Reduction in Nuclear Size and Quadrupole Deformation of High-Spin Isomers of ^{127,129}In

Vernon AR, Binnersley CL, Ruiz RF, Lynch KM, Miyagi T, Billowes J, Bissell ML, Cocolios TE, Delaroche JP, Dobaczewski J, Dupuis M, Flanagan KT, Gins W, Girod M, Georgiev G, de Groote RP, Holt JD, Hustings J, Koszorús , Leimbach D, Libert J, Nazarewicz W, Neyens G, Pillet N, Reinhard PG, Rothe S, Sahoo BK, Stroberg SR, Wilkins SG, Yang XF, Xu ZY, Yordanov DT (2025)


Publication Type: Journal article

Publication year: 2025

Journal

Book Volume: 134

Pages Range: 252501-

Journal Issue: 25

DOI: 10.1103/m35x-mw7z

Abstract

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 ^{129}In(N=80), to form the high spin isomer. Such a reduction is not observed in ^{127}In(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.

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APA:

Vernon, A.R., Binnersley, C.L., Ruiz, R.F., Lynch, K.M., Miyagi, T., Billowes, J.,... Yordanov, D.T. (2025). Reduction in Nuclear Size and Quadrupole Deformation of High-Spin Isomers of ^{127,129}In. Physical Review Letters, 134(25), 252501-. https://doi.org/10.1103/m35x-mw7z

MLA:

Vernon, A. R., et al. "Reduction in Nuclear Size and Quadrupole Deformation of High-Spin Isomers of ^{127,129}In." Physical Review Letters 134.25 (2025): 252501-.

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