Dear Anna,
I set MATERIAL hydrogen card with what(6)=1.0.
All double proton states disappeared.
Thanks a lot
Vladimir
Anna Ferrari writes:
> Dear Vladimir,
>
> I see that your target is made of natural hydrogen. Natural hydrogen
> contains around 0.01% of deuterium and a reasonable possibility is that
> the reactions you observe when you use a K+ beam - where all the quantum
> numbers (charge, strangeness) are conserved but apparently the baryon one
> - are reactions on deuterium. To check this I would try to do a test with
> pure hydrogen (you can define it by using a MATERIAL card with what(6)=1.0
> to overwrite -or define as new material- your HYDROGEN material; if you
> use a different name and neutrons are important in your problem remember
> in this case to set the correspondence between FLUKA materials and
> low-energy neutron cross section via the LOW-MAT card, I would do this in
> any case).
>
> Hope it helps,
> kind regards,
> Anna
>
> Am Tue, 15 Apr 2014 15:38:50 +0400 schrieb matveev_at_itep.ru:
>>
>>
>> Dear Fluka Developers, In my test a K+ was entered the liquid hydrogen
>> volume at 0.5 GeV/c.
>> The parameters of the material were set to Z=1, A=1.00794, density=0.078.
>> The statistics was 1M beams.
>> Using mgdraw.f (entry usdraw) output I see 5 events in final state
>> K0,p,p (npart=3,kpart=24,1,1) and 9 events in K+,n,p state. I tested a
>> kaonzero (id=24) beam as well.
>> The usdraw gives me either code 100 K0,p final state
>> or code 101 K+,n state.
>> This seems to be reasonable. Could you please explain the result with K+.
>> Sincerely,
>> Vladimir
>>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Anna Ferrari
> Institute of Radiation Physics
> Helmholtz-Zentrum Dresden-Rossendorf e.V.
> Tel. +49 351 260 2872
> a.ferrari_at_hzdr.de
> http://www.hzdr.de
>
> Vorstand: Prof. Dr. Dr. h. c. Roland Sauerbrey, Prof. Dr. Dr. h. c. Peter
> Joehnk
> Vereinsregister: VR 1693 beim Amtsgericht Dresden
>
Vladimir Matveev
matveev_at_itep.ru
Received on Mon Apr 21 2014 - 16:53:28 CEST