Title of article
Transmission of ultra-cold neutrons through guides coated with materials of high optical potential
Author/Authors
Daum، نويسنده , , M. and Franke، نويسنده , , B. and Geltenbort، نويسنده , , P. and Gutsmiedl، نويسنده , , E. and Ivanov، نويسنده , , S. B. Karch، نويسنده , , Mark J. and Kasprzak، نويسنده , , M. and Kirch، نويسنده , , K. and Kraft، نويسنده , , A. and Lauer، نويسنده , , T. and Lauss، نويسنده , , B. and Müller، نويسنده , , A.R. and Paul، نويسنده , , S. and Schmidt-Wellenburg، نويسنده , , P. and Zechlau، نويسنده , , T. and Zsigmond، نويسنده , , G.، نويسنده ,
Pages
7
From page
71
To page
77
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.
Keywords
Ultra-cold neutrons , Ultra-cold neutron guides , Ultra-cold neutron transmission
Journal title
Astroparticle Physics
Record number
2011715
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