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Fast ignition of a compressed inertial confinement fusion hemispherical capsule by two proton beams
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View: Figures


Image of FIG. 1.
FIG. 1.

Sketch of an indirect-drive conically guided hemispherical capsule. The two proton sources are located outside the hohlraum wall at distances and . The graph is not to scale.

Image of FIG. 2.
FIG. 2.

Density (continuous line) and temperature (dotted line) versus mass coordinate at time of peak . These profiles refer to the same capsule used in Ref. 30.

Image of FIG. 3.
FIG. 3.

Proton power (thick gray line), proton kinetics energy (thin full line), and total energy (dotted line) delivered to the capsule as a function of time.

Image of FIG. 4.
FIG. 4.

Thermonuclear power for three different energies in the proton beam. The total number of protons in the beam varies in order to deliver the energy of 8, 9, and , respectively.

Image of FIG. 5.
FIG. 5.

Pulse power (thick gray lines) of the two proton beams and the time evolution of the thermonuclear fusion power.

Image of FIG. 6.
FIG. 6.

(Color online) 2D maps of density (half-bottom, normalized to ) and temperature (half-top, normalized to ). (a) : energy deposition of the first beam. (b) : hydrodynamic expansion and forward shock. (c) : energy deposition of the second beam. (d) : thermonuclear burn wave propagation.

Image of FIG. 7.
FIG. 7.

Average range (thick gray lines) of the first proton beam and of the second proton beam as a function of time. Energy deposited by the protons into the high-density shell (full line) and energy deposited in the inner low-density plasma (dotted line).

Image of FIG. 8.
FIG. 8.

Power delivered by proton beams (thick gray line) and thermonuclear fusion power. The nine cases refer to proton beams with an energy spread of and to distances limited between 1.0 and .

Image of FIG. 9.
FIG. 9.

Same as in Fig. 8 but in these cases the distribution of the proton energy has a larger spread and the distance varies between 0.8 and .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Fast ignition of a compressed inertial confinement fusion hemispherical capsule by two proton beams