Dear expert:
i wanna detect the gamma ray generate by low-erergy neutron(14MeV), and I follow the manual and using EMF\PHYSICS\LOW-NEUT card, but there is no gamma ray produced. Input data is shown below.
In addition, my Fluka version is 4-3.3, and there are no any low-energy neutron libraries installed, is this reason?
Thanks!
TITLE
*Set the defaults for precision simulations
DEFAULTS PRECISIO
*Define the beam characteristics
BEAM -0.014 NEUTRON
*Define the beam position
BEAMPOS 0 0 1
EMF
PHYSICS 1 COALESCE
PHYSICS 3 EVAPORAT
LOW-NEUT 0
GEOBEGIN COMBNAME
0 0
*Black body
SPH blkbody 0.0 0.0 0.0 55
*Void sphere
SPH void 0.0 0.0 0.0 50
*Cylindrical target
RCC target 0.0 0.0 -20 0.0 0.0 20 20
END
*Black hole
BLKBODY 5 +blkbody -void
*Void around
VOID 5 +void -target
*Target
TARGET 5 +target
END
GEOEND
*..+....1....+....2....+....3....+....4....+....5....+....6....+....7..
ASSIGNMA BLCKHOLE BLKBODY
ASSIGNMA VACUUM VOID
ASSIGNMA WATER TARGET
USRTRACK 1 PHOTON -21 TARGET 100AS
USRTRACK 1E-2 1E-6 &
*Set the random number seed
RANDOMIZ 1.0
*Set the number of primary histories to be simulated in the run
START 200000
STOP
