Sr88_S1_Vaillant2024

class rydstate.species.strontium.sr88_vaillant2024_k_matrix_model_data.Sr88_S1_Vaillant2024(mqdt)

5sns 3S1 model fitted to the data set (b) of the Addendum (high precision data of Couturier 2019 for n >= 13).

The Addendum also gives a fit to the older data set (a) of the 2014 paper, which is not included here.

Parameters:

mqdt (MQDT)

species = 'Sr88'

The species for which the MQDT model is defined.

name = 'S J=1, nu > 3.4'

The name of the atomic species.

f_tot = 1

Total angular momentum f_tot of the Rydberg state.

parity = 1

Parity (-1 or +1) of the Rydberg state, i.e. (-1)^(l_c + l_r) of its channels.

nu_range = (3.4, inf)

Range of effective principal quantum numbers nu for which the MQDT model is valid.

reference = 'C. L. Vaillant, M. P. A. Jones and R. M. Potvliege, J. Phys. B: At. Mol. Opt. Phys. 57, 199401 (2024), https://doi.org/10.1088/1361-6455/ad76f0 (Addendum to J. Phys. B: At. Mol. Opt. Phys. 47, 155001 (2014), https://doi.org/10.1088/0953-4075/47/15/155001)'

Reference for the MQDT model, e.g., a publication doi where the model is described.

outer_channels = [AngularKetLS(i_c=0.0, s_c=0.5, l_c=0, s_r=0.5, l_r=0, s_tot=1.0, l_tot=0, j_tot=1.0, f_tot=1.0, n_c=5), AngularKetLS(i_c=0.0, s_c=0.5, l_c=1, s_r=0.5, l_r=1, s_tot=1.0, l_tot=1, j_tot=1.0, f_tot=1.0, n_c=5)]

List of outer channels in the MQDT model.

k_matrix_entries = [(0, 0, [-103.924403, -27.6691239]), (0, 1, [133.451654]), (1, 1, [-168.045201, 55.1718438])]

Elements of the symmetric K-matrix in the outer channel frame.

Each entry is a tuple (i, j, coefficients) with the indices i <= j of the involved outer channels and coefficients the list of expansion coefficients [K⁽⁰⁾, K⁽¹⁾, …] of the polynomial in the energy variable epsilon (a constant element is a single element list). Only the upper triangle needs to be given, the lower triangle follows from the symmetry of the K-matrix. Elements not given are zero.