SASsource¶

The SASsource element

Name	Type	Occurrence	Description	Attributes
radiation	string	[1..1]	Name of the radiation used. For maximum compatibility with NeXus, use one of the types defined by NeXus NXsource: [1] Spallation Neutron Source Pulsed Reactor Neutron Source Reactor Neutron Source Synchrotron X-ray Source Pulsed Muon Source Rotating Anode X-ray Fixed Tube X-ray or the NeXus probe type: neutron x-ray muon electron
beam_size	container	[0..1]	Physical dimension of the beam (incident on the sample). If beam is round, just use X dimension.	name={name} [2]
beam_shape	string	[0..1]	Text description of the shape of the beam (incident on the sample).
wavelength	float	[0..1]	wavelength (\(\lambda\)) of radiation incident on the sample.	unit={unit} [3]
wavelength_min	float	[0..1]	Some facilities specify wavelength using a range. The minimum of such a range is given by* wavelength_min*.	unit={unit} [3]
wavelength_max	float	[0..1]	Some facilities specify wavelength using a range. The maximum of such a range is given by* wavelength_max*.	unit={unit} [3]
wavelength_spread	float	[0..1]	Some facilities specify the width of the wavelength spectrum. The width of such a range is given by wavelength_spread.	unit={unit} [3]

geometry¶

Name	Type	Occurrence	Description	Attributes
\(x\)	float	[0..1]	Dimension of the beam in X.	unit={unit} [3]
\(y\)	float	[0..1]	Dimension of the beam in Y.	unit={unit} [3]
\(z\)	float	[0..1]	Dimension of the beam in Z.	unit={unit} [2] [3]

Table Notes

[1]	NeXus NXsource: http://download.nexusformat.org/doc/html/ClassDefinitions-Base.html#NXsource

[2]	(1, 2) While \(z\) is allowed by the standard (provided by use of a standard size element in the XML Schema), it does not make sense to use it for small-angle scattering in some situations as noted. Use of \(z\) in such situations may be ignored by processing software.

[3]	(1, 2, 3, 4, 5, 6, 7) The unit attribute is required. See Rules for acceptable values.