Beryllium capsule implosions at a case-to-capsule ratio of 3.7 on the National Ignition Facility
Year: 2018
Type: article
Abstract: Beryllium is a candidate ablator material for indirect-drive inertial confinement fusion experiments, motivated by its high mass ablation rate, which is advantageous for implosion coupling efficiency and stabilization of the ablation-front instability growth. We present new data on the shock propagation, in-flight shape, and hot spot self-emission shape from gas-filled capsules that demonstrate the feasibility of predictable, symmetric, controllable beryllium implosions at a case-to-capsule ratio of 3.7. The implosions are round (Legendre mode 2 amplitude ≲5%) at an inner beam power and the energy fraction of 26%–28% of the total, indicating that larger beryllium capsules could be driven symmetrically using the National Ignition Facility.
Source: Physics of Plasmas
DOI: 10.1063/1.5041285
Authors: A. B. Zylstra, S. A. Yi, S. MacLaren, J. Kline, G. Kyrala, J. E. Ralph, J. Bae, S. Batha, D. Callahan, K. Flippo, H. Huang, O. Hurricane, S. F. Khan, N. Kabadi, C. Kong, L. B. Kot, B. Lahmann, E. N. Loomis, L. P. Masse, M. Millot, A. Moore, A. Nikroo, T. S. Perry, N. Rice, J. Salmonson, R. Shah, H. Sio, M. Stadermann, D. J. Strozzi, R. Tipton, H. Xu
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funder: U.S. Department of Energy
Awards: G1310793979, G14554683, G554747218
OpenAlex ID: W2897450876