[mcstas-users] Intensity does not decrease while radius increases as to Cd sample

[陈彦舟]

Hi all,

   I've found that the Cd sample has different intensity-radius(I-r) curves in PDC model and in the PSI-DMC model (Neutron site-PSI)(see Fig. 1). I think that the I-r curves trend should be the same. Because the two models have the similar beam spot size and wavelength(see Fig. 2 and Fig. 3)   I checked our model(pdc1 and pdc2) but found nothing wrong. Could somebody please check the PDC model and explain the difference?

I am looking forward your reply. Thank you!

Best regards,

Tom
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