Hello,
Let us know exactly what worries you.
Should it be the fact that the Bremsstrahlung continuum appears
decoupled from characteristic lines in the first plot, consider the
following exercise.
If you reduce (increase) the width of the Pb slab you will see the onset
of the Bremsstrahlung continuum shift to lower (higher) photon energies,
mainly as a consequence of less (more) photon absorption. Keep an eye on
the transport and delta-ray production thresholds as well.
Regarding the characteristic line structure, at first glance it seems
reasonable inasfar as the K edge of Pb is around ~80 keV and the L1 edge
is around ~10 keV.
If what worries you are the units, check the *_sum.lis to examine which
cross section was used to normalize results so as to eventually report
the requested d^2sigma/dx1dx2.
For the same reason as previously noted in e.g.
https://pcfluka.mi.infn.it/FLUKA/web_archive/earchive/new-fluka-discuss/4289.html
it may make more sense for you to score a double differential yield
(d^2N/dx1dx2 instead of d^2sigma/dx1dx2) in the electron-irradiation
case.
Cheers,
Cesc
On Sun, Jul 21 2019, at 16:14 +0800, 李立华 wrote:
>
>Dear fluka experts:
>
> i used option "usryield" to produce double different cross-section of (e,photon),but the results seems wrong,
>
>but i used option "usryield" to produce double different cross-section of (p,n),the results agree with experimental data.
>
>so i doubt a bug in using the option "usryield".
--
Francesc Salvat Pujol
CERN-EN/STI
CH-1211 Geneva 23
Switzerland
Tel: +41 22 76 64011
Fax: +41 22 76 69474
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Received on Mon Jul 22 2019 - 18:27:48 CEST