constants

UnitsDatabase

This database contains factors to covert between Bohr and Angstroms. And some other physical constants:

  • BOHR_TO_ANGSTROM = 0.52917721092

  • ANGSTROM_TO_BOHR = 1.889725989

  • ELECTRON_CHARGE = -1.0

  • ELECTRON_MASS = 1.0

  • PROTON_CHARGE = 1.0

  • PROTON_MASS = 1836.15267247

  • NEUTRON_CHARGE = 0.0

  • NEUTRON_MASS = 1838.6836605

  • SPIN_UP_ELECTRON = 0.5

  • SPIN_DOWN_ELECTRON = -0.5

  • SPIN_ELECTRON = 0.5

  • SPIN_FERMION = 0.5

  • SPIN_BOSON = 1.0