EXAFS MEASUREMENT UNDER HIGH PRESSURE BY DIAMOND ANVIL CELL

K. Ohsumi , S. Sueno , I. Nakai , M. Imafuku , Naoto Morikawa , M. Kimata , M. Nomura , O. Shimomura

EXAFS spectra of materials under high pressure were successfully obtained for K-absorption edges of Fe, Co and Ni atoms by making use of synchrotron radiation together with the diamond anvil cell technique. A newly developed goniometer stage with a remote controlled motor was found to be useful for adjusting the position of a miniature diamond anvil cell for an X-ray beam. The present study revealed that an experimental system consisting of a Si(111) monochromator, a scintillation counter and a pair of normal 1/8 carats diamond anvils worked well for the measurement of Fe, Co and Ni atoms. For further measurement of absorption spectra of atoms with lower atomic number than Fe, a specially designed thinner diamond anvil or higher brightness synchrotron radiation source would be required.

Domaines: Articles anciens

K. Ohsumi, S. Sueno, I. Nakai, M. Imafuku, Naoto Morikawa, et al.. EXAFS MEASUREMENT UNDER HIGH PRESSURE BY DIAMOND ANVIL CELL. Journal de Physique Colloques, 1986, 47 (C8), pp.C8-189-C8-192. ⟨10.1051/jphyscol:1986835⟩. ⟨jpa-00226157⟩