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Hot-Spot Mix in Ignition-Scale Inertial Confinement Fusion Targets
Author(s) -
S. P. Regan,
R. Epstein,
B. A. Hammel,
L J Suter,
H. A. Scott,
M. A. Barrios,
D. K. Bradley,
D. A. Callahan,
C. Cerjan,
G. W. Collins,
S. N. Dixit,
T. Döppner,
M. J. Edwards,
D. R. Farley,
K. B. Fournier,
S. Glenn,
S. H. Glenzer,
I. Golovkin,
S. W. Haan,
A. V. Hamza,
D. G. Hicks,
N. Izumi,
O. S. Jones,
J. D. Kilkenny,
J. L. Kline,
G. A. Kyrala,
O. L. Landen,
T. Ma,
J. J. MacFarlane,
A. J. Mackin,
Roberto Mancini,
R. L. McCrory,
N. B. Meezan,
D. D. Meyerhofer,
A. Nikroo,
H. -S. Park,
J. E. Ralph,
B. A. Remington,
T. C. Sangster,
V. A. Smalyuk,
P. T. Springer,
R. P. J. Town
Publication year - 2013
Publication title -
physical review letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.688
H-Index - 673
eISSN - 1079-7114
pISSN - 0031-9007
DOI - 10.1103/physrevlett.111.045001
Subject(s) - national ignition facility , inertial confinement fusion , hot spot (computer programming) , ignition system , dopant , materials science , thermalisation , nuclear physics , atomic physics , optics , physics , laser , doping , optoelectronics , thermodynamics , computer science , operating system
Mixing of plastic ablator material, doped with Cu and Ge dopants, deep into the hot spot of ignition-scale inertial confinement fusion implosions by hydrodynamic instabilities is diagnosed with x-ray spectroscopy on the National Ignition Facility. The amount of hot-spot mix mass is determined from the absolute brightness of the emergent Cu and Ge K-shell emission. The Cu and Ge dopants placed at different radial locations in the plastic ablator show the ablation-front hydrodynamic instability is primarily responsible for hot-spot mix. Low neutron yields and hot-spot mix mass between 34(−13,+50)  ng and 4000(−2970,+17 160)  ng are observed

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