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-rw-r--r--Docs/source/usage/parameters.rst1
1 files changed, 1 insertions, 0 deletions
diff --git a/Docs/source/usage/parameters.rst b/Docs/source/usage/parameters.rst
index 87c2ca16f..6522d1b72 100644
--- a/Docs/source/usage/parameters.rst
+++ b/Docs/source/usage/parameters.rst
@@ -717,6 +717,7 @@ Particle initialization
``<species_name>.charge`` (`double`) optional (default is read from openPMD file) when set this will be the charge of the physical particle represented by the injected macroparticles.
``<species_name>.mass`` (`double`) optional (default is read from openPMD file) when set this will be the charge of the physical particle represented by the injected macroparticles.
``<species_name>.z_shift`` (`double`) optional (default is no shift) when set this value will be added to the longitudinal, ``z``, position of the particles.
+ ``<species_name>.impose_t_lab_from_file`` (`bool`) optional (default is false) only read if warpx.gamma_boost > 1., it allows to set t_lab for the Lorentz Transform as being the time stored in the openPMD file.
Warning: ``q_tot!=0`` is not supported with the ``external_file`` injection style. If a value is provided, it is ignored and no re-scaling is done.
The external file must include the species ``openPMD::Record`` labeled ``position`` and ``momentum`` (`double` arrays), with dimensionality and units set via ``openPMD::setUnitDimension`` and ``setUnitSI``.
If the external file also contains ``openPMD::Records`` for ``mass`` and ``charge`` (constant `double` scalars) then the species will use these, unless overwritten in the input file (see ``<species_name>.mass``, ``<species_name>.charge`` or ``<species_name>.species_type``).