Abstract
Results are presented from experimental studies of the temporal and integral characteristics of radiation in the 12.2-to 15.8-nm spectral range from the anode region of an extended high-current (I ∼ 30 kA) pulsed discharge in Sn vapor. It is found that the radiation pulse consists of intense spikes with a duration much shorter than the half-period of the discharge current. The spikes are shown to correlate with the onset of instability in the plasma column. It is supposed that the radiation spikes in the given wavelength range can be generated by a long-lived dense plasma core optimally supplied with energy. A method for achieving a highly efficient quasi-steady radiation regime is proposed.
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