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Angular dependence of secondary electron emission from Cu surfaces induced by electron bombardment

M Commisso1,2, P Barone1, A Bonanno1, R Cimino2, D Grosso1, M Minniti1, A Oliva1, P Riccardi1 and F Xu1

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We report experiments of 200 eV electron bombardment on surface of a real Cu sample used in the Large Hadron Collider (LHC) beam screen. Incidence angle dependent energy distribution curves of emitted electrons were measured and analyzed by separation into three energy regions of conventionally termed elastically reflected, rediffused and true-secondary electrons. Different angular dependences were observed for the three components. These results should have implications in simulation codes of the electron cloud effect in particle accelerators.


PACS

79.20.Hx Electron impact: secondary emission

Subjects

Condensed matter: electrical, magnetic and optical

Dates

Issue 9 (2008)



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