Spectroscopy of Low-lying States in Odd-Z Odd-A Nuclei Beyond Lead
doi: 10.11804/NuclPhysRev.33.02.141
Spectroscopy of Low-lying States in Odd-Z Odd-A Nuclei Beyond Lead
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摘要: Low-lying states in odd-Z odd-mass nuclei at the proton drip-line beyond lead have recently been studied through fusion-evaporation reactions using a gas-filled recoil separator. Isomeric 1/2+ and 13/2+ states have been observed in odd-mass astatine and francium nuclei. The systematic behaviour of the level energies of these states have been studied and a similarity between the 1/2+ state in astatine and francium has been found. Furthermore, the 13/2+ state has been observed in the francium nuclei with an oblate behaviour suggesting a coupling of the i13/2 proton to the 2p-2h intruder excitation.
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关键词:
- nuclear spectroscopy /
- isomeric states /
- Z > /
- 82
Abstract: Low-lying states in odd-Z odd-mass nuclei at the proton drip-line beyond lead have recently been studied through fusion-evaporation reactions using a gas-filled recoil separator. Isomeric 1/2+ and 13/2+ states have been observed in odd-mass astatine and francium nuclei. The systematic behaviour of the level energies of these states have been studied and a similarity between the 1/2+ state in astatine and francium has been found. Furthermore, the 13/2+ state has been observed in the francium nuclei with an oblate behaviour suggesting a coupling of the i13/2 proton to the 2p-2h intruder excitation.-
Key words:
- nuclear spectroscopy /
- isomeric states /
- Z > /
- 82
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