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Discussion on a new item for the core CIF dictionary
- To: Distribution list of the IUCr COMCIFS Core Dictionary Maintenance Group <coredmg@iucr.org>
- Subject: Discussion on a new item for the core CIF dictionary
- From: David Brown <idbrown@mcmaster.ca>
- Date: Mon, 30 Sep 2013 12:14:33 -0400
Dear Colleagues, This email is being circulated to the core CIF Dictionary Management Group for comment and possible approval. Brian Toby has suggested the addition of a new item for the core CIF dictionary. This is diffrn_radiation_wavelength_type. The proposed description is: data_diffrn_radiation_wavelength_type _name '_diffrn_radiation_wavelength_type' _category diffrn_radiation_wavelength _type char _list both _list_reference '_diffrn_radiation_wavelength_id' loop_ _example 'Cu K\a' 'Cu K\a~1~' 'Cu K-L~2,3~' white-beam _definition ; The type of the radiation. This is used to give a description of the nature of the radiation corresponding to a particular wavelength used in the diffraction pattern. It is typically a description of the X-ray wavelength in Siegbahn notation. ; This item contains the same information as _diffrn_radiation_type which cannot be looped. By adding _*_type to the diffrn_radiation_wavelength category it becomes possible to loop the radiation type together with the corresponding wavelength, viz: _loop _diffrn_radiation_wavelength_id _diffrn_radiation_wavelength _diffrn_radiation_wavelength_type 1 1.54056 'K\\a~1~' 2 1.54439 'K\\a~2~' This item will be open for review for six weeks ending on 11 November 2013. Comments should be send to the core CIF dmg at coredmg@iucr.org. If no comments are received by that time it will be assumed that there are no objections and this item will be added to the core CIF dictionary. David Brown Chair Core CIF Dictionary Management Group |
begin:vcard fn:I.David Brown n:Brown;I.David org:McMaster University;Brockhouse Institute for Materials Research adr:;;King St. W;Hamilton;Ontario;L8S 4M1;Canada email;internet:idbrown@mcmaster.ca title:Professor Emeritus tel;work:+905 525 9140 x 24710 tel;fax:+905 521 2773 version:2.1 end:vcard
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