Spectroscopic measurements of electron density and temperature in polyacetal-capillary-discharge plasmas.
Spectroscopic measurements of electron density and temperature in polyacetal-capillary-discharge plasmas.
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聚缩醛毛细管放电等离子体中电子密度和温度的光谱测量。
DOI：
10.1103/physreve.49.2282
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Elton
中科院分区：
文献类型：
--
作者：
Morgan;Griem;Elton
光谱测量了上升时间为80 ns、峰值电流为6-16 kA、脉冲放电直径为0.5 mm和1 mm、长度为1 cm的聚缩醛(CH2O)n毛细管中的电子密度和温度历史。通过对O v I 3p-4d和3D-4f发射的轴向、空间积分、时间门控光谱与理论斯塔克加宽轮廓的拟合，推断了毛细管中的电子密度(≲5×1019 cm−3)和温度(≲50 eV)。利用中空阳极内部发射的CI3p-3d和CIv3s-3p的时间门控离轴(与毛细管轴相距45)光谱，推断毛细管外存在较低密度(N e≲2×1018 cm≲3)的冷却器(T e−2 5 eV)。
Spectroscopic measurements were made of electron density and temperature histories in plasmas formed by 80-ns risetime, 6–16-kA peak current, pulsed discharges in 0.5-and 1-mm diameter, 1-cm-long polyacetal (CH 2 O) n capillaries. Electron densities (≲ 5× 10 19 cm− 3) and temperatures (≲ 50 eV) in the capillary were inferred by fitting axial, spatially integrated, time-gated spectra taken of O v i 3p-4d and 3d-4f emission with theoretical Stark-broadened profiles that were corrected for optical-depth effects. Off-axis (at 45 to the capillary axis) time-gated spectra taken of C i i i 3p-3d and C i v 3s-3p emission from inside the hollow anode were used to infer the presence of a cooler (T e≲ 25 eV), less dense (N e≲ 2× 10 18 cm− 3) plasma just outside the capillary.