In Situ Processing by Gas or Alkali Metal Dosing and by Cleavage

Pianetta, P.

doi:10.1007/0-306-46913-8_6

Specimen Handling, Preparation, and Treatments in Surface Characterization 2002

DOI: 10.1007/0-306-46913-8_6

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In Situ Processing by Gas or Alkali Metal Dosing and by Cleavage

P. Pianetta

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2008

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“…A carefully out-gassed Cs getter chromate source is used for Cs deposition [14]. Gaseous NF 3 is leaked into the chamber through a leak valve.…”

mentioning

confidence: 99%

Photoemission study of Cs–NF3 activated GaAs(100) negative electron affinity photocathodes

Liu

Sun

Peterson

et al. 2008

Applied Physics Letters

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GaAs based negative electron affinity photocathodes activated with Cs and NF3 are used as polarized electron sources for linear accelerators. It is generally believed that the activation layer consists of CsF. The activation layers of Cs–NF3 on GaAs photocathodes are herein investigated using synchrotron radiation photoelectron spectroscopy. F1s, N1s, and other core levels are recorded at photon energies ranging from 70to820eV. Surprisingly, a significant amount of nitrogen is observed in the activation layers. Two distinct species of nitrogen are observed, one of which decreases along with the fluorine signal as the yield of the photocathode decays with time.

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“…A carefully out-gassed Cs getter chromate source is used for Cs deposition [14]. Gaseous NF 3 is leaked into the chamber through a leak valve.…”

mentioning

confidence: 99%

Photoemission study of Cs–NF3 activated GaAs(100) negative electron affinity photocathodes

Liu

Sun

Peterson

et al. 2008

Applied Physics Letters

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show abstract

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In Situ Processing by Gas or Alkali Metal Dosing and by Cleavage

Cited by 1 publication

References 97 publications

Photoemission study of Cs–NF3 activated GaAs(100) negative electron affinity photocathodes

Photoemission study of Cs–NF3 activated GaAs(100) negative electron affinity photocathodes

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