An intense, broadband emission spectrum, thyratron-gated nanosecond light source using a commercially available Xe short-arc lamp

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Abstract
We have developed a thyratron-gated, high-intensity nanosecond pulsed lamp using a commercially available Xe short-arc lamp. A dc voltage higher than 10 kV is applied to the electrode gap through a high-value resistor. A spark discharge in the electrode gap is generated by the trigger of the thyratron. Intense light pulses as large as 80 W (peak value) of 14–16 ns duration full width at half-maximum was obtained repetitively from the Xe lamps. This lamp produced broadband emission spectrum (220–600 nm) according to discharge of Xe gas. Because discharge voltage of the pulsed lamp is much higher than that of a conventional dc lamp, a high electron-temperature pulsed plasma is produced, resulting in enhancement of the UV component of the emitted light. The rich UV light from this lamp can be utilized as an excitation light source in time-resolved spectroscopy.

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