NaI detector in water source -- gamma & beta

[ali khotbesara]

Homework Statement

simulation of bersiv function of NaI detector it's in cylinder of water with volumetric source of Potassium40 (90% beta 1.31 mev & 10% gamma 1.504 mev )
how candefin define electron and gamma Volumetric source in mcnpx (6) ?
https://en.wikipedia.org/wiki/Potassium-40#/media/File:Potassium-40-decay-scheme.svg

Homework Equations

cylinder rad= 220 cm & high= 190 cm
detc rad= 6 cm & high= 8

The Attempt at a Solution

this is my solution:
NaI dect in wather source
1 1 -3.667 -4 5 -1 imp:p=1
2 2 -0.998 -3 6 -2 #1 imp:p=1
3 0 -7 #1 #2 imp:p=1
4 0 7 imp:p=0

1 cz 6
2 cz 220
3 pz 95
4 pz 4
5 pz -4
6 pz -95
7 so 250

mode p
m1 11023 0.4999 53127 0.5001
m2 1001 0.666657 8016 0.333343
sdef pos=0 0 0 rad=d1 axs=0 0 1 ext=d2 $ par=? gamma and beta
cell=1
si1 0 2
sp1 0 1
si2 -4 4
sp2 0 1
f8:p 1
e8 0.01 2998i 3
nps 100000

 

[Mark44]

Homework Statement

simulation of bersiv function of NaI detector it's in cylinder of water with volumetric source of Potassium40 (90% beta 1.31 mev & 10% gamma 1.504 mev )
how candefin define electron and gamma Volumetric source in mcnpx (6) ?

What does mcnpx (6) mean?

https://en.wikipedia.org/wiki/Potassium-40#/media/File:Potassium-40-decay-scheme.svg

Homework Equations

cylinder rad= 220 cm & high= 190 cm
detc rad= 6 cm & high= 8

What is "detc"?

The Attempt at a Solution

this is my solution:
NaI dect in wather source

The information in the table below is not clear. Also, what is "dect"? Above you have "detc". I don't understand either of these. Are they short for "detector"?

1 1 -3.667 -4 5 -1 imp:p=1
2 2 -0.998 -3 6 -2 #1 imp:p=1
3 0 -7 #1 #2 imp:p=1
4 0 7 imp:p=0

The table below is meaningless, as far as I can tell. What do "cz", "pz", and "so" mean? And what is the significance of the numbers?

1 cz 6
2 cz 220
3 pz 95
4 pz 4
5 pz -4
6 pz -95
7 so 250

mode p
m1 11023 0.4999 53127 0.5001
m2 1001 0.666657 8016 0.333343
sdef pos=0 0 0 rad=d1 axs=0 0 1 ext=d2 $ par=? gamma and beta
cell=1
si1 0 2
sp1 0 1
si2 -4 4
sp2 0 1
f8:p 1
e8 0.01 2998i 3
nps 100000

I don't know how you can expect anyone to help here, with tables of numbers with no explanation for what the numbers mean.