| 释义 |
Franck–Condon, n. Physical Chem.|fræŋk ˈkɒndən|
The names of James Franck (1882–1964), German-born U.S. physicist, and Edward U. Condon (1902–74), U.S. physicist, used attrib. (esp. in Franck–Condon principle, Franck–Condon factor) with reference to the principle that the configuration of nuclei in a molecule remains unchanged during an electronic transition.
1928Proc. Nat. Acad. Sci. XIV. 870 Applying the Franck–Condon principle here again we see that such a continuous spectrum could not originate. 1936Jrnl. Chem. Physics IV. 196/1 Even with the aid of the Franck–Condon assumption one must have information about the vibrational wave functions in order to calculate transition probabilities. 1952Monthly Notices R. Astron. Soc. CXII. 614 The important dimensionless quantity p(v′, v{pp})2 does not seem to have been assigned any convenient name. Because of its connection with the Franck–Condon principle we will refer to it as the Franck–Condon factor of the particular band concerned. 1968Jrnl. Chem. Physics XLIX. 460/2 In the nonadiabatic Born–Oppenheimer approach we have already noted that β and ν must be both even or both odd. This is the standard rule when there is a Franck–Condon factor corresponding to a nonsymmetrical vibration. 1977Nature 14 Apr. 661/2 The book also contains a brief account of the theory of band intensities, lifetimes and the Franck–Condon envelope. |