fermi¶
- romanisim.persistence.fermi(x, dt, A, x0, dx, alpha, gamma)¶
The Fermi model for persistence: A * (x/x0)**alpha * (t/1000.)**(-gamma) / (exp(-(x-x0)/dx) + 1) For influence level below the half well, the persistence is linear in x.
- Parameters:
- xnp.ndarray[float]
Fluence level (electrons)
- dtnp.ndarray[float]
Time since exposure (s)
- Afloat
Amplitude parameter of persistence (electrons)
- x0float
Pivot fluence (electrons)
- dxfloat
dx parameter (electrons)
- alphafloat
Power law index scaling with fluence
- gammafloat
Power law index scaling with time
- Returns:
- The persistence signal at the current time for the persistence-affected pixels
- described by persistence.