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Masses, isomers and decay studies for elemental nucleosynthesis

Total Cost €


EC-Contrib. €






Project "MAIDEN" data sheet

The following table provides information about the project.


Organization address
postcode: 40100

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Finland [FI]
 Total cost 1˙999˙575 €
 EC max contribution 1˙999˙575 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-COG
 Funding Scheme ERC-COG
 Starting year 2018
 Duration (year-month-day) from 2018-06-01   to  2023-05-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    JYVASKYLAN YLIOPISTO FI (JYVASKYLA) coordinator 1˙999˙575.00


 Project objective

About half of the elements heavier than iron have been produced via the rapid neutron capture process, the r process. Its astrophysical site has been one of the biggest outstanding questions in physics. Neutrino-driven winds from proto-neutron stars created in core-collapse supernovae were long considered as the most favourable site for the r process. Recently, neutron-star mergers have become the most promising candidates, and new exciting observations from these compact objects, such as gravitational waves, are expected in the coming years. In order to constrain the astrophysical site for the r process, nuclear binding energies (i.e. masses) of exotic neutron-rich nuclei are needed because they determine the path for the process and therefore have a direct effect on the final isotopic abundances. In this project, high-precision mass measurements will be performed in three regions relevant for the r process, employing novel production and measurement techniques at the IGISOL facility in JYFL-ACCLAB. Long-living isomeric states, which also play a role in the r process, will be resolved from the ground states to obtain accurate mass values. Post-trap decay spectroscopy will be performed to confirm which state has been measured in order to avoid systematic uncertainties in the mass values. The new data will be compared with theoretical mass models and included in r-process calculations performed for various astrophysical sites. MAIDEN will advance our knowledge of nuclear structure far from stability and reduce nuclear data uncertainties in the r-process calculations, which can potentially constrain the astrophysical site for the r process and lead to a scientific breakthrough in our understanding of the origin of elements heavier than iron in the universe.


List of deliverables.
Data Management Plan Open Research Data Pilot 2020-02-12 12:04:40

Take a look to the deliverables list in detail:  detailed list of MAIDEN deliverables.


year authors and title journal last update
List of publications.
2018 M. Hukkanen
Experimental studies for the second-forbidden non-unique beta-decay of 20F at IGISOL
published pages: , ISSN: , DOI:
MSc thesis, University of Jyväskylä 2020-02-05
2018 Aprahamian, A.; Surman, R.; Frebel, A.; McLaughlin, G. C.; Arcones, A.; Balantekin, A. B.; Barnes, J.; Beers, Timothy C.; Holmbeck, Erika M.; Yoon, Jinmi; Brodeur, Maxime; Sprouse, T. M.; Vassh, Nicole; Cizewski, Jolie A.; Clark, Jason A.; Cote, Benoit; Couch, Sean M.; Eichler, M.; Engel, Jonathan; Ezzeddine, Rana; Fuller, George M.; Giuliani, Samuel A.; Grzywacz, Robert; Han, Sophia; Horowitz, C.
FRIB and the GW170817 Kilonova
published pages: 44, ISSN: , DOI:
\"Proceedings for the FRIB Theory Alliance workshop \"\"FRIB and the GW170817 kilonova\"\", held 16-27 July 2018 at the Facility for Rare Isotope Beams, Michigan State University, East Lansing, MI USA\" 1 2020-02-05
2019 D. Testov, D. Verney, Y. Penionzhkevich, A. Boso, C. Delafosse, F. Didierjean, I. Deloncle, F. Ibrahim, F. Le Blanc, C. Gaulard, J. Guillot, S. Lukyanov, V. Maslov, I. Matea, B. Roussière, A. Severyukhin, Y. Sobolev, E. Sokol, V. Smirnov, R. Thoër, D. Thisse, G. Tocabens
Trial for the long neutron counter TETRA using 96,97 Rb radioactive sources
published pages: P08002-P08002, ISSN: 1748-0221, DOI: 10.1088/1748-0221/14/08/P08002
Journal of Instrumentation 14/08 2020-02-05
2019 M. Vilén
Mass measurements and production of ions at IGISOL for the astrophysical r- and rp-processes
published pages: , ISSN: , DOI:
PhD thesis, University of Jyväskylä 2020-02-05
2019 Ch. Lorenz, L. G. Sarmiento, D. Rudolph, P. Golubev, T. Eronen, D. A. Nesterenko, A. Kankainen, L. Canete, D. M. Cox, A. Fernandez, U. Forsberg, A. Jungclaus, I. Kojouharov, N. Kurz, N. Lalović, J. Partanen, M. Reponen, S. Rinta-Antila, A. de Roubin, A. Såmark-Roth, V. Vaquero, M. Vilén
β decay of Cd 127 and excited states in In 127
published pages: , ISSN: 2469-9985, DOI: 10.1103/physrevc.99.044310
Physical Review C 99/4 2020-02-05
2019 M. Vilén, A. Kankainen, P. Bączyk, L. Canete, J. Dobaczewski, T. Eronen, S. Geldhof, A. Jokinen, M. Konieczka, J. Kostensalo, I. D. Moore, D. A. Nesterenko, H. Penttilä, I. Pohjalainen, M. Reponen, S. Rinta-Antila, A. de Roubin, W. Satuła, J. Suhonen
High-precision mass measurements and production of neutron-deficient isotopes using heavy-ion beams at IGISOL
published pages: , ISSN: 2469-9985, DOI: 10.1103/PhysRevC.100.054333
Physical Review C 100/5 2020-02-05
2019 L. Canete
High precision mass measurements for nuclear astrophysics
published pages: , ISSN: , DOI:
PhD thesis, University of Jyväskylä 2020-02-05

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