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Use of proton spectroscopy as a diagnostic of shell in capsule implosion experiments with NIF scale high temperature Hohlraums at Omegaa)
a)Contributed paper, published as part of the Proceedings of the 17th Topical Conference on High-Temperature Plasma Diagnostics, Albuquerque, New Mexico, May 2008.
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10.1063/1.2978198
/content/aip/journal/rsi/79/10/10.1063/1.2978198
http://aip.metastore.ingenta.com/content/aip/journal/rsi/79/10/10.1063/1.2978198
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Calculated neutron and proton yields for capsule shell thicknesses of 25, 35, 45, and .

Image of FIG. 2.
FIG. 2.

Calculated peak proton energy (MeV) for capsule shell thicknesses of 25, 35, 45, and , viewed along or perpendicular to Hohlraum axis.

Image of FIG. 3.
FIG. 3.

Experimental setup showing orientation of the Hohlraum with respect to the MIT wedge range filters used to measure the proton spectra.

Image of FIG. 4.
FIG. 4.

Measured Hohlraum drive temperatures from Dante vs time. Dante measurement error is , which is indicated on the plot. Simulated Dante drive temperatures for full energy shots of 19.6 kJ are also indicated on the plot. Several shots plotted in the figure used reduced laser energy and have lower drive temperatures.

Image of FIG. 5.
FIG. 5.

Measured neutron yields (total number into ) from shots with capsule shell thicknesses of 25, 35, 45, and . Measured neutron yields have an experimental measurement error of (indicated on plot). Calculated neutron yields are also indicated for each of the shell thicknesses.

Image of FIG. 6.
FIG. 6.

Measured proton spectral downshifts (MeV) for capsule shell thicknesses of 25, 35, 45, and . Estimated measurement error in downshift is (indicated on plot). Calculated downshifts are also shown in each case. Calculations are also shown using an opacity multiplier of 2.0.

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/content/aip/journal/rsi/79/10/10.1063/1.2978198
2008-10-31
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Use of d-H3e proton spectroscopy as a diagnostic of shell ρr in capsule implosion experiments with ∼0.2 NIF scale high temperature Hohlraums at Omegaa)
http://aip.metastore.ingenta.com/content/aip/journal/rsi/79/10/10.1063/1.2978198
10.1063/1.2978198
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