A method to measure electric field strengths in an argon glow discharge plasma using laser spectroscopy
A method to measure electric field strengths in an argon glow discharge plasma using laser spectroscopy
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使用激光光谱测量氩辉光放电等离子体中电场强度的方法
DOI：
10.1109/27.736060
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发表时间：
1998
影响因子：
1.5
通讯作者：
V. Helbig
中科院分区：
文献类型：
--
作者：
J. B. Kim;K. Kawamura;Y. W. Choi;M. Bowden;K. Muraoka;V. Helbig
发展了一种基于氩原子激光光谱的电场测量方法，并对该方法进行了标定。使用激光光电流光谱和激光诱导荧光光谱进行测量。在氩气中进行了几种不同跃迁的测量，发现4s/spl rnc/7 f和4s/spl rnc/8 f跃迁最适合于辉光放电鞘层区的测量。电场测量的下限估计为500 V/cm。检测光电流信号需要约100毫微焦耳的最小压力，检测荧光信号需要约1毫微焦耳。这些检测限使该方法适用于测量的鞘层电场的放电条件范围很广。
A method for electric field measurement based on laser spectroscopy of argon atoms has been developed and calibrated. Measurements were made using both laser optogalvanic spectroscopy and laser-induced fluorescence spectroscopy. Measurements using several different transitions in argon were carried out, and it was found that the 4s/spl rarr/7f and 4s/spl rarr/8f transitions were the most suitable for measurements in the sheath region of glow discharges. The lower limit for electric field measurements was estimated to be 500 V/cm. A minimal pressure of about 100 mtorr was required to detect optogalvanic signals and about 1 torr was required for the fluorescence signals to be detectable. These detection limits make this method applicable for measurement of sheath electric fields for a wide range of discharge conditions.