A precision measurement of the hyperfine structure of87Sr+

With the development of microwave atomic clocks, the Zeeman shifts for the spectral lines of black-body radiation need to be investigated carefully. In this Letter, the frequency shifts of hyperfine splittings of atomic ground states due to the magnetic field of black-body radiation are reported. The relative frequency shifts of different alkali atoms and alkali-like ions, which could be candidates of microwave atomic clocks, were calculated. The results vary from −0.977 × 10 −17 [T (K)/300] 2 to −1.947 × 10 −17 [T (K)/300] 2 for different atoms considered. These results are consistent with previous work but with greater precision, detailed derivations, and a clear physical picture. PACS.No more than four PACS codes should be provided

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“…The data required concerning the atomic structure are cited from Refs. [18][19][20][21]. The results are listed in Table 2.…”

Section: Resultsmentioning

confidence: 99%

Theoretical investigation of the black-body Zeeman shift for microwave atomic clocks

et al. 2019

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“…Briefly, the hyperfine interaction transfers a part of population in some M J state to the other M J state. As for the produced Sr ϩ ion, the hyperfine energy splittings of both 2 S 1/2 and 2 P 1/2 states 23,24 are smaller than the probe laser bandwidth and the inverse of the spontaneous decay time of the upper 2 P 1/2 state. Therefore, the hyperfine interaction of Sr ϩ ions upon electron-spin polarization measurement can be safely neglected.…”

Section: ͑11͒mentioning

confidence: 95%

Electron-spin polarization of photoions produced through photoionization from the laser-excited triplet state of Sr

Yonekura

Nakajima

Matsuo

et al. 2004

The Journal of Chemical Physics

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We report the detailed experimental study on the production of electron-spin-polarized Sr+ ions through one-photon resonant two-photon ionization via laser-excited 5s5p 3P1 (MJ = +1) of Sr atoms produced by laser-ablation. We have experimentally confirmed that the use of laser-ablation for the production of Sr atoms prior to photoionization does not affect the electron-spin polarization. We have found that the degree of electron-spin polarization is 64+/-9%, which is in good agreement with our recent theoretical prediction. As we discuss in detail, we infer, from a simple analysis, that photoelectrons, being the counterpart of electron-spin-polarized Sr+ ions, have approximately the same degree of electron-spin polarization. Our experimental results demonstrate that the combined use of laser-ablation technique and pulsed lasers for photoionization would be a compact and effective way to realize a pulsed source for spin-polarized ions and electrons for the studies of various spin-dependent dynamics in chemical physics.

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“…where s in is the spin of the inner 5s electron. The hyperfine coupling constant can be extracted from the ionization limit yielding a 5s −1.0005 GHz [33] [see discussion following Eq. ( 7)].…”

Section: Theoretical Approachmentioning

confidence: 99%

Spectroscopy of Sr87 triplet Rydberg states

et al. 2018

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A combined experimental and theoretical spectroscopic study of high-n, 30 n 100, triplet S and D Rydberg states in 87 Sr is presented. 87 Sr has a large nuclear spin, I = 9/2, and at high-n the hyperfine interaction becomes comparable to, or even larger than, the fine structure and singlet-triplet splittings which poses a considerable challenge both for precision spectroscopy and for theory. For high-n S states, the hyperfine shifts are evaluated non-perturbatively taking advantage of earlier spectroscopic data for the I = 0 isotope 88 Sr, which results in good agreement with the present measurements. For the D states, this procedure is reversed by first extracting from the present 87 Sr measurements the energies of the 3 D1,2,3 states to be expected for isotopes without hyperfine structure ( 88 Sr) which allows the determination of corrected quantum defects in the high-n limit. arXiv:1808.05987v1 [physics.atom-ph]

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A precision measurement of the hyperfine structure of87Sr+

Cited by 25 publications

References 8 publications

Theoretical investigation of the black-body Zeeman shift for microwave atomic clocks

Theoretical investigation of the black-body Zeeman shift for microwave atomic clocks

Electron-spin polarization of photoions produced through photoionization from the laser-excited triplet state of Sr

Spectroscopy of Sr87 triplet Rydberg states

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