Preliminary considerations of an intense slow positron facility based on a sup 78 Kr loop in the high flux isotopes reactor

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Suggestions have been made to the National Steering Committee for the Advanced Neutron Source (ANS) by Mills that provisions be made to install a high intensity slow positron facility, based on a {sup 78}Kr loop, that would be available to the general community of scientists interested in this field. The flux of thermal neutrons calculated for the ANS is E + 15 sec{sup {minus}1} m{sup {minus}2}, which Mills has estimated will produce 5 mm beam of slow positrons having a current of about 1 E + 12 sec {sup {minus}1}. The intensity of such a beam will be a least ... continued below

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Pages: (5 p)

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Hulett, L.D. Jr.; Donohue, D.L.; Peretz, F.J.; Montgomery, B.H. & Hayter, J.B. January 1, 1990.

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Suggestions have been made to the National Steering Committee for the Advanced Neutron Source (ANS) by Mills that provisions be made to install a high intensity slow positron facility, based on a {sup 78}Kr loop, that would be available to the general community of scientists interested in this field. The flux of thermal neutrons calculated for the ANS is E + 15 sec{sup {minus}1} m{sup {minus}2}, which Mills has estimated will produce 5 mm beam of slow positrons having a current of about 1 E + 12 sec {sup {minus}1}. The intensity of such a beam will be a least 3 orders of magnitude greater than those presently available. The construction of the ANS is not anticipated to be complete until the year 2000. In order to properly plan the design of the ANS, strong considerations are being given to a proof-of-principle experiment, using the presently available High Flux Isotopes Reactor, to test the {sup 78}Kr loop technique. The positron current from the HFIR facility is expected to be about 1 E + 10 sec{sup {minus}1}, which is 2 orders of magnitude greater than any other available. If the experiment succeeds, a very valuable facility will be established, and important formation will be generated on how the ANS should be designed. 3 refs., 1 fig.

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Pages: (5 p)

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OSTI; NTIS; INIS; GPO Dep.

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  • Fall meeting of the Materials Research Society, Boston, MA (USA), 24 Nov - 1 Dec 1990

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  • Other: DE91005013
  • Report No.: CONF-901105-41
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 6433464
  • Archival Resource Key: ark:/67531/metadc1203448

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  • January 1, 1990

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  • July 5, 2018, 11:11 p.m.

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  • Nov. 26, 2018, 12:25 p.m.

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Hulett, L.D. Jr.; Donohue, D.L.; Peretz, F.J.; Montgomery, B.H. & Hayter, J.B. Preliminary considerations of an intense slow positron facility based on a sup 78 Kr loop in the high flux isotopes reactor, article, January 1, 1990; Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc1203448/: accessed May 25, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.