| Autor: |
J J Santos, M Bailly-Grandvaux, L Giuffrida, P Forestier-Colleoni, S Fujioka, Z Zhang, P Korneev, R Bouillaud, S Dorard, D Batani, M Chevrot, J E Cross, R Crowston, J-L Dubois, J Gazave, G Gregori, E d’Humières, S Hulin, K Ishihara, S Kojima, E Loyez, J-R Marquès, A Morace, P Nicolaï, O Peyrusse, A Poyé, D Raffestin, J Ribolzi, M Roth, G Schaumann, F Serres, V T Tikhonchuk, P Vacar, N Woolsey |
| Jazyk: |
angličtina |
| Rok vydání: |
2015 |
| Předmět: |
|
| Zdroj: |
New Journal of Physics, Vol 17, Iss 8, p 083051 (2015) |
| Druh dokumentu: |
article |
| ISSN: |
1367-2630 |
| DOI: |
10.1088/1367-2630/17/8/083051 |
| Popis: |
Quasi-static magnetic-fields up to 800 T are generated in the interaction of intense laser pulses (500 J, 1 ns, ${10}^{17}\;{\rm{W}}\;{\mathrm{cm}}^{-2}$ ) with capacitor-coil targets of different materials. The reproducible magnetic-field peak and rise-time, consistent with the laser pulse duration, were accurately inferred from measurements with GHz-bandwidth inductor pickup coils (B-dot probes). Results from Faraday rotation of polarized optical laser light and deflectometry of energetic proton beams are consistent with the B-dot probe measurements at the early stages of the target charging, up to $t\approx 0.35$ ns, and then are disturbed by radiation and plasma effects. The field has a dipole-like distribution over a characteristic volume of 1 mm ^3 , which is consistent with theoretical expectations. These results demonstrate a very efficient conversion of the laser energy into magnetic fields, thus establishing a robust laser-driven platform for reproducible, well characterized, generation of quasi-static magnetic fields at the kT-level, as well as for magnetization and accurate probing of high-energy-density samples driven by secondary powerful laser or particle beams. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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