ABSTRACT
A new high pressure cell for neutron diffraction experiments using nano-polycrystalline anvils is presented. The cell design, off-line pressure generation tests and a gas-loading procedure for this cell are described. The performance is illustrated by powder neutron diffraction patterns of ice VII to ∼82 GPa. We also demonstrate the feasibility of single crystal neutron diffraction experiments of Fe3O4 at ambient conditions using this cell and discuss the current limitation and future developments.
Acknowledgments
We are grateful to Drs. J. Abe and K. Funakoshi for their assistance to the experiments, and Dr. H. Arima for giving information on the focusing mirror. Y. Guarnelli and A. Polian for help in the gas loading at IMPMC and J. Philippe for help in the design of the original sapphire cell. Neutron diffraction experiments were performed through the J-PARC user programs (Nos. 2016I0011, 2017I0011, 2019I0011, 2019B0119). This study was supported by JSPS KAKENHI (Grant Numbers: 18H05224, 18H01936, 15H05829) and JSPS-CNRS bilateral joint research project.
Disclosure statement
No potential conflict of interest was reported by the author(s).
ORCID
Kazuki Komatsu http://orcid.org/0000-0003-3573-9174
Stefan Klotz http://orcid.org/0000-0002-5682-4960
Keishiro Yamashita http://orcid.org/0000-0003-3215-3995