Eval15 stills
Intensity of one simulated xray
L0
F0
X0
M0
θ = asin( 0.5*L0*|M0| )
inray = (F0-X0)/L0
η = 0.5*π - angle(inray,M0)
ε = θ - η
α = ncell*sumhkl*π*ε/tan(θ)
eff = 1/(2*sin²(θ) * sin²(α)/α²
The c-vector is the normal of the reflection plane. The c-vector
is defined in the laboratory (xyz) system.
For still images, the c-vector is calculated from the orientation matrix,
the reflection indices and the goniostat position.
Available matrices:
Available vectors:
At impact position:
θ and η
This uses the vector construct cimp-inray.
The angle with the primary beam is between 2*η and 2*θ
This generates an outray with an angle of 2*η with the primary beam.
The reflection plane acts as a mirror, although the length of the c-vector
does not fulfill Braggs law.
This generates an outray with an angle of 2*θ with the primary beam
Calculate both outrayη and
outrayθ. The definitive
impact is calculated as
f is the value of flex.
(1-f)*outrayη +
f*outrayθ
If f=0.0 the result coincides with the η-impact.
If f=1.0 the result coincides with the θ-impact.
outray to impact
Eval15
Eval15 commands