Re: [fluka-discuss]: track averaged LET in a volume

From: Vittorio Boccone <dr.vittorio.boccone_at_ieee.org>
Date: Wed, 3 Dec 2014 14:30:13 +0100

Hi Brandon,
 them I misunderstood what you want to obtain. You want actually to obtain
the LET averaged on all the primary and secondary tracks for all the
particles of the shower generated by the primary event. Am I correct?

Using DOSEQLET you will get back the Q(LET) relation which we use (ICRP60)
where LET= LET(inf) in water.
What you request can be done of course with an user routine.

Vittorio



On Wed, Dec 3, 2014 at 4:01 AM, REDDELL, BRANDON D. (JSC-EV511) <
brandon.d.reddell_at_nasa.gov> wrote:

> Thanks for the reply Vittorio. Yes, I have obtained the stopping power
> tables as you describe, but I don't think that helps me for a volume where
> I have a shower of charged particles passing through a volume, each
> particle having different initial energies and path lengths through the
> volume.
>
> Shouldn't this calculation be available somewhere since FLUKA can
> provide DOSEQLET in a volume? If so, how can I get this LET? Could I score
> both DOSE and DOSEQLET in the same volume, and use these values to get
> average IRCP60 quality factor, then determine track-averaged LET from the
> Q(LET) equations?
>
> Brandon
>
>
> Sent from my iPhone
>
> On Dec 2, 2014, at 3:11 PM, Vittorio Boccone <dr.vittorio.boccone_at_ieee.org>
> wrote:
>
> Dear Brandon,
> the track averaged LET is in principle the stopping power.
>
> You can get the stopping power calculated by FLUKA for each
> material using the DELTARAY. (See Manual 7.1.3.7 of the pdf,
> or 7.12 of the ASCII + references therein)
>
> Best,
> Vittorio
>
> On Tue, Dec 2, 2014 at 4:30 PM, REDDELL, BRANDON D. (JSC-EV511) <
> brandon.d.reddell_at_nasa.gov> wrote:
>
>> Hello,
>>
>>
>>
>> I know how to use USRYIELD to get LET across a surface, is there a way to
>> get track averaged LET over a volume (i.e. Delta-E/pathlength) in FLUKA?
>>
>>
>>
>> Brandon
>>
>
>
Received on Wed Dec 03 2014 - 15:54:30 CET