Speaker
Description
The nuclear spectroscopy program at the Accelerator Laboratory of the University of Jyväskylä has for decades relied on combining a germanium-detector array with a recoil separator, enabling the use of the highly sensitive recoil-gating and recoil-decay tagging techniques. Since 2019, the JUROGAM 3 spectrometer [1] has been operated together with the vacuum-mode MARA and gas-filled RITU separators in numerous experiments addressing a variety of physics cases. The success of the experimental program is demonstrated by our recent results on nuclei near the N=Z line [2,3], as well as in the lead region, where complementary measurements indicate the existence of three different deformations near the ground state [4]. In this presentation these recent highlights are discussed, along with ongoing and future gamma-ray spectroscopy studies of the neutron-deficient nuclei in the A=30-50 mass region.
[1] J. Pakarinen, J. Ojala, P. Ruotsalainen et al., Eur. Phys. J. A 56, 149 (2020).
[2] K. Wimmer, P. Ruotsalainen, S. Lenzi et al., Phys. Lett. B 847, 138249 (2023).
[3] G. L. Zimba, P. Ruotsalainen, D. G. Jenkins et al., Phys. Rev. Lett. 134, 022502 (2025).
[4] A. Montes Plaza, J. Pakarinen, P. Papadakis et al., Communications physics 8, 8 (2025).