Observation of an energetic neutral flux from a laser-produced plasma
Observation of an energetic neutral flux from a laser-produced plasma
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观察激光产生的等离子体的高能中性通量
DOI：
10.1016/0030-4018(83)90298-5
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发表时间：
1983
影响因子：
2.4
通讯作者：
J. Seely
中科院分区：
文献类型：
--
作者：
R. H. Dixon;R. Elton;J. Seely
从激光产生的碳等离子体在氦气氛中的线发射的时间和空间分辨光谱表明存在一个以前未检测到的高能（4千电子伏）中性成分之前的正常高度剥离离子膨胀。类似的硼数据支持了将板坯目标区域确定为起源。绝对发射测量表明，在中性膨胀中，对于40 A/cm 2的等效电流密度，密度为3 X 1013 cm-3。这些中性粒子在氦气中的膨胀是不衰减的，允许在等离子体冲击波之前进行识别。
Time- and space-resolved spectroscopy of line emission from a laser-produced carbon plasma in a helium atmosphere indicates the presence of a previously undetected energetic (4 keV) neutral component preceding the normal highly-stripped ion expansion. Identification of the slab target region as the origin is supported by similar boron data. Absolute emission measurements indicate a density of 3 X 1013cm-3in the neutral expansion, for an equivalent current density of 40 A/cm2. Expansion of these neutrals in the helium gas is unattenuated, permitting identification ahead of the plasma blast wave.