Gigagauss magnetic field generation by bladed microtube implosion
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866917114485407744 |
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| author | Pan, D. Murakami, M. |
| author_facet | Pan, D. Murakami, M. |
| contents | We demonstrate the generation of ultrahigh magnetic fields in the order of gigagauss using a bladed microtube target whose inner surface is periodically slanted in a sawtooth-like pattern. When irradiated by ultra-intense, ultrashort laser pulses, hot electrons with MeV energies are produced at the outer surface and swiftly transported to the inner surface, initiating a rapid implosion of plasma toward the central axis. The unique blade-induced asymmetry gives rise to vortex-shaped flows of ions and electrons near the center, forming strong azimuthal loop currents that generate ultrahigh magnetic fields at the center. Two-dimensional particle-in-cell simulations, supported by a simple analytical model, elucidate the underlying physics and reveal key scaling laws governing the field strength and spatial confinement. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_00795 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Gigagauss magnetic field generation by bladed microtube implosion Pan, D. Murakami, M. Plasma Physics We demonstrate the generation of ultrahigh magnetic fields in the order of gigagauss using a bladed microtube target whose inner surface is periodically slanted in a sawtooth-like pattern. When irradiated by ultra-intense, ultrashort laser pulses, hot electrons with MeV energies are produced at the outer surface and swiftly transported to the inner surface, initiating a rapid implosion of plasma toward the central axis. The unique blade-induced asymmetry gives rise to vortex-shaped flows of ions and electrons near the center, forming strong azimuthal loop currents that generate ultrahigh magnetic fields at the center. Two-dimensional particle-in-cell simulations, supported by a simple analytical model, elucidate the underlying physics and reveal key scaling laws governing the field strength and spatial confinement. |
| title | Gigagauss magnetic field generation by bladed microtube implosion |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2512.00795 |