron&amp;rsquo;s dynamics. Our findings show that this mechanism not only suppresses low-energy emissions but also has an impact on the dynamics of the radiating electrons.&lt;/p&gt;</subfield>
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