ΔS=±1 Magnetic Quadrupole Radiative Transitions in Atoms and Molecules

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概要

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• The probabiliy of the spontaneous transition n_1→n_2 through the magnetic quadrupole moment Q_<2m>^(mg) is P_<2m>^(mg)(n_1→n_2) =(60πhε_0)^<-1>ω^5|(n_1|Q_<2m>^(mg)|n_2)|^2・Q_<2m>^(mg) is a tensor operator of order 2, and Q_<20>^(mg)=(e/μ) Σ__i [3z_is_<xi>-r_i・s_i+z_il_<zi>-(r_i・l_i/3)], where ε_0 is the capacitivity of the vacuum, e and μ are electron charge and mass, respectively, r_i, s_i, and l_i are coordinate, spin, and orbital angular momenta, respectively, of i-th electron. When the total spin S is a good quantum number the magnetic quadrupole moment can produce ΔS=±1 radiative transitions. Selection rules are J+J'≧2≧|J-J'|, L+L'≧1≧|L-L'|, and parity change. In many cases the resulting transition probability competes with that by spin-orbit electric dipole moment. Numerical values of these transition probabilities are calculated for many atoms, ions, and molecules using simple wave functions. In atoms P_2^(mg) is about 10^<-3> sec^<-1>. In ions and molecules it is larger.

• 社団法人日本物理学会の論文
• 1966-11-05

著者

• Mizushima Masataka

  Department Of Physics And Astrophysics University Of Colorado Boulder

• Mizushima Masataka

  Department Of Physics And Astrophysics University Of Colorado

• Mizushima M.

  Department of Physics and Astrophysics, University of Colorado, Boulder

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