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1. Direct Measurement of Hexacontatetrapole, $E6$ $\gamma$ Decay from ${}^{53m}\mathrm{Fe}$

   https://doi.org/10.1103/PhysRevLett.130.122503  

   Palazzo, T.; Mitchell, A. J.; Lane, G. J.; Stuchbery, A. E.; Brown, B. A.; Reed, M. W.; Akber, A.; Coombes, B. J.; Dowie, J. T. H.; Eriksen, T. K.; et al (March 2023, Physical Review Letters)
2. Key ${}^{19}\mathrm{Ne}$ States Identified Affecting $\gamma$ -Ray Emission from ${}^{18}\mathrm{F}$ in Novae

   https://doi.org/10.1103/PhysRevLett.122.052701  

   Hall, M. R.; Bardayan, D. W.; Baugher, T.; Lepailleur, A.; Pain, S. D.; Ratkiewicz, A.; Ahn, S.; Allen, J. M.; Anderson, J. T.; Ayangeakaa, A. D.; et al (February 2019, Physical Review Letters)
3. First $\beta$ -Delayed Two-Neutron Spectroscopy of the $r$ -Process Nucleus ${}^{134}\mathrm{In}$ and Observation of the $i_{13/2}$ Single-Particle Neutron State in ${}^{133}\mathrm{Sn}$

   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 $\beta$-delayed two-neutron emission in a study of ${}^{134}\mathrm{In}$at the ISOLDE Decay Station using neutron spectroscopy. We also report on the first measurement in ${\beta }^{-}$decay of the long-sought $13/2^{+}$excited state in ${}^{133}\mathrm{Sn}$, 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 $\beta$-delayed two-neutron emission probabilities is essential to validate models used in astrophysical $r$-process nucleosynthesis calculations. Observing two-neutron emissions in ${\beta }^{-}$decay paves the way for new experiments to study energy and angular correlations for $\beta$-delayed multineutron emitters. 

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4. Magic Nature of Neutrons in ${}^{54}\mathrm{Ca}$ : First Mass Measurements of ${}^{55–57}\mathrm{Ca}$

   https://doi.org/10.1103/PhysRevLett.121.022506  

   Michimasa, S.; Kobayashi, M.; Kiyokawa, Y.; Ota, S.; Ahn, D. S.; Baba, H.; Berg, G. P.; Dozono, M.; Fukuda, N.; Furuno, T.; et al (July 2018, Physical Review Letters)
5. Optically polarized ${}^3\mathrm{He}$

   https://doi.org/10.1103/RevModPhys.89.045004  

   Gentile, T. R.; Nacher, P. J.; Saam, B.; Walker, T. G. (December 2017, Reviews of Modern Physics)