- Conference date: 27-31 May 2002
- Location: Aspen, Colorado (USA)
A simple streaked slit diagnostic was developed to record resonance line emission from the plasmas used to produce Ne‐like nickel and Ni‐like silver X‐ray lasing. A Kentech streak camera with a 500 μm wide horizontal timing slit viewing the plasma transversely with a space resolving slit of width 270 μm positioned normal to the timing slit to give spatial resolution along the line focus length. An estimate of the duration of X‐ray laser gain is obtained by temporally resolving resonance line emission from states near in energy to the upper lasing level. The emission duration was measured to be 33 – 40 ps for Ni and 19 – 22 ps for Ag. We may expect the duration of this emission to be an upper bound on the gain duration. The travelling wave velocity at the leading edge of the main pulse was measured to be close to the speed of light.
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