From: Yuanjie BI (biyuanjie@tsinghua.org.cn)
Date: Mon Jun 04 2007 - 11:06:17 CEST
Hi Fluka users,
I am reserching the radioactivity of a thin carbon foil bombed by 100MeV proton.
The production of Be7 calculated by FLUKA is 2.03E+11Bq/cmc, but my analytic
result using the cross section of 13mb is 1.95E+12Bq/cmc.
I have checked the input many times and can't find the reason,is my input file
correct ?
By the way, how could I know the cross section used by FLUKA?
Many thanks for your help
Best regards
Yuanjie Bi
-------------------------------------------------------------------------------
TITLE
C foil bombarded by 100MeV protons
GLOBAL 1.0 1.0
DEFAULTS NEW-DEFA
BEAM -0.1 0.5 0.8 PROTON
BEAMPOS 0.0 0.0 -0.0001
PHYSICS 3.0 EVAPORAT
PHYSICS 1.0 COALESCE
GEOBEGIN COMBNAME
0 0 C foil inside vacuum
* Black body
RPP blkbody -500.0 500.0 -500.0 500.0 -500.0 500.0
* void
RPP void -100.0 100.0 -100.0 100.0 -10.0 100.0
* target
RPP target -1.0 1.0 -1.0 1.0 0.0 6.66D-05
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 CARBON TARGET
LOW-NEUT 1.0
EMF EMF-OFF
DISCARD ELECTRON POSITRON PHOTON MUON+ MUON- PIZERO
LAM-BIAS 0.0002 CARBON PROTON NEUTRON 7.0INEALL
LOW-BIAS 73.0 72.0 0.85 VOID TARGET 1.0
RADDECAY 1.0 3.0 0.0 99999
IRRPROFI 3691008.0 1.248D+15
DCYTIMES 0.0 28800.0 86400.0 604800.0 2592000.0 10368000.
DCYSCORE 1.0 A A RESNUCLE
RESNUCLE 1.0 -21.0 TARGET 0.000266A
DCYSCORE 2.0 B B RESNUCLE
RESNUCLE 1.0 -22.0 TARGET 0.000266B
RANDOMIZ 1.0
START 1.D8 0.0
STOP
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