Latest discovered isotopes

The most recent discoveries of isotopes will be displayed here. These isotopes will be added to the database after the references are entered in the Nuclear Science References database.

9 April 2024

Shimizu et al. reported the first observation of fifteen new isotopes at Radioactive Isotope Beam Factory (RIBF) at RIKEN in Japan. The discovery of copper-84, zinc-86 and 87, gallium-91 and 92, arsenic-93, 94, and 95, selenium-96 and 97, bromine-99 and 100, as well as krypton-103 was published in the Physical Review C article "Production of new neutron-rich isotopes near the N = 60 isotones 92Ge and 93As by in-flight fission of a 345 MeV/nucleon 238U beam."

15 February 2024

The first discovery of isotopes at FRIB was published in Physical Review Letters. Tarasov et al. described the observation of thulium-182 and 183, ytterbium-186 and 187, and lutetium-190 in “Observation of New Isotopes in the Fragmentation of 198Pt at FRIB.”

Additionally, in Physical Review Letters, Yang et al. reported the observation of tungsten-156 and osmium-160 at the Heavy Ion Research Facility in Lanzhou (HIRFL), China: “Discovery of New Isotopes 160Os and 156W: Revealing Enhanced Stability of the N=82 Shell Closure on the Neutron-Deficient Side.” These two isotopes had already been published in November 2023 by Briscoe et al. (see below). However, Yang et al. submitted their paper on 5 July 2023, six days before Briscoe et al. (11 July 2023).

2 February 2024

The discovery of actinium-203 was reported last week by Wang et al. from the Institute of Modern Physics of the Chinese Academy of Science in Lanzhou, China. The article “𝛼-decay properties of new neutron-deficient isotope 203Ac” was published in Physics Letters B.

29 November 2023

Earlier this month, Briscoe et al. reported the first observation of tungsten-156 and osmium-160 at the Accelerator Laboratory of the University of Jyväskylä, Finland, in Physics Letters B“Decay spectroscopy at the two-proton drip line: Radioactivity of the new nuclides 160Os and 156W.”