For example, the unit of mass in atomic units is the mass of an electron, while the unit of mass in Planck units is the Planck mass, a mass so large that if a single particle had that much mass it might collapse into a black hole.
32.
And is the operator for the-component of angular momentum : " i " . } } The perturbation can be seen as the strength of the applied electric field multiplied by one of the space coordinates ( This calculation is in atomic units, so that every quantity is dimensionless ).
33.
The wave function of atomic hydrogen in a high frequency, ultra-high intensity laser field, represented in a plane passing through the symmetry axis of the laser field; "'? 0 = I 1 / 2 ? " 2 "', where "'I "'is the laser field intensity, and "'? "'is its frequency in atomic units.
34.
The wave function of atomic hydrogen in a high frequency, ultra-high intensity laser field, represented in a plane passing through the symmetry axis of the laser field . "'? 0 = I 1 / 2 ? " 2 "', where "'I "'is the laser field intensity, and "'? "'is its frequency in atomic units.
35.
Although the Bohr model is no longer in use, the Bohr radius remains very useful in atomic physics calculations, due in part to its simple relationship with other fundamental constants . ( This is why it is defined using the true electron mass rather than the reduced mass, as mentioned above . ) For example, it is the unit of length in atomic units.
