copper bombarded by 10 MeV proton

Dear all,

I want to record the total number of neutrons from copper bombarded by
proton of different energy. I find from Exfor that the cross sections of
cu65(p,n)zn65 is not zero,
but when I do simulation with fluka, no neutron is emitted. Below is my
input file, could somebody give me some help=A3=BF=20

Thanks
Yuanjie

* ..+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
TITLE Cu collimator 72 MeV proton
* ..+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
BEAM -0.01 -0.0 -0.0 -0.0 -0.0 PROTON
BEAMPOS 0.0 0.0 0.0
GEOBEGIN COMBNAME
    0 0 A Cu collimator
RPP body1 -5000000.0 +5000000.0 -5000000.0 +5000000.0 -5000000.0 +5000000.0
RPP body2 -1000000.0 +1000000.0 -1000000.0 +1000000.0 -100.0 +1000000.0
RCC elli 0.0 0.0 1. 0.0 0.0 0.024 0.3
END
* black hole
regBH1 5 +body1 -body2
* vacuum around
regVA2 5 +body2 -elli
regIn 5 +elli
END
GEOEND
* External Black Hole
ASSIGNMA BLCKHOLE regBH1
* Vacuum
ASSIGNMA VACUUM regVA2
ASSIGNMA COPPER regIn
LOW-NEUT 260.
USRBIN 10. NEUTRON -60. 3. 3. 3.fie
USRBIN -3. -3. 0.0 30. 1. 30.&
* Boundary crossing fluence in the middle of the target (log intervals, one-way)
USRBDX 101. NEUTRON -47.0 regIn regVA2 1.0piFluenUD
USRBDX 0.1 0.0 100. &
* Boundary crossing current in the middle of the target (log intervals, one-way)
USRBDX 1. NEUTRON -48. regIn regVA2 1.0piCurrUD
USRBDX 0.1 0.0 100. &
* ..+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
RANDOMIZ 1.0
* ..+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
START 1000000.0 0.0
STOP
Received on Wed Jun 09 2010 - 09:18:00 CEST