# Core CIF Dictionary version 2.3

# _diffrn_refln_angle_

### Names

`'_diffrn_refln_angle_chi'`
`'_diffrn_refln_angle_kappa'`
`'_diffrn_refln_angle_omega'`
`'_diffrn_refln_angle_phi'`
`'_diffrn_refln_angle_psi'`
`'_diffrn_refln_angle_theta'`
**Category:** diffrn_refln

**Data type:** numb

**Must** appear in a looped list
containing `'_diffrn_refln_index_'`

**Units:** deg
( degrees)

### Definition

The diffractometer angles in degrees of a reflection. These
correspond to the specified orientation matrix and the original
measured cell before any subsequent cell transformations.

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