Regularity of core coupled high-spin structure in neutron-rich ^196−202Au isotopes approaching N =126

@misc{cho2026regularity,
  title = {{Regularity of core coupled high-spin structure in neutron-rich $^196-202$Au isotopes approaching N $=126$}},
  author = {Y. Cho and Y. H. Kim and A. Navin and M. Rejmund and A. Lemasson and D. Ramos and E. Clément and J. Dudouet and P. Van Isacker and C. Yuan and M. Liu and A. N. Andreyev and Y. Son and S. Choi and D. Ackermann and G. de Angelis and S. Bae and R. Banik and S. Bhattacharya and S. Bhattacharyya and K. Chae and F. Didierjean and C. Fougères and G. de France and G. Fremont and J. Goupil and G. M. Gu and J. Ha and K. I. Hahn and Y. Hirayama and S. C. Jeong and D. T. Kattikat Melcom and C. H. Kim and M. J. Kim and S. H. Kim and W. Korten and P. Marini and H. Miyatake and M. Mukai and A. Mukherjee and G. Mukherjee and T. Niwase and T. Otsuka and J. Park and R. M. Pérez-Vidal and F. Recchia and K. Rezynkina and P. Schury and J. C. Thomas and I. Tsekhanovich and A. Utepov and Y. X. Watanabe},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2611.03139},
  eprint = {2611.03139},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2611.03139},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - Regularity of core coupled high-spin structure in neutron-rich ^196−202Au isotopes approaching N =126
AU  - Y. Cho
AU  - Y. H. Kim
AU  - A. Navin
AU  - M. Rejmund
AU  - A. Lemasson
AU  - D. Ramos
AU  - E. Clément
AU  - J. Dudouet
AU  - P. {Van Isacker}
AU  - C. Yuan
AU  - M. Liu
AU  - A. N. Andreyev
AU  - Y. Son
AU  - S. Choi
AU  - D. Ackermann
AU  - G. {de Angelis}
AU  - S. Bae
AU  - R. Banik
AU  - S. Bhattacharya
AU  - S. Bhattacharyya
AU  - K. Chae
AU  - F. Didierjean
AU  - C. Fougères
AU  - G. {de France}
AU  - G. Fremont
AU  - J. Goupil
AU  - G. M. Gu
AU  - J. Ha
AU  - K. I. Hahn
AU  - Y. Hirayama
AU  - S. C. Jeong
AU  - D. T. {Kattikat Melcom}
AU  - C. H. Kim
AU  - M. J. Kim
AU  - S. H. Kim
AU  - W. Korten
AU  - P. Marini
AU  - H. Miyatake
AU  - M. Mukai
AU  - A. Mukherjee
AU  - G. Mukherjee
AU  - T. Niwase
AU  - T. Otsuka
AU  - J. Park
AU  - R. M. Pérez-Vidal
AU  - F. Recchia
AU  - K. Rezynkina
AU  - P. Schury
AU  - J. C. Thomas
AU  - I. Tsekhanovich
AU  - A. Utepov
AU  - Y. X. Watanabe
PY  - 2026
DA  - 2026/11/02
PB  - arXiv
DO  - 10.48550/arxiv.2611.03139
UR  - https://arxiv.org/abs/2611.03139
AB  - Excited states built upon long-lived high-spin isomers in hard-to-reach neutron-rich Au (Z=79) isotopes were populated using multi-nucleon transfer reactions between ^136Xe and ^198Pt at 7 MeV/u. These states in ^196, 198−202Au were identified for the first time using the powerful combination of the VAMOS++ spectrometer, the CATLIFE detection system, and the AGATA γ-ray tracking array. Their measured energies exhibit remarkable regularity as a function of neutron number and are seen to be inherited from the energies of yrast-band members in the corresponding Hg (Z=80) isotope. Large-scale shell-model calculations reproduce the observed regularity and show that these states arise from the unique-parity orbitals π0h_11/2 and ν0i_13/2 coupled to the Hg core. This regularity is due to the dominant proton configurations of the Hg and Au isotopes, where the level energies are almost independent of different neutron-orbital occupancies. The calculated Au wave functions show significant higher-spin components of the corresponding Hg core, unlike what is expected in the conventional interpretation in terms of the weak-coupling/decoupling limits of the particle-core coupling model.
ER  -