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Theoretical description of deformed proton emitters: nonadiabatic coupled-channel method

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arxiv nucl-th/0007044 v1 pith:QVC2JFJO submitted 2000-07-18 nucl-th

classification nucl-th
keywords methodprotoncoupled-channelcouplingnonadiabaticableadiabaticadopting
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The newly developed nonadiabatic method based on the coupled-channel Schroedinger equation with Gamow states is used to study the phenomenon of proton radioactivity. The new method, adopting the weak coupling regime of the particle-plus-rotor model, allows for the inclusion of excitations in the daughter nucleus. This can lead to rather different predictions for lifetimes and branching ratios as compared to the standard adiabatic approximation corresponding to the strong coupling scheme. Calculations are performed for several experimentally seen, non-spherical nuclei beyond the proton dripline. By comparing theory and experiment, we are able to characterize the angular momentum content of the observed narrow resonance.

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