Lorentz Mapping of Magnetic Fields in Hot Dense Plasmas
Author(s)Amendt, P. A.; Ross, J. S.; Seguin, Fredrick Hampton; Town, R. P. J.; Bettie, R.; Li, Chikang; Knauer, J. P.; Frenje, Johan A.; Rygg, J. R.; Meyerhofer, D. D.; Patel, P. K.; Landen, O. L.; Froula, O.; Petrasso, Richard D.; ... Show more Show less
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Unique detection of electromagnetic fields and identification of field type and strength as a function of position were used to determine the nature of self-generated fields in a novel experiment with laser-generated plasma bubbles on two sides of a plastic foil. Field-induced deflections of monoenergetic 15-MeV probe protons passing through the two bubbles, measured quantitatively with proton radiography, were combined with Lorentz mapping to provide separate measurements of magnetic and electric fields. The result was absolute identification and measurement of a toroidal magnetic field around each bubble and determination that any electric field component parallel to the foil was below measurement uncertainties.
DepartmentMassachusetts Institute of Technology. Plasma Science and Fusion Center
Physical Review Letters
American Physical Society
Petrasso, R. D. et al. “Lorentz Mapping of Magnetic Fields in Hot Dense Plasmas.” Physical Review Letters 103.8 (2009): 085001. (C) 2010 The American Physical Society.
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