Showing papers by "Xihua Wang published in 1990"
01 Jan 1990
TL;DR: The energy distribution of electrons photoemitted from a hot, solid-density plasma created by photoexciting a Ag surface with two collinear, p-polarized, 90 fs pulses was measured via photoelectron time-of-flight spectroscopy as discussed by the authors.
Abstract: The energy distribution of electrons photoemitted from a hot, solid-density plasma created by photoexciting a Ag surface with two collinear, p-polarized, 90 fs pulses was measured via photoelectron time-of-flight spectroscopy. At zero time delay the average photoelectron energy corresponds to several 105 K and drops to half this value when the time delay exceeds 180 fs. Time-resolved reflectivity studies, under similar excitation conditions, indicate electron heating is pulsewidth limited, but recovery caused by electron cooling and surface expansion occurs over several picoseconds.
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