In MCNPX, when I tracked second protons generated by the neutrons, I saw proton flux if the neutron energy is 100 Mev, but the second proton flux is 0 if incoming neutron energy is 10 Mev. The second protons were generated by neutron interacting with hydrogen and carbon.
Why is that? Thank you~~~
Hi,
Please post the link where we can download the source and its version and the configuration or command you use to compile. We do try to compile as many as applications we can but we are not familiar with all of them.
Thank you,
Hongyon
the source code is:
1- This is a test
2- c cell card
3- 1 1 -0.0018024 -7 -9 10 vol=56.52 $detector zone for large detector
4- 2 1 -0.0018024 -8 -11 12 vol=1.57 $detector zone for small detector
5- 3 2 -1.0 -3 9 -1 vol=19.625
6- 4 2 -1.0 7 -1 -9 10 vol=100.48
7- 5 2 -1.0 -10 4 -1 vol=19.625
8- 6 2 -1.0 -5 11 -2 vol=14.13
9- 7 2 -1.0 -11 12 -2 8 vol=12.56
10- 8 2 -1.0 -12 6 -2 vol=14.13
11- 9 3 0.00001 -13 2 1 vol=50
12- 10 3 0.00001 -13 5 -2 vol=50
13- 11 3 0.00001 -13 3 -1 vol=50
14- 12 3 0.00001 -13 -6 -2 vol=50
15- 13 3 0.00001 -13 -4 -1 vol=100
16- 14 0 13 $kill zone
17-
18- c surface card
19- 1 c/z 35 0 5
20- 2 c/z 10 0 3
21- 3 pz 5
22- 4 pz -5
23- 5 pz 3
24- 6 pz -3
25- 7 c/z 35 0 3
26- 8 c/z 10 0 1
27- 9 pz 4
28- 10 pz -4
29- 11 pz 1
30- 12 pz -1
31- 13 so 200
32- 14 pz 0
33-
34- mode n h
35- IMP:n,h 12 12 8 8 8 8 8 8 1 1 1 1 1 0
36- PHYS:n
37- PHYS:h
38- nps 100000000
39- c source definition
40- SDEF SUR=14 POS=35 0 0 RAD=D1 DIR=1 erg=100 par=1
41- SI1 10
42- c material
43- m1 1001 8 6012.66 3
44- m2 1001 2 8016 1
45- m3 8016 0.000002 7014 0.000008
46- c Tally
47- f6:n,h 1
48- E6 1 5I 7
49- f16:n,h 2
50- E16 1 5I 7
51- f14:h 1
52- E14 1 5I 7
53- f4:h 2
54- E4 1 5I 7
erg=100, i can see second proton flux.
when i change erg=10, the second proton flux is 0
Hi,
Sorry but I don’t understand your source code. If you can’t post your code here, you can e-mail trs@pgroup.com. Please send code that we can compile with Fortran/C/C++ compiler.
Thank you,
Hongyon
i sent u an email~~~ thank you~~