Neutron problem

Dear FLUKA authors and users:
    I just simulated neutron to hit the 3He and 10BF3 separately. I need to=
 count
the proton and deuteron in the sphere filled 3He gas, and count the Alpha i=
n the
sphere filled BF3. But in the 3He sphere, when En=A1=DC10MeV, there no coun=
ts of the
proton ,deuteron. And in the10BF3 sphere, when En=A1=DC15MeV, there no coun=
ts of the
Alpha. The above-mentioned neutron energy is just selected to simulated, no=
t the
real definition. And I don't know whether the counts is right.eg: En=3D20Me=
V,=20
fluence(proton)=3D3.43E-8cm-2, fluence(deuteron)=3D4.15E-9cm-2
   Can you help me? I am so upset for my fluka study.
   Best regards!
   Zhixi Yue

The following are the input file:
* ..+....1....+....2....+....3....+....4....+....5....+....6....+....7....+=
=2E...8
TITLE
Fluka simulation for the neutron detector design
* ..+....1....+....2....+....3....+....4....+....5....+....6....+....7....+=
=2E...8
* used name-based and fix-format general input and free-format geometry inp=
ut
GLOBAL 1.0 1.0
DEFAULTS PRECI=
SIO
*
* beam definitions
BEAM -0.01 100.0 100.0 NEUTR=
ON
BEAMPOS 0.0 0.0 -100.0
* ..+....1....+....2....+....3....+....4....+....5....+....6....+....7....+=
=2E...8
GEOBEGIN COMBN=
AME
    0 0 sphere target
* bodies
* blackhole to include geometry
SPH BLK 0.0 0.0 0.0 10000.0
* vacuum sphere
SPH VAC 0.0 0.0 0.0 1000.0
* air sphere
SPH VOI 0.0 0.0 0.0 200.0
* external sphere
SPH ESPH 0.0 0.0 0.0 26.0
END
* regions
BLKHOLE 5 +BLK -VAC
VACC 5 +VAC -VOI
INAIR 5 +VOI -ESPH
INPH 5 +ESPH
END
GEOEND
* material definitions
* ..+....1....+....2....+....3....+....4....+....5....+....6....+....7....+=
=2E...8
MATERIAL 0.001225 26.0 AIR
COMPOUND -9.256E-4 NITROGEN -2.837E-4 OXYGEN -1.572E-5 ARGONAIR
LOW-MAT ARGON 18.0 -2.0 296.0 ARGON
LOW-MAT NITROGEN 7.0 -2.0 296.0 NITRO=
GEN
LOW-MAT OXYGEN 8.0 16.0 296.0 OXYGE=
N
MATERIAL 2.0 3.01603 0.000165 HELIU=
M-3
LOW-MAT HELIUM-3 2.0 3.0 296.0 0.0 0.0HELIU=
M-3
ASSIGNMA BLCKHOLE BLKHOLE
ASSIGNMA VACUUM VACC
ASSIGNMA AIR INAIR
ASSIGNMA HELIUM-3 INPH
LOW-NEUT 260.0 42.0 0.02 2.0 31.0 1.0
*
USRBIN 11.0 NEUTRON -45.0 50.0 50.0NUFlu=
BIN
USRBIN 0.0 -50.0 100.0 100.0&
USRBIN 10.0 PROTON -46.0 50.0 50.0 50.0NuFlu=
BCA
USRBIN -50.0 -50.0 -50.0 200.0 200.0 200.0&
USRTRACK -1.0 PROTON -51.0 INPH 73584.9 50.0PROFL=
U
USRTRACK 0.01 0.000001 &
USRTRACK -1.0 TRITON -52.0 INPH 73584.9 50.0TRIFL=
U
USRTRACK 0.01 0.000001 &
USRTRACK -1.0 PHOTON -53.0 INPH 73584.9 50.0PHOFL=
U
USRTRACK 0.01 0.000001 &
USRTRACK -1.0 DEUTERON -54.0 INPH 73584.9 50.0PHOFL=
U
USRTRACK 0.01 0.000001 &
* ..+....1....+....2....+....3....+....4....+....5....+....6....+....7....+=
=2E...8
RANDOMIZ 1.
* ..+....1....+....2....+....3....+....4....+....5....+....6....+....7....+=
=2E...8
START

* ..+....1....+....2....+....3....+....4....+....5....+....6....+....7....+=
=2E...8
TITLE
Fluka simulation for the neutron detector design
* ..+....1....+....2....+....3....+....4....+....5....+....6....+....7....+=
=2E...8
* used name-based and fix-format general input and free-format geometry inp=
ut
GLOBAL 1.0 1.0
DEFAULTS PRECI=
SIO*
* beam definitions
BEAM -0.02 100.0 100.0 NEUTR=
ON
BEAMPOS 0.0 0.0 -100.0
* ..+....1....+....2....+....3....+....4....+....5....+....6....+....7....+=
=2E...8
GEOBEGIN COMBN=
AME
    0 0 sphere target
* bodies
* blackhole to include geometry
SPH BLK 0.0 0.0 0.0 10000.0
* vacuum sphere
SPH VAC 0.0 0.0 0.0 1000.0
* air sphere
SPH VOI 0.0 0.0 0.0 200.0
* external sphere
SPH ESPH 0.0 0.0 0.0 26.0
END
* regions
BLKHOLE 5 +BLK -VAC
VACC 5 +VAC -VOI
INAIR 5 +VOI -ESPH
INPH 5 +ESPH
END

GEOEND
* material definitions
* ..+....1....+....2....+....3....+....4....+....5....+....6....+....7....+=
=2E...8
MATERIAL 0.001225 26.0 AIR
COMPOUND -9.256E-4 NITROGEN -2.837E-4 OXYGEN -1.572E-5 ARGONAIR
LOW-MAT ARGON 18.0 -2.0 296.0 ARGON
LOW-MAT NITROGEN 7.0 -2.0 296.0 NITRO=
GEN
LOW-MAT OXYGEN 8.0 16.0 296.0 OXYGE=
N
MATERIAL 5.0 10.0 2.31 27.0 BORON=
-10
LOW-MAT BORON-10 5.0 10.0 296.0 BORON=
-10
MATERIAL 9.0 19.0 1.69 28.0 FLUOR=
INE
LOW-MAT FLUORINE 9.0 19.0 296.0 FLUOR=
INE
MATERIAL 2.35 29.0 SANFU
COMPOUND 1.0 BORON-10 3.0 FLUORINE SANFU
ASSIGNMA BLCKHOLE BLKHOLE
ASSIGNMA VACUUM VACC
ASSIGNMA AIR INAIR
ASSIGNMA SANFU INPH
LOW-NEUT 260.0 42.0 0.02 2.0 31.0 1.0
*
USRBIN 11.0 NEUTRON -45.0 50.0 50.0NUFlu=
BIN
USRBIN 0.0 -50.0 100.0 100.0&
USRBIN 10.0 4-HELIUM -45.0 50.0 50.0 50.0NuFlu=
BCA
USRBIN -50.0 -50.0 -50.0 200.0 200.0 200.0&
USRTRACK -1.0 4-HELIUM -51.0 INPH 73584.9 50.0 PROFL=
U
USRTRACK 0.02 0.000001 &
USRTRACK -1.0 PHOTON -52.0 INPH 73584.9 50.0 PHOFL=
U
USRTRACK 0.02 0.000001 &
* ..+....1....+....2....+....3....+....4....+....5....+....6....+....7....+=
=2E...8
RANDOMIZ 1.
* ..+....1....+....2....+....3....+....4....+....5....+....6....+....7....+=
=2E...8
START 100000.0
STOP
Received on Wed Feb 03 2010 - 09:18:29 CET