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HK: Fachverband Hadronen und Kerne

HK 64: Nuclear Physics Applications

HK 64.1: Gruppenbericht

Mittwoch, 18. März 2009, 16:30–17:00, H-ZO 100

Cubic boron nitride- a new material for ultracold neutron application — •Thorsten Lauer¹, Yury Sobolev², Yury Borisov³, Manfred Daum⁴, Nicolas du Fresne², Leonard Göltl⁸, Gabriele Hampel¹, Werner Heil², Andreas Knecht^4,5, Martin Keunecke⁶, Jens Volker Kratz¹, Thomas Lang², Michael Meister², Christian Plonka Spehr¹, Yuri Pokotylovski⁷, Peter Reichert¹, Ullrich Schmidt⁸, Thomas Krist⁹, Norbert Wiehl¹, and Johannes Zennere² — ¹Institut für Kernchemie, Universität Mainz — ²Institut für Physik, Universität Mainz — ³PNPI Gatchina, Russland — ⁴PSI, Paul Scherrer Institut, Villigen, Schweiz — ⁵Universität Zürich, Schweiz — ⁶Frauenhofer Institut IST, Braunschweig — ⁷JINR, Dubna, Russland — ⁸Physikalisches Institut, Universität Heidelberg — ⁹Hahn Meitner Institut, Berlin

For the first time, the Fermi potential of cubic boron nitride (cBN) was measured at the ultra cold neutron source at the TRIGA reactor, Mainz using the time of flight method (TOF). The investigated samples have a Fermi potential of about 300 neV. Because of its good dielectric characteristics, cubic boron nitride could be used as suitable coating for insulator in storage chambers of future EDM projects. This talk will present recent results and an outlook on further investigations.