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50
Table 4.37: parameters for source energy distribution (2)
parameter
e-type = 2, (12)
eg0 =
eg1 =
eg2 =
eg3 =
e-type = 3
nm =
et0 =
et1 =
et2 =
e-type = 7
nm =
et0 =
et1 =
et2 =
p-type = 0, 1
e-type = 5, (15)
f(x) =
nm =
eg1 =
eg2 =
e-type = 6, (16)
f(x) =
nm =
eg1 =
eg2 =
p-type = 0, 1
explanation
Gaussian distribution
for 12 case, energy is given by wave length (Å)
center of Gaussian distribution (MeV)
FWHM of Gaussian distribution (MeV)
minimum cut off for Gaussian distribution (MeV)
maximum cut off for Gaussian distribution (MeV)
Maxwellian distribution : f (x) = x1.5 exp(−x/T )
(D=-200) number of energy group
If it is given by positive number, linear interpolation is assumed in a bin.
If negative, logarithmic interpolation is assumed in a bin.
Number of particle generation in a cell is proportional to f(x).
temperature parameter T (MeV)
minimum cut off for Maxwellian distribution (MeV)
maximum cut off for Maxwellian distribution (MeV)
Maxwellian distribution : f (x) = x1.5 exp(−x/T )
(D=-200) number of energy group
If it is given by positive number, linear interpolation is assumed in a bin.
If negative, logarithmic interpolation is assumed in a bin.
In default (p-type=0), equal number of particle is generated in each cell.
temperature parameter T (MeV)
minimum cut off for Maxwellian distribution (MeV)
maximum cut off for Maxwellian distribution (MeV)
(D=0) generation option
for 0, p(i)=1 for all i is assumed without the following data
for 1, p(i) must be given from the next line by the format as (p(i),i=1,ne)
energy distribution is given by f(x)
for 15 case, energy is given by wave length (Å)
any analytical function of x, Fortran style
one can use intrinsic functions and constants C.
number of energy group
If it is given by positive number, linear interpolation is assumed in a bin.
If negative, logarithmic interpolation is assumed in a bin.
Number of particle generation in a cell is proportional to f(x)
minimum cut off for energy distribution (MeV)
maximum cut off for energy distribution (MeV)
energy distribution is given by f(x)
for 16 case, energy is given by wave length (Å)
any analytical function of x, Fortran style
one can use intrinsic functions and constants C.
number of energy group
If it is given by positive number, linear interpolation is assumed in a bin.
If negative, logarithmic interpolation is assumed in a bin.
In default (p-type=0), equal number of particle is generated in each cell.
minimum cut off for energy distribution (MeV)
maximum cut off for energy distribution (MeV)
(D=0) generation option
for 0, p(i)=1 for all i is assumed without the following data
for 1, p(i) must be given from the next line by the format as (p(i),i=1,nm)