From: Vasilis Vlachoudis (Vasilis.Vlachoudis@cern.ch)
Date: Thu Mar 01 2007 - 15:01:15 CET
Dear Ecran
the BME module which is supposed to do the transport of heavy ions down
to 10 MeV/n is not in the official distribution. Probably will be
available in the next release. Therefore with 20 MeV/n you are only
doing dE/dx and for air 5cm, the 90% that escapes the system is quite
reasonable, the expected stopping range in air should be of the order of
~30cm.
Regards
Vasilis
-----Original Message-----
From: owner-fluka-discuss@fisica.unimi.it
[mailto:owner-fluka-discuss@fisica.unimi.it] On Behalf Of Ercan Pilicer
Sent: Wednesday, 28 February 2007 21:38
To: fluka-discuss@fluka.org
Subject: energy loss in air
dear users,
i would like to know that the energy loss of kr-84 heavy ions with
20MeV/n in 5cm air thickness could be around 1GeV? in *.out file i
have noticed that;
1.6783E+00 (100.%) GeV available per beam particle divided into
Prompt radiation Radioactive decays
1.5394E-01 ( 9.2%) 0.0000E+00 ( 0.0%) GeV hadron and muon dE/dx
0.0000E+00 ( 0.0%) 0.0000E+00 ( 0.0%) GeV electro-magnetic showers
0.0000E+00 ( 0.0%) 0.0000E+00 ( 0.0%) GeV nuclear recoils and
heavy fragments
0.0000E+00 ( 0.0%) 0.0000E+00 ( 0.0%) GeV particles below
threshold
0.0000E+00 ( 0.0%) 0.0000E+00 ( 0.0%) GeV residual excitation
energy
0.0000E+00 ( 0.0%) 0.0000E+00 ( 0.0%) GeV low energy neutrons
1.5244E+00 (90.8%) 0.0000E+00 ( 0.0%) GeV particles escaping the
system
0.0000E+00 ( 0.0%) 0.0000E+00 ( 0.0%) GeV particles discarded
0.0000E+00 ( 0.0%) 0.0000E+00 ( 0.0%) GeV particles out of time
limit
2.9104E-15 ( 0.0%) GeV missing
by the way, i am following the same steps given in battistoni's
example to calculate boundary crossing energies. it says to me average
1524MeV per 1675MeV heavy ions leaves from 5cm air.
could that be possible? thanks in advance.
ciao
ercan
=======================
Ercan Pilicer
High Energy Physics Department
Uludag University, Turkey
=======================
This archive was generated by hypermail 2.1.6 : Thu Mar 01 2007 - 15:45:46 CET