Demonstration of High Performance in Layered Deuterium-Tritium Capsule Implosions in Uranium Hohlraums at the National Ignition Facility.
We report on the first layered deuterium-tritium (DT) capsule implosions indirectly driven by a "high-foot" laser pulse that were fielded in depleted uranium hohlraums at the National Ignition Facility. Recently, high-foot implosions have demonstrated improved resistance to ablation-front Rayleigh-Taylor instability induced mixing of ablator material into the DT hot spot [Hurricane et al., Nature (London) 506, 343 (2014)]. Uranium hohlraums provide a higher albedo and thus an increased drive equivalent to an additional 25 TW laser power at the peak of the drive compared to standard gold hohlraums leading to higher implosion velocity. Additionally, we observe an improved hot-spot shape closer to round which indicates enhanced drive from the waist. In contrast to findings in the National Ignition Campaign, now all of our highest performing experiments have been done in uranium hohlraums and achieved total yields approaching 10^{16} neutrons where more than 50% of the yield was due to additional heating of alpha particles stopping in the DT fuel.
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
T
T
Döppner
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
D A
DA
Callahan
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
O A
OA
Hurricane
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
D E
DE
Hinkel
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
T
T
Ma
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
H-S
HS
Park
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
L F
LF
Berzak Hopkins
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
D T
DT
Casey
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
P
P
Celliers
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
E L
EL
Dewald
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
T R
TR
Dittrich
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
S W
SW
Haan
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
A L
AL
Kritcher
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
A
A
MacPhee
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
S
S
Le Pape
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
A
A
Pak
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
P K
PK
Patel
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
P T
PT
Springer
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
J D
JD
Salmonson
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
R
R
Tommasini
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
L R
LR
Benedetti
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
E
E
Bond
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
D K
DK
Bradley
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
J
J
Caggiano
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
J
J
Church
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
S
S
Dixit
Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.
D
D
Edgell
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
M J
MJ
Edwards
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
D N
DN
Fittinghoff
Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA.
J
J
Frenje
Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA.
M
M
Gatu Johnson
Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545, USA.
G
G
Grim
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
R
R
Hatarik
General Atomics, San Diego, California 92121, USA.
M
M
Havre
Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545, USA.
H
H
Herrmann
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
N
N
Izumi
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
S F
SF
Khan
Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545, USA.
J L
JL
Kline
Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.
J
J
Knauer
Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545, USA.
G A
GA
Kyrala
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
O L
OL
Landen
Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545, USA.
F E
FE
Merrill
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
J
J
Moody
Atomic Weapons Establishment, Aldermaston RG7, United Kingdom.
A S
AS
Moore
General Atomics, San Diego, California 92121, USA.
A
A
Nikroo
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
J E
JE
Ralph
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
B A
BA
Remington
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
H F
HF
Robey
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
D
D
Sayre
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
M
M
Schneider
General Atomics, San Diego, California 92121, USA.
H
H
Streckert
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
R
R
Town
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
D
D
Turnbull
Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545, USA.
P L
PL
Volegov
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
A
A
Wan
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
K
K
Widmann
Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545, USA.
C H
CH
Wilde
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
C
C
Yeamans