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A holder to rotate sample cells to avoid sedimentation in small-angle neutron scattering and ultra small-angle neutron scattering experiments

2013; IOP Publishing; Volume: 24; Issue: 10 Linguagem: Inglês

10.1088/0957-0233/24/10/105901

1361-6501

Anders Olsson, Maja S. Hellsing, Adrian R. Rennie,

Quantum, superfluid, helium dynamics

Sedimentation, or creaming, of samples can significantly alter the amount of material in the beam during small-angle scattering experiments. Simple rotating mounts that ameliorate this effect are described and the design criteria are carefully discussed. A modular design permits simple adaptation to various instruments and different sample cells. Temperature control in the range 10 °C below ambient to about +40 °C has been implemented using air flow and a Peltier device. Example ultra small-angle neutron scattering data are shown that exploit the simplicity of the mounts and the capability to position several samples close together on a translation stage.