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The CLRP TG-43 Parameter Database
R. E. P. Taylor and D. W. O. Rogers

Radial dose function data for the VariSource VS2000 source
Radius / cm gL(r)
L=0.50 cm		gp(r)Unc.
%
0.20 0.986 0.721 0.05
0.25 0.991 0.794 0.05
0.30 0.993 0.845 0.06
0.40 0.995 0.908 0.08
0.50 0.997 0.944 0.10
0.60 0.997 0.964 0.12
0.70 0.997 0.977 0.14
0.75 0.999 0.984 0.14
0.80 1.000 0.989 0.15
0.90 0.998 0.993 0.17
1.00 1.000 1.000 0.19
1.25 1.004 1.011 0.05
1.50 1.005 1.016 0.06
1.75 1.007 1.021 0.07
2.00 1.010 1.026 0.08
2.50 1.011 1.028 0.10
3.00 1.012 1.031 0.11
3.50 1.014 1.033 0.13
4.00 1.013 1.032 0.15
4.50 1.013 1.033 0.16
5.00 1.011 1.030 0.18
6.00 1.003 1.023 0.11
7.00 0.994 1.014 0.12
8.00 0.982 1.002 0.14
9.00 0.966 0.985 0.15
10.00 0.949 0.969 0.17
11.00 0.930 0.949 0.09
12.00 0.908 0.927 0.10
13.00 0.884 0.902 0.11
14.00 0.858 0.876 0.12
15.00 0.834 0.851 0.13
16.00 0.805 0.822 0.14
17.00 0.777 0.792 0.15
18.00 0.749 0.764 0.16
19.00 0.721 0.736 0.17
20.00 0.694 0.708 0.18
Fitting coefficients for gL(r) = (a0r-2 + a1r-1 +a2 + a3r +a4r2 + a5r3) e-a6r
Fit rangeCoefficients
rmin (cm)rmax (cm)a0 / cm2a1 / cma2a3 / cm-1a4 / cm-2a5 / cm-3a6 / cm-1
0.2020.00-1.4610E-038.2070E-039.7643E-011.4638E-016.8636E-032.9038E-041.2814E-01

Fitting coefficients for gL(r) = a0 + a1r +a2r2 + a3r3 +a4r4 + a5r5
Fit rangeCoefficients
rmin (cm)rmax (cm)a0 a1 / cm-1a2 / cm-2a3 / cm-3a4 / cm-4a5 / cm-5
0.2020.009.8715E-011.5178E-02-2.3925E-036.1905E-05-1.6035E-063.7843E-08

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D.W.O. Rogers home page
August 29 2008.