"The double-differential spectrum of coincidences between backscattered electrons and secondary electrons (SEs) emitted from a polycrystalline Al surface bombarded with 100-eV electrons was measured. For energy losses of the scattered electron in between the work function of Al and the bulk plasmon energy, a sharp peak is observed in the SE spectra, corresponding to ejection of a single electron near the Fermi edge receiving the full energy loss and momentum of the primary electron. This process predominantly takes place when the primary electron suffers a surface energy loss in vacuum, and leads to SE ejection from the very surface. At energy losses just above the bulk plasmon energy, a sharp transition is observed, corresponding to a sudden increase in the depth of ejection. The latter is a direct consequence of the complementarity of surface and bulk plasmons, the so-called Begrenzungs effect."

Werner, W., Salvat Pujol, F., Bellissimo, A., Khalid, R., Smekal, W., Novak, M., et al. (2013). Secondary-electron emission induced by in vacuo surface excitations near a polycrystalline Al surface. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 88(20) [10.1103/PhysRevB.88.201407].

Secondary-electron emission induced by in vacuo surface excitations near a polycrystalline Al surface

RUOCCO, Alessandro;STEFANI, Giovanni
2013-01-01

Abstract

"The double-differential spectrum of coincidences between backscattered electrons and secondary electrons (SEs) emitted from a polycrystalline Al surface bombarded with 100-eV electrons was measured. For energy losses of the scattered electron in between the work function of Al and the bulk plasmon energy, a sharp peak is observed in the SE spectra, corresponding to ejection of a single electron near the Fermi edge receiving the full energy loss and momentum of the primary electron. This process predominantly takes place when the primary electron suffers a surface energy loss in vacuum, and leads to SE ejection from the very surface. At energy losses just above the bulk plasmon energy, a sharp transition is observed, corresponding to a sudden increase in the depth of ejection. The latter is a direct consequence of the complementarity of surface and bulk plasmons, the so-called Begrenzungs effect."
2013
Werner, W., Salvat Pujol, F., Bellissimo, A., Khalid, R., Smekal, W., Novak, M., et al. (2013). Secondary-electron emission induced by in vacuo surface excitations near a polycrystalline Al surface. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 88(20) [10.1103/PhysRevB.88.201407].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/267504
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