Galvanic detection of optical absorptions in a gas discharge
Galvanic detection of optical absorptions in a gas discharge
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气体放电中光吸收的原电池检测
DOI：
10.1063/1.88918
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发表时间：
1976
影响因子：
4
通讯作者：
J. Travis
中科院分区：
文献类型：
--
作者：
R. B. Green;R. Keller;G. Luther;P. Schenck;J. Travis
由离散光吸收产生的电信号已被观察到用于各种元素，包括一些以前没有报道过这种效应的元素。在本例中，观察到的效应是通过调谐到放电中某一物质跃迁波长的激光照射产生的气体放电管上电压的变化。该信号可以在没有光学检测设备的情况下用于光谱调查或放电中物质的分析测定。获得了锂、钠、钙、钡、铀、氖和氦在商业空心阴极灯中的跃迁信号，以及在常规放电管中的氖和氦的跃迁信号。
An electrical signal, resulting from discrete optical absorptions, has been observed for a variety of elements, including several for which such an effect had not been previously reported. In the present case, the effect is observed as a change in the voltage across a gas discharge tube produced by irradiation with a laser tuned to the wavelength of a transition of a species in the discharge. This signal may be used—without optical detection apparatus—for spectroscopic investigations or analytical determinations of materials in the discharge. Signals were obtained for transitions of lithium, sodium, calcium, barium, uranium, neon, and helium, in commercial hollow cathode lamps, and neon and helium in conventional discharge tubes.