Re: Geomagnetic Rigidity Cut-off

Dear Turgay

I assume that you refer to the vertical rigidity cut-off.

You would have to sample uniformly the direction of the primary particle
on top of the atmosphere. Having this direction and the vertical cutoff
you can compute the nonvertical cut-off according to the Stoermer-approach
(you may have to transform the direction from the geographic into the
geomagnetic coordinate frame before). Finally, you sample the energy
between the lowest value according to the (non-vertical) rigidity cutoff
and any upper limit from the distribution on top of the atmosphere (i.e.
interstellar fluence modulated by solar activity).

Cheers
Stefan

On Wed, 4 Aug 2010, turgaykorkut_at_hotmail.com wrote:

>
> Dear FLUKA users,
>
>
> I have prepared an input file in connection with cosmic rays.
> I want to obtain muon flux at sea-level as a function of geomagnetic rigidity cut-off.
> How should I entered geomagnetic rigidity cut-off values in my input file?
>
> Thanks and best wishes.
>
> Dr.Turgay KORKUT
> turgaykorkut_at_hotmail.com
>
>
>
>
Received on Mon Aug 09 2010 - 15:07:11 CEST