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Calculation of nuclear spin-dependent parity-nonconserving amplitude for (7s,F=4) --> (7s,F=5) transition in Fr

S. G. Porsev, M. G. Kozlov

physics.atom-pharXiv:physics/0107016

Abstract

Many-body calculation of nuclear spin-dependent parity-nonconserving amplitude for (7s,F=4) --> (7s,F=5) transition between hyperfine sublevels of the ground state of 211Fr is carried out. The final result is <7s,F=5 ||dPNC|| 7s,F=4> = -0.49 10-10 i kappa a.u., where kappa is the dimensionless coupling constant. This is approximately an order of magnitude larger than similar amplitude in Cs. The dominant contribution to kappa is associated with the anapole moment of the nucleus.

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