Nuclear science research with dynamic high energy density plasmas at NIF

9th International Conference on Inertial Fusion Sciences and Applications

Shaughnessy, D.A.^1 ; Gharibyan, N.^1 ; Moody, K.J.^1 ; Despotopulos, J.D.^1 ; Grant, P.M.^1 ; Yeamans, C.B.^1 ; Berzak Hopkins, L.^1 ; Cerjan, C.J.^1 ; Schneider, D.H.G.^1 ; Faye, S.^1,2

Lawrence Livermore National Laboratory, P.O. Box 808, Livermore

CA

94551, United States^1

Department of Nuclear Engineering, University of California, Berkeley

CA

94720, United States^2

关键词: High energy density plasmas;    Indirect-drive;    Measurements of;    National ignition facility;    Science research;    Target chamber center;    Target materials;    Thermo-mechanical;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/717/1/012080/pdf
DOI  :  10.1088/1742-6596/717/1/012080

来源: IOP

【 摘 要 】

Nuclear reaction measurements are performed at the National Ignition Facility in a high energy density plasma environment by adding target materials to the outside of the hohlraum thermo-mechanical package on an indirect-drive exploding pusher shot. Materials are activated with 14.1-MeV neutrons and the post-shot debris is collected via the Solid Radiochemistry diagnostic, which consists of metal discs fielded 50 cm from target chamber center. The discs are removed post-shot and analyzed via radiation counting and mass spectrometry. Results from a shot using Nd and Tm foils as targets are presented, which indicate enhanced collection of the debris in the line of sight of a given collector. The capsule performance was not diminished due to the extra material. This provides a platform for future measurements of nuclear reaction data through the use of experimental packages mounted external to the hohlraum.