Currently Under Review

Peer-Reviewed

22.       Precision mass measurement of 61Zn and updated 𝐹⁡𝑡 value for conserved vector current tests

Giesel PF, Atanasov D, Blaum K, Fischer P, Karthein J. et al.

Accepted with Phys. Rev. C (2026). arXiv:

21.       Commissioning the Resonant Ionization Spectroscopy Experiment at FRIB

Brinson A, Rickey BJ, Allmond JM, Dockery A, Fernandez AC, …, Karthein J et al.

Accepted with Phys. Rev. Res. (2026). arXiv: 2511.08881

20.         Charge radii measurements of exotic tin isotopes in the proximity of N = 50 and N = 82

Gustafsson FP, Rodríguez LV, Garcia Ruiz RF, Miyagi T, Bai SW, …, Karthein J et al.

Phys. Rev. Lett. 135, 222501 (2025).   arXiv: 2504.17060

19.         Extending the low-𝑍 “border” of the 𝐴=100 region of deformation with precision mass spectrometry of  96−98Kr

Lunney D, Manea V, Mougeot M, Nies N, Althubiti NA, …, Karthein J et al.

Phys. Rev. C 112, 034307 (2025).  arXiv: 2509.05538

18.         Variations in the charge radii of indium isotopes between N = 52 and 82

Vernon A, Binnersley CL, Sahoo BK, Billowes J, Bissell ML, …, Karthein J et al.

Phys. Rev. C 111, 064325 (2025). **Editor's Suggestion**

17. Electromagnetic properties of indium isotopes elucidate the doubly magic character of 100Sn

Karthein J, Ricketts CM, Garcia Ruiz RF, Billowes J, Binnersley CL et al.

Nature Phys. 20, 1719 (2024).   arXiv:2310.15093

16. Electroweak Nuclear Properties from Single Molecular Ions in a Penning Trap

Karthein J, Udrescu SM, Moroch SB, Belosevic I, Blaum K et al.

Phys. Rev. Lett. 133, 033003 (2024).   arXiv:2310.11192

15. Nuclear charge radii of silicon isotopes

König K, Berengut JC, Borschevsky A, Brinson A, Brown BA, …, Karthein J, et al.

Phys. Rev. Lett. 132, 162502 (2024).   arXiv:2309.02037

14. Opportunities for Fundamental Physics Research with Radioactive Molecules

Arrowsmith-Kron G, Athanasakis M, Au M, Ballof J, Berger R, …, Karthein J, et al.

Rep. Prog. Phys. 87 084301 (2024).   arXiv:2302.02165

13. Isomeric Excitation Energy for 99Inm from Mass Spectrometry Reveals Constant Trend Next to Doubly Magic 100Sn

Nies L, Atanasov D, Athanasakis M, Au M, Blaum K, …, Karthein J, et al.

Phys. Rev. Lett. 131, 022502 (2023).   arXiv:2306.02033

12. KATRIN background due to surface radioimpurities

Fränkle FM, Schaller A, Blaum K, Bornschein L, Drexlin G, …, Karthein J, et al.

Astropart. Phys. 102686 (2022).   arXiv:2011.05107

11. Mass measurements of 99–101In challenge ab initio nuclear theory of the nuclide 100Sn

Mougeot M*, Atanasov D*, Karthein J*, Wolf RN, Ascher P, et al.

*MM, DA, and JK share first authorship for equal contributions.

Nature Phys. 17, 1099 (2021).   arXiv:2109.10673

10. Analysis methods and code for very high-precision mass measurements of unstable isotopes

Karthein J, Atanasov D, Blaum K, Lunney D, Manea V, Mougeot M.

Comp. Phys. Comm. 267, 108070 (2021).   arXiv:2102.10413

9. Masses of short-lived 49Sc, 50Sc, 70As, 73Br, and stable 196Hg nuclides

Kulikov I, Algora A, Atanasov D, Ascher P, Blaum K, …, Karthein J, et al.

Nucl. Phys. A 1002, 121990 (2020).   arXiv:2010.15467

8. Examining the N=28 shell closure through high-precision mass measurements of 46–48Ar

Mougeot M, Atanasov D, Barbieri C, Blaum K, Breitenfeld M, …, Karthein J, et al.

Phys. Rev. C 102, 014301 (2020).   arXiv:2006.02712

7. First glimpse of the N=82 shell closure below Z=50 from masses of neutron-rich cadmium isotopes and isomers

Manea V, Karthein J, Atanasov D, Bender M, Blaum K, et al.

*VM and JK share first authorship for equal contributions.

Phys. Rev. Lett. 124, 092502 (2020).   arXiv:2001.05075

6. Improved stability of multi-reflection time-of-flight mass spectrometers through passive and active voltage stabilization

Wienholtz F, Blaum K, Karthein J, Lunney D, Malbrunot-Ettenauer S et al.

Nucl. Inst. Meth. Phys. B 463, 348 (2020).

5. QEC-value determination for 21Na→21Ne and 23Mg→23Na mirror-nuclei decays using high-precision mass spectrometry with ISOLTRAP at ISOLDE/CERN

Karthein J, Atanasov D, Blaum K, Breitenfeldt M, Bondar V et al.

Phys. Rev. C 100, 015502 (2019).   arXiv:1906.01538

4. Direct decay-energy measurement as a route to the neutrino mass

Karthein J, Atanasov D, Blaum K, Eliseev S, Filianin P et al.

Hyperfine Int. 240, 61 (2019).   arXiv:1905.05510

3. Long-term monitoring of the internal energy distribution of isolated cluster systems

Breitenfeldt C, Blaum K, George S, Göck J, Guzmán-Ramírez G, Karthein J, et al.

Phys. Rev. Lett. 120, 253001 (2018).   arXiv:1805.11403

2. Photodissociation of an Internally Cold Beam of CH+ ions in a Cryogenic Storage Ring

O’connor AP, Becker A, Blaum K, Breitenfeldt C, George S, …, Karthein J, et al.

Phys. Rev. Lett. 116, 113002 (2016).

1. The Cryogenic Storage Ring CSR

von Hahn R, Becker A, Berg F, Blaum K, Breitenfeldt C, …, Karthein J, et al.

Rev. Sc. Instr. 87, 063115 (2016).   arXiv:1606.01525

Other

2. PI-ICR analysis software

Karthein J.

GitHub, Zenodo (2020).

1. MRToF analysis software

Karthein J.

GitHub (2019).