Abstract

Polar direct drive (PDD) makes it possible to perform direct-drive-ignition experiments at the National Ignition Facility while the facility is configured for x-ray drive. We present the first PDD ignition-relevant target designs to include the physical effects of crossbeam energy transfer (CBET) and nonlocal heat transport, both of which substantially affect the target drive. In the PDD configuration, a multiwavelength detuning strategy was found to be effective in mitigating the loss of coupling caused by CBET, allowing for implosion speeds comparable to those of previous designs. Two designs are described: a high-adiabat alpha-burning design and a lower-adiabat ignition design.

Details

Title
Design options for polar-direct-drive targets from alpha heating to ignition
Author
Collins, T J B 1 ; Marozas, J A 1 ; Skupsky, S 1 ; Cao, D 1 ; McKenty, P W 1 ; Delettrez, J A 1 ; Moses, G 2 

 Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299 USA 
 University of Wisconsin, Madison, WI 53706-1140 USA 
Publication year
2016
Publication date
May 2016
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2575122177
Copyright
© 2016. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.