Microscopic quasiparticle-phonon model and its application
In this work a microscopic three-step model for the excitations of an odd-A nucleus is presented. The model, Microscopic Quasiparticle Phonon Model (MQPM) constructs the excited states of an odd-A nucleus by coupling BCS quasiparticles and eigenmodes (QRPA phonons) of the nearby even-A nucleus toget...
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| Format: | Doctoral dissertation |
| Language: | eng |
| Published: |
1998
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| Online Access: | https://jyx.jyu.fi/handle/123456789/103975 |
| Summary: | In this work a microscopic three-step model for the excitations of an odd-A nucleus is presented. The model, Microscopic Quasiparticle Phonon Model (MQPM) constructs the excited states of an odd-A nucleus by coupling BCS quasiparticles and eigenmodes (QRPA phonons) of the nearby even-A nucleus together. A detailed derivation of the most complicated parts of the MQPM equations of motion is presented. The reduced matrix elements of charge-changing transition densities, needed in beta-decay calculations, are presented. The MQPM is applied to various nuclei and the resulting state energies and comparative beta-decay half-lives (log ft values) are compared with experiments. The predictive power of the MQPM is discussed.
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