Jones O S, Glenzer S H, Suter L J, Turner R E, Campbell K M, Dewald E L, Hammel B A, Hammer J H, Kauffman R L, Landen O L, Rosen M D, Wallace R J, Weber F A
Lawrence Livermore National Laboratory, California 94551, USA.
Phys Rev Lett. 2004 Aug 6;93(6):065002. doi: 10.1103/PhysRevLett.93.065002. Epub 2004 Aug 5.
We present measurements of the absolute albedos of hohlraums made from gold or from high-Z mixtures. The measurements are performed over the range of radiation temperatures (70-100 eV) expected during the foot of an indirect-drive temporally shaped ignition laser pulse, where accurate knowledge of the wall albedo (i.e., soft x-ray wall reemission) is most critical for determining capsule radiation symmetry. We find that the gold albedo agrees well with calculations using the supertransition array opacity model, potentially providing additional margin for inertial confinement fusion ignition.
我们展示了由金或高Z混合物制成的黑体腔绝对反照率的测量结果。这些测量是在间接驱动时间整形点火激光脉冲前沿预期的辐射温度范围（70 - 100电子伏特）内进行的，在此范围内，准确了解壁反照率（即软X射线壁再发射）对于确定胶囊辐射对称性最为关键。我们发现，金的反照率与使用超跃迁阵列不透明度模型的计算结果吻合良好，这可能为惯性约束聚变点火提供额外的余量。
