A nanosecond light pulser suitable for spectroscopic studies and its emission characteristics are described.The discharge lamps mounted in the pulser generate sharp light pulses of the duration of 5 to 8 nanosecond, and can be fired as accurate as 0.1 nanosecond in syn-chronism with external trigger pulses.The unique discharge lamps having straight wire electrodes crossed each other with accurate gap separations are developed.
Pulsed emission characteristics of hydrogen or deuterium filled lamps under various operating parameters such as gas pressure, electrode gap distance, supply voltage and discharge capacitance, are measured with a time-resolved spectrometer using the stroboscopic principle.With the deuterium lamps, the clear continum from 2000 to 5000Å are obtained during the entire discharge period.
To demonstrate the performance of the pulser as the exitation source, a result of transient measurement of fluorescence radiation from 10
-3 mol deoxygenate solution of chrysene in cyclohexane is presented.
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