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Refined Topology of the $N = 20$ Island of Inversion with High Precision Mass Measurements of ${}^{31 - 33}{Na}$ and ${}^{31 - 35}{Mg}$

https://doi.org/10.1103/PhysRevLett.134.052503

Lykiardopoulou, E M; Walls, C; Bergmann, J; Brodeur, M; Brown, C; Cardona, J; Czihaly, A; Dickel, T; Duguet, T; Ebran, J-P; et al (February 2025, Physical Review Letters)

Free, publicly-accessible full text available February 1, 2026
Overcoming photobleaching in imaging of single barium atoms in a solid xenon matrix

https://doi.org/10.1103/PhysRevResearch.6.043193

Yvaine, M; Fairbank, D; Soderstrom, J; Taylor, C; Stanley, J; Walton, T; Chambers, C; Iverson, A; Fairbank, W; Al_Kharusi, S; et al (November 2024, Physical Review Research)

Neutrinoless double beta decay is one of the most sensitive probes for new physics beyond the Standard Model of particle physics. One of the isotopes under investigation is ${}^{136}{Xe}$ , which would double beta decay into ${}^{136}{Ba}$ . Detecting the single ${}^{136}{Ba}$ daughter provides a sort of ultimate tool in the discrimination against backgrounds. Previous work demonstrated the ability to perform single atom imaging of Ba atoms in a single-vacancy site of a solid xenon matrix. In this paper, the effort to identify signal from individual barium atoms is extended to Ba atoms in a hexa-vacancy site in the matrix and is achieved despite increased photobleaching in this site. Abrupt fluorescence turn-off of a single Ba atom is also observed. Significant recovery of fluorescence signal lost through photobleaching is demonstrated upon annealing of Ba deposits in the Xe ice. Following annealing, it is observed that Ba atoms in the hexa-vacancy site exhibit antibleaching while Ba atoms in the tetra-vacancy site exhibit bleaching. This may be evidence for a matrix site transfer upon laser excitation. Our findings offer a path of continued research toward tagging of Ba daughters in all significant sites in solid xenon. Published by the American Physical Society2024
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Free, publicly-accessible full text available November 1, 2025
Investigating nuclear structure near $N = 32 and N = 34 :$ Precision mass measurements of neutron-rich Ca, Ti, and V isotopes

https://doi.org/10.1103/PhysRevC.106.024312

Porter, W. S.; Dunling, E.; Leistenschneider, E.; Bergmann, J.; Bollen, G.; Dickel, T.; Dietrich, K. A.; Hamaker, A.; Hockenbery, Z.; Izzo, C.; et al (August 2022, Physical Review C)

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Mass measurements of ${}^{60 – 63}{Ga}$ reduce x-ray burst model uncertainties and extend the evaluated $T = 1$ isobaric multiplet mass equation

https://doi.org/10.1103/PhysRevC.104.065803

Paul, S. F.; Bergmann, J.; Cardona, J. D.; Dietrich, K. A.; Dunling, E.; Hockenbery, Z.; Hornung, C.; Izzo, C.; Jacobs, A.; Javaji, A.; et al (December 2021, Physical Review C)
Examining the nuclear mass surface of Rb and Sr isotopes in the $A \approx 104$ region via precision mass measurements

https://doi.org/10.1103/PhysRevC.103.044320

Mukul, I.; Andreoiu, C.; Bergmann, J.; Brodeur, M.; Brunner, T.; Dietrich, K. A.; Dickel, T.; Dillmann, I.; Dunling, E.; Fusco, D.; et al (April 2021, Physical Review C)
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Precision Mass Measurements of Neutron-Rich Scandium Isotopes Refine the Evolution of $N = 32$ and $N = 34$ Shell Closures

https://doi.org/10.1103/PhysRevLett.126.042501

Leistenschneider, E.; Dunling, E.; Bollen, G.; Brown, B. A.; Dilling, J.; Hamaker, A.; Holt, J. D.; Jacobs, A.; Kwiatkowski, A. A.; Miyagi, T.; et al (January 2021, Physical Review Letters)
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Measuring the half-life of n-rich ¹⁰⁰ Rb with the TITAN MR-TOF-MS

https://doi.org/10.1088/1742-6596/1643/1/012057

Mukul, I.; Andreoiu, C.; Brodeur, M.; Brunner, T.; Dietrich, K.; Dickel, T.; Dillmann, I.; Dunling, E.; Fusco, D.; Gwinner, G.; et al (December 2020, Journal of Physics: Conference Series)
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Mass measurements of neutron-rich gallium isotopes refine production of nuclei of the first $r$ -process abundance peak in neutron-star merger calculations

https://doi.org/10.1103/PhysRevC.101.025803

Reiter, M. P.; Ayet San Andrés, S.; Nikas, S.; Lippuner, J.; Andreoiu, C.; Babcock, C.; Barquest, B. R.; Bollig, J.; Brunner, T.; Dickel, T.; et al (February 2020, Physical Review C)

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High-precision $Q_{EC}$ -value measurement of the superallowed $β^{+}$ emitter ${}^{22}{Mg}$ and an ab initio evaluation of the $A = 22$ isobaric triplet

https://doi.org/10.1103/PhysRevC.96.052501

Reiter, M. P.; Leach, K. G.; Drozdowski, O. M.; Stroberg, S. R.; Holt, J. D.; Andreoiu, C.; Babcock, C.; Barquest, B.; Brodeur, M.; Finlay, A.; et al (November 2017, Physical Review C)
Precision mass measurements of magnesium isotopes and implications for the validity of the isobaric mass multiplet equation

https://doi.org/10.1103/PhysRevC.96.034316

Brodeur, M.; Kwiatkowski, A. A.; Drozdowski, O. M.; Andreoiu, C.; Burdette, D.; Chaudhuri, A.; Chowdhury, U.; Gallant, A. T.; Grossheim, A.; Gwinner, G.; et al (September 2017, Physical Review C)

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