摘要
Recently generation of strong magnetic (B) fields has been demonstrated in capacitor coils heated by high power laser pulses [S. Fujioka et al., Sci. Rep. 3, 1170 (2013)]. This paper will present a direct measurement of B field generated with an open-ended coil target driven by a nanosecond laser pulse using ultrafast proton radiography. The radiographs are analyzed with particle-tracing simulations. The B field at the coil center is inferred to be ∼50 T at an irradiance of ∼5 × 1014 W·cm−2. The B field generation is attributed to the background cold electron flow pointing to the laser focal spot, where a target potential is induced due to the escape of energetic electrons.
| 源语言 | 英语 |
|---|---|
| 页(从-至) | 187-191 |
| 页数 | 5 |
| 期刊 | Matter and Radiation at Extremes |
| 卷 | 1 |
| 期 | 4 |
| DOI | |
| 出版状态 | 已出版 - 7月 2016 |
| 已对外发布 | 是 |
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