کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5486927 | 1523444 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Replicating the Z iron opacity experiments on the NIF
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
نجوم و فیزیک نجومی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
X-ray opacity is a crucial factor of all radiation-hydrodynamics calculations, yet it is one of the least validated of the material properties in the simulation codes. Recent opacity experiments at the Sandia Z-machine have shown up to factors of two discrepancies between theory and experiment, casting doubt on the validity of the opacity models. Therefore, a new experimental opacity platform is being developed on the National Ignition Facility (NIF) not only to verify the Z-machine experimental results but also to extend the experiments to other temperatures and densities. The first experiments will be directed towards measuring the opacity of iron at a temperature of â¼160 eV and an electron density of â¼7âà1021âcmâ3. Preliminary experiments on NIF have demonstrated the ability to create a sufficiently bright point backlighter using an imploding plastic capsule and also a hohlraum that can heat the opacity sample to the desired conditions. The first of these iron opacity experiments is expected to be performed in 2017.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: High Energy Density Physics - Volume 23, June 2017, Pages 223-227
Journal: High Energy Density Physics - Volume 23, June 2017, Pages 223-227
نویسندگان
T.S. Perry, R.F. Heeter, Y.P. Opachich, P.W. Ross, J.L. Kline, K.A. Flippo, M.E. Sherrill, E.S. Dodd, B.G. DeVolder, T. Cardenas, T.N. Archuleta, R.S. Craxton, R. Zhang, P.W. McKenty, E.M. Garcia, E.J. Huffman, J.A. King, M.F. Ahmed, G.A. Rochau,