XmlmmCIF equivalent: diffrn_attenuator Data items in the DIFFRN_ATTENUATOR category record details about the diffraction attenuator scales employed. XmlmmCIF equivalent: diffrn_attenuator/scale The scale factor applied when an intensity measurement is reduced by an attenuator identified by _diffrn_attenuator_code. This scale must be multiplied by the measured intensity to convert it to the same scale as unattenuated intensities. XmlmmCIF equivalent: diffrn_attenuator/code A code associated with a particular attenuator setting. This code is referenced by the _diffrn_refln.attenuator_code which is stored with the diffraction data. See _diffrn_attenuator.scale.