Item _cell.reciprocal_angle_gamma
Description
The angle (recip-gamma) defining the reciprocal cell in degrees.
(recip-alpha), (recip-alpha) and (recip-alpha) related to the
angles in the real cell by:
cos(recip-alpha)
= [cos(beta)*cos(gamma) - cos(alpha)]/[sin(beta)*sin(gamma)]
cos(recip-beta)
= [cos(gamma)*cos(alpha) - cos(beta)]/[sin(gamma)*sin(alpha)]
cos(recip-gamma)
= [cos(alpha)*cos(beta) - cos(gamma)]/[sin(alpha)*sin(beta)]
Ref: Buerger, M. J. (1942). X-ray Crystallography, p. 360.
New York: John Wiley & Sons Inc.
Category
cell
Mandatory Code
no
Data Type Code
float
Units
degrees
Default Value
90.0
Enumeration Range
| Minimum Value |
Maximum Value |
| 0.0 |
0.0 |
| 0.0 |
180.0 |
| 180.0 |
180.0 |
Alias Names
| Alias Name |
Dictionary |
Version |
| _cell_reciprocal_angle_gamma |
cif_core.dic |
2.3 |
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