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+and13/2+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 i13/2proton to the 2p- 2h intruder excitation.
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.
出处
《原子核物理评论》
CAS
CSCD
北大核心
2016年第2期141-145,共5页
Nuclear Physics Review
基金
Academy of Finland under the Finnish Center of Excellence Programmes(2006-2011,2012-2017)
EURONS(European Comissiom)(RII3-CT-2004-506065)
EU 7th Framework Programme(262010)(ENSAR)
