Study of unbound excited states in ^50,52Ar and the shell closures at N = 32 and N = 34

@article{begala2026study,
  title = {{Study of unbound excited states in $^50,52$Ar and the shell closures at $N$ = 32 and $N$ = 34}},
  author = {M Begala and D Sohler and Z Elekes and M.M Juhász and Y Utsuno and K Yoshida and T Otsuka and K Ogata and P Doornenbal and A Obertelli and H Baba and F Browne and D Calvet and F Château and S Chen and N Chiga and A Corsi and M.L Cortés and A Delbart and J-M Gheller and A Giganon and A Gillibert and C Hilaire and T Isobe and T Kobayashi and Y Kubota and V Lapoux and T Motobayashi and I Murray and H Otsu and V Panin and N Paul and W Rodriguez and H Sakurai and M Sasano and D Steppenbeck and L Stuhl and Y.L Sun and Y Togano and T Uesaka and K Wimmer and K Yoneda and N.L Achouri and O Aktas and T Aumann and L.X Chung and F Flavigny and S Franchoo and I Gašparić and R-B Gerst and J Gibelin and K.I Hahn and D Kim and T Koiwai and Y Kondo and P Koseoglou and J Lee and C Lehr and B.D Linh and H.N Liu},
  journal = {Journal of Physics G: Nuclear and Particle Physics},
  year = {2026},
  month = jul,
  doi = {10.1088/1361-6471/ae7fa3},
  url = {https://hal.science/hal-05699177v1},
  note = {CC BY 4.0},
}

TY  - JOUR
TI  - Study of unbound excited states in ^50,52Ar and the shell closures at N = 32 and N = 34
AU  - M Begala
AU  - D Sohler
AU  - Z Elekes
AU  - M.M Juhász
AU  - Y Utsuno
AU  - K Yoshida
AU  - T Otsuka
AU  - K Ogata
AU  - P Doornenbal
AU  - A Obertelli
AU  - H Baba
AU  - F Browne
AU  - D Calvet
AU  - F Château
AU  - S Chen
AU  - N Chiga
AU  - A Corsi
AU  - M.L Cortés
AU  - A Delbart
AU  - J-M Gheller
AU  - A Giganon
AU  - A Gillibert
AU  - C Hilaire
AU  - T Isobe
AU  - T Kobayashi
AU  - Y Kubota
AU  - V Lapoux
AU  - T Motobayashi
AU  - I Murray
AU  - H Otsu
AU  - V Panin
AU  - N Paul
AU  - W Rodriguez
AU  - H Sakurai
AU  - M Sasano
AU  - D Steppenbeck
AU  - L Stuhl
AU  - Y.L Sun
AU  - Y Togano
AU  - T Uesaka
AU  - K Wimmer
AU  - K Yoneda
AU  - N.L Achouri
AU  - O Aktas
AU  - T Aumann
AU  - L.X Chung
AU  - F Flavigny
AU  - S Franchoo
AU  - I Gašparić
AU  - R-B Gerst
AU  - J Gibelin
AU  - K.I Hahn
AU  - D Kim
AU  - T Koiwai
AU  - Y Kondo
AU  - P Koseoglou
AU  - J Lee
AU  - C Lehr
AU  - B.D Linh
AU  - H.N Liu
PY  - 2026
DA  - 2026/07/13
JO  - Journal of Physics G: Nuclear and Particle Physics
DO  - 10.1088/1361-6471/ae7fa3
UR  - https://hal.science/hal-05699177v1
AB  - Neutron-unbound states in ^50Ar and ^52Ar were investigated via the (p,2p) proton-knockout reaction using the invariant-mass spectroscopy technique. Two (^50Ar) and three (^52Ar) distinct, narrow resonances were observed in the vicinity of the neutron separation energy. Based on a comparison with theoretical level schemes and calculated (p,2p) cross sections, tentative spin-parity assignments have been proposed. The good degree of consistency between the predicted level structures and the observed states indicates that the large N = 32 and N = 34 shell gaps inherent in the theoretical calculations accurately describe the nuclear structure in this region. These results provide further support for the robustness of these subshell closures in the neutron-rich argon isotopes.
SN  - 0954-3899
SN  - 1361-6471
ER  -