<p>The activity of the 252Cf source, used for the calibration was 3.7 MBq at 15.05.2006. Unfortunately, uncertainty is missing from the data sheet :-(<a href="150511_091411/252Cf_15_05_2006_3p7MBq.jpg?lb=BRIKEN"><img border="0" alt="252Cf_15_05_2006_3p7MBq.jpg" src="150511_091411/252Cf_15_05_2006_3p7MBq.jpg?lb=BRIKEN&thumb=1" name="att0" id="att0" /></a></p> |