This title appears in the Scientific Report :
2008
Please use the identifier:
http://dx.doi.org/10.1088/0957-0233/19/3/034022 in citations.
The JCNS neutron spin-echo spectrometer J-NSE at the FRM II
The JCNS neutron spin-echo spectrometer J-NSE at the FRM II
Neutron spin echo (NSE) spectroscopy is, due to its high energy resolution, a well-suited method for studying slow dynamics, such as the dynamics of soft matter systems (glasses, polymers and complex liquids), or paramagnetic properties of, e.g., spin glasses. The Julich NSE spectrometer has been in...
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Personal Name(s): | Holderer, O. |
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Monkenbusch, M. / Schätzler, R. / Kleines, H. / Westerhausen, W. / Richter, D. | |
Contributing Institute: |
Zentralinstitut für Elektronik; ZEL JCNS; JCNS Streumethoden; IFF-4 Neutronenstreuung; IFF-5 Zentralinstitut für Technologie; ZAT |
Published in: | Measurement science and technology, 19 (2008) S. 034022 |
Imprint: |
Bristol
IOP Publ.
2008
|
Physical Description: |
034022 |
DOI: |
10.1088/0957-0233/19/3/034022 |
Document Type: |
Journal Article |
Research Program: |
Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) Kondensierte Materie |
Series Title: |
Measurement Science and Technology
19 |
Subject (ZB): | |
Publikationsportal JuSER |
Neutron spin echo (NSE) spectroscopy is, due to its high energy resolution, a well-suited method for studying slow dynamics, such as the dynamics of soft matter systems (glasses, polymers and complex liquids), or paramagnetic properties of, e.g., spin glasses. The Julich NSE spectrometer has been in operation at the Julich research reactor FRJ-2 since 1996. It has been transferred now to the new research reactor FRM II of the TU Munchen, where it just started to continue operation. In the context of the transfer, parts of the spectrometer have been renewed and improved, leading to a significantly larger energy resolution and a larger dynamic range. Amongst other things, new correction coils have been designed and manufactured, allowing us to use higher currents in the main precession coils. The neutron guide system of the J-NSE allows the variation of the wavelength between about 4.5 to 16 angstrom. A larger neutron guide exit of 60 x 60 mm(2), the higher neutron flux, the possibility of varying the wavelength over a broad range and the better correction elements push the performance of the instrument to Fourier times tau = 1 ps to about 350 ns, with a q-range of q = 0.02-1.5 angstrom(-1). We describe here the technical changes and improvements of the J-NSE and show the first spin echoes measured with the reinstalled spectrometer. |