NXxkappa

Status:

application definition, extends NXxbase

Description:

raw data from a kappa geometry (CAD4) single crystal diffractometer, extends NXxbase

This is the application definition for raw data from a kappa geometry (CAD4) single crystal diffractometer. It extends NXxbase, so the full definition is the content of NXxbase plus the data defined here.

Symbols:

The symbol(s) listed here will be used below to coordinate datasets with the same shape.

nP: Number of points

Groups cited:

NXdata, NXdetector, NXentry, NXinstrument, NXsample

Structure:

entry: (required) NXentry

definition: (required) NX_CHAR

Official NeXus NXDL schema to which this file conforms

Obligatory value: NXxkappa

instrument: (required) NXinstrument

detector: (required) NXdetector

polar_angle: (required) NX_FLOAT (Rank: 1, Dimensions: [nP]) {units=NX_ANGLE}

The polar_angle (two theta) at each scan point

sample: (required) NXsample

rotation_angle: (required) NX_FLOAT (Rank: 1, Dimensions: [nP]) {units=NX_ANGLE}

This is an array holding the sample rotation angle at each scan point

kappa: (required) NX_FLOAT (Rank: 1, Dimensions: [nP]) {units=NX_ANGLE}

This is an array holding the kappa angle at each scan point

phi: (required) NX_FLOAT (Rank: 1, Dimensions: [nP]) {units=NX_ANGLE}

This is an array holding the phi angle at each scan point

alpha: (required) NX_FLOAT {units=NX_ANGLE}

This holds the inclination angle of the kappa arm.

name: (required) NXdata

polar_angle: link (suggested target: /NXentry/NXinstrument/NXdetector/polar_angle

rotation_angle: link (suggested target: /NXentry/NXsample/rotation_angle

kappa: link (suggested target: /NXentry/NXsample/kappa

phi: link (suggested target: /NXentry/NXsample/phi

Hypertext Anchors

List of hypertext anchors for all groups, fields, attributes, and links defined in this class.

NXDL Source:

https://github.com/FAIRmat-Experimental/nexus_definitions/tree/fairmat/applications/NXxkappa.nxdl.xml