Hyperfine structure in 5s 4d 3 D —5snf transitions of87Sr

Abstract

Abstract. The hyperfine spectra of the 5s4d3D~-5s20f, 5s4d3D2-5s23f and 5s4d3D3-5s32f transitions of 87Sr (I = 9/2) have been measured by collinear fast beam laser spectroscopy. The structure in the upper configurations is highly perturbed by fine structure splitting that is of comparable size to the hyperfine interaction energy. These perturbations can be adequately treated with conventional matrix diagonalization methods, using the 5 selectron magnetic dipole interaction term as~ and the unperturbed fine structure splittings as input parameters. Additionally, hyperfine constants for the lower 5s4d3D configurations, including the A-and B-factors and a separation of the individual s-and d-electron contributions to these factors, are derived.

Effect of87Sr hyperfine structure on the isotope selective excitation of89Sr and90Sr isotopes in collinear resonance ionization spectroscopy

“…By normalizing the hyperfine intensities with the computed fine structure intensities and relative frequency shifts, we obtain the relative intensities and frequency positions of all the 74 HFS components (table 2) and the resultant spectrum is plotted in figure 1. The HFS of the 3 (figure 1) was in agreement with the experimental spectrum of Bushaw et al [15], barring a few discrepancies.…”

“…For high lying Rydberg levels the f-electron screening effects will be negligibly small. Therefore, for 5snf Rydberg states the nf electron contribution to the A, B factors is much less than 1 MHz [15]. Hence, the terms involving a l+1/2 , a l−1/2 , b l+1/2 and b l−1/2 could be ignored for high lying 5s32f Rydberg states.…”

“…The c ij are the j expansion coefficients for the ith eigenvector of a particular F value in the upper configuration. The relative intensities of the fine structure components have been computed using equation (15) for the 5s4d 3 D 3 -5s32f transition. The relative intensities were found to be 0.25, 8.64 and 100% for the 3 D 3 -3 F 2 , 3 D 3 -3 F 3 and 3 D 3 -3 F 4 transitions, respectively.…”

Reevaluation of the nuclear electric quadrupole moment for 87Sr by hyperfine structures and relativistic atomic theory

“…D 1,2,3[41], 5s5d 1 D 2[34], 5s6d 3 D 1,2,3[42], 5s6p 1,3 P 1[40], 5p4d 1 D 2[40] states, but their error bars are much larger than the Q value obtained in this work. Therefore, we would like…”

Rapid Trace Analysis of 89'90Sr in Environmental Samples by Collinear Laser Resonance Ionization Mass Spectrometry

“…The statistical error is limited by counting statistic, but is usually much smaller. The analysis of the 89 Sr content in a sample is complicated due to its complex hyperfine splitting in the optical spectra [22], which is caused by the nuclear spin of I( 89 Sr) = 5/2. The efficiency for narrow band width optical excitation is hence reduced by at least one order of magnitude.…”