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在HL-2A装置上研制了用于测量等离子体密度分布的两套幅度调制微波反射仪。微波反射仪采用时间延迟法。这两套微波反射仪有不同的频率范围(26.5～40GHz和40～60GHz),它们所对应的密度测量范围是(0.84～1.98)×1019m-3和(1.98～4.47)×1019m-3。时间分辨率可达1ms,空间分辨率约为5mm。
Two sets of amplitude modulation microwave reflectometers for measuring the plasma density distribution were developed on the HL-2A device. Microwave reflectometer using time delay method. The two sets of microwave reflectors have different frequency ranges (26.5-40 GHz and 40-60 GHz) and correspond to density ranges of (0.84-1.98) x 1019m-3 and (1.98-4.47) x 1019m-3. Time resolution of up to 1ms, the spatial resolution of about 5mm.