Core dictionary (coreCIF) version 2.4.5
The maximum and minimum transmission factors applied to the diffraction pattern measured in this experiment. These factors are also referred to as the absorption correction A or 1/A*. As this value is the one that is applied to the measured intensities, it includes the correction for absorption by the specimen mount and diffractometer as well as by the specimen itself.
The permitted range is 0.0 -> 1.0