Large magnetic fields generated during laser-matter interaction at irradiances of similar to 5 X 10(14) W cm(-2) have been measured using a deflectometry technique employing MeV laser-accelerated protons. Azimuthal magnetic fields were identified unambiguously via a characteristic proton deflection pattern and found to have an amplitude of similar to 45 T in the outer coronal region. Comparison with magnetohydrodynamic simulations confirms that in this regime the (del) over right arrowT(e) X (del) over right arrown(e) source is the main field generation mechanism, while additional terms are negligible. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3097899]
Magnetic field measurements in laser-produced plasmas via proton deflectometry / C. A., C., M., B., J., F., G., S., S., K., A., M., L., R., P. A., W., Antici, P., R., J., J., O., C. A., P., O., W., Schiavi, A., M., N., D., N.. - In: PHYSICS OF PLASMAS. - ISSN 1070-664X. - STAMPA. - 16:4(2009), p. 043102. [10.1063/1.3097899]
Magnetic field measurements in laser-produced plasmas via proton deflectometry
ANTICI, PATRIZIO;SCHIAVI, ANGELO;
2009
Abstract
Large magnetic fields generated during laser-matter interaction at irradiances of similar to 5 X 10(14) W cm(-2) have been measured using a deflectometry technique employing MeV laser-accelerated protons. Azimuthal magnetic fields were identified unambiguously via a characteristic proton deflection pattern and found to have an amplitude of similar to 45 T in the outer coronal region. Comparison with magnetohydrodynamic simulations confirms that in this regime the (del) over right arrowT(e) X (del) over right arrown(e) source is the main field generation mechanism, while additional terms are negligible. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3097899]I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
