Ciemala, M.Ziliani, S.Crespi, F. C. L.Leoni, S.Fornal, B.Maj, A.Bednarczyk, P.2024-11-072024-11-0720211434-60011434-601Xhttps://doi.org/10.1140/epja/s10050-021-00451-6https://hdl.handle.net/11480/16569A novel Monte Carlo technique has been developed to determine lifetimes of excited states in the tens-to-hundreds femtoseconds range in products of low-energy heavy-ion binary reactions, with complex velocity distributions. The method is based on a detailed study of Doppler-broadened gamma-ray lineshapes. Its relevance is demonstrated in connection with the 18O(7.0MeV/u)+181Ta experiment, performed at GANIL with the AGATA+VAMOS+PARIS setup, to study neutron-rich O, C, N, ... nuclei. Excited states in O-17 and O-19, with known lifetimes, are used to validate the method over the similar to 20-400fs lifetime-sensitivity range. Emphasis is given to the unprecedented position resolution provided by gamma-tracking arrays, which turns out to be essential for reaching the required accuracy in Doppler-shift correction. The technique is anticipated to be an important tool for lifetime investigations in exotic neutron-rich nuclei, produced with intense ISOL-type beams.eninfo:eu-repo/semantics/openAccessGammaPerformanceScatteringVamosArrayArticle57510.1140/epja/s10050-021-00451-62-s2.0-85105223331Q2WOS:000646580000001Q2