Interaction of InGa liquid alloy coolant with gold coated optical materials

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A significant reaction is reported between gold surfaces and an indium-gallium eutectic liquid alloy often used to transfer heat away from optical elements in high power synchrotron radiation beamlines. This reaction proceeds at the slightly elevated temperatures (70{degrees}C) typical of conservative bakeouts used to achieve ultrahigh vacuum in the chambers which house these optical elements (mirrors, gratings, and crystals) without damaging their highly precise figure and finish. The nature and extent of this reaction is discussed, based mostly on the experience gained recently during the vacuum commissioning of two mirror chambers for a VUV wiggler-based synchrotron radiation beamline. 2 refs., ... continued below

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Pages: (16 p)

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Hulbert, S.L. January 1, 1991.

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Description

A significant reaction is reported between gold surfaces and an indium-gallium eutectic liquid alloy often used to transfer heat away from optical elements in high power synchrotron radiation beamlines. This reaction proceeds at the slightly elevated temperatures (70{degrees}C) typical of conservative bakeouts used to achieve ultrahigh vacuum in the chambers which house these optical elements (mirrors, gratings, and crystals) without damaging their highly precise figure and finish. The nature and extent of this reaction is discussed, based mostly on the experience gained recently during the vacuum commissioning of two mirror chambers for a VUV wiggler-based synchrotron radiation beamline. 2 refs., 5 figs.

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Pages: (16 p)

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OSTI; NTIS; INIS; GPO Dep.

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  • 4. international conference on synchrotron radiation instrumentation, Manchester (United Kingdom), 15-19 Jul 1991

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  • Other: DE91017480
  • Report No.: BNL-46496
  • Report No.: CONF-910730--9
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 5399297
  • Archival Resource Key: ark:/67531/metadc1070382

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1991

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  • Feb. 4, 2018, 10:51 a.m.

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  • April 23, 2018, 1:12 p.m.

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Hulbert, S.L. Interaction of InGa liquid alloy coolant with gold coated optical materials, article, January 1, 1991; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc1070382/: accessed December 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.