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Figure 3
A schematic depiction of the experimental setup designed for measuring the antisymmetric Compton profile in a crystal of the polar ferromagnet GaFeO3. A reversible magnetic field was applied along the crystal c axis, with the polar b axis vertical. The toroidal a axis was aligned close to the direction of photon momentum transfer, which defines the projection direction for the momentum density. The sample was held below its magnetic ordering temperature by a nitrogen gas-jet cooler, and scattered photons detected by a multi-element germanium solid-state detector array (not shown), close to back-scattering.

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ISSN: 2053-2733
Volume 72| Part 2| March 2016| Pages 197-205
https://doi.org/10.1107/S2053273316000863
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