Card 8: Nuclide yield file specifications
-----------------------------------------

.. _`param:inmtcf`:

.. rst-class:: no-caption-number

.. list-table:: **INMTCF** :phits-same:`PHITS: same name`
   :header-rows: 0

   * - Value
     - Description
   * - (D=1, ``INMTCF``\ :math:`\leq`\ 10)
     - Number of nuclide yield files. If using [T-Dchain] to generate this input deck, this option should be automatically set to 1.
   * - :math:`>` 1
     - Files listed in ``HHNMTCF`` repeated with ``FFNMTCF`` for ``INMTCF`` times
   * - = 1
     - Single yield file whose name is provided to ``HHNMTCF``.
   * - = 0
     - No yield file (used for standalone calculations without PHITS)

.. _`param:ffnmtcf`:

.. rst-class:: no-caption-number

.. list-table:: **FFNMTCF** :phits-not-settable:`PHITS: not settable`
   :header-rows: 0

   * - Value
     - Description
   * -
     - Normalization factor for regionwise nuclide yield file(s). If ``INMTCF``\ :math:`>`\ 1, this entry and ``HHNMTCF`` must be repeated ``INMTCF`` times. Input decks generated by [T-Dchain] should have this automatically commented out.

.. _`param:hhnmtcf`:

.. rst-class:: no-caption-number

.. list-table:: **HHNMTCF** :phits-not-settable:`PHITS: not settable`
   :header-rows: 0

   * - Value
     - Description
   * -
     - File name (string) of the nuclide yield file.

.. _`param:itdchout`:

.. rst-class:: no-caption-number

.. list-table:: **ITDCHOUT** :phits-not-settable:`PHITS: not settable`
   :header-rows: 0

   * - Value
     - Description
   * - (D=0, D\ :sub:`P`\ =1)
     - Flag indicating if nuclide yield output is from [T-Dchain].
   * - = 0
     - Yield file is coming from a legacy source / using a legacy format.
   * - = 1
     - Yield file was produced by the PHITS [T-Dchain] tally.

.. _`param:iertdcho`:

.. rst-class:: no-caption-number

.. list-table:: **IERTDCHO** :phits-same:`PHITS: same name`
   :header-rows: 0

   * - Value
     - Description
   * - (D=0, D\ :sub:`P`\ =1, requires ``IDCHOUT``\ =1)
     - Flag specifying if statistical uncertainties from the [T-Dchain] tally’s nuclide yield (\*.dyld) and neutron flux spectra (\*.dtrk) outputs should be propagated to the final results. Note that this changes the formatting of the \*.act output file with newly added columns for uncertainty and error bars added to the ANGEL plots.
   * - = 0
     - No uncertainty reading/propagation.
   * - = 1
     - Yield and neutron flux statistical uncertainties are read from their files and propagated through the DCHAIN calculations.

.. _`param:henmtcf`:

.. rst-class:: no-caption-number

.. list-table:: **HENMTCF** :phits-not-settable:`PHITS: not settable`
   :header-rows: 0

   * - Value
     - Description
   * -
     - File name (string) of the nuclide yield uncertainty file. This can only be provided if ``ITDCHOUT``\ =1. If ``ITDCHOUT`` is not 1, please remove or comment out this entry; otherwise, DCHAIN will halt its calculation to alert the user that this mismatch has occurred. (Only actually used when ``IERTDCHO``\ =1 and ``IREDUFMT``\ =0; ignored otherwise.)

**Card 8b: Nuclide yield and neutron flux file special options**

.. _`param:iredufmt`:

.. rst-class:: no-caption-number

.. list-table:: **IREDUFMT** :phits-same:`PHITS: same name`
   :header-rows: 0

   * - Value
     - Description
   * - (D=0, D\ :sub:`P`\ =1)
     - Flag which tells DCHAIN if it is receiving neutron flux and yield output from [T-Dchain] in the original full or new reduced format.
   * - = 0
     - Files use original full T-Track ``axis = eng`` and T-Yield formats.
   * - = 1
     - Files use new reduced T-Track ``axis = dchain`` / T-Yield formats.

.. _`param:irdonce`:

.. rst-class:: no-caption-number

.. list-table:: **IRDONCE** :phits-same:`PHITS: same name`
   :header-rows: 0

   * - Value
     - Description
   * - (D=0, D\ :sub:`P`\ =1)
     - Controls if flux and yield files are reopened in each region.
   * - = 0
     - Files are closed, reopened, and reread in each region.
   * - = 1
     - Files only opened and read once unless ``HNFLUXS`` changes between regions or, for yield files, if ``IREDUFMT``\ =0, speeding up simulations.