Lorentz Mapping of Magnetic Fields in Hot Dense Plasmas

Journal Article · Fri Aug 21 00:00:00 EDT 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.103.085001· OSTI ID:21364625

Petrasso, R D; Li, C K; Seguin, F H; Rygg, J R; Frenje, J A; Betti, R; Knauer, J P; Meyerhofer, D D; Amendt, P A; Froula, D H; Landen, O L; Patel, P K; Ross, J S; Town, R P. J. ^[1]

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1. Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

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.

• OSTI ID: 21364625
• Journal Information: Physical Review Letters, Vol. 103, Issue 8; Other Information: DOI: 10.1103/PhysRevLett.103.085001; (c) 2009 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTRIC FIELDS
ELECTROMAGNETIC FIELDS
FOILS
MAGNETIC FIELDS
MAPPING
MEV RANGE 10-100
PLASMA
PROTON RADIOGRAPHY
ENERGY RANGE
INDUSTRIAL RADIOGRAPHY
MATERIALS TESTING
MEV RANGE
NONDESTRUCTIVE TESTING
TESTING