Laboratory measurements of the millimeter-wave spectra of calcium isocyanide

Timothy Steimle, Shuji Saito, Shuro Takano

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The 28 absorption features in the 130-170 GHz spectral region have been measured and assigned as fine-structure components of 14 pure rotational transitions of calcium isocyanide (CaNC) in its (0, 0, 0) Χ 2Σ+ state. The spectrum was analyzed using a standard Hamiltonian model for a linear molecule, and the resulting spectroscopic parameters were used to predict the transition frequencies and Einstein A-coefficients. The determined parameters are (in MHz) B = 4040.742(14), D = 4.96(3) × 10-3 H = 4.1(3) × 10-7, L = -6.0(13) × 10-11, M = 5.3(20) × 10-15, γ = 18.03(12), γD = -3.2(13) × 10-5, where the numbers in parentheses are 3 σ error estimates.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume410
Issue number1 PART 2
StatePublished - Jun 10 1993

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wave spectrum
millimeter waves
calcium
fine structure
coefficients
estimates
molecules
laboratory
parameter

Keywords

  • ISM: molecules
  • Line: identification
  • Molecular data

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Laboratory measurements of the millimeter-wave spectra of calcium isocyanide. / Steimle, Timothy; Saito, Shuji; Takano, Shuro.

In: Astrophysical Journal, Vol. 410, No. 1 PART 2, 10.06.1993.

Research output: Contribution to journalArticle

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abstract = "The 28 absorption features in the 130-170 GHz spectral region have been measured and assigned as fine-structure components of 14 pure rotational transitions of calcium isocyanide (CaNC) in its (0, 0, 0) Χ 2Σ+ state. The spectrum was analyzed using a standard Hamiltonian model for a linear molecule, and the resulting spectroscopic parameters were used to predict the transition frequencies and Einstein A-coefficients. The determined parameters are (in MHz) B = 4040.742(14), D = 4.96(3) × 10-3 H = 4.1(3) × 10-7, L = -6.0(13) × 10-11, M = 5.3(20) × 10-15, γ = 18.03(12), γD = -3.2(13) × 10-5, where the numbers in parentheses are 3 σ error estimates.",
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AB - The 28 absorption features in the 130-170 GHz spectral region have been measured and assigned as fine-structure components of 14 pure rotational transitions of calcium isocyanide (CaNC) in its (0, 0, 0) Χ 2Σ+ state. The spectrum was analyzed using a standard Hamiltonian model for a linear molecule, and the resulting spectroscopic parameters were used to predict the transition frequencies and Einstein A-coefficients. The determined parameters are (in MHz) B = 4040.742(14), D = 4.96(3) × 10-3 H = 4.1(3) × 10-7, L = -6.0(13) × 10-11, M = 5.3(20) × 10-15, γ = 18.03(12), γD = -3.2(13) × 10-5, where the numbers in parentheses are 3 σ error estimates.

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