α-cluster decay from 24Mg resonances produced in the 12C(16O,24Mg)α reaction* *Supported by the National Key R& D Program of China (2018YFA0404403), the National Natural Science Foundation of China (11875074, 11875073, 12027809, 11961141003, U1967201, 11775004, and 11775003), the Continuous Basic Scientific Research Project (WDJC-2019-13), and the State Key Laboratory of Nuclear Physics and Technology, Peking University (NPT2020KFY10).

Abstract

A transfer reaction and cluster-decay experiment, C(O,Mg α+Ne)α, was performed at a beam energy of 96 MeV. Both recoil and decay α particles were detected in coincidence, allowing us to deduce the energy-momentum of a Ne fragment. A number of resonant states of Mg were reconstructed up to an excitation energy of approximately 30 MeV. Owing to the experimentally achieved excellent resolutions of the Q-value and excitation-energy spectra, the relative decay widths for each resonant state inMg to various final states of Ne were extracted, along with the total decay width. The obtained results provide good testing ground for theoretical descriptions of multiple clustering configurations inMg.