example core shell: more expressive local vars

Examples/scatter2d/CoreShellNanoparticles.py

@@ -21,19 +21,15 @@ def get_sample():
     ff_2 = ba.Box(16*nm, 16*nm, 8*nm)
 
     # Define particles
-    particle_1 = ba.Particle(material_Core, ff_1)
-    particle_2 = ba.Particle(material_Shell, ff_2)
+    core = ba.Particle(material_Core, ff_1)
+    shell = ba.Particle(material_Shell, ff_2)
 
     # Define core shell particles
-    particle_3 = ba.ParticleCoreShell(particle_2, particle_1)
-
-    # Define interference functions
-    iff = ba.InterferenceNone()
+    particle = ba.ParticleCoreShell(shell, core)
 
     # Define particle layouts
     layout = ba.ParticleLayout()
-    layout.addParticle(particle_3)
-    layout.setInterference(iff)
+    layout.addParticle(particle)
     layout.setTotalParticleSurfaceDensity(0.01)
 
     # Define layers