Isotopic dilution study

[Eric Shamay]

Hello cp2k users,

I am starting a study that requires the use of deuterium to make D2O
instead of water in my aqueous phase. I'd like to specify certain
atoms to use the normal hydrogen definitions (with a mass of 1.0), and
other atoms to have the same but with mass=2.0. For instance, I wish
to model nitric acid, and keep the acid proton as a hydrogen, but
change all the waters around it to D2O.

Does anyone know of how I would specify this in my input file for
cp2k? Is this possible to do?

Thanks,
~Eric