Patent ID: 11946871
Assignee: PURDUE RESEARCH FOUNDATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method of performing a measurement of a temperature of a gas, the method comprising:
generating a main nanosecond discharge pulse within a location in a totally gaseous sample of the gas that causes primary breakdown of the gas to form a plasma discharge and excite a first instance of a light emission signal;
generating a probing nanosecond plasma pulse within the location in the totally gaseous sample of the gas at the plasma discharge to initiate additional breakdown of the gas during decay of the plasma discharge after the first instance of the light emission signal disappears, wherein the probing nanosecond plasma pulse creates a lower maximum voltage in the plasma discharge than the main nanosecond discharge pulse, and wherein heating of the plasma discharge by the probing nanosecond plasma pulse is negligible; and
using an optical emission spectroscopy technique to measure the temperature of the totally gaseous sample of the gas by processing a second instance of the light emission signal that is excited by the probing nanosecond plasma pulse.