冲击压缩铍中密度和温度的X射线汤姆逊散射测量
X-ray Thomson-scattering measurements of density and temperature in shock-compressed beryllium.
作者信息
Lee H J, Neumayer P, Castor J, Döppner T, Falcone R W, Fortmann C, Hammel B A, Kritcher A L, Landen O L, Lee R W, Meyerhofer D D, Munro D H, Redmer R, Regan S P, Weber S, Glenzer S H
机构信息
University of California, Berkeley, California 94720, USA.
出版信息
Phys Rev Lett. 2009 Mar 20;102(11):115001. doi: 10.1103/PhysRevLett.102.115001. Epub 2009 Mar 16.
We present the first x-ray scattering measurements of the state of compression and heating in laser irradiated solid beryllium. The scattered spectra at two different angles show Compton and plasmon features indicating a dense Fermi-degenerate plasma state with a Fermi energy above 30 eV and with temperatures in the range of 10-15 eV. These measurements indicate compression by a factor of 3 in agreement with Hugoniot data and detailed radiation-hydrodynamic modeling.
我们展示了对激光辐照固态铍的压缩和加热状态的首次X射线散射测量结果。两个不同角度的散射光谱显示出康普顿和等离子体激元特征，表明存在一种致密的费米简并等离子体状态，其费米能量高于30电子伏特，温度在10 - 15电子伏特范围内。这些测量结果表明压缩因子为3，这与雨贡纽数据以及详细的辐射流体动力学模型一致。
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