C. Bargholtz et al., SEARCH FOR ANOMALIES IN LOW-ENERGY-ELECTRON SCATTERING FROM THORIUM, Physical review. C. Nuclear physics, 48(3), 1993, pp. 1388-1391
The scattering from thorium of electrons emitted in the decay of Y-90
is studied. Coincidence spectra of electrons and positrons in the ener
gy region 210-420 keV were measured. In contrast with what has been th
e case in studies of the corresponding positron scattering, no anomaly
was observed.