Measurements of an ablator-gas atomic mix in indirectly driven implosions at the National Ignition Facility.
We present the first results from an experimental campaign to measure the atomic ablator-gas mix in the deceleration phase of gas-filled capsule implosions on the National Ignition Facility. Plastic capsules containing CD layers were filled with tritium gas; as the reactants are initially separated, DT fusion yield provides a direct measure of the atomic mix of ablator into the hot spot gas. Capsules were imploded with x rays generated in hohlraums with peak radiation temperatures of ∼294  eV. While the TT fusion reaction probes conditions in the central part (core) of the implosion hot spot, the DT reaction probes a mixed region on the outer part of the hot spot near the ablator-hot-spot interface. Experimental data were used to develop and validate the atomic-mix model used in two-dimensional simulations.
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
V A
VA
Smalyuk
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
R E
RE
Tipton
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
J E
JE
Pino
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
D T
DT
Casey
Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
G P
GP
Grim
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
B A
BA
Remington
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
D P
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Rowley
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
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SV
Weber
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
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M
Barrios
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
L R
LR
Benedetti
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
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Bleuel
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
D K
DK
Bradley
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
J A
JA
Caggiano
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
D A
DA
Callahan
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
C J
CJ
Cerjan
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
D S
DS
Clark
Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.
D H
DH
Edgell
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
M J
MJ
Edwards
Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
J A
JA
Frenje
Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
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Gatu-Johnson
Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.
V Y
VY
Glebov
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
S
S
Glenn
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
S W
SW
Haan
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
A
A
Hamza
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
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R
Hatarik
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
W W
WW
Hsing
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
N
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Izumi
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
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S
Khan
General Atomics, San Diego, California 92121, USA.
J D
JD
Kilkenny
Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
J
J
Kline
Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.
J
J
Knauer
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
O L
OL
Landen
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
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Ma
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
J M
JM
McNaney
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
M
M
Mintz
AWE Aldermaston, Reading, Berkshire, RG7 4PR, United Kingdom.
A
A
Moore
General Atomics, San Diego, California 92121, USA.
A
A
Nikroo
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
A
A
Pak
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
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Parham
Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
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Petrasso
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
D B
DB
Sayre
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
M B
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Schneider
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
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Tommasini
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
R P
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Town
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
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Widmann
Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
D C
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Wilson
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
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Yeamans