Beam-laser lifetime measurements of Yb ii energy levels

Pinnington, E. H.; Berends, R. W.; Ji, Qing

doi:10.1103/physreva.50.2758

Cited by 17 publications

(16 citation statements)

References 10 publications

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“…Most likely, the set of configurations used to form the wave function of the 2 D J states is not sufficiently large (even for the biggest CI space that we have considered) to correctly reproduce their properties. [35], see also explanation in the text.…”

Section: B Hfs Constants E1 Transition Amplitudes and Other Observmentioning

confidence: 88%

“…The values are compared with the experimental and other theoretical [13,15,16] results. [35], see also explanation in the text.…”

Section: Parity-nonconserving Amplitudementioning

confidence: 88%

“…We compare these results with the values listed in Table II obtained using the single-electron method. We will discuss the results obtained for the largest [35], see also explanation in the text.…”

Section: B Hfs Constants E1 Transition Amplitudes and Other Observablesmentioning

confidence: 96%

“…At the present time, the most precise measurement of the 2 P o 3/2 lifetime, τ ( 2 P o 3/2 ) = 6.15 (9) ns, was carried out in [35]. The 2 P o 3/2 state mainly decays by the E1 transitions to the 2 S 1/2 , 2 D 3/2 , and 2 D 5/2 states.…”

Section: B Magnetic Dipole Hfs Constants and E1 Transition Amplitudesmentioning

confidence: 97%

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Correlation effects in Yb+and implications for parity violation

2012

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Calculation of the energies, magnetic dipole hyperfine structure constants, E1 transition amplitudes between the low-lying states, and nuclear spin-dependent parity-nonconserving amplitudes for the 2 S 1/2 -2 D 3/2,5/2 transitions in 171 Yb + ion is performed using two different approaches. First, we carried out many-body perturbation theory calculation considering Yb + as a monovalent system. Additional all-order calculations are carried out for selected properties. Second, we carried out configuration interaction calculation considering Yb as a 15-electron system and compared the results obtained by two methods. The accuracy of different methods is evaluated. We find that the monovalent description is inadequate for evaluation of some atomic properties due to significant mixing of the one-particle and the hole-two-particle configurations. Performing the calculation by such different approaches allowed us to establish the importance of various correlation effects for Yb + atomic properties for future improvement of theoretical precision in this complicated system.

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Section: B Hfs Constants E1 Transition Amplitudes and Other Observmentioning

confidence: 88%

“…The values are compared with the experimental and other theoretical [13,15,16] results. [35], see also explanation in the text.…”

Section: Parity-nonconserving Amplitudementioning

confidence: 88%

Section: B Hfs Constants E1 Transition Amplitudes and Other Observablesmentioning

confidence: 96%

Section: B Magnetic Dipole Hfs Constants and E1 Transition Amplitudesmentioning

confidence: 97%

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Correlation effects in Yb+and implications for parity violation

2012

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“…Since then, precise lifetime measurements with cascade-free selective laser excitation, such as beam-laser (Berends et al 1993, Pinnington et al 1994, 1997 and laser-induced fluorescence (Lowe et al 1993), have become available.…”

Section: Introductionmentioning

confidence: 99%

Lifetime measurements in Yb II with time-resolved laser spectroscopy

Li¹,

Svanberg²,

Quinet

et al. 1999

J. Phys. B: At. Mol. Opt. Phys.

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Abstract. Natural radiative lifetimes of 10 levels of singly ionized ytterbium have been measured with time-resolved laser spectroscopy. Free Yb + ions were produced in a laser-induced plasma. A stimulated Brillouin scattering technique has been used to produce laser pulses as short as 1 ns for the excitation of short-lived Yb + states. Pseudo-relativistic Hartree-Fock calculations, taking into account the core-polarization effects, have also been performed. A good agreement of the measured and the calculated lifetime values has been achieved.

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State change, quantum probability, and information in operational phase-space measurement

Ban

1997

Int J Theor Phys

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State change, quantum probability, and information gain in the operational phasespace measurement are formulated by means of positive operator-valued measure (POVM) and operation. The properties of the operational POVM and its marginal POVM which yield the quantum probability distributions of the measurement outcomes obtained by the operational phase-space measurement are investigated. The Naimark extension of the operational POVM can be expressed in terms of the relative-position states and the relative-momentum states in the extended Hilbert space. An observable quantity measured in the operational phase-space measurement becomes a fuzzy or unsharp observable. The state change of a physical system caused by the operational phase-space measurement is described by the operation which is obtained explicitly for the position and momentum measurements and for the simultaneous measurement of position and momentum. Using the results, the entropy change of the measured physical system and the information gain in the operational phase-space measurement are investigated. It is found that the average value of the entropy change is equal to the Shannon mutual information extracted from the outcomes exhibited by the measurement apparatus.

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Beam-laser lifetime measurements of Yb ii energy levels

Cited by 17 publications

References 10 publications

Correlation effects in Yb+and implications for parity violation

Correlation effects in Yb+and implications for parity violation

Lifetime measurements in Yb II with time-resolved laser spectroscopy

State change, quantum probability, and information in operational phase-space measurement

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