  The conversion electrons from the decay of the 35.5-keV excited state of
125Te following the electron capture decay of 125I have been investigated at
high resolution using an electrostatic spectrometer. The penetration parameter
lambda = -1.2(6) and mixing ratio |delta| = 0.015(2) were deduced by fitting to
literature values and present data. The shake probability of the conversion
electrons is estimated to be 0.5, more than two times larger than the predicted
value of 0.2.
