was 0 [less than or equal to] D [less than or equal to] 200 Gy.
The absorbed dose
rate in irradiation facility was measured to be 1.67 kGy/h using reference alanine dosimeter and the measured films were placed between two polystyrene slabs of the same thickness to ensure that irradiation were performed under electronic equilibrium conditions which were maintained during irradiation.
It was noted that the rate of absorbed dose
increased with the increase in the field size and decreased with the increase in depths.
The absorbed dose
to organs was evaluated according to the following equation as previously reported :
For low-energy photons, kerma is numerically approximately the same as absorbed doses
. Photons only deposit energy through electrons and, for low-energy photons, the secondary electrons have very short range; in other words, the energy is deposited locally.
Beyond our original intention, we additionally tried to utilize the FTIR spectra also for estimation of the secondary structure development for individual absorbed doses
with time after irradiation.
Rheological parameters of PP/PB-I blend at different absorbed doses
. Slope of Log Slope of Log G'- [eta] *-Log to Irradiation Log [omega] (in (in power dose (kGy) terminal region) law region) S-0 0 0.61 1.46 S-12.5 12.5 0.65 0.64 S-25 25 0.61 0.68 S-50 50 0.56 0.64 S-75 75 0.48 0.65 S-100 100 0.42 0.66
The EB effects are related to the absorbed dose
(D) expressed in Gray or J [kg.sup.-1] and absorbed dose
rate (D*) expressed in [Gys.sup.-1] or J[kg.sup.-1] [s.sup.-1] [19-21].
In the vertical axis from Figure 4 and over Z axis there are percentage PDD values, while in the horizontal axis there is the percentage of absorbed doses
profile values, where the maximum dose deposit from the PDD is registered.
(24) The absorbed dose
to the breast for a perfusion scan is 0.28 mGy.
Where results of dosimetry are not given an assumption is made for the purposes of this study that absorbed doses
do not differ greatly from the target doses reported in the literature.