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Large quadrupole deformation in ${}^{20}{Ne}$ challenges rotor model and modern theory

https://doi.org/10.1103/PhysRevC.111.054318

Mehl, C V; Orce, J N; Ngwetsheni, C; Marević, P; Brown, B A; Holt, J D; Kumar_Raju, M; Lawrie, E A; Abrahams, K J; Adsley, P; et al (May 2025, Physical Review C)

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First $β$ -Delayed Two-Neutron Spectroscopy of the $r$ -Process Nucleus ${}^{134}{In}$ and Observation of the $i_{13 / 2}$ Single-Particle Neutron State in ${}^{133}{Sn}$

https://doi.org/10.1103/l24v-5m31

Dyszel, P; Grzywacz, R; Xu, Z Y; Kitamura, N; Karny, M; Korgul, A; Madurga, M; Neupane, S; Algora, A; Andreyev, A N; et al (October 2025, Physical Review Letters)

This manuscript reports on the direct observation of a $β$ -delayed two-neutron emission in a study of ${}^{134}{In}$ at the ISOLDE Decay Station using neutron spectroscopy. We also report on the first measurement in $β^{-}$ decay of the long-sought $13 / 2^{+}$ excited state in ${}^{133}{Sn}$ , attributed to be the neutron single-particle $i_{13 / 2}$ orbital. The observation of sequential neutron emission is used to extract the relative population of the $i_{13 / 2}$ state, which was found to be much smaller than the predictions of the statistical model. The experiment was possible because of the innovative use of a neutron array with neutron discrimination and interaction tracking capabilities. This is the first study of the details of the two-neutron emission for a nucleus, which belongs to the $r$ -process path. Understanding $β$ -delayed two-neutron emission probabilities is essential to validate models used in astrophysical $r$ -process nucleosynthesis calculations. Observing two-neutron emissions in $β^{-}$ decay paves the way for new experiments to study energy and angular correlations for $β$ -delayed multineutron emitters.
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Decay spectroscopy of ${}^{160}{Eu}$ : Quasiparticle configurations of excited states and structure of $K^{π} = 4^{+}$ bandheads in ${}^{160}{Gd}$

https://doi.org/10.1103/PhysRevC.107.064309

Yates, D.; Krücken, R.; Dillmann, I.; Garrett, P. E.; Olaizola, B.; Vedia, V.; Ali, F. A.; Andreoiu, C.; Ashfield, W.; Ball, G. C.; et al (June 2023, Physical Review C)

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Reorientation-effect measurement of the $〈 2_{1}^{+} ∥ \hat{E} 2 ∥ 2_{1}^{+} 〉$ matrix element in ${}^{36}{Ar}$

https://doi.org/10.1103/PhysRevC.104.L061305

Orce, J. N.; Montes, E. J.; Abrahams, K. J.; Ngwetsheni, C.; Brown, B. A.; Raju, M. Kumar; Mehl, C. V.; Mokgolobotho, M. J.; Akakpo, E. H.; Mavela, D. L.; et al (December 2021, Physical Review C)

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Collective 2p-2h intruder states in ${}^{118}{Sn}$ studied via $β$ decay of ${}^{118}{In}$ using the GRIFFIN spectrometer at TRIUMF

https://doi.org/10.1103/PhysRevC.102.024323

Ortner, K.; Andreoiu, C.; Spieker, M.; Ball, G. C.; Bernier, N.; Bidaman, H.; Bildstein, V.; Bowry, M.; Cross, D. S.; Dunlop, M. R.; et al (August 2020, Physical Review C)
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Absence of Low-Energy Shape Coexistence in ${}^{80}{Ge}$ : The Nonobservation of a Proposed Excited $0_{2}^{+}$ Level at 639 keV

https://doi.org/10.1103/PhysRevLett.125.172501

Garcia, F. H.; Andreoiu, C.; Ball, G. C.; Bell, A.; Garnsworthy, A. B.; Nowacki, F.; Petrache, C. M.; Poves, A.; Whitmore, K.; Ali, F. A.; et al (October 2020, Physical Review Letters)
null (Ed.)
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Direct Observation of Proton Emission in ${}^{11}{Be}$

https://doi.org/10.1103/PhysRevLett.123.082501

Ayyad, Y.; Olaizola, B.; Mittig, W.; Potel, G.; Zelevinsky, V.; Horoi, M.; Beceiro-Novo, S.; Alcorta, M.; Andreoiu, C.; Ahn, T.; et al (August 2019, Physical Review Letters)

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Testing microscopically derived descriptions of nuclear collectivity: Coulomb excitation of 22 Mg

https://doi.org/10.1016/j.physletb.2018.05.064

Henderson, J.; Hackman, G.; Ruotsalainen, P.; Stroberg, S.R.; Launey, K.D.; Holt, J.D.; Ali, F.A.; Bernier, N.; Bentley, M.A.; Bowry, M.; et al (July 2018, Physics Letters B)

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Isospin symmetry in $B (E 2)$ values: Coulomb excitation study of ${}^{21}{Mg}$

https://doi.org/10.1103/PhysRevC.99.051301

Ruotsalainen, P.; Henderson, J.; Hackman, G.; Sargsyan, G. H.; Launey, K. D.; Saxena, A.; Srivastava, P. C.; Stroberg, S. R.; Grahn, T.; Pakarinen, J.; et al (May 2019, Physical Review C)

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Advances at TRIUMF-ISAC and decay of neutron-rich Cd studied with GRIFFIN

https://doi.org/10.1051/epjconf/201819304011

Garrett, P.E.; Bernier, N.; Dunlop, R.; MacLean, A.D.; Bildstein, V.; Dillmann, I.; Jungclaus, A.; Svensson, C.E.; Andreoiu, C.; Ball, G.C.; et al (January 2018, EPJ Web of Conferences)

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