Reduction in nuclear size and quadrupole deformation of high-spin isomers of 127,129In
Reduction in nuclear size and quadrupole deformation of high-spin isomers of 127,129In
We employed laser spectroscopy of atomic transitions to measure the nuclear charge radii and electromagnetic properties of the high-spin isomeric states in neutron-rich indium isotopes (Z = 49) near the closed proton and neutron shells at Z = 50 and N = 82. Our data reveal a reduction in the nuclear charge radius and intrinsic quadrupole moment when protons and neutrons are fully aligned in 129In(N = 80), to form the high spin isomer. Such a reduction is not observed in 127In(N = 78), where more complex configurations can be formed by the existence of four neutron-holes. These observations are not consistently described by nuclear theory.
A. R. Vernon、C. L. Binnersley、R. F. Garcia Ruiz、K. M. Lynch、T. Miyagi、J. Billowes、M. L. Bissell、T. E. Cocolios、J. P. Delaroche、J. Dobaczewski、M. Dupuis、K. T. Flanagan、W. Gins、M. Girod、G. Georgiev、R. P. de Groote、J. D. Holt、J. Hustings、á. Koszorús、D. Leimbach、J. Libert、W. Nazarewicz、G. Neyens、N. Pillet、P. -G. Reinhard、S. Rothe、B. K. Sahoo、S. R. Stroberg、S. G. Wilkins、X. F. Yang、Z. Y. Xu、D. T. Yordanov
原子能技术基础理论
A. R. Vernon,C. L. Binnersley,R. F. Garcia Ruiz,K. M. Lynch,T. Miyagi,J. Billowes,M. L. Bissell,T. E. Cocolios,J. P. Delaroche,J. Dobaczewski,M. Dupuis,K. T. Flanagan,W. Gins,M. Girod,G. Georgiev,R. P. de Groote,J. D. Holt,J. Hustings,á. Koszorús,D. Leimbach,J. Libert,W. Nazarewicz,G. Neyens,N. Pillet,P. -G. Reinhard,S. Rothe,B. K. Sahoo,S. R. Stroberg,S. G. Wilkins,X. F. Yang,Z. Y. Xu,D. T. Yordanov.Reduction in nuclear size and quadrupole deformation of high-spin isomers of 127,129In[EB/OL].(2025-05-20)[2025-06-07].https://arxiv.org/abs/2505.14977.点此复制
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