Re: Implantation

Dear Andrzej,

you are dealing with a 3MeV/n Kr beam in copper, so cards like PHOTONUC,
LAM-BIAS, and MUPHOTON are completely irrelevant (you are not going to
get muons, bremsstrahlung photons nor primary ion interactions). On the
other hand you should lower the ion transport threshold, setting the
alpha's one down to 40KeV (it's just a reference value) and this way
adopting 10keV/n for every heavier ion. Moreover, single scattering (by
MULSOPT with SDUM=GLOBAL) should be recommended.

NEVERTHELESS, with the actual version you will not obtain meaningful
results for micron range beams like yours, as you already observed [with
a much higher threshold of 1MeV/n]. The inclusion of nuclear stopping
power, which becomes important at VERY low energies, is being developed
and with that we get the same value as SRIM (by J.P. Biersack and J.F.
Ziegler) which predicts a 13um range (and 0.5um both for longitudinal and
lateral straggling).

Kind regards

Francesco

**************************************************
Francesco Cerutti
CERN-EN/STI
CH-1211 Geneva 23
Switzerland
tel. ++41 22 7678962
fax ++41 22 7668854

On Fri, 25 Sep 2009, Andrzej Wojciechowski wrote:

> Dear FLUKA users
> I tray to calculate the distribution of implanted Kr ions in thin Cu
> target usind RESNUCLEi command. I do not understand why the
> Res-NU15,Res-Nu16,Res_nu17 detectors shows 0 and Res-Nu18 shows 0.9
> (see attachment)?
> What I have done badly?
> Kind regards
> Andrzej
>
>
Received on Thu Oct 01 2009 - 19:09:00 CEST