Calculation of isotope shifts and relativistic shifts in CI, CII, CIII and CIV

Abstract

We present an accurate ab initio method of calculating isotope shifts and relativistic shifts in atomic spectra. We test the method on neutral carbon and three carbon ions. The relativistic shift of carbon lines may allow them to be included in analyses of quasar absorption spectra that seek to measure possible variations in the fine structure constant, alpha, over the lifetime of the Universe. Carbon isotope shifts can be used to measure isotope abundances in gas clouds: isotope abundances are potentially an important source of systematic error in the alpha-variation studies. These abundances are also needed to study nuclear reactions in stars and supernovae, and test models of chemical evolution of the Universe.

References in corpus (9)

• Limits on the time variation of the electromagnetic fine-structure constant in the low energy limit from absorption lines in the spectra of distant quasars
• Probing the variability of the fine-structure constant with the VLT/UVES
• VLT/UVES constraints on the cosmological variability of the fine-structure constant
• Isotope shift calculations for atoms with one valence electron
• Does the fine structure constant vary? A third quasar absorption sample consistent with varying alpha
• The Chemical Evolution of Mg Isotopes vs. the Time Variation of the Fine Structure Constant
• Space-time variation of the fine structure constant and evolution of isotope abundances
• The alpha-dependence of transition frequencies for some ions of Ti, Mn, Na, C, and O, and the search for variation of the fine structure constant
• The Fine-structure Constant as a Probe of Chemical Evolution and AGB Nucleosynthesis in Damped Lyman-alpha Systems

Cited by in corpus (39)

• Enhanced laboratory sensitivity to variation of the fine-structure constant using highly-charged ions
• Probing new light force-mediators by isotope shift spectroscopy
• Highly charged ions with E1, M1, and E2 transitions within laser range
• AMBiT: A program for high-precision relativistic atomic structure calculations
• Limits on the dependence of the fine-structure constant on gravitational potential from white-dwarf spectra
• Combining configuration interaction with perturbation theory for atoms with large number of valence electrons
• Optical transitions in highly-charged californium ions with high sensitivity to variation of the fine-structure constant
• Critically Evaluated Spectral Data for Neutral Carbon (C I)
• Detection of the $5p-4f$ orbital crossing and its optical clock transition in Pr${}^{9+}$
• Search for a Variation of the Fine Structure around the Supermassive Black Hole in Our Galactic Center
• Optical spectroscopy of complex open 4$d$-shell ions Sn${}^{7+}$-Sn${}^{10+}$
• Laboratory atomic transition data for precise optical quasar absorption spectroscopy
• Isotope Shifts in Beryllium-, Boron-, Carbon-, and Nitrogen-like Ions from Relativistic Configuration Interaction Calculations
• Relativistic corrections to isotope shift in light ions
• Relativistic corrections to transition frequencies of Fe I and search for variation of the fine structure constant
• Isotope shift calculations in Ti II
• Probing fundamental constant evolution with neutral atomic gas lines
• Unexpectedly large difference of the electron density at the nucleus in the 4p ${}^2$P${}_{1/2,3/2}$ fine-structure doublet of Ca${}^{+}$
• Variation of fundamental constants in space and time: theory and observations
• Particle-hole configuration interaction and many-body perturbation theory: application to Hg+
• High-precision ab initio calculations of the spectrum of Lr${}^{+}$
• Atomic calculations and search for variation of the fine structure constant in quasar absorption spectra
• Isotope shifts in ${}^{20,22}$Ne -- Precision measurements and global analysis in the framework of intermediate coupling
• Saturated configuration interaction calculations for five-valent Ta and Db
• HD 62542: Probing the Bare, Dense Core of a Translucent Interstellar Cloud
• Coupled-cluster single-double calculations of the relativistic energy shifts in C IV, Na I, Mg II, Al III, Si IV, Ca II and Zn II
• Ab initio calculations of the spectrum of lawrencium
• Observation of an unexpected negative isotope shift in 229Th+ and its theoretical explanation
• Mid- and far-infrared fine-structure line sensitivities to hypothetical variability of the fine-structure constant
• Atomic transition frequencies, isotope shifts, and sensitivity to variation of the fine structure constant for studies of quasar absorption spectra
• Energy Level Structure of Sn${}^{3+}$ Ions
• Isotope shifts and relativistic shifts of Cr II for study of alpha-variation in quasar absorption spectra
• Critically Evaluated Spectral Data for Singly Ionized Carbon (C II)
• Measuring chemical evolution and gravitational dependence of αusing ultraviolet Fe V and Ni V transitions in white-dwarf spectra
• Parametrical CI+MBPT calculations of Th I energies and $g$-factors for even states
• Precision measurement of the 5 2S1/2 - 4 2D5/2 quadrupole transition isotope shift between 88Sr+ and 86Sr+
• Relativistic frequency shifts in Cr, Ti, Fe, Ni, Ca, Na, and V to search for variation in the fine structure constant
• Relativistic atomic structure calculations in support of spectroscopy
• Sensitivity coefficients to $\alpha$-variation for astrophysically relevant transitions in Ni II