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Solid Oxygen as Converter for the Production of Ultra-cold Neutrons by Frei, A.; Böhle, F.; Bozhanova, R.; Gutsmiedl, E.; Huber, T.; Klenke, J.; Paul, S.; Wlokka, S. is a scholarly article available to read on EtoBox.

What is Solid Oxygen as Converter for the Production of Ultra-cold Neutrons about?

We have investigated solid oxygen as a converter material for the production of ultra-cold neutrons. In a first series of experiments the crystal preparation was examined. An optically semi-transparent solid $\alpha$-oxygen crystal has been prepared. In a second series of experiments such a crystal prepared indentically as in the first series of experiments has been exposed to the cold neutron flux of the MEPHISTO beam line of the FRM II. Ultra-cold neutrons produced inside the oxygen crystal have been extracted and the count rates have been measured at different converter temperatures. The results of these measurements give a clear signal of the superthermal UCN production mechanism in $\alpha$-oxygen. The mean free loss length of UCN inside the crystal at a temperature of 5\,K was determined to be in the order of $20\,\mathrm{cm}$.

Author

Frei, A.; Böhle, F.; Bozhanova, R.; Gutsmiedl, E.; Huber, T.; Klenke, J.; Paul, S.; Wlokka, S.

Published

2010

Language

EN