학술논문

Performance and Mix Measurements of Indirect Drive Cu-Doped Be Implosions.
Document Type
Article
Source
Physical Review Letters. 5/22/2015, Vol. 114 Issue 20, p205002-1-205002-5. 5p.
Subject
*BERYLLIUM
*CARCINOGENS
*NEUTRONS
*BARYONS
*LASER pulses
Language
ISSN
0031-9007
Abstract
The ablator couples energy between the driver and fusion fuel in inertial confinement fusion (ICF). Because of its low opacity, high solid density, and material properties, beryllium has long been considered an ideal ablator for ICF ignition experiments at the National Ignition Facility. We report here the first indirect drive Be implosions driven with shaped laser pulses and diagnosed with fusion yield at the OMEGA laser. The results show good performance with an average DD neutron yield of ~2 x 109 at a convergence ratio of R0/R ~ 10 and little impact due to the growth of hydrodynamic instabilities and mix. In addition, the effect of adding an inner liner of W between the Be and DD is demonstrated. [ABSTRACT FROM AUTHOR]