| 释义 |
Russell–Saunders Physics.|ˈrʌsəl ˈsɔːndəz|
[The names of Henry Norris Russell (1877–1957), U.S. astrophysicist, and Frederick Albert Saunders (1875–1963), U.S. physicist; they first described the scheme in Astrophys. Jrnl. (1925) LXI. 38.]
Russell–Saunders coupling, an approximation employed in a procedure for describing the possible energy states which can be adopted by a set of electrons in an atom; = LS-coupling (s.v. L II. 7); also Russell–Saunders scheme, Russell–Saunders state, etc.
[1927Zeitschr. f. Physik XL. 532 Im Russell–Saunderschen Schema.] 1928Physical Rev. XXXI. 957 In most spectra there is a different coupling of the quantum vectors, the Russell–Saunders coupling, which is responsible for normal multiplets. 1935Condon & Shortley Theory of Atomic Spectra vii. 208 The Russell–Saunders terms corresponding to the configurations sx and px. 1961Walker & Straw Spectroscopy i. i. 87 It will be assumed..that Russell–Saunders coupling applies to the individual momentum vectors associated with the electrons. 1962Cotton & Wilkinson Adv. Inorg. Chem. xxvi. 574 Just as the set of five d orbitals is split apart by the electrostatic field of surrounding ligands to give two or more sets of lower degeneracy, so also are the various Russell–Saunders states of a dn configuration. 1966D. H. Whiffen Spectroscopy xi. 141 Weak transitions disobeying these selection rules..are not at all uncommon and their existence implies that the Russell–Saunders scheme is not accurately applicable. 1967W. R. Hindmarsh Atomic Spectra iii. 27 The assumption of negligible spin-orbit interaction on which the Russell–Saunders coupling scheme is based. |