Study on Technology of Using Semiconductor Diode Volt-Ampere Characteristic to Test Langmuir Probe Performance

A technique of using a semiconductor diode volt-ampere characteristic to test Langmuir probe performance is presented. The Langmuir probe is an important technique for in-suit detecting the space plasma, and its performance test is the key to ensure that its technical indicators can meet the mission requirements. The technique of using a semiconductor diode volt-ampere characteristic demands less of external factors, so it can be carried out in a laboratory environment. The test results can be used as preliminary performance verification before calibration test of ground plasma environment, and it is proved that the method is effective and feasible in a lab environment test.