3He polarization in dependence of wavelength?

[astellhorn]

• Would it be better to (i) take a mean popt for all wavelength, or (ii) compute it just for one wavelength, or (iii) have single parameters for all wavelength?
• Maybe can use reduce_dims=['wavelength'] of the scipp.curve_fit (see example)
• related to branch 'calculation-he3-polarization'

[SimonHeybrock]

Conclusion:

• Yes, we want wavelength-independent params.
• Just do a 2-D fit.