High efficiency photoemission from Cs-K-Te

D. Bisero; B.M. van Oerle; G.J. Ernst; J.W.J. Verschuur; W.J. Witteman

doi:10.1063/1.118362

High efficiency photoemission from Cs-K-Te

D. Bisero, B.M. van Oerle, G.J. Ernst, J.W.J. Verschuur, W.J. Witteman

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Abstract

Cs-K-Te films have been fabricated under ultrahigh vacuum by vapor deposition of Te, K, and Cs onto a Mo substrate into the preparation chamber of the free electron laser of the University of Twente. Their photoemission properties are reported in this letter. The average quantum efficiency at 259 nm measured on 5 evaporated Cs-K-Te photocathodes is 22.5%, whereas the best quantum efficiency obtained at 259 nm is 23.4%. To our knowledge, this is the highest quantum efficiency at 259 nm reported so far, being about twice that of Cs₂Te photocathodes. The reported results demonstrate that Cs-K-Te photocathodes are very promising for the use in photoinjectors.

Original language	English
Pages (from-to)	1491-1493
Number of pages	3
Journal	Applied physics letters
Volume	70
Issue number	12
DOIs	https://doi.org/10.1063/1.118362
Publication status	Published - 1997

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title = "High efficiency photoemission from Cs-K-Te",

abstract = "Cs-K-Te films have been fabricated under ultrahigh vacuum by vapor deposition of Te, K, and Cs onto a Mo substrate into the preparation chamber of the free electron laser of the University of Twente. Their photoemission properties are reported in this letter. The average quantum efficiency at 259 nm measured on 5 evaporated Cs-K-Te photocathodes is 22.5%, whereas the best quantum efficiency obtained at 259 nm is 23.4%. To our knowledge, this is the highest quantum efficiency at 259 nm reported so far, being about twice that of Cs2Te photocathodes. The reported results demonstrate that Cs-K-Te photocathodes are very promising for the use in photoinjectors.",

author = "D. Bisero and {van Oerle}, B.M. and G.J. Ernst and J.W.J. Verschuur and W.J. Witteman",

year = "1997",

doi = "10.1063/1.118362",

language = "English",

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journal = "Applied physics letters",

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publisher = "American Institute of Physics",

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T1 - High efficiency photoemission from Cs-K-Te

AU - Bisero, D.

AU - van Oerle, B.M.

AU - Ernst, G.J.

AU - Verschuur, J.W.J.

AU - Witteman, W.J.

PY - 1997

Y1 - 1997

N2 - Cs-K-Te films have been fabricated under ultrahigh vacuum by vapor deposition of Te, K, and Cs onto a Mo substrate into the preparation chamber of the free electron laser of the University of Twente. Their photoemission properties are reported in this letter. The average quantum efficiency at 259 nm measured on 5 evaporated Cs-K-Te photocathodes is 22.5%, whereas the best quantum efficiency obtained at 259 nm is 23.4%. To our knowledge, this is the highest quantum efficiency at 259 nm reported so far, being about twice that of Cs2Te photocathodes. The reported results demonstrate that Cs-K-Te photocathodes are very promising for the use in photoinjectors.

AB - Cs-K-Te films have been fabricated under ultrahigh vacuum by vapor deposition of Te, K, and Cs onto a Mo substrate into the preparation chamber of the free electron laser of the University of Twente. Their photoemission properties are reported in this letter. The average quantum efficiency at 259 nm measured on 5 evaporated Cs-K-Te photocathodes is 22.5%, whereas the best quantum efficiency obtained at 259 nm is 23.4%. To our knowledge, this is the highest quantum efficiency at 259 nm reported so far, being about twice that of Cs2Te photocathodes. The reported results demonstrate that Cs-K-Te photocathodes are very promising for the use in photoinjectors.

U2 - 10.1063/1.118362

DO - 10.1063/1.118362

M3 - Article

SN - 0003-6951

VL - 70

SP - 1491

EP - 1493

JO - Applied physics letters

JF - Applied physics letters

IS - 12

ER -

High efficiency photoemission from Cs-K-Te

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