.. auto-generated by dev_tools.docs.nxdl from the NXDL source base_classes/NXem_interaction_volume.nxdl.xml -- DO NOT EDIT

.. index::
    ! NXem_interaction_volume (base class)
    ! em_interaction_volume (base class)
    see: em_interaction_volume (base class); NXem_interaction_volume

.. _NXem_interaction_volume:

=======================
NXem_interaction_volume
=======================

**Status**:

  base class, extends :ref:`NXobject`

**Description**:

  .. collapse:: Base class to describe the volume of interaction for particle-matter interaction ...

      Base class to describe the volume of interaction for particle-matter interaction.

      Computer models like Monte Carlo or molecular dynamics / electron- or ion-beam
      interaction simulations can be used to qualify and (or) quantify the shape of
      the interaction volume. Results of such simulations can be summary statistics
      or single-particle-resolved sets of trajectories.

      Explicit or implicit descriptions of the geometry of this
      interaction volume are possible:

      * An implicit description is via a set of electron/specimen interactions
        represented ideally as trajectory data from the computer simulation.
      * An explicit description is via iso-contour surface using either
        a simulation grid or a triangulated surface mesh of the approximated
        iso-contour surface evaluated at specific threshold values.
        Iso-contours could be computed from electron or particle flux through
        an imaginary control surface (the iso-surface) or energy-levels
        (e.g. the case of X-rays). Details depend on the model.
      * Another explicit description is via theoretical models which may
        be relevant e.g. for X-ray spectroscopy

      Further details on how the interaction volume can be quantified
      is available in the literature for example:

      * `S. Richter et al. <https://doi.org/10.1088/1757-899X/109/1/012014>`_
      * `J. Bünger et al. <https://doi.org/10.1017/S1431927622000083>`_
      * `J. F. Ziegler et al. <https://doi.org/10.1007/978-3-642-68779-2_5>`_

**Symbols**:

  No symbol table

**Groups cited**:
  :ref:`NXdata`, :ref:`NXprocess`

.. index:: NXdata (base class); used in base class, NXprocess (base class); used in base class

**Structure**:

  .. _/NXem_interaction_volume/DATA-group:

  :bolditalic:`DATA`: (optional) :ref:`NXdata` :ref:`⤆ </NXobject/DATA-group>`


  .. _/NXem_interaction_volume/PROCESS-group:

  :bolditalic:`PROCESS`: (optional) :ref:`NXprocess` 



Hypertext Anchors
-----------------

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


* :ref:`/NXem_interaction_volume/DATA-group </NXem_interaction_volume/DATA-group>`
* :ref:`/NXem_interaction_volume/PROCESS-group </NXem_interaction_volume/PROCESS-group>`

**NXDL Source**:
  https://github.com/FAIRmat-NFDI/nexus_definitions/tree/fairmat/base_classes/NXem_interaction_volume.nxdl.xml