Abstract
To complement helium-3 spin-echo (HeSE) dynamics studies, a compact high-resolution helium atom scattering spectrometer has been developed. The instrument can be used for helium diffraction studies, thermal desorption measurements and uptake experiments. In addition, the new spectrometer aids in the equipment development for the HeSE apparatus. The main design features of the apparatus are described and characterisation experiments as well as first structural studies presented.
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Notes
- 1.
The overall geometry of the instrument and the mechanical details of frame and vacuum chambers were designed by A. P. Jardine.
- 2.
After the source has been installed on the HeSE spectrometer, experiments recording the beam profile using the ingoing solenoid have confirmed that the temperature readings are accurate to within 1 K in the temperature range used for these measurements (cf. Sect. 4.2.2).
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Lechner, B.A.J. (2014). A New Helium Atom Scattering Apparatus. In: Studying Complex Surface Dynamical Systems Using Helium-3 Spin-Echo Spectroscopy. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-01180-6_3
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DOI: https://doi.org/10.1007/978-3-319-01180-6_3
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