.. do NOT edit this file
   automatically generated by dev_tools.docs.nxdl_index


.. index::
     ! see: class definitions; application definition
     ! application definition

.. _application.definitions:

Application Definitions
#########################

A description of each NeXus application definition is given.
NeXus application definitions define the *minimum*
set of terms that
*must* be used in an instance of that class.
Application definitions also may define terms that
are optional in the NeXus data file.  The definition, in this case,
reserves the exact term by declaring its spelling and description.
Consider an application definition as a *contract*
between a data provider (such as the beam line control system) and a
data consumer (such as a data analysis program for a scientific technique)
that describes the information is certain to be available in a data file.

Use NeXus links liberally in data files to reduce duplication of data.
In application definitions involving raw data,
write the raw data in the :ref:`NXinstrument` tree and then link to it
from the location(s) defined in the relevant application definition.

Application definitions are grouped together based on the research fields
where these are typically used. Definitions that address multiple
research fields are listed in each category:

  :ref:`Atom Probe Microscopy <AppDef-Apm-Structure>`

  :ref:`Diffraction Techniques <AppDef-Diff-Structure>`

  :ref:`Electron Microscopy <AppDef-Em-Structure>`

  :ref:`Multi-Dimensional Photoemission Spectroscopy <AppDef-Mpes-Structure>`

  :ref:`Optical Spectroscopy <AppDef-Opt-Spec-Structure>`

  :ref:`Scattering Techniques <AppDef-Sas-Structure>`

  :ref:`Time-of-Flight Techniques <AppDef-Tof-Structure>`
    
  :ref:`Complete List <AppDef-Complete-Structure>`


.. toctree::
    :hidden:

    apm-structure
    diff-structure
    em-structure
    mpes-structure
    optical-spectroscopy-structure
    sas-structure
    tof-structure
    complete-structure
    NXapm
    NXarchive
    NXarpes
    NXcanSAS
    NXdirecttof
    NXellipsometry
    NXem
    NXfluo
    NXindirecttof
    NXiqproc
    NXlauetof
    NXmonopd
    NXmpes
    NXmpes_arpes
    NXmx
    NXoptical_spectroscopy
    NXraman
    NXrefscan
    NXreftof
    NXsas
    NXsastof
    NXscan
    NXspe
    NXsqom
    NXstress
    NXstxm
    NXtas
    NXtofnpd
    NXtofraw
    NXtofsingle
    NXtomo
    NXtomophase
    NXtomoproc
    NXxas
    NXxasproc
    NXxbase
    NXxeuler
    NXxkappa
    NXxlaue
    NXxlaueplate
    NXxnb
    NXxps
    NXxrot