Journal Article

PreJuSER-19541

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png A quantum-mechanical description of Rotating Field Spin Echo

Arend, N.FZJ* ; Häußler, W.

2011
EDP Sciences Les Ulis

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Please use a persistent id in citations: doi:10.1209/0295-5075/96/42001

Abstract: Neutron Spin Echo (NSE) is a technique for quasi-elastic neutron scattering with very high energy resolution. The latter is achieved by comparing the Larmor precession angles of a polarized neutron beam in two well-known magnetic fields before and after scattering in a sample. This "spin encoding" or "Larmor labeling" can be implemented by different technical methods, the most established variants being conventional NSE and Neutron Resonance Spin Echo (NRSE). In this publication we discuss Rotating Field Spin Echo (RFSE), a technique for measurements in the low-resolution domain. The analogy to NRSE is demonstrated by deriving the working principle using the quantum-mechanical method of time-evolution operators, a technique that was developed for NRSE in previous publications. Furthermore, we give an estimation of the inherent upper frequency limit of RFSE based on our theory. Copyright (C) EPLA, 2011

Keyword(s): J

Note: This research has been supported by the European Commission under the 6th Framework Programme through the Key Action: Strengthening the European Research Area, Research Infrastructures, Contract No: RII3-CT-2003-505925.

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Contributing Institute(s):

1. Neutronenstreuung (ICS-1)
2. Neutronenstreuung (JCNS-1)
3. Streumethoden (JCNS-2)

Research Program(s):

1. BioSoft: Makromolekulare Systeme und biologische Informationsverarbeitung (P45)
2. Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) (P55)

Experiment(s):

1. RESEDA: Resonance spin echo spectrometer (NL5S)

Appears in the scientific report 2011

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Database coverage:
JCR ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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