SI Units Used In “SpectroScopy”

Physical QuantityPhysical Quantity SymbolMathematical FormulaSI Unit of Physical Quantity
Total TermTT=E_{\text {tot }} / h c\mathrm{m}^{-1}
Transition Wavenumber\widetilde{\nu}\widetilde{\nu}=T^{\prime}-T^{\prime \prime}\mathrm{m}^{-1}
Transition Frequency\nu\nu=\left(E^{\prime}-E^{\prime \prime}\right) / h\mathrm{Hz}
Electronic TermT_{\mathrm{e}}T_{\mathrm{e}}=E_{\mathrm{e}} / h c\mathrm{m}^{-1}
Vibrational TermGG=E_{\mathrm{vib}} / h c\mathrm{m}^{-1}
Rotational TermFF=E_{\mathrm{rot}} / h c\mathrm{m}^{-1}
Spin-Orbit Coupling ConstantAT_{\mathrm{so}}=A<\widehat{\boldsymbol{L}} \cdot \widehat{\boldsymbol{S}}>\mathrm{m}^{-1}
Inertial Defect\Delta\Delta=I_{C}-I_{A}-I_{B}\mathrm{kg} \mathrm{m}^{2}
Electric Dipole Moment of a Molecule\boldsymbol{p}, \boldsymbol{\mu}E_{\mathrm{p}}=-\boldsymbol{p} \cdot \boldsymbol{E}\mathrm{C} \mathrm{m}
Transition Dipole Moment of a MoleculeM, R\boldsymbol{M}=\int \psi^{* \prime} \boldsymbol{p} \psi^{\prime \prime} \mathrm{d} \tau\mathrm{C} \mathrm{m}
Gyromagnetic Ratio\gamma\gamma=\mu / \hbar \sqrt{S(S+1)}\mathrm{s}^{-1} \mathrm{~T}^{-1}
Equilibrium Macroscopic Magnetisation per volumeM_{0}\mathrm{J} \mathrm{T}^{-1} \mathrm{~m}^{-3}
Nuclear Quadrupole Momente Q\mathrm{C} \mathrm{m}^{2}
Electric Field Gradientqq_{\alpha \beta}=-\partial^{2} V / \partial \alpha \partial \beta\mathrm{V} \mathrm{m}^{-2}
Nuclear Quadrupole Coupling Constant\chi\chi=e q_{z z} Q / h\mathrm{H}_{\mathrm{Z}}

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