Rectangular Slits with Polygonal Caps

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All distances in micrometers (μm). N=4 is a plain rectangle; N=6,8,10 add polygonal caps.

Geometry & Source

Number of sides (N, even) 4

Slit length (Z, long side) 120 μm

Slit height (Y, small side) 18 μm

Slit depth (X / wall thickness) 30 μm

Slit center separation (Y) 55 μm

Source distance from wall 200 μm

Screen distance from wall 500 μm

Emission rate 600 /s

Randomize particle speed

Min speed 800 μm/s

Max speed 2200 μm/s

Particle-particle collisions

N=4 rectangle · N=6 pointed cap · N=8 3-segment cap · N=10 4-segment cap (approaches a stadium). Long top/bottom edges keep length L; only the short ends get subdivided.