Bug #2354

Core math: Nontrivial scattering pattern at zero contrast

Added by wuttke over 1 year ago. Updated 2 months ago.

Status:RejectedStart date:13 May 2019
Priority:UrgentDue date:
Assignee:-% Done:

0%

Category:-
Target version:-

Description

rm -r ~/.config/BornAgain.
Start fresh GUI session.
New project.
Sample: drag and drop standard "hexagonal lattice with basis".
Simulation: Run simulation.
Job View Activity > Real Time Activity.
According to the tree view, "Air" has delta=0, beta=0.
Double-click "Particle" delta, draw slider to 0.
Double-click "Particle" beta, draw slider to 0.
There remains a nontrivial scattering pattern, though there
is no longer any contrast between particle and air.

History

#1 Updated by herck over 1 year ago

  • Status changed from New to Rejected

Tested on my system. Everything works as expected: zero contrast -> zero intensity

#2 Updated by wuttke over 1 year ago

  • Status changed from Rejected to Sprint

Problem is reproducible on my computer.

#3 Updated by wuttke over 1 year ago

  • Description updated (diff)

#4 Updated by wuttke over 1 year ago

  • Description updated (diff)

#5 Updated by wuttke 2 months ago

  • Subject changed from Nontrivial scattering pattern at zero contrast to Core math: Nontrivial scattering pattern at zero contrast
  • Status changed from Sprint to Backlog

#6 Updated by wuttke 2 months ago

  • Status changed from Backlog to Rejected

Probably, I overlooked that one needs to specify particle and substrate material. When both are set to beta=delta=0, there is no scattering.

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