Beta Environmental Fine Structure
The Beta Environmental Fine Structure (BEFS) is a modulation of the electron emission probability due to the atomic and molecular surrounding of the decaying nucleus: it is explained by the wave structure of the electron in analogy with EXAFS. It has been suggested that this sensitivity of the beta decay to the atomic environment could be exploited for analytical purposes.
C Arnaboldi, G Benedek, C Brofferio, S Capelli, F Capozzi, O Cremonesi, A Filipponi, E Fiorini, A Giuliani, A Monfardini, A Nucciotti, M Pavan, M Pedretti, G Pessina, S Pirro, E Previtali and M Sisti. Measurement of the p to s wave branching ratio of Re-187 beta decay from beta environmental fine structure. PHYSICAL REVIEW LETTERS 96(4), 2006. DOI
BEFS in the beta spectrum of 187Re measured with AgReO4 microcalorimeters.
