rotational quantum number

rotational quantum number

[rō′tā·shən·əl ′kwän·təm ‚nəm·bər]
(physical chemistry)
A quantum number J characterizing the angular momentum associated with the motion of the nuclei of a molecule; the angular momentum is (h/ 2π) √(J (J +1)) and the largest component is (h /2π) J, where h is Planck's constant.
References in periodicals archive ?
In accordance with current standard notation in spectral analysis, here we use exclusively symbols J for rotational quantum number and v for vibrational quantum number, regardless of the symbols employed in the original sources.
In addition, it is labeled with the vibrational quantum number v and rotational quantum number J', where J' = F' - I and I is the total nuclear spin angular momentum quantum number (13).