Open AccessA continuously scanning separate-crystal single-photon x-ray interferometer
Author(s) -
Birk Andreas,
U. Kuetgens
Publication year - 2020
Publication title -
measurement science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.48
H-Index - 136
eISSN - 1361-6501
pISSN - 0957-0233
DOI - 10.1088/1361-6501/ab9b60
Subject(s) - interferometry , optics , interference (communication) , physics , photon , reproducibility , measure (data warehouse) , astronomical interferometer , mach–zehnder interferometer , length measurement , computer science , mathematics , telecommunications , statistics , channel (broadcasting) , database
The feasibility of a new design and measurement concept of a combined optical and x-ray interferometer (COXI) is demonstrated here. Mechanical noise in the x-ray interferometer can be cancelled efficiently with fast and synchronous detection of the optical interferometer phase and x-ray counts. The scan-length requirement of the decadic step method of conventional COXI setups is reduced by more than one order of magnitude due to the correlation between single-photon interference events. The actual scan length of the shown setup is limited to 4 µm. It is estimated that a future update will enable us to measure the lattice parameter of 28 Si, at least with the targeted relative statistical reproducibility of 3 × 10 −9 .