Roman Shopa
(National Centre for Nuclear Research)
16/06/2025, 10:00
The analysis of positronium (Ps) annihilation lifetime spectra requires multi-component modelling, constituted by exponentially modified Gaussian functions. A direct curve fitting is an ill-posed problem and needs either deconvolution or multi-stage constrained minimisation. In Ps lifetime imaging (PLI), a technique that targets local Ps lifetime distribution, an additional challenge emerges –...
