base class, extends NXobject
Properties of the neutron or X-ray beam at a given location.
It will be referenced by beamline component groups within the NXinstrument group or by the NXsample group. Note that variables such as the incident energy could be scalar values or arrays. This group is especially valuable in storing the results of instrument simulations in which it is useful to specify the beam profile, time distribution etc. at each beamline component. Otherwise, its most likely use is in the NXsample group in which it defines the results of the neutron scattering by the sample, e.g., energy transfer, polarizations.
No symbol table
- Groups cited:
@default: (optional) NX_CHAR
Declares which child group contains a path leading to a NXdata group.
It is recommended (as of NIAC2014) to use this attribute to help define the path to the default dataset to be plotted. See https://www.nexusformat.org/2014_How_to_find_default_data.html for a summary of the discussion.
Distance from sample
Energy on entering beamline component
Energy on leaving beamline component
Energy change caused by beamline component
Wavelength on entering beamline component
Wavelength spread FWHM on entering component
Divergence of beam entering this component
Size of the beam entering this component
Wavelength on leaving beamline component
Polarization vector on entering beamline component
Polarization vector on leaving beamline component
Wavelength spread FWHM of beam leaving this component
Divergence FWHM of beam leaving this component
flux incident on beam plane area
DATA: (optional) NXdata
Distribution of beam with respect to relevant variable e.g. wavelength. This is mainly useful for simulations which need to store plottable information at each beamline component.
Table of hypertext anchors for all groups, fields, attributes, and links defined in this class.
documentation (reST source) anchor
web page (HTML) anchor