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Rotation data collection for protein crystallography with time‐variable incident intensity from synchrotron radiation sources
Author(s) -
Bartunik H. D.,
Clout P. N.,
Robrahn B.
Publication year - 1981
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/s0021889881008923
Subject(s) - collimator , synchrotron radiation , optics , synchrotron , rotation (mathematics) , intensity (physics) , scaling , physics , data collection , beam (structure) , radiation , computer science , statistics , geometry , mathematics , artificial intelligence
Time‐variable incident intensity from synchrotron radiation sources may cause scaling errors in crystallographic data collection using integrative techniques as in rotation methods. This problem is avoided with a new technique which has been developed for computer‐controlled film data collection with an Arndt–Wonacott camera. Effects of intensity fluctuations are automatically compensated by hardware on the basis of incident‐beam monitoring with a small ionization chamber placed between collimator and crystal.