Re: USRYIELD estimators

dear Alberto,

yes I have plotted it in log scale (the spectrum is attached). my problem
is why I didn't get the peak for the fast neutron, do I need to introduce
somthething else to my input file? it is the first time for me to use
USRYIELD estimators.

Regards,
Buthaina

> Hi Adam,
>
> have you tried to plot you spectrum on a log scale for abscissae?
> Probably most neutrons are evaporation neutrons, with energies
> 1-2 MeV. On a linear scale, they are all squeezed in a narrow interval
> about 1% of the whole scale
>
> Alberto
>
> On Fri, 9 May 2008, Buthaina Abdalla Suleiman Adam wrote:
>
>> Dear FLUKA user,
>>
>> I am using USRYIELD estimator to score neutron fluence (double
>> differential) produced from the interaction of 200 MeV (kinetic energy)
>> proton beam with a thin target of Be-9 (1.2cm). The inputfile is
>> attached.
>> The result I obtained are not what I expected e.g the neutron spectrum
>> (see attached file) shows a trend which is opposite of what is expected.
>> I
>> will be grateful for your input.
>>
>>
>> Kind Regards,
>> Buthaina Adam
>>
>>
>>
>
> --
> Alberto Fasso`
> SLAC-RP, MS 48, 2575 Sand Hill Road, Menlo Park CA 94025
> Phone: (1 650) 926 4762 Fax: (1 650) 926 3569
> fasso@slac.stanford.edu
>