3.3.2.11. 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 NXmpes, as well as a specialization for ARPES experiments, called NXmpes_arpes.”

Symbols:

No symbol table

Groups cited:

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

Structure:

ENTRY: (required) NXentry

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, links, and symbols defined in this class.

NXDL Source:

https://github.com/nexusformat/definitions/blob/main/applications/NXarpes.nxdl.xml