Speaker
Description
We have developed a new, extremely precise experimental approach for measuring the lifetimes of excited states. This method uses gamma-tracking detectors with high resolution in energy and angle.
This method has been used at GANIL, France, to measure the lifetimes of 23Mg excited states. The gamma rays were measured with the AGATA gamma-ray detector, and the ejectiles from the 3He(24Mg,alpha)23Mg* reaction were measured in coincidence with the VAMOS++ spectrometer. This measurement was used to constrain the rate of the 22Na(p,gamma)23Mg reaction, and to determine the maximum detection distance of the 22Na produced in novae.
Ref: Fougères, Chloé, et al. "Search for 22Na in novae supported by a novel method for measuring femtosecond nuclear lifetimes." Nature communications 14.1 (2023): 4536.
