Re: MULSOPT question

Hi Thomas

there is an example (gas bremsstrahlung) on the web site, look at it!

           Ciao
          Alfredo

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| Alfredo Ferrari || Tel.: +41.22.76.76119 |
| CERN-EN/STI || Fax.: +41.22.76.69474 |
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On Tue, 17 Nov 2009, Thomas Otto wrote:

> Dear experts,
>
> The manual states:
>
> Complete suppression of multiple scattering can be useful in
> some particular cases, for instance when replacing a gas of
> extremely low density by a gas of the same composition but of
> much larger density in order to increase the frequency of
> inelastic interactions or bremsstrahlung reactions (of course,
> the results must then be scaled by the density ratio). In such
> a case, one should also select the biased density so that
> no re-interaction of secondaries can take place.
>
> How exactly can I select the biased density, and does the density
> scaling has to reflect the physical density difference, which may be
> huge (12 orders of magnitude between standard pressure and some
> accelerator vacua).
>
> Maybe somebody has an example for electron interactions in a rarefied
> gas ?
>
> Thank you for clarification,
> Thomas
>
>
> Thomas OTTO
> Head, Dosimetry Service
> Radiation Protection Accelerators Meyrin
>
> DG-SCR
> CERN
> 1211 Gen=E8ve 23
> Switzerland
>
Received on Wed Nov 18 2009 - 15:01:41 CET