Uncertainty Analysis of H_p(10)_meas/H_p(10)_del Ratio for TLD-100H at Energy 24-1250 keV

The h_p(10) of an ideal tld is independent of photon energy. this is to say that at any photon energy, the ratio r of the measured dose h_p(10)_meas to the delivered dose h_p(10)_del is always 1. in practice however the h_p(10) is dependent on the energy and r is not equal to 1. for this reason, icrp has set the lower limit ll and upper limit u_l for r as 0.55≤r≤1.63 for detection limit of 0.1 msv and h_p(10)_del=1 msv. as r is the quantity arises from the measurement processes, the existence of uncertainty of r, i.e. δr is inevitable. in the boundary cases, such as when r is slightly lower than l_l or slightly larger than u_l, δr would serve a useful quantity in decision making either to accept or to reject the value of r. the purpose of the present work is to estimate δr for the tld- 100h for photon energy of 24-1250 kev. the estimation of δr is based on the error propagation method. for the eleven photon energies, this work obtained (a) r in the range of 0.77 to 1.16, (b) δr in the range of ± 0.02 to ± 0.04. the values of r were satisfactory as they complied the icrp limit. the determined δr is considered very small as it is in the order of 3% in comparison of r.