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For the determination of electron temperature in plasma,this paper presents a method tomeasure the deionized period by optical attenuation during afterglow.The apparatus was a tube filled to 1mmHg helium with a probe for comparison.The results agreed with the values measured by the probe.Due tousing plasma radiation,one need not worry that the discharge space would be disturbed and the probe wouldbe contaminated by depositing discharge products,So it is a simple and convenient method.
For the determination of electron temperature in plasma, this paper presents a method to measure the deionized period by optical attenuation during afterglow. The apparatus was a tube filled to 1 mmHg helium with a probe for comparison. The results agreed with the values measured by the probe. Due tousing plasma radiation, one need not worry that the discharge space would be disturbed the probe would be contaminated by depositing discharge products, So it is a simple and convenient method.