Berlin 2012 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 33: Superconductivity, Measuring Devices, Matter at Low Temperature: Poster Session
TT 33.71: Poster
Mittwoch, 28. März 2012, 15:00–19:00, Poster B
(contribution withdrawn)Modulated Intensity Spin Echo: µeV resolution for dynamics in magnetic samples — •Georg Brandl1,2, Robert Georgii2, Wolfgang Häußler2, and Peter Böni1 — 1Physik Department E21, Technische Universität München, D-85748 Garching — 2Forschungsneutronenquelle Heinz Maier-Leibnitz, Technische Universität München, D-85748 Garching
The MIEZE technique (Modulation of IntEnsity by Zero Effort) [1,2] is a variant of the neutron spin echo technique [3] that achieves the same very high energy resolution by converting a neutron spin oscillation into a high-frequency modulation of the neutron beam. Because all beam preparation is done before the sample, MIEZE is well suited to measuring magnetic samples, even in high magnetic fields, both of which are unfavorable conditions for measurements with conventional neutron spin echo.
Here, an introduction is given to the MIEZE principle and presents setup and measurements performed with MIEZE in magnetic fields, both at the FRM II in Munich [4] and at the HFIR in Oak Ridge [5]. Also discussed is the design of a drop-in MIEZE module that can be added to existing neutron instruments.
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