Transmission of ultra-cold neutrons through guides coated with materials of high optical potential

M. Daum, B. Franke, P. Geltenbort, E. Gutsmiedl, S. Ivanov, J. Karch, M. Kasprzak, K. Kirch, A. Kraft, T. Lauer, B. Lauss, A. R. Müller, S. Paul, P. Schmidt-Wellenburg, T. Zechlau, G. Zsigmond

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

We have measured the transmission of ultra-cold neutrons (UCN) through tubes coated on the inside with materials of high optical potentials. The best transmission value, T, normalised to 1 m long UCN guides was obtained with a beryllium coated quartz guide, T=(99.0±1.0)%. Furthermore, excellent transmission coefficients were found for (i) a glass tube coated with NiMo(88/12), T=(97.3 ±0.6)%, (ii) a NiMo(85/15) guide made by the replication technique, T=(97.1 ±0.8)% and (iii) a glass guide coated with NiMo(82/18), T=(96.3 ±2.1)%. The results demonstrate that UCN guides made from coated glass tubes have the same excellent transmission properties as those produced with the replication technique. They are, however, significantly cheaper.

Original languageEnglish
Pages (from-to)71-77
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume741
DOIs
StatePublished - 21 Mar 2014
Externally publishedYes

Keywords

  • Ultra-cold neutron guides
  • Ultra-cold neutron transmission
  • Ultra-cold neutrons

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