3.3.3. Contributed DefinitionsΒΆ

A description of each NeXus contributed definition is given. NXDL files in the NeXus contributed definitions include propositions from the community for NeXus base classes or application definitions, as well as other NXDL files for long-term archival by NeXus. Consider the contributed definitions as either in incubation or a special case not for general use. The NIAC: The NeXus International Advisory Committee is charged to review any new contributed definitions and provide feedback to the authors before ratification and acceptance as either a base class or application definition.

Some contributions are grouped together:

Optical Spectroscopy

Multi-dimensional Photoemission Spectroscopy

Atom Probe Microscopy

Electron Microscopy

Transport Measurements

Geometry and Microstructures

and others are simply listed here:

NXaberration

Quantified aberration coefficient in an aberration_model.

NXaberration_model

Models for aberrations of electro-magnetic lenses in electron microscopy.

NXaberration_model_ceos

CEOS definitions/model for aberrations of electro-magnetic lenses.

NXaberration_model_nion

NION definitions/model for aberrations of electro-magnetic lenses.

NXadc

Analog-to-digital converter component/integrated circuit.

NXaperture_em

Details of an individual aperture for beams in electron microscopy.

NXbeam_path

A beam path consisting of one or more optical elements.

NXbeam_splitter

A beam splitter, i.e. a device splitting the light into two or more beams.

NXcalibration

Subclass of NXprocess to describe post-processing calibrations.

NXchamber

Component of an instrument to store or place objects and specimens.

NXchemical_composition

(Chemical) composition of a sample or a set of things.

NXcircuit_board

Circuit board with e.g. ADC and/or DAC electronic components.

NXclustering

Metadata to the results of a clustering analysis.

NXcollectioncolumn

Subclass of NXelectronanalyser to describe the electron collection column of a

NXcontainer

State of a container holding the sample under investigation.

NXcoordinate_system_set

Container to hold different coordinate systems conventions.

NXcorrector_cs

Corrector for aberrations in an electron microscope.

NXcs_computer

Computer science description of a set of computing nodes.

NXcs_cpu

Computer science description of a central processing unit (CPU) of a computer.

NXcs_filter_boolean_mask

Computer science base class for packing and unpacking booleans.

NXcs_gpu

Computer science description of a graphic processing unit (GPU) of a computer.

NXcs_io_obj

Computer science description of a storage object in an input/output system.

NXcs_io_sys

Computer science description of system of a computer.

NXcs_mm_sys

Computer science description of a main memory system of a computer.

NXcs_prng

Computer science description of pseudo-random number generator.

NXcs_profiling

Computer science description for summary performance/profiling data of an application.

NXcs_profiling_event

Computer science description of a profiling event.

NXcsg

Constructive Solid Geometry base class, using NXquadric and NXoff_geometry

NXcxi_ptycho

Application definition for a ptychography experiment, compatible with CXI from version 1.6.

NXdac

Digital-to-analog converter component/integrated circuit.

NXdeflector

Deflectors as they are used e.g. in an electron analyser.

NXdelocalization

Base class to describe the delocalization of point-like objects on a grid.

NXdispersion

A dispersion denoting a sum of different dispersions.

NXdispersion_function

This describes a dispersion function for a material or layer

NXdispersion_repeated_parameter

A repeated parameter for a dispersion function

NXdispersion_single_parameter

A single parameter for a dispersion function

NXdispersion_table

A dispersion table denoting energy, dielectric function tabulated values.

NXdispersive_material

NXdispersion

NXdistortion

Subclass of NXprocess to describe post-processing distortion correction.

NXebeam_column

Container for components to form a controlled beam in electron microscopy.

NXelectronanalyser

Subclass of NXinstrument to describe a photoelectron analyser.

NXelectrostatic_kicker

definition for a electrostatic kicker.

NXellipsometry

Ellipsometry, complex systems, up to variable angle spectroscopy.

NXem

Characterization of a sample during a session on an electron microscope.

NXem_ebsd

Application definition for collecting and indexing Kikuchi pattern into orientation maps.

NXem_ebsd_conventions

Conventions for rotations and coordinate systems to interpret EBSD data.

NXem_ebsd_crystal_structure_model

Crystal structure phase models used for indexing Kikuchi pattern.

NXenergydispersion

Subclass of NXelectronanalyser to describe the energy dispersion section of a

NXevent_data_em

Metadata and settings of an electron microscope for scans and images.

NXevent_data_em_set

Container to hold NXevent_data_em instances of an electron microscope session.

NXfabrication

Details about a component as defined by its manufacturer.

NXfiber

An optical fiber, e.g. glass fiber.

NXgraph_edge_set

A set of (eventually directed) edges which connect nodes/vertices of a graph.

NXgraph_node_set

A set of nodes/vertices in space representing members of a graph.

NXgraph_root

An instance of a graph.

NXibeam_column

Container for components of a focused-ion-beam (FIB) system.

NXimage_set

Container for reporting a set of images taken.

NXimage_set_em_adf

Container for reporting a set of annular dark field images.

NXimage_set_em_kikuchi

Measured set of electron backscatter diffraction data, aka Kikuchi pattern.

NXinteraction_vol_em

Base class for storing details about a modelled shape of interaction volume.

NXion

Set of atoms of a molecular ion or fragment in e.g. ToF mass spectrometry.

NXisocontour

Computational geometry description of isocontouring/phase-fields in Euclidean space.

NXiv_temp

Application definition for temperature-dependent IV curve measurements.

NXlab_electro_chemo_mechanical_preparation

Grinding and polishing of a sample using abrasives in a wet lab.

NXlab_sample_mounting

Embedding of a sample in a medium for easing processability.

NXlens_em

Description of an electro-magnetic lens or a compound lens.

NXlens_opt

Description of an optical lens.

NXmagnetic_kicker

definition for a magnetic kicker.

NXmanipulator

Extension of NXpositioner to include fields to describe the use of manipulators

NXmatch_filter

Settings of a filter to select or remove entries based on their value.

NXmpes

This is the most general application definition for multidimensional

NXopt

An application definition for optical spectroscopy experiments.

NXoptical_system_em

A container for qualifying an electron optical system.

NXorientation_set

Details about individual orientations of a set of objects.

NXpeak

Description of peaks, their functional form or measured support.

NXpid

Contains the settings of a PID controller.

NXpolarizer_opt

An optical polarizer.

NXprogram

Base class to describe a software tool or library.

NXpulser_apm

Metadata for laser- and/or voltage-pulsing in atom probe microscopy.

NXpump

Device to reduce an atmosphere to a controlled remaining pressure level.

NXquadric

definition of a quadric surface.

NXquadrupole_magnet

definition for a quadrupole magnet.

NXreflectron

Device for reducing flight time differences of ions in ToF experiments.

NXregion

Geometry and logical description of a region of data in a parent group. When used, it could be a child group to, say, NXdetector.

NXregistration

Describes image registration procedures.

NXscanbox_em

Scan box and coils which deflect an electron beam in a controlled manner.

NXsensor_scan

Application definition for a generic scan using sensors.

NXseparator

definition for an electrostatic separator.

NXsimilarity_grouping

Metadata to the results of a similarity grouping analysis.

NXslip_system_set

Base class for describing a set of crystallographic slip systems.

NXsnsevent

This is a definition for event data from Spallation Neutron Source (SNS) at ORNL.

NXsnshisto

This is a definition for histogram data from Spallation Neutron Source (SNS) at ORNL.

NXsolenoid_magnet

definition for a solenoid magnet.

NXsolid_geometry

the head node for constructively defined geometry

NXspatial_filter

Spatial filter to filter entries within a region-of-interest based on their

NXspectrum_set

Container for reporting a set of spectra.

NXspectrum_set_em_eels

Container for reporting a set of electron energy loss (EELS) spectra.

NXspectrum_set_em_xray

Container for reporting a set of energy-dispersive X-ray spectra.

NXspin_rotator

definition for a spin rotator.

NXspindispersion

Subclass of NXelectronanalyser to describe the spin filters in photoemission

NXstage_lab

A stage lab can be used to hold, align, orient, and prepare a specimen.

NXsubsampling_filter

Settings of a filter to sample entries based on their value.

NXtransmission

Application definition for transmission experiments

NXwaveplate

A waveplate or retarder.

NXxpcs

X-ray Photon Correlation Spectroscopy (XPCS) data (results).