This title appears in the Scientific Report :
2003
Please use the identifier:
http://dx.doi.org/10.1016/S0921-4526(03)00234-5 in citations.
Implementation of a zero-field spin-echo option at the three-axis spectrometer IN3 (ILL, Grenoble) and first application for measurements of phonon line widths in superfluid 4He
Implementation of a zero-field spin-echo option at the three-axis spectrometer IN3 (ILL, Grenoble) and first application for measurements of phonon line widths in superfluid 4He
We report on a new zero-field spin-echo spectrometer (ZETA), installed at the thermal three-axis spectrometer IN3 at ILL, Grenoble. In this technique the two long precession solenoids from neutron spin echo are replaced by two pairs of magnetic resonance coils in a zero-field region. This allows eas...
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Personal Name(s): | Klimko, S. |
---|---|
Stadler, C. / Böni, P. / Currat, R. / Demmel, F. / Fåk, B. / Gähler, R. / Mezei, F. / Toperverg, B. | |
Contributing Institute: |
Streumethoden; IFF-STM |
Published in: | Physica / B, 335 (2003) S. 188 - 192 |
Imprint: |
Amsterdam
North-Holland Physics Publ.
2003
|
Physical Description: |
188 - 192 |
DOI: |
10.1016/S0921-4526(03)00234-5 |
Document Type: |
Journal Article |
Research Program: |
Kondensierte Materie |
Series Title: |
Physica B: Condensed Matter
335 |
Subject (ZB): | |
Publikationsportal JuSER |
We report on a new zero-field spin-echo spectrometer (ZETA), installed at the thermal three-axis spectrometer IN3 at ILL, Grenoble. In this technique the two long precession solenoids from neutron spin echo are replaced by two pairs of magnetic resonance coils in a zero-field region. This allows easy adaptation of tilted field geometries, necessary for measurements of phonon line widths with mueV energy resolution. First test measurements of the roton line width and energy shift as well as line width of the low-Q phonon and in the "region beyond the roton" in superfluid He-4 are described. The results are in agreement with the literature and show the good operation of ZETA. The implementation of ZETA at the high-flux three-axis spectrometer IN20, foreseen in the near future, will increase the count rate by typically one order of magnitude: (C) 2003 Elsevier Science B.V. All rights reserved. |