Fill-tube-induced mass perturbations on x-ray-driven, ignition-scale, inertial-confinement-fusion capsule shells and the implications for ignition experiments.
On the first inertial-confinement-fusion ignition facility, the target capsule will be DT filled through a long, narrow tube inserted into the shell. microg-scale shell perturbations Delta m' arising from multiple, 10-50 microm-diameter, hollow SiO2 tubes on x-ray-driven, ignition-scale, 1-mg capsules have been measured on a subignition device. Simulations compare well with observation, whence it is corroborated that Delta m' arises from early x-ray shadowing by the tube rather than tube mass coupling to the shell, and inferred that 10-20 microm tubes will negligibly affect fusion yield on a full-ignition facility.
Bennett
G R
GR
Sandia National Laboratories, Albuquerque, New Mexico 87185-1193, USA.
Herrmann
M C
MC
Edwards
M J
MJ
Spears
B K
BK
Back
C A
CA
Breden
E W
EW
Christenson
P J
PJ
Cuneo
M E
ME
Dannenburg
K L
KL
Frederick
C
C
Keller
K L
KL
Mulville
T D
TD
Nikroo
A
A
Peterson
K
K
Porter
J L
JL
Russell
C O
CO
Sinars
D B
DB
Smith
I C
IC
Stamm
R M
RM
Vesey
R A
RA