Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session BO04: ICF Diagnostics
9:30 AM–12:18 PM,
Monday, October 17, 2022
Room: Ballroom 111 A
Chair: Kevin Meaney, LANL
Abstract: BO04.00014 : First measurement of the 10B(α,n)13N reaction in an ICF implosion at NIF: Initial steps toward the development of a radiochemistry mix diagnostic*
12:06 PM–12:18 PM
Presenter:
Diego Lonardoni
(Los Alamos National Laboratory)
Author:
Diego Lonardoni
(Los Alamos National Laboratory)
We present the first measurement of the 10B(α,n)13N reaction in an ICF implosion, using a polar-direct-drive exploding pusher shot at NIF as a first step in the development of a radiochemistry mix diagnostics. Radiation-hydrodynamics calculations were performed in 1D to optimize the capsule design, and a charged-particle transport post-processor was developed to study α-induced reactions on the ablator material. Results indicate a large 13N production, measurable by RAGS. The target N201115-001 was successfully fielded on the NIF, and nitrogen from the 10B(α,n)13N reaction was indeed measured. The discussion of the experimental results is complicated by the shape asymmetry of the implosion, that requires further investigation beyond the initial 1D modeling. However, results are encouraging and suggest that radiochemistry can provide a practical diagnostic for NIF capsule dynamics.
*This work was supported by the U.S. Department of Energy through the Los Alamos National Laboratory. Los Alamos National Laboratory is operated by Triad National Security, LLC, for the National Nuclear Security Administration of U.S. Department of Energy (Contract No. 89233218CNA000001).
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