Tab Buildup
Contains parameters to account for scattered radiation.
Include scattered radiation - enabling or disabling of scattered radiation field accounting in the final value. The following section outlines the methodology for calculating the buildup factor for multilayer protection.
The Heterogeneous medium field is a drop-down list with methods for calculating the buildup factor for multilayer protection (heterogeneous). There are 3 methods available:
- Broder method;
- The Last layer method;
- Weighted layer method.
The calculation of the buildup factor for multilayer protection is based on one of the selected methods of calculating the buildup factor for a single layer (heterogeneous medium). The are 3 method available:
- Taylor method;
- Geometric Progression method (MFP < 40);
- Improved Geometric Progression method (MFP < 100).
It should be noted that there are two distinct varieties of the geometric progression method. The standard geometric progression method, labelled in the BSP as "Geometric Progression (MFP < 40)", has been developed to work up to a maximum of 40 MFP (mean free path). Furthermore, an enhanced version of the geometric progression formula is available for thicker layers of homogeneous protection, offering a maximum of 100 MFP.
Please be advised that the improved method utilises extrapolated values of the fitting coefficients of the geometric progression formula.
More details on the geometric progression method can be found in work of Y. Harima, et al..