Dark current measurements at field gradients above 1 GV/m

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In this paper, the authors report the results of dark current studies on copper cathodes and stainless steel anodes held at a field gradient > 1 GV/m. The field emission current is , 1 A for fields less than 1 GV/m. As the field is increased, the dark current increases rapidly to 150 A for applied fields of {approximately} 1.7 GV/m. Fowler-Nordheim plots in this range of applied fields indicate a field enhancement factor of 10--20 for a copper cathode with a work function of 4.6 eV.

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6 p.

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Srinivasan-Rao, T.; Smedley, J.; Schill, J.; Batchelor, K. & Farrell, J. P. July 1998.

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Description

In this paper, the authors report the results of dark current studies on copper cathodes and stainless steel anodes held at a field gradient > 1 GV/m. The field emission current is , 1 A for fields less than 1 GV/m. As the field is increased, the dark current increases rapidly to 150 A for applied fields of {approximately} 1.7 GV/m. Fowler-Nordheim plots in this range of applied fields indicate a field enhancement factor of 10--20 for a copper cathode with a work function of 4.6 eV.

Physical Description

6 p.

Notes

INIS; OSTI as DE99000602

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  • 8. workshop on advanced accelerator concepts, Baltimore, MD (United States), 6-11 Jul 1998

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  • Other: DE99000602
  • Report No.: BNL--65746
  • Report No.: CONF-980742--
  • Grant Number: AC02-98CH10886;FG02-97ER82336
  • DOI: 10.2172/677134 | External Link
  • Office of Scientific & Technical Information Report Number: 677134
  • Archival Resource Key: ark:/67531/metadc706372

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  • July 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • Nov. 10, 2015, 12:47 p.m.

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Srinivasan-Rao, T.; Smedley, J.; Schill, J.; Batchelor, K. & Farrell, J. P. Dark current measurements at field gradients above 1 GV/m, report, July 1998; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc706372/: accessed October 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.