Critically Evaluated Spectral Data for Neutral Carbon (C I)

Abstract

In this critical compilation, all known to us experimental data on the spectrum of neutral carbon were methodically evaluated and supplemented by parametric calculations with Cowan's code. The sources of experimental data vary from laboratory to astrophysical objects and employ different instrumentation from classical grating and Fourier transform spectrometers to precise laser spectroscopy setups and various other modern techniques. This comprehensive evaluation provides accurate atomic data on energy levels and wavelengths (observed and Ritz) with their estimated uncertainties, as well as a uniform description of observed line intensities. In total, 412 energy levels were optimized with the help of selected 1221 best observed lines participating in 1365 transitions in the wavelength region 750 Å to 609.14 μm. In addition, 737 possibly observable transitions are predicted. Critically evaluated transition probabilities for 1616 lines are provided, of which 241 are new. With the accurate energy levels obtained, combined with additional observed data on high Rydberg states, the ionization limit was determined to be 90 820.348(9) cm^(-1) or 11.2602880(11) eV in fair agreement with the previously recommended value, but more accurate.

arXiv comment50 pages, 10 tables including a few available in machine-readable format

References in corpus (11)

• Calculation of isotope shifts and relativistic shifts in CI, CII, CIII and CIV
• The Spectrum of Thorium from 250 nm to 5500 nm: Ritz Wavelengths and Optimized Energy Levels
• Interferometric measurement of resonance transition wavelengths in C IV, Si IV, Al III, Al II, and Si II
• Laboratory atomic transition data for precise optical quasar absorption spectroscopy
• Detection of the ^3P_2 - ^3P_1 Submillimeter Transition of 13CI in the Interstellar Medium: Implication for Chemical Fractionation
• An upper limit to the variation in the fundamental constants at redshift z = 5.2
• CNO abundances of HdC and RCB stars: a view of the nucleosynthesis in a white dwarf merger
• Atomic Carbon in the Envelopes of Carbon-Rich Post-AGB Stars
• Extended and Revised Analysis of Singly Ionized Tin: Sn II
• Measuring space-time variation of the fundamental constants with redshifted submillimetre transitions of neutral carbon
• Sensitivity coefficients to $\alpha$-variation for fine-structure transitions in Carbon-like ions

Cited by in corpus (21)

• Carbon depletion observed inside T Tauri inner rims: Formation of icy, kilometer size planetesimals by 1 Myr
• Carbon-rich (DQ) white dwarfs in the Sloan Digital Sky Survey
• High-precision mass spectrometer for light ions
• Developing a self-consistent AGB wind model: II. Non-classical, non-equilibrium polymer nucleation in a chemical mixture
• Extended theoretical transition data in C I - IV
• High-resolution imaging of C + He collisions using Zeeman deceleration and VUV detection
• Studies on the Transcorrelated Method
• Testing the weak equivalence principle by differential measurements of fundamental constants in the Magellanic Clouds
• PDRs4All. X. ALMA and JWST detection of neutral carbon in the externally irradiated disk d203-506: Undepleted gas-phase carbon
• Constraints on the electron-to-proton mass ratio variation at the epoch of reionization
• Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. VIII. Carbon and oxygen
• Critically Evaluated Spectral Data for Singly Ionized Carbon (C II)
• Convexity constraints on linear background models for electron energy-loss spectra
• V4334 Sgr (Sakurai's Object): still churning out the dust
• Theoretical studies of carbon isotopic fractionation in reactions of C with C${}_2$: dynamics, kinetics, and isotopologue equilibria
• Revision of the ionization energy of neutral carbon
• ALMA Datacubes and Continuum Maps of the Irradiated Western Wall in Carina
• Imaging Resonance Effects in C + H${}_2$ Collisions using a Zeeman Decelerator
• [C I] and [C II] emission in the circumstellar envelope of IRC +10216 I. Observational data and NLTE modeling of the [C I] emission
• Electron Impact Fragmentation Dynamics of Carbonyl Sulfide: A Combined Experimental and Theoretical Study
• Computer-predicted ionization energy of carbon within 1 cm${}^{-1}$ of the best experiment