Re: Question concerning relation between USRBDX and USRYIELD scoring

Hi Ray

yes it should.. You question seems to suggest that it does not in your
case(?)

For the integration of the USRYIELD data please note comment 6) in the
manual
           6) In the case of polar angle quantities (|ie| or |ia| = 14,15,
              17,18,24,25) the differential yield is always referred to
              solid angle in steradian, although input is specified in
              radian or degrees.

that is sometimes overlooked.

Cheers
Stefan

On Tue, 13 Nov 2012, Ray F. Cowan wrote:

> Hi,
>
> I have a novice-level question regarding the relation between scoring by
> USRBDX and that of USRYIELD.
>
> The question: if I define a USRBDX detector to score photon 1-way current
> exiting a region, and I define a USRYIELD detector to score the angular
> distribution of photons w.r.t. the beam axis exiting the same region, will
> the integrals of the two distributions be equal (that is, both show that
> the same number of photons exited the region) when the double differential
> distributions are properly integrated w.r.t. angles, energy bin widths, etc?
>
> TO be specific, I am using a very simple geometry: a TARGET region (aluminum)
> surrounded by a VOID region (vacuum) surrounded by a blackbody region. The
> primary particles are 100 MeV electrons incident on the target.
>
> My USRBDX and USRYIELD cards are shown below.
>
> Any comments or suggestions would be appreciated.
>
> Thank you,
> --Ray
>
>
>
>> USRBDX -1. PHOTON -52. TARGET VOID 1.0phoCur
>> USRBDX 1.0E-5 100.0 1.0&
> (I have set a 10 keV (1.0E-5 GeV) EMFCUT cutoff for photons).
>
>> USRYIELD 114. PHOTON -53. TARGET VOID 1.0phoYldA
>> USRYIELD 3.14159 0.0 50.0 0.1 0.0 3.&
>
>
>
>
>
>
Received on Wed Nov 14 2012 - 14:54:40 CET