gamma.model: Gamma (X ray) response models
Description
In libamtrack, there are currently six parametrizations of the
gamma / X ray response of a system. They are referred to using sequential
positive integer numbers (see details).Details
The implemented gamma models are:
rl{
gamma.model description
1 A simple test function (constant over entire track width/electron
range)
2 Generalized hit/target model
3 Radioluminescence response
4 Simple exponential saturation (special case of 2: one hit / one
target)
5 Linear-quadratic model
6 Mejdahl's TLD response for LiF as used by Geiss et al. (1998)
}
The corresponding gamma parameters are:
rlllll{
gamma.model gamma.parameters[1] gamma.parameters[2] gamma.parameters[3] gamma.parameters[4] gamma.parameters[5]
1 NA NA NA NA NA
2 rel. response characteristic dose [Gy] hittedness multiplicity 0 to finish or another set of 4 parameters [1]-[4]
3 max. response transition dose [Gy] dynamic NA NA
4 max. response characteristic dose [Gy] NA NA NA
5 alpha [1/Gy] beta[1/Gy2] transition dose [Gy] NA NA
6 const k1 a1 k2 a2
}
The corresponding default/example values are:
rlllll{
gamma.model gamma.parameters[1] gamma.parameters[2] gamma.parameters[3] gamma.parameters[4] gamma.parameters[5]
1 NA NA NA NA NA
2 1.0 10.0 1 1 0
3 1e6 20.0 6.0 NA NA
4 1e6 10.0 NA NA NA
5 0.2 0.018 30.0 NA NA
6 6e3 0.59 5e-4 0.41 2e-6
}See Also
More information on models, especially the explicit formulas used,
valid energy ranges and references to literature are found in the libamtrack
reference manual
(http://libamtrack.dkfz.org/libamtrack/images/3/31/LibamtrackReferenceMa
nual.pdf).