High‐resolution time‐ and two‐dimensional space‐resolved x‐ray imaging of plasmas at NOVA
High‐resolution time‐ and two‐dimensional space‐resolved x‐ray imaging of plasmas at NOVA
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NOVA 等离子体的高分辨率时间和二维空间分辨 X 射线成像
DOI：
10.1063/1.1143496
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发表时间：
1992
影响因子：
1.6
通讯作者：
O. Landen
中科院分区：
文献类型：
--
作者：
O. Landen
条纹多针孔相机技术，最先由P.Choi和同事[C.Deeney和P.Choi，Rev.Sci]使用。Instrum。60,3558(1989)；P.Choi和R.Aliaga，同上。61,2747(1990)]记录等离子体箍缩的时间和二维空间分辨软X射线图像，已经在NOVA的激光等离子体上实施。该仪器特别适用于小源(<；150μm大小)的时间分辨成像，例如内爆，其必要的对准精度从单个针孔的≤10μm放宽到9针孔柱的200μm。结果显示，在20μm，30-ps分辨率下，NOVA的2.5keV成像，补充了NOVA现有的1-3keV扫描X射线显微镜能力。
A streaked multiple pinhole camera technique, first used by P. Choi and co‐workers [C. Deeney and P. Choi, Rev. Sci. Instrum. 60, 3558 (1989); P. Choi and R. Aliaga, ibid. 61, 2747 (1990)] to record time‐ and two‐dimensional space‐resolved soft x‐ray images of plasma pinches, has been implemented on laser plasmas at NOVA. The instrument is particularly useful for time‐resolved imaging of small sources (<150 μm in size) such as implosions for which the necessary alignment accuracy is relaxed from ≤10 μm for a single pinhole, to 200 μm for a nine‐pinhole column. Results at 20 μm, 30‐ps resolution are presented for ≳2.5‐keV imaging, complementing the existing 1–3‐keV streaked x‐ray microscope capabilities at NOVA.