Re: Damage

From: Vasilis Vlachoudis <Vasilis.Vlachoudis_at_cern.ch>
Date: Sat, 5 Jun 2010 16:00:39 +0200

Dear Mojdeh,

the generalized particle SI1MEVNE (Silicon 1 MeV Neutron Equivalent
Fluence) gives you the fluence of 1 MeV neutrons producing the same
damage in a silicon detector as induced by an arbitrary particle fluence
with a given energy distribution. It is a quantity often used to
quantify radiation damage in silicon due to NIEL (Non Ionizing Energy
Losses).

However if you want to calculate correctly the NIEL or DPA please give a
look in the talk for DPA

http://info-fluka-discussion.web.cern.ch/info-fluka-discussion/pages/Talks.htm

For the moment the functions and the DPA/NIEL related functionality are
not present in the public release of FLUKA but exist only in the
development version. It will be available in the next release.

Regards
Vasilis

On 06/02/2010 03:40 PM, mojdeh najm wrote:
> Dear Fluka developer and users
>
> I want to calculate damage in silicon device and I knew that with define
> SI1MEVNE in the fluence estimator like USRTRACK, we can calculate
> fluence of "1-MeV n equivalent particle" but i think we must do some
> procedure:
>
> d/E/de/d/x/=integral of(/E/dis d/S) /= /N/A Integral of (/D(E)F(E) /d/E
> )// // /[MeV cmâ??1]/./
>
> /(For getting NIEL)/
>
> /Now my questions are:/
>
> /1) My concept and solution is right or wrong?/
>
> /2) If it is right, for calculation of above formula, it needs damage
> function that I saw it in fluka out file as a library./
>
> /can I use them as damage function? And what's its unit?/
>
> /3) Is it useful for cascade damage or just point defect( both of
> SI1MEVNE and NIEL formula)?/
>
> /Regards/
>
> /Mojdeh Anjom///
>

-- 
-------------------------------------------------------
Vasilis Vlachoudis
Dep. EN-STI-EET
Web: home.cern.ch/bnv
Tel: +41-22-7679851
Fax: +41-22-7669644
-------------------------------------------------------
Received on Sat Jun 05 2010 - 18:14:48 CEST

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