Abstract
Under moderate pulsed laser excitation, silicon is shown to emit electrons in the vacuum at photon energies well below the work function $. Two distinct processes are observed, 1) a two-quantum photoemission at low photon fluxes and high photon energies (> $/2) arid, 2) a thermoemission at high photon fluxes or low photon energies (< §/2). While the first effect yields information about the electronic structure of silicon under irradiation, the second one probes the properties of the carrier plasma. The temperature of this plasma has been evaluated to (1800 + 100) K for (0.04 Jem , 2 ns) irradiances.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
