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An optical chopper for generation of short X‐ray pulses to allow in‐house time‐resolved photocrystallography
Author(s) -
Kamiński Radosław,
Nottingham Gary,
Coppens Philip
Publication year - 2014
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s160057671401961x
Subject(s) - chopper , shutter , enclosure , optics , diffractometer , sample (material) , rotation (mathematics) , materials science , optoelectronics , computer science , physics , electrical engineering , engineering , voltage , scanning electron microscope , artificial intelligence , thermodynamics
As part of a project to implement in‐house time‐resolved diffraction of short‐lifetime species, a fast shutter with a custom‐designed enclosure has been installed. The device is suitable for generation of X‐ray pulses with time lengths down to about 5 µs. The design does not require major modifications to commercially available diffractometer setups. Significant airflow, generated by the rotating chopper disc, which interferes with temperature control at the sample, has been eliminated by a compact enclosure, which does not interfere with sample monitoring and conditioning devices. It allows for full rotation of the diffractometer circles.