NXxas¶
Status:
application definition, extends NXobject
Description:
This is an application definition for raw data from an X-ray absorption spectroscopy experiment.
This is essentially a scan on energy versus incoming/ absorbed beam.
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, NXmonitor, NXmonochromator, NXsample, NXsource
Structure:
ENTRY: (required) NXentry
@entry: (required) NX_CHAR
NeXus convention is to use “entry1”, “entry2”, … for analysis software to locate each entry.
title: (required) NX_CHAR
start_time: (required) NX_DATE_TIME
definition: (required) NX_CHAR
Official NeXus NXDL schema to which this file conforms
Obligatory value:
NXxasINSTRUMENT: (required) NXinstrument
SOURCE: (required) NXsource
monochromator: (required) NXmonochromator
energy: (required) NX_FLOAT (Rank: 1, Dimensions: [nP])
incoming_beam: (required) NXdetector
data: (required) NX_NUMBER (Rank: 1, Dimensions: [nP])
absorbed_beam: (required) NXdetector
data: (required) NX_NUMBER (Rank: 1, Dimensions: [nP])
This data corresponds to the sample signal.
SAMPLE: (required) NXsample
name: (required) NX_CHAR
Descriptive name of sample
MONITOR: (required) NXmonitor
mode: (required) NX_CHAR
Count to a preset value based on either clock time (timer) or received monitor counts (monitor).
Any of these values:
monitor|timerpreset: (required) NX_FLOAT
preset value for time or monitor
data: (required) NX_NUMBER (Rank: 1, Dimensions: [nP])
This field could be a link to
/NXentry/NXinstrument/incoming_beam:NXdetector/dataDATA: (required) NXdata
mode: (required) NX_CHAR
Detection method used for observing the sample absorption (pick one from the enumerated list and spell exactly)
Any of these values:
Total Electron Yield
Partial Electron Yield
Auger Electron Yield
Fluorescence Yield
Transmissionenergy: link (suggested target:
/NXentry/NXinstrument/monochromator:NXmonochromator/energy)absorbed_beam: link (suggested target:
/NXentry/NXinstrument/absorbed_beam:NXdetector/data)
Hypertext Anchors¶
List of hypertext anchors for all groups, fields, attributes, and links defined in this class.
