3.3.2.2. NXarpes

Status:

application definition, extends NXobject, version 1.0

Description:

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

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

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”, … 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: 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_CHAR {units=NX_LENGTH}

size of the entrance slit

pass_energy: (required) NX_CHAR {units=NX_ENERGY}

energy of the electrons on the mean path of the analyser

time_per_channel: (required) NX_CHAR {units=NX_TIME}

todo: define more clearly

angles: (required) NX_NUMBER {units=NX_ANGLE}

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 which dimension the axis applies to is defined using the normal NXdata methods.

sensor_size[]: (required) NX_INT

number of raw active elements in fast and slow pixel dimension direction

region_origin[]: (required) NX_INT

origin of rectangular region selected for readout

region_size[]: (required) NX_INT

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

NXDL Source:
https://github.com/nexusformat/definitions/blob/master/applications/NXarpes.nxdl.xml