Two-photon LIF on the HIT-SI3 experiment: Absolute density and temperature measurements of deuterium neutrals.
Two-photon LIF on the HIT-SI3 experiment: Absolute density and temperature measurements of deuterium neutrals.
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HIT-SI3 实验中的双光子 LIF：氘中性粒子的绝对密度和温度测量。
DOI：
10.1063/1.4955494
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
T. Jarboe
中科院分区：
文献类型：
--
作者：
D. Elliott;D. Sutherland;Umair Siddiqui;E. Scime;C. Everson;K. Morgan;A. Hossack;B. Nelson;T. Jarboe
双光子激光诱导荧光测量螺旋注入环面（HIT-SI 3）设备上进行，以确定本底中性氘人口的密度和温度。在2 ms长的脉冲等离子体中，感应螺旋度注入器被关闭后进行测量。在等离子体的主要阶段测量中性粒子的尝试没有成功，可能是由于中性粒子的密度低于诊断的检测阈值。在余辉中测得了出乎意料的低密度氘原子，比理论预测的1017 m-3低约100倍。测量的中性温度为1 eV的量级。时间和空间分辨中性密度和温度数据。
Two-photon laser-induced fluorescence measurements were performed on the helicity injected torus (HIT-SI3) device to determine the density and temperature of the background neutral deuterium population. Measurements were taken in 2 ms long pulsed plasmas after the inductive helicity injectors were turned off. Attempts to measure neutrals during the main phase of the plasma were unsuccessful, likely due to the density of neutrals being below the detection threshold of the diagnostic. An unexpectedly low density of atomic deuterium was measured in the afterglow; roughly 100 times lower than the theoretical prediction of 1017 m-3. The neutral temperatures measured were on the order of 1 eV. Temporally and spatially resolved neutral density and temperature data are presented.