Microwave spectroscopy of the Yb 6s(n+3)d→6sng , 6snh

Abstract

Using a microwave and radio frequency resonance approach we observe the transitions of ytterbium from the 6s(n + 3)d states to the 6snℓ states for 4 ≤ ℓ ≤ 6 and 28 ≤ n ≤ 33. The energies of the 6snℓ states of ℓ ≥ 4 are determined from the observed intervals and the known values of the 6snd energies. We use a non-adiabatic core polarization model to analyze the energy levels to determine the dipole (α d ) and quadrupole (α q ) polarizabilities of the ground state of Yb + . We find the values α d = 60.51(10) a 3 0 and α q = 672(28) a 5 0 .

Ridge regression energy levels calculation of neutral ytterbium (Z = 70)

“…[29] Recently, using microwave and radio frequency resonance methods, Niyaz et al observed the transition of ytterbium from 6s(n + 3)d 1 D 2 → 6snl, 4 ≤ l ≤ 6. [30] Besides experimental observations, many groups have developed new theoretical methods to calculate the structural parameters of Yb atoms. Ternovsky et al [31] applied the method of relativistic many-body perturbation and the Dirac-Kohn-Sham zeroth approximation combined with the generalized relativistic energy method , and calculated the energy and width of the self-ionizing resonance of 4f 14 7s6p, 4f 13 [ 2 F 7/2 ]6s 2 np[5/2] 2 , 4f 13 [ 7 F 7/2 ]6s 2 nf[5/2] 2 .…”

Preparation of Long-Lived, Non-Autoionizing Circular Rydberg States of Strontium

“…In order to overcome this limit, it is mandatory to increase the angular momentum of the Rydberg electron [13]. Up to now, moderately largestates have been produced using microwave transfer [23] or Stark switching methods [24][25][26][27]. These early studies have evidenced the reduction of the autoionization rate with but extending their techniques to > 10 is challenging [28].…”