From: Giuseppe Battistoni (Giuseppe.Battistoni@mi.infn.it)
Date: Tue Mar 20 2007 - 12:16:24 CET
Yes, these are heavy fragments.
When there are many of them, they can have id numbers more negative than
-6, depending on threshold.
Paola Sala sends the following lines used in a comscw.f routine to
retrieve the properties (Z,A) of such fragments (see below).
** recoils from proton or neutron int. on nuclei are flagged with jtrack=208.
** some "on spot" electromagnetic . energy depositions have jtrack=211
** --> assign dummy values to charge and mass
IF (JTRACK .GT. 200) THEN
ICH = -10
IB = -10
ELSE IF ( JTRACK .GE. -6 ) THEN
ICH = ICHRGE (JTRACK)
IB = IBARCH (JTRACK)
*** if many heavy fragment are produced they can (depending on threshold)
** carry jtrack = -7, -8, etc
*** standard jtrack for ions is -2
** -3 to -6 are deuterons, tritons,alphas
ICH = ICHEAV (-JTRACK)
IB = IBHEAV (-JTRACK)
On Tue, 20 Mar 2007, Vadim Talanov wrote:
> Dear FLUKA experts,
> this is just an observation: while writing particle properties at some boundary
> crossing, with Jtrack among them, I see the entries with the Jtrack value equal
> to -7 and -8 (few per ~10^8 particles). Do I interpret correctly that these are
> some heavy fission fragments (according to the comment to the Particle names and
> code numbers table)?
> Kind regards, Vadim
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