Re: Transport of decay particles

Hallo

you are referring to decay in the activation study mode (associated to a
cooling times list), not to the semi-analogue mode.
In that case, at the end of each primary history, the produced
radioisotopes are let decay (by default three times each, as in WHAT(3) of
RADDECAY) down to the end of their decay chain. All the so generated
electromagnetic particles are transported (with materials in the geometry
transformed into vacuum or blackhole on request), irrespective of the
input cooling times. At scoring, an analytical weight accounting for the
activity of the emitting radionuclide (the one emitting the gamma/beta
particles under consideration, not necessarily the original one first in
the chain) at the requested cooling time, is applied.

Best

Francesco

On Fri, 3 Aug 2012, Mina Nozar wrote:

> Hello everyone,
>
> I am trying to understand how tracking is done for decay particles. Can someone please explain/clarify the following
> statement (Note 4 under section 7.10 (DCYSCORE) in the manual? Perhaps with an example?
>
> "
> The scoring of decay radiation is different from all the rest: decay particles are transported once, and a factor
> is applied at scoring time depending on the decay time associated to each detector. This factor accounts for
> the buildup and decay of the parent nucleus at the specied decay time. This factor is not available in user
> routines such as fluscw and comscw
> "
>
> Thank you very much,
> Mina
Received on Fri Aug 03 2012 - 11:53:02 CEST