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Draft definition for _diffrn_measurement.specimen_adhesive

  • To: Distribution list of the IUCr COMCIFS Core Dictionary Maintenance Group<coredmg@iucr.org>
  • Subject: Draft definition for _diffrn_measurement.specimen_adhesive
  • From: James Hester via coreDMG <coredmg@iucr.org>
  • Date: Tue, 23 Jun 2020 16:10:29 +1000
  • Cc: James Hester <jamesrhester@gmail.com>
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Dear Core DMG,

Please see the following proposed new definition for describing the adhesive used to attach a single crystal specimen to a capillary or other sample holder attached to a goniometer head. I have provided one definition that selects from an enumerated list, useful for machine processing, and another that allows free-form text so that brand names and other details can be included.  If you know of any methods of adhesion that are not covered in the following list, please contribute them, and if I have suggested anything that is not used in practice, please let me know.

_definition.id     '_diffrn_measurement.specimen_adhesive_type'
The type of the adhesive material used to attach the sample to a sample holder.
Epoxy            "An epoxy glue"
Oil                  "A viscous oil"
Frozen_Liquid  "A frozen liquid, not water or oil"
Magnet          "Sample is held in place by magnetic field"
Clay               "Modelling clay"
.                     "No adhesive used"
Ice                 "The specimen is frozen in place using water ice"


_definition.id     '_diffrn_measurement.specimen_adhesive_details'
A description of the method of attachment of the sample to the sample holder. The general method of attachment
should be described using _diffrn_measurement.specimen_adhesive_type
"UHU Super Glue ultrafast gel"
"Sample was held tightly by a custom aluminium wire framework attached to the sample holder"

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