Interferometric measurement of resonance transition wavelengths in C IV, Si IV, Al III, Al II, and Si II

Abstract

We have made the first interferomeric measurements of the wavelengths of the important ultraviolet diagnostic lines in the spectra \ion{C}{4} near 155 nm and \ion{Si}{4} near 139 nm with a vacuum ultraviolet Fourier transform spectrometer and high-current discharge sources. The wavelength uncertainties were reduced by one order of magnitude for the \ion{C}{4} lines and by two orders of magnitude for the \ion{Si}{4} lines. Our measurements also provide accurate wavelengths for resonance transitions in \ion{Al}{3}, \ion{Al}{2}, and \ion{Si}{2}.

6 pages, 2 figures, 1 table

References in corpus (3)

• A Search for Time Variation of the Fine Structure Constant
• Space-Time Variation of Physical Constants and Relativistic Corrections in Atoms
• Calculations of the Relativistic Effects in Many-Electron Atoms and Space-Time Variation of Fundamental Constants

Cited by in corpus (22)

• Further Evidence for Cosmological Evolution of the Fine Structure Constant
• Further evidence for a variable fine-structure constant from Keck/HIRES QSO absorption spectra
• Possible evidence for a variable fine structure constant from QSO absorption lines: motivations, analysis and results
• Spatial variation in the fine-structure constant -- new results from VLT/UVES
• Probing the cosmological variation of the fine-structure constant: Results based on VLT-UVES sample
• Possible evidence for a variable fine structure constant from QSO absorption lines: systematic errors
• On the variation of the fine-structure constant: Very high resolution spectrum of QSO HE 0515-4414
• Critically Evaluated Spectral Data for Neutral Carbon (C I)
• Does the fine structure constant vary? A third quasar absorption sample consistent with varying alpha
• Probing the time-variation of the fine-structure constant: Results based on Si IV doublets from a UVES sample
• Chemical abundances in quasar host galaxies and environments from narrow absorption line systems
• Laboratory atomic transition data for precise optical quasar absorption spectroscopy
• Extended and Revised Analysis of Singly Ionized Tin: Sn II
• Structure and Dynamics of the Accretion Process and Wind in TW Hya
• Modelling the chromosphere and transition region of Epsilon Eri (K2 V)
• Atomic transition frequencies, isotope shifts, and sensitivity to variation of the fine structure constant for studies of quasar absorption spectra
• Critically Evaluated Spectral Data for Singly Ionized Carbon (C II)
• Size estimates for intervening C IV absorbers from high resolution spectroscopy of APM 0827+5255
• A study of velocity fields in the transition region of Epsilon Eri (K2 V)
• Laser spectroscopy of the ${}^2{S}_{1/2}{-}^2{P}_{1/2}$, ${}^2{P}_{3/2}$ transitions in stored and cooled relativistic C${}^{3+}$ ions
• Spectra of Ni V and Fe V in the Vacuum Ultraviolet
• Deep absorption in SDSS J110511.15+530806.5