Investigation of the high-frequency Stark effect on lithium atoms by laser-induced fluorescence

Rebhan, Ulrich

doi:10.1088/0022-3700/19/23/007

Cited by 13 publications

(5 citation statements)

References 15 publications

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“…2p-4f), allowing for the determination of such fields. Indeed, such measurements have been employed in several experiments [1][2][3][4][5]. For relatively low electric fields ( 20 kV/cm), the 4d-4f mixing coefficient is inversely proportional to the energy separation between the 4d and 4f levels.…”

Section: Introductionmentioning

confidence: 99%

“…The wavelength given by Johansson results in E 4f = 36628.4 cm −1 . In several popular data compilations [6][7][8][9][10], the value of E 4f based on the Paschen measurement is used 3 . On the other hand, the Johansson measurement was used to infer the E 4f value by Lindgård and Nielsen for the preparation of their transition probability tables [16].…”

Section: Introductionmentioning

confidence: 99%

“…All wavelengths are given in air 3. It should be noted that[9] and[10] refer to an unpublished work by R. L. Kelly[15], who, apparently, used Paschen's data.…”

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confidence: 99%

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Determination of the Li I 4d–4f Energy Separation Using Active Spectroscopy

Tsigutkin¹,

Stambulchik²,

Maron³

et al. 2005

Phys. Scr.

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An accurate knowledge of the Li i 4d-4f energy separation is essential for the determination of electric fields, as is pursued using several modern diagnostic techniques. However, there is a rather large spread in the values of this quantity in the available data sources. We have measured the Li i 4d-4f energy separation using a technique that combines laser-induced-fluorescence with the utilization of collisional excitations. The plasma used for these measurements is laser-produced, which allows for selection of an electron-density range for which line shifts due to the plasma microfields are sufficiently small. An observation of the forbidden 2p-4f line provides the information on the microfields that allows for accounting for the Stark-shifts and evaluating the 4d-4f energy separation in the field-free limit. A comparison of the measured value with a few previous measurements allows for resolving the uncertainties in this quantity.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Determination of the Li I 4d–4f Energy Separation Using Active Spectroscopy

Tsigutkin¹,

Stambulchik²,

Maron³

et al. 2005

Phys. Scr.

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“…The advantages of the lithium atomic system for electric fields measurements have been previously demonstrated [13,14,15]. Lithium was employed for measurements of electric fields in dilute plasmas of gas discharges [16,17] and in the vacuum gap of a high-voltage diode [18].…”

Section: The Diagnostic Methodsmentioning

confidence: 99%

Electric fields in plasmas under pulsed currents

et al. 2007

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Electric fields in a plasma that conducts a high-current pulse are measured as a function of time and space. The experiment is performed using a coaxial configuration, in which a current rising to 160 kA in 100 ns is conducted through a plasma that prefills the region between two coaxial electrodes. The electric field is determined using laser spectroscopy and line-shape analysis. Plasma doping allows for three-dimensional spatially resolved measurements. The measured peak magnitude and propagation velocity of the electric field is found to match those of the Hall electric field, inferred from the magnetic-field front propagation measured previously.

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“…This effect is explained in the classical approach by the modulation of the atomic electron frequency by microwave frequency. The relative amplitude of the satellites enables us to determine the amplitude of the high-frequency electric field [21], figure 7.…”

Section: Spectroscopy Satellites Of Spectral Linesmentioning

confidence: 99%

Optical diagnostics for plasma physics and accelerator science: commonalities and differences

Meshkov¹

2016

Plasma Phys. Control. Fusion

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Optical diagnostics are widely used both for experiments of plasma physics and for measurements of parameters of electron/positron beams in accelerators. The approaches applied for these often have the same methodological basis explained by the similarity of the properties of the studied phenomena. Nevertheless, these branches of physics are very specific and require special diagnostics. The possibility of closed contacts and cooperation between scientists solving similar problems in different areas of physics helps to overcome these problems. It is especially typical for BINP SB RAS known by pioneering works on electronpositron colliders and nuclear fusion. This paper describes the diagnostics that are used in plasma physics experiments, especially for plasma heating by a high-current electron beam, and contains a comparison with optical diagnostics which are recognized tools in colliders and storage rings.

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Investigation of the high-frequency Stark effect on lithium atoms by laser-induced fluorescence

Cited by 13 publications

References 15 publications

Determination of the Li I 4d–4f Energy Separation Using Active Spectroscopy

Determination of the Li I 4d–4f Energy Separation Using Active Spectroscopy

Electric fields in plasmas under pulsed currents

Optical diagnostics for plasma physics and accelerator science: commonalities and differences

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