Images of the gold bubble feature in NIF Gas-Filled Ignition Hohlraums

9th International Conference on Inertial Fusion Sciences and Applications

Schneider, M.B.^1 ; Maclaren, S.A.^1 ; Widmann, K.^1 ; Meezan, N.B.^1 ; Hammer, J.H.^1 ; Yoxall, B.E.^1 ; Bell, P.M.^1 ; Bradley, D.K.^1 ; Callahan, D.A.^1 ; Edwards, M.J.^1 ; Guymer, T.M.^2 ; Hinkel, D.E.^1 ; Hsing, W.W.^1 ; Kervin, M.L.^1 ; Landen, O.L.^1 ; Moody, J.D.^1 ; Moore, A.S.^1 ; Palmer, N.E.^1 ; Teruya, A.T.^1

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

CA

94550, United States^1

Atomic Weapons Establishment, Aldermaston, Reading

RG7 4PR, United Kingdom^2

关键词: Cross beams;    Hard X ray;    Hohlraums;    Ignition hohlraums;    National ignition facility;    Peak power;    Three-dimensional structure;    Two-dimensional simulations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/717/1/012049/pdf
DOI  :  10.1088/1742-6596/717/1/012049

来源: IOP

【 摘 要 】

The ViewFactor experiments at the National Ignition Facility use a truncated hohlraum to allow excellent diagnostic views of the interior of the hohlraum. Time-integrated, hard x-ray (3-5 keV) images show the region where the laser deposits its energy at peak power. These images show a three-dimensional structure in the region where the outer beams deposit their energy (the "gold bubble") which varies with pulse shape and cross beam energy transfer. The images from two-dimensional simulations have similar trends but show some discrepancies.