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Long‐range dispersion interactions involving excited atoms; The H(1 s )–H(2 s ) interaction
Author(s) -
Deal Walter J.,
Young Ralph H.
Publication year - 1973
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560070505
Subject(s) - excited state , atomic physics , atom (system on chip) , dispersion (optics) , chemistry , hydrogen atom , london dispersion force , range (aeronautics) , molecule , molecular physics , physics , van der waals force , quantum mechanics , materials science , group (periodic table) , organic chemistry , computer science , composite material , embedded system
The dispersion interaction between two nonoverlapping atoms (or molecules) is expressed in terms of single‐atom “polarizabilities.” The formulation is valid even if one atom (or both) is in an excited state. To illustrate the procedure, the dispersion interaction between a 1 s and a 2 s hydrogen atom is computed accurately through order R −10 ( R = internuclear separation).