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Dresden 2013 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 49: Instrumentation

HK 49.9: Talk

Tuesday, March 5, 2013, 18:45–19:00, WIL-C207

UF6 as a Detector Gas for Fission Studies* — •Christian Eckardt1, Joachim Enders1, Martin Freudenberger1, Alf Göök2, Peter von Neumann-Cosel1, Andreas Oberstedt3,4, and Stephan Oberstedt21Institut für Kernphysik, Technische Universität Darmstadt — 2Institute for Reference Materials and Measurements,JRC, European Commission, 2440 Geel, Belgium — 3Akademin för naturvetenskap och teknik, Örebro Universitet, 70182 Örebro, Sweden — 4Fundamental Fysik, Chalmers Tekniska Högskola, 41296 Göteborg, Sweden

A Frisch-grid ionization chamber has been built to test a mixture of argon with gaseous UF6 and to study its properties as a counting gas. We present first results using increasing mass fractions of 238UF6 mixed into argon. The drift velocity of the electrons increases with the content of 238UF6, while a good signal quality and energy resolution of the ionization chamber is preserved.

Using uranium hexafluoride in the detector gas may give access to experiments where extremely high luminosity is required in combination with good angular and energy and/or mass resolution. Examples comprise the investigation of spontaneous fission of 238U, the study of parity non-conservation in the fission process, or precision measurements of fission fragments with good resolution using tagged photons in the entrance channel.

* Work supported by DFG through SFB 634, by the state of Hesse through the LOEWE center HIC for FAIR, and through the GSI-TU-Darmstadt cooperation.

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