Posted by Joe Rotunda on Apr 23, 2020
Have you ever wondered why the Harshaw TLD dose algorithms based on LiF:Mg,Ti have 8 days pre and post irradiation built into their calculations?
During the process of calibrating the dose algorithm you need to prepare dosimeters for the “Cs137 Relative Response” factors and possibly beta and neutron calibration factors if you also need them calibrated. This is the time where the 8 days of pre- and post-irradiation come into consideration.
Read more →
Posted by Joe Rotunda on Mar 16, 2020
Accounting for Fade in LiF:Mg,Ti TLD Systems Reducing uncertainty in calibration and routine dose readout. Do you consider fade when calibrating your TLD system and performing dose readouts? If you are using TLD-100, 600, or 700 (LiF:Mg,Ti), fade must be incorporated into your readout protocol. For systems using TLD-100H, 600H, or 700H (LiF:Mg,Cu,P), fade is minimal when using the factory-recommended Time Temperature Profile (TTP) and is typically not a concern. Reducing Short-Term Uncertainty When performing calibrations for the Reader Calibration Factor (RCF) or Element Correction Coefficient (ECC), Harshaw recommends: Wait 24–48 hours after annealing before irradiation. Wait 24–48 hours after...
