| Instrumental setup for polarized neutron scattering experiments (2003) | |||||||||||
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| JOURNAL APPLIED PHYSICS VOLUME NUMBER MAY Instrumental setup for polarized neutron scattering experiments Schmidta and Ohl Forschungszentrum Julich Institut fur Festkorperforschung Julich Germany Ruppert University Applied Science Darmstadt Darmstadt Germany Buchenau Forschungszentrum Julich Institut fur Festkorperforschung Julich Germany Presented November Neutron scattering with polarization analysis powerful tool determine magnetic structures and excitations common setup mount the sample the center Helmholtz type coil which can provide magnetic eld any direction the sample position and also guide eld along the neutron ight paths around the sample have extended the standard setup combination large vacuum tank surrounded the electrical coils The vacuum tank eliminates the air scattering and can use the polarization analysis down the lowest accessible momentum transfers The coils themselves also show some appealing features contrast the classic symmetric coil distribution use asymmetric setup which gives the advantage larger scattering window Due more sophisticated current distribution this modi Helmholtz coil does not need rotated for different scattering conditions The whole setup currently being constructed the instrument three axis spectrometer for cold neutrons operated Julich collaboration with CEA Grenoble CRG instrument the Institut Laue Langevin Grenoble American Institute Physics DOI INTRODUCTION recent years there has been rather high demand for inelastic neutron s | |||||||||||
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