Isotope Shift and Hyperfine Structure Measurements in Xe II in a Laser-Ion Beam Experiment

Abstract

Hyperfine structure of the transition 5d4D7/2-6p4P05/2 in Xe II is measured for the isotopes 129,131Xe, and h.f.s. coupling constants A and B are evaluated for the 6p4P05/2 level. Isotope shifts in the same transition are measured for 128,129,130,131,134,136Xe relative to 132Xe utilizing Lambdip technique in a beam-laser experiment. The field shifts are evaluated yielding relative changes δ ⟨r2⟩ of mean-square charge radii.

Investigation of the formation of the near- and far-field distributions of the radiation emitted by platelet microlasers

“…As can be seen in their table 1, in the case of the 5p 4 5d 4 D 7/2 state there are no inconsistencies among four available experimental values, since error bars of all four measurements overlap, and the above-mentioned average is dominated by a highly accurate value obtained by Rosner et al [20]. On the other hand, the three most accurately measured values of B for the 5p 4 6p 4 P 5/2 state are slightly inconsistent, and our weighted average, 117.5(18) MHz, is in good agreement with two of them (which also happen to be close to each other), but falls marginally outside the error bars quoted by the third, obtained by Alvarez et al [21]. As can be seen from tables 1-4, within the 1% convergence criterion adopted in the present study, the Sternheimer correction [45] is recovered when five layers of virtual orbitals and about 5000 configuration state functions are included.…”

“…Four levels have been selected, for which sufficiently accurate experimental values of hyperfine electric quadrupole constants B have previously been determined by Holt et al [19], Rosner et al [20], Alvarez et al [21], Borghs et al [22], Bingham et al [23], and more recently by Broström et al [24], who used the fast ion-beam-laser method. Faust and McDermott [25] measured the hyperfine intervals of the metastable 5p 5 6s 3 P 2 state of neutral xenon using the atomic beam magnetic resonance method.…”

Hyperfine structures and isotope shifts of the 5d 4 D 7/2?6p 4 P 5/2 0 transition in Xenon ions

“…A comparison of our results for 12SXe up to a36Xe with earlier experiments shows reasonable agreement with [3] but disagreement with [1]. In the second part of Table 2, these earlier results are presented as quoted in [1] and [3]. From King plots of our isotope shifts with those of several transition lines in the atomic spectrum of Xe [8], the electronic factor as well as the mass shift factor for the 5d4D7/2~6p4Ps~ transition were obtained: (notation according to Heilig and Steudel [9]) Ei=0.068_+0.008 and M~=-828+17GHz.…”

“…Total shifts minus doppler shifts resulted in the isotope shifts, given in the second column of Table 2. A comparison of our results for 12SXe up to a36Xe with earlier experiments shows reasonable agreement with [3] but disagreement with [1]. In the second part of Table 2, these earlier results are presented as quoted in [1] and [3].…”

Wavelengths and oscillator strengths of Xe II from the UVES spectra of four HgMn stars

“…This hypothesis seems us to be more relastic than that of some isotopic anomaly for Xe . For instance, using the isotopic wavelengths from Alvarez et al (1979), excluded that the blueshift of 0.03 Å observed for the Xe ii line at 6051.15 Å can be due to some isotopic anomaly. Instead, because no isotopic composition was considered in our computations, owing to the lack of isotopic wavelengths for Xe ii, we could explain the larger astrophysical log g f -value than the experimental one obtained for a few lines with the presence of the xenon isotopes, which should not be neglected in the computations of the strongest Xe ii line profiles.…”