HL－1装置等离子体辐射损失实验研究

本文叙述了在器壁碳化、抽气孔栏、偏压电极、送杂质气体、ＥＣＲＨ加热和弹丸注入等实验条件下用多道辐射热探测器（Ｂｏｌｏｍｅｔｅｒ）阵列测得的ＨＬ－１等离子体辐射损失，并给出了辐射损失的时空分布图。     

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对HL-2A装置限制器位形和偏滤器位形下放电气体分别为氘和氦时的等离子体热辐射测量结果做了初步分析,分析结果表明：在偏滤器室注入惰性气体能够有效的降低到达靶板的热辐射;超声分子束注入时,观测到注入粒子在等离子体中输运过程;氦放电时的辐射比值明显高于氘放电时的比值;真空室器壁的处理能够有效地降低辐射损失,硅化对器壁条件的改善效果明显。     

Modelled V-I Performance of A 3HE Composite Bolometer Detector

The V-I characteristics of a ³He-cooled, composite bolometer detector designed for submillimetre astronomy are modelled. The modelling yields detector parameters that cannot be measured directly. The system NEP predicted from theoretical V-I equations is found to agree with the measured noise values. The calculated dynamic thermal conductance and the electrical responsivity are found to deviate from the standard model at low temperatures.     

Infrared photography in liquid films by thermocapillary convection

A thermal imaging system using a liquid-liquid interface has been studied, which utilizes the extreme temperature sensitivity of surface tension (Marangoni Effect). Theoretical considerations for the design and the operating conditions of the device are given. The experimental results using a detection by polarization interferometer indicate that the limitations on such a device are primarily due to the finite film thickness of the upper solution (on the order of 50–80 m). This system was able to image 1°C with a limiting resolution of ten lines pair per millimeter.     

利用国内生长的有机晶体DAST作为THz源的研究

利用时域光谱技术分别测量了通过光整流法在国内新生长的有机晶体DAST和国际常用的高效能THz晶体ZnTe中产生的THz脉冲的时域光谱,也测量和分析了有机晶体DAST在THz波段的色散和吸收特性,并通过热辐射探测计(4.2 K Si-bolometer)测量了THz脉冲的绝对能量。结果表明,国内新生长的有机晶体DAST的确是一种高效率的THz产生晶体,优化生长条件后将可得到更高的产生效率。     

μm脉冲电源及其在Z-pinch诊断中的应用

 研制了一种输出连续可调的脉冲恒压电源，该电源电压幅度为0~120V，脉宽为3~14μs，触发延迟时间为0~1μs。将其应用于等离子体辐射的软X射线总能量测量系统中，采用脉冲电源和差值法记录信号，通过分析发，实验中测到的电阻变化与电路中其它电阻无关，是X射线辐射导致镍薄膜电阻的变化引起的。测得的镍薄膜电阻的变化为4.47Ω，以此回推计算得Z-pinch等离子体源辐射的软X射线能量为63.3kJ。