Isotope-shift and hyperfine-constant measurements of near-infrared xenon transitions in glow discharges and on a metastable<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="normal">Xe</mml:mi><mml:mrow><mml:msup><mml:mrow><mml:mo>(</mml:mo></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mo>)</mml:mo></mml:math>beam

D'Amico, G.; Pesce, Giuseppe; Sasso, Antonio

doi:10.1103/physreva.60.4409

Cited by 29 publications

(19 citation statements)

References 23 publications

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“…From the measurements, the hyperfine coupling constants can be determined by fitting to the usual form (see, e.g., ref. [18]):…”

Section: Resultsmentioning

confidence: 99%

“…Xenon has two naturally occurring isotopes with nonzero nuclear spin ( 129 Xe (I = 1/2), 131 Xe (I = 3/2)), and the hyperfine level structure has been well-studied in the energy domain at a range of energies with a variety of methods, including fluorescence [13], saturatedamplification [14] and photoionization [15][16][17]; for a more comprehensive overview see ref. [18]. A range of high (energy) resolution ionization experiments incorporating the preparation of high-n Rydberg states have been performed to probe hyperfine splittings in Ryberg manifolds, including autoionizing regions, and in the cation [19,20].…”

Section: Introductionmentioning

confidence: 99%

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Quantum-beat photoelectron-imaging spectroscopy of Xe in the VUV

et al. 2018

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Time-resolved pump-probe measurements of Xe, pumped at 133 nm and probed at 266 nm, are presented.The pump pulse prepared a long-lived hyperfine wavepacket, in the Xe.57 eV). The wavepacket was monitored via single-photon ionization, and photoelectron images measured. The images provide angle-and timeresolved data which, when obtained over a large time-window (900 ps), constitute a precision quantum beat spectroscopy measurement of the hyperfine state splittings. Additionally, analysis of the full photoelectron image stack provides a quantum beat imaging modality, in which the Fourier components of the photoelectron images correlated with specific beat components can be obtained. This may also permit the extraction of isotope-resolved photoelectron images in the frequency domain, in cases where nuclear spins (hence beat components) can be uniquely assigned to specific isotopes (as herein), and also provides phase information. The information content of both raw, and inverted, image stacks is investigated, suggesting the utility of the Fourier analysis methodology in cases where images cannot be inverted.

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“…From the measurements, the hyperfine coupling constants can be determined by fitting to the usual form (see, e.g., ref. [18]):…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quantum-beat photoelectron-imaging spectroscopy of Xe in the VUV

et al. 2018

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“…The interferometer was made out of a quartz tube which has a low thermal expansion coefficient. We tested the stability of the free spectral range as discussed in our previous work (27).…”

Section: Figmentioning

confidence: 99%

Self-, Nitrogen-, and Oxygen-Broadening Coefficient Measurements in the ν1 Band of H2O Using a Difference Frequency Generation Spectrometer at 3 μm

Bruno

Pesce

Rusciano

et al. 2002

Journal of Molecular Spectroscopy

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“…The hyperfine structure of a spectral line can be resolved when overcoming the limitation set by Doppler broadening. In this contribution, a non-linear absorption technique based on selective saturation of individual atomic transitions, the so-called Doppler free, or saturation, spectroscopy method, was applied with the use of a tunable single-mode diode laser [4,5]. A pump beam with wave vector +k is used to create a hole into the velocity distribution function (VDF) of atoms or ions in a resonant state.…”

Section: Doppler-free Spectroscopymentioning

confidence: 99%

“…been measured for several transitions by means of high resolution Doppler-free laser spectroscopy [5]. In this work we investigate the structure of 3 strong near-infrared transitions in xenon gas, one of them being related to Xe + ion.…”

mentioning

confidence: 99%

Doppler-Free Spectroscopy Measurements of Isotope Shifts and Hyperfine Components of Near-IR Xenon Lines

Mazouffre¹,

Pawelec²,

Bich³

et al. 2006

AIP Conference Proceedings

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Xenon is currently used as propellant gas in electric thrusters, in which ejection of corresponding ions produces the desired thrust. As such a gas contains 9 stable isotopes, a non-intrusive determination of the velocity distribution function of atoms and ions in the thruster plasma plume, by means of absorption or fluorescence techniques, requires a precise knowledge of the line structure. We used Doppler-free Lamb-dip spectroscopy to determine isotopic shifts and hyperfine components of odd isotopes of several spectral lines of Xe atom and Xe + ion in the 825 -835 nm range Xenon is currently used as propellant gas in electric thrusters like gridded ion engines and Hall effect thrusters [1]. In view of the performances of electric thrusters in terms of propellant mass savings and efficiency level, such devices are considered as a promising propulsion mean for space missions like platform station keeping and orbit transfer, space probe trajectory correction and long duration human interplanetary journeys [1,2].A Hall Effect Thruster (HET) can be seen as a hollow annular ceramic channel confining a magnetized low pressure DC discharge generated between an external hollow cathode and an anode. Electrons emitted from the cathode are trapped around Larmor orbits and experience an azimuthal drift. The resulting low electron mobility induces a strong electric field that is concentrated in the vicinity of thruster exhaust. The propellant gas, which is fed through the anode, is efficiently ionized by trapped electrons in the downstream region. Created ions are then instantly accelerated along the thruster axis by the local electric field [3]. When operating near 1.3 kW, a HET ejects ions at 20 km/s and generates about 80 mN of thrust with efficiency in excess of 50%.Profound understanding of physical phenomena governing the plasma dynamics inside a HET necessitates to accurately measure physical parameters such as the gas temperature, the magnetic field magnitude during thrusters' operation and especially the ion velocity distribution function. In order not to modify thruster plasma properties, these three quantities must be determined by means of laser-aided diagnostics providing information about Doppler broadening, Doppler shift and Zeeman splitting of xenon atomic and ionic lines. However, due to the existence of numerous Xe isotopes, some with non-zero nuclear spin, such measurements require a precise knowledge of the isotopic and hyperfine structure (HFS) of considered optical transitions. DOPPLER-FREE SPECTROSCOPYThe hyperfine structure of a spectral line can be resolved when overcoming the limitation set by Doppler broadening. In this contribution, a non-linear absorption technique based on selective saturation of individual atomic transitions, the so-called Doppler free, or saturation, spectroscopy method, was applied with the use of a tunable single-mode diode laser [4,5]. A pump beam with wave vector +k is used to create a hole into the velocity distribution function (VDF) of atoms or ions in a resonant state...

show abstract

Isotope-shift and hyperfine-constant measurements of near-infrared xenon transitions in glow discharges and on a metastableXe(3P2)beam

Cited by 29 publications

References 23 publications

Quantum-beat photoelectron-imaging spectroscopy of Xe in the VUV

Quantum-beat photoelectron-imaging spectroscopy of Xe in the VUV

Self-, Nitrogen-, and Oxygen-Broadening Coefficient Measurements in the ν1 Band of H2O Using a Difference Frequency Generation Spectrometer at 3 μm

Doppler-Free Spectroscopy Measurements of Isotope Shifts and Hyperfine Components of Near-IR Xenon Lines

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