Could someone tell me what the dose rate from a 1130 Curie Moly-99 source would be.
Using 6CEN, I calculate 9221 R/hr at 1 foot. I haven't done too many of these lately, so double-check. If that is right, the doserate at 1 meter (40 inches) is 830 R/hr.
http://www.raymcginnis.net/Miscellaneous.aspxresults show 332,000 at 5 cm. This sounds like a good application for DU shielding. If I read it correctly, that is about 0.3 inches for a tenth-thickness given a ballpark 1 MeV decay energy.
I will need to be more awake to deal with the Tc-99 radioactive daughter! (Maybe one of the ALARA dudes on the site will sharpen up their sliderule and dazzle us!)