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Magnetic field measurements in laser-produced plasmas via proton deflectometry
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View: Figures


Image of FIG. 1.
FIG. 1.

Schematic of the experimental setup. Only the rear-side interaction pulse is shown.

Image of FIG. 2.
FIG. 2.

Temporal profile of the ns interaction pulse as obtained on a streak camera. The relative delays at which the deflectograms shown in this manuscript have been taken are overlaid on the profile, with reference to the figure numbers.

Image of FIG. 3.
FIG. 3.

(a) Typical face-on probing deflectogram in rear interaction configuration using 5.5 MeV protons, magnification . (b) PTRACE simulations for the conditions of (a) assuming the toroidal distribution parametrized as in Eq. (3). [(c) and (d)] Same interaction conditions as (a) and (b) but front interaction, and 7 MeV protons. The parameters of the PTRACE simulations [see Eq. (3)] are , , , , , are . The polarity of is inverted in (d). The timing of the data shown corresponds approximately to the pulse peak.

Image of FIG. 4.
FIG. 4.

(a) Face-on probing deflectograms in rear configuration taken at using 5.5 MeV protons, geometrical magnification . (b) The corresponding PTRACE simulation with parameters , , , , , and . [(c) and (d)] Same as (a) and (b) but at ; the simulation parameters in (d) are , , , , , and .

Image of FIG. 5.
FIG. 5.

(a) Side-on probing deflectogram obtained simultaneously with the face-on image in Figs. 3(a) and 3(b): the corresponding PTRACE simulation.

Image of FIG. 6.
FIG. 6.

MHD simulation with the CHIC code. Parameters are laser intensity , spot radius, and ion charge. Frames (a) and (b) show the magnetic field (in T) at and 100 ps with respect to the pulse peak, respectively.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Magnetic field measurements in laser-produced plasmas via proton deflectometry