Masses, Isomers and Decay Studies for Elemental Nucleosynthesis (MAIDEN)
Main funder
Funder's project number: 771036
Funds granted by main funder (€)
- 1 999 575,00
Funding program
Project timetable
Project start date: 01/06/2018
Project end date: 30/11/2023
Summary
About half of the elements heavier than iron have been produced via the rapid neutron capture process (r process). However, its astrophysical site has remained unknown and is one of the big outstanding questions in physics. Neutrino-driven winds from the proton-neutron star created in core-collapse supernovae were long considered as the most favorable site for the r process but recently neutron-star mergers have become more and more promising candidates. In order to constrain the astrophysical site for the r process, nuclear binding energies of exotic neutron-rich nuclei are needed as they determine the path for the process and therefore strongly effect on the final isotopic abundances. In the project MAIDEN, high-precision mass measurements will be performed for the r process employing novel production and measurement techniques at JYFLTRAP in JYFL-ACCLAB. For accurate measurements, long-living isomeric states have to be resolved from the ground states using state-of-the-art techniques, and the measured states identified via post-trap spectroscopy if in question. Beta-decay properties of neutron-rich nuclei are important for the r-process also as such. MAIDEN will reduce the nuclear data uncertainties related to the r-process calculations. When compared with the observed r-process abundances, this can potentially constrain the astrophysical site for the r-process and lead to a scientific breakthrough.
Principal Investigator
Primary responsible unit
Follow-up groups
Profiling area: Accelerator and Subatomic Physics (University of Jyväskylä JYU)
Related publications and other outputs
- Mass measurements in the 132Sn region with the JYFLTRAP double Penning trap mass spectrometer (2024) Beliuskina, O.; et al.; A1; OA
- Mass measurements of neutron-rich A≈90 nuclei constrain element abundances (2024) Xian, W.; et al.; A1; OA
- Measurements of binding energies and electromagnetic moments of silver isotopes : A complementary benchmark of density functional theory (2024) de Groote, R. P.; et al.; A1; OA
- Octupole correlations in the N = Z + 2 = 56 110Xe nucleus (2024) Illana, A.; et al.; A1; OA
- Overview of High-Performance Timing and Position-Sensitive MCP Detectors Utilizing Secondary Electron Emission for Mass Measurements of Exotic Nuclei at Nuclear Physics Facilities (2024) Ge, Zhuang; A2; OA
- Precision mass measurements in the zirconium region pin down the mass surface across the neutron midshell at N = 66 (2024) Hukkanen, M.; et al.; A1; OA
- Probing the 𝑁=104 midshell region for the 𝑟 process via precision mass spectrometry of neutron-rich rare-earth isotopes with the JYFLTRAP double Penning trap (2024) Jaries, A.; et al.; A1; OA
- Production study of Fr, Ra and Ac radioactive ion beams at ISOLDE, CERN (2024) Jajčišinová, E.; et al.; A1; OA
- Reinvestigation of 91Sr and 95Y atomic masses using the JYFLTRAP Penning trap (2024) Jaries, A.; et al.; A1; OA
- 𝛽 decay of the ground state and of a low-lying isomer in 216Bi (2024) IDS Collaboration; A1; OA
