Lifetime measurement of the cesium<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>6</mml:mn><mml:msub><mml:mi>P</mml:mi><mml:mrow><mml:mn>3</mml:mn><mml:mo>/</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>state using ultrafast laser-pulse excitation and ionization

Sell, Jerry; Ehrenreich, T.; Brooke, George M.; Scoville, James; Knize, R. J.

doi:10.1103/physreva.84.010501

Cited by 23 publications

(15 citation statements)

References 20 publications

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“…As there is only one spontaneous decay channel 6p j → 6s 1/2 for each of the 6p j states, experimentally measured lifetimes of the states can be used to determine the transition matrix elements. Table IV lists the presently calculated lifetimes of the 6p 1/2 and 6p 3/2 states together with other experimental results [32,37,49,[53][54][55][56]. The present RCICP lifetime of the 6p 1/2 state is smaller than the experimental result [32] by about 0.6%.…”

Section: B Dipole Transition Matrix Elementsmentioning

confidence: 45%

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Tune-out wavelengths of the hyperfine components of the ground level of $^{133}$Cs atoms

Jiang,

Li,

Wang

et al. 2020

Preprint

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The static and dynamic electric-dipole polarizabilities and tune-out wavelengths for the ground state of Cs atoms are calculated by using a semiempirical relativistic configuration interaction plus core polarization approach. By considering the hyperfine splittings, the static and dynamic polarizabilities, hyperfine Stark shifts, and tune-out wavelengths of the hyperfine components of the ground level of 133 Cs atoms are determined. It is found that the hyperfine shifts of the first primary tune-out wavelengths are about −0.0135 nm and 0.0106 nm, which are very close to the hyperfine interaction energies. Additionally, the contribution of the tensor polarizability to the tune-out wavelengths is determined to be about 10 −5 ∼ 10 −6 nm.

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Section: B Dipole Transition Matrix Elementsmentioning

confidence: 45%

“…For the 6p 3/2 state, the present lifetime agrees well with the experimental results from Refs. [37,49,[53][54][55], while it is smaller than the experimental results of Tanner et al [56] and of Rafac et al [32] just by about 0.3%.…”

Section: B Dipole Transition Matrix Elementsmentioning

confidence: 52%

Tune-out wavelengths of the hyperfine components of the ground level of $^{133}$Cs atoms

Jiang,

Li,

Wang

et al. 2020

Preprint

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“…Another method to explore the situation experimentally is to use one laser pulse to excite F@C 60 by inducing an electron transfer and another pulse to ionize the hybrid levels to probe excited state cross sections. Such two-color two-step photoionization measurement techniques have been used earlier [42][43][44]. Based on this technique, an electron can be selectively promoted from a chosen C 60 level, namely C 60 HOMO or a hybrid level, to form metastable configurations.…”

Section: Experimental Possibilitiesmentioning

confidence: 99%

Electron vacancy-level dependent hybrid photoionization of the F⁻@ C60+ molecule: a novel effect

Ali¹,

Taylor²,

Dennis³

et al. 2022

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

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Our previous studies [J. Phys. B 53, 125101 (2020); Euro. Phys. J. D 74, 191 (2020)] have predicted that the atom-fullerene hybrid photoionization properties for X = Cl, Br and I endohedrally conﬁned in C60 are diﬀerent before and after an electron transfers from C60 to the halogen. It was further found as a rule that the ionization dynamics is insensitive to the C60level the electron originates from to produce X−@C60+ . In the current study, we report an exception to this rule in F@C60. It is found that when the electron vacancy is situated in the C60level that participates in the hybridization in F−@C60+, the mixing becomes dramatically large leading to strong modiﬁcations in the photoionization of the hybrid levels. This novel eﬀect is fundamentally based on a level-crossing phenomenon driven by the electron transfer in F@C60. But when the vacancy is at any other pure level of C60, the level-invariance is retained showing weak hybridization. Even though this case of F@C60 is an exception in the halogen@C60 series, the phenomenon can be more general and can occur with compounds of other atoms caged in a variety of fullerenes. Possible experimental studies are suggested to benchmark the present results.

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“…The femtosecond laser technology allows to perform the highly accurate pump-probe atomic lifetime measurements. In particular, the so-called pump-probe technique has been used already in the lifetime measurements of the 6P 3/2 excited-state in cesium atom which is relevant to the atomic parity non-conservation [12,13]. In contrast to neutral atoms, transitions to excited states in ions quickly reach the XUV-or X-ray energy range and, therefore, for the pumping and/or probing processes a high-photon flux of XUV-or X-ray sources is required.…”

Section: Introductionmentioning

confidence: 99%

High-precision calculations of the $1s^{2} 2s 2p$ $^1P_{1} \to 1s^{2} 2s^{2}$ $^1S_{0}$ spin-allowed $E1$ transition in C {\small III}

Bilal,

Volotka,

Beerwerth

et al. 2019

Preprint

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Large-scale relativistic calculations are performed for the transition energy and line strength of the 1s 2 2s2p 1 P1 − 1s 2 2s 2 1 S0 transition in Be-like carbon. Based on the multiconfiguration Dirac-Hartree-Fock (MCDHF) approach, different correlation models are developed to account for all major electron-electron correlation contributions. These correlation models are tested with various sets of the initial and the final state wave functions. The uncertainty of the predicted line strength due to missing correlation effects is estimated from the differences between the results obtained with those models. The finite nuclear mass effect is accurately calculated taking into account the energy, wave functions as well as operator contributions. As a result, a reliable theoretical benchmark of the E1 line strength is provided to support high precision lifetime measurement of the 1s 2 2s2p 1 P1 state in Be-like carbon.

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Lifetime measurement of the cesium6P3/2state using ultrafast laser-pulse excitation and ionization

Cited by 23 publications

References 20 publications

Tune-out wavelengths of the hyperfine components of the ground level of $^{133}$Cs atoms

Tune-out wavelengths of the hyperfine components of the ground level of $^{133}$Cs atoms

Electron vacancy-level dependent hybrid photoionization of the F⁻@ C60+ molecule: a novel effect

High-precision calculations of the $1s^{2} 2s 2p$ $^1P_{1} \to 1s^{2} 2s^{2}$ $^1S_{0}$ spin-allowed $E1$ transition in C {\small III}

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Lifetime measurement of the cesium6P3/2state using ultrafast laser-pulse excitation and ionization

Cited by 23 publications

References 20 publications

Tune-out wavelengths of the hyperfine components of the ground level of $^{133}$Cs atoms

Tune-out wavelengths of the hyperfine components of the ground level of $^{133}$Cs atoms

Electron vacancy-level dependent hybrid photoionization of the F−@ C60+ molecule: a novel effect

High-precision calculations of the $1s^{2} 2s 2p$ $^1P_{1} \to 1s^{2} 2s^{2}$ $^1S_{0}$ spin-allowed $E1$ transition in C {\small III}

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Electron vacancy-level dependent hybrid photoionization of the F⁻@ C60+ molecule: a novel effect