Date: Wed Aug 22 2007 - 00:16:51 CEST
I do find the slideshow very useful, thank you for pointing out its
existence. One question: if I 'trap' the variable ATRACK in usrdraw, do I
get effectively the same time/age information?
From: Giuseppe Battistoni [mailto:Giuseppe.Battistoni@mi.infn.it]
Sent: Mon 16-Apr-07 08:23
To: Chin MPW Dr (Physics)
Subject: Re: delayed (n, gamma)
Your question can be of general interest for many FLUKA users.
I understand that your need is to look at
the energy spectra of emitted radiation evolving in time after an
irradiation producing isotopes.
If this is the case then I think that a very useful complement to
the existing FLUKA documentation, for you and many other users, is the
the primer on radiation study with FLUKA presented by S. Roelser at one of
the recent meetings of CERN users.
and go to the link of the lecture of March 15th about "Radioactive
Isotopes Production and Decay"
On Thu, 12 Apr 2007 M.Chin@surrey.ac.uk wrote:
> Hi Giuseppe,
> Since my earlier email I have found the lines in FLUKA! Next, I'd like
to get time-dependent spectra. E.g. I'd like to see the gamma spectrum
after every x minutes. Any tip for doing this please?
> From: Chin MPW Dr (Physics)
> Sent: Wed 11-Apr-07 22:02
> To: Giuseppe Battistoni
> Subject: RE: Fwd: delayed (n, gamma)
> Hi Giuseppe,
> I'm looking for gamma lines such as:
> 1.78 MeV from 27Al(n,g)28Al, half-life 2.3 m
> 0.847, 1.811 and 2.113 MeV from 55Mn(n,g)56Mn, half-life 2.6 h
> 1.369 and 2.754 MeV from 23Na(n,g)24Na, half-life 15 h
> 0.479 and 0.686 MeV from 186W(n,g)187W, half-life 23.9 h
> 0.511 and 0.564 MeV from 121Sb(n,g)122Sb, half-life 28 d
> 1.346 MeV from 63Cu(n,g)64Cu as well as 65Cu(g,n)64Cu, half-life 12.7 h
> 0.511 MeV from 63Cu(g,n)62Cu, half-life 9.7 m
> 1.378 and 1.92 MeV from 58Ni(g,n)57Ni, half-life 36 h
> Thanks very much.
> From: Giuseppe Battistoni [mailto:Giuseppe.Battistoni@mi.infn.it]
> Sent: Tue 10-Apr-07 09:19
> To: firstname.lastname@example.org
> Cc: email@example.com
> Subject: Re: Fwd: delayed (n, gamma)
> Can you be a little bit more explicit on what you really would like to
> If you mean delayed emission of neutrons:
> it is true that we do not produce them in FLUKA, but there is
> no particular difficulty behind that. Their inclusion is part of our
> project of improvement of the neutron library and we hope to achieve that
> goal, soon or later.
> If you are instead interested in gamma emission after neutron capture,
> then this is already included in FLUKA.
> Giuseppe Battistoni
> On Mon, 9 Apr 2007, firstname.lastname@example.org
> > Hello,
> > I understand that FLUKA doesn't simulate delayed (n,gamma). Some other
Monte Carlo codes don't simulate this either, although one is
beginning to implement it. May I know why... is there any specific
difficulty... what is the issue...
> > 1. Cross sections availability? I thought the cross sections are known?
> > 2. Implementation into sampling algorithm(s)?
> > 3. The process being negligible? I imagine not.
> > Just seeking some education. Thanks very much.
> > :) mary
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