Data Item _diffrn_source.source
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General 
- Item name
- _diffrn_source.source
- Category name
- diffrn_source
- Attribute name
- source
- Required in PDB entries
- no
- Required for PDB deposition
- yes
- Used in current PDB entries
- Yes, in about 82.1 % of entries
Item Description
The general class of the radiation source.
Additional Descriptive Information for Depositors
If an X-ray generator was used, please specify the name and model of the generator. If your particular model is not found, use other.
Item Example1
sealed X-ray tube
Item Example2
nuclear reactor
Item Example3
spallation source
Item Example4
electron microscope
Item Example5
rotating-anode X-ray tube
Item Example6
synchrotron
Data Type 
- Data type code
- text
- Data type detail
- text item types / multi-line text ...
- Primitive data type code
- char
- Regular expression
- [][ \n\t()_,.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*
Controlled Vocabulary at Deposition
| Allowed Value | Details |
|---|---|
| ELECTRON MICROSCOPE | electron |
| FREE ELECTRON LASER | x-ray |
| LIQUID ANODE | x-ray |
| NUCLEAR REACTOR | neutron |
| ROTATING ANODE | x-ray |
| SEALED TUBE | x-ray |
| SPALLATION SOURCE | neutron |
| SYNCHROTRON | x-ray |
Aliases
| Alias Item Name | Dictionary Name | Dictionary Version |
|---|---|---|
| _diffrn_radiation_source | cifdic.c91 | 1.0 |
| _diffrn_source | cif_core.dic | 2.0 |