epraya.Fieldframe#

Fieldframe(vectors, direction, S, I)#

Pass the eigenvectos to the basis quantized along the static field direction. Pass from the molecular frame to the field frame to define the high field labels (|ms,mi>), assuming the basis refer to the z axis of the molecular frame. To make the rotation uses the Euler-Rodrigues formula with exp(-theta u·(S+I))

Parameters:

  • vectors (np.array) – Eigenvectors (columns) in the basis quantized along z.

  • direction (array) – Direction of the static magnetic field.

  • S (float) – Electron spin value.

  • I (float) – Nuclear spin value

Returns:

Rt (np.array) – Eigenvectors in the basis quantized along the field direction.