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Macromolecular dictionary (mmCIF) version 2.0.09

_diffrn_standards.decay_%

Name:
'_diffrn_standards.decay_%'

Definition:

   The percentage decrease in the mean of the intensities
   for the set of standard reflections from the start of the
   measurement process to the end. This value usually
   affords a measure of the overall decay in crystal quality
   during the diffraction measurement process. Negative values
   are used in exceptional instances where the final intensities
   are greater than the initial ones.

Type: float

Mandatory item: no

Alias:
_diffrn_standards_decay_% (cif_core.dic version 2.0.1)
The permitted range is (-infinity, 100.0]

Category: diffrn_standards