2.3.3.2.2. NXarpes

Status:

application definition, extends NXobject

Description:

This is an application definition for angular resolved photo electron spectrosco ...

This is an application definition for angular resolved photo electron spectroscopy.

It has been drawn up with hemispherical electron analysers in mind.

This definition is a legacy support for older NXarpes experiments. There is, however, a newer definition to collect data & metadata for general photoemission experiments, called :ref:NXmpes, as well as a specialization for ARPES experiments, called :ref:NXmpes_arpes.”

Symbols:

No symbol table

Groups cited:

NXdata, NXdetector, NXentry, NXinstrument, NXmonochromator, NXsample, NXsource

Structure:

ENTRY: (required) NXentry

@entry: (required) NX_CHAR

NeXus convention is to use "entry1", "entry2", ... ...

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. ...

Official NeXus NXDL schema to which this file conforms.

Obligatory value: NXarpes

INSTRUMENT: (required) NXinstrument ⤆

SOURCE: (required) NXsource ⤆

type: (required) NX_CHAR ⤆

name: (required) NX_CHAR ⤆

probe: (required) NX_CHAR ⤆

Obligatory value: x-ray

monochromator: (required) NXmonochromator ⤆

energy: (required) NX_NUMBER {units=NX_ENERGY}

analyser: (required) NXdetector ⤆

data: (required) NX_NUMBER ⤆

lens_mode: (required) NX_CHAR

setting for the electron analyser lens

acquisition_mode: (required) NX_CHAR ⤆

Any of these values: swept | fixed

entrance_slit_shape: (required) NX_CHAR

Any of these values: curved | straight

entrance_slit_setting: (required) NX_NUMBER {units=NX_ANY}

dial setting of the entrance slit

entrance_slit_size: (required) NX_NUMBER {units=NX_LENGTH}

size of the entrance slit

pass_energy: (required) NX_NUMBER {units=NX_ENERGY}

energy of the electrons on the mean path of the analyser

time_per_channel: (required) NX_NUMBER {units=NX_TIME}

todo: define more clearly

angles: (required) NX_NUMBER {units=NX_ANGLE}

Angular axis of the analyser data ...

Angular axis of the analyser data which dimension the axis applies to is defined using the normal NXdata methods.

energies: (required) NX_NUMBER {units=NX_ENERGY}

Energy axis of the analyser data ...

Energy axis of the analyser data which dimension the axis applies to is defined using the normal NXdata methods.

sensor_size: (required) NX_INT (Rank: 1, Dimensions: [2])

number of raw active elements in each dimension

region_origin: (required) NX_INT (Rank: 1, Dimensions: [2])

origin of rectangular region selected for readout

region_size: (required) NX_INT (Rank: 1, Dimensions: [2])

size of rectangular region selected for readout

SAMPLE: (required) NXsample ⤆

name: (required) NX_CHAR ⤆

Descriptive name of sample

temperature: (required) NX_NUMBER {units=NX_TEMPERATURE}

DATA: (required) NXdata ⤆

Hypertext Anchors

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

NXDL Source:

https://github.com/FAIRmat-NFDI/nexus_definitions/tree/fairmat/applications/NXarpes.nxdl.xml