ABSTRACT
A clamp pressure cell for neutron scattering experiments at low temperatures and in external magnetic fields under pressure up to 2 GPa has been fabricated and tested. The cell provides optical access to the sample space that allows instantaneous pressure determination during sample loading, cooling and measuring using ruby and/or samarium doped strontium tetraborate fluorescence monitoring. A new calibration curve of the pressure-induced shift of the (0-0) line in the fluorescent spectrum of SrB
O
:Sm
for moderate pressures,
GPa, is given.
Acknowledgments
This research used resources at the Spallation Neutron Source and the High Flux Isotope Reactor, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory.
Disclosure statement
No potential conflict of interest was reported by the authors.
ORCID
A. Podlesnyak http://orcid.org/0000-0001-9366-6319
M. Lumsden http://orcid.org/0000-0002-5472-9660