High-resolution studies of the near-ultraviolet bands of oxygen: I: the system

1986 ◽  
Vol 64 (6) ◽  
pp. 717-720 ◽  
Author(s):  
D. A. Ramsay
Keyword(s):  
High Resolution ◽  
Molecular Constants ◽  
Near Ultraviolet

Ten new bands of the [Formula: see text] system of oxygen have been found using longer absorption paths than in the earlier work of Herzberg (1953). Rotational assignments and molecular constants are given for all bands from ν′ = 1–16. The principal constants for the [Formula: see text] state are as follows:[Formula: see text]

High-resolution studies of the near-ultraviolet bands of oxygen: II: the system

1986 ◽  
Vol 64 (6) ◽  
pp. 721-725 ◽  
Author(s):  
P. M. Borrell ◽  
P. Borrell ◽  
D. A. Ramsay
Keyword(s):  
High Resolution ◽  
Molecular Constants ◽  
Near Ultraviolet

Bands of the [Formula: see text] system of oxygen have been re-examined using longer absorption paths and higher resolution than in the early work of Herzberg (1952). More accurate values are given for the molecular constants v0, B, D, λ, and γ for levels with v′ = 0–11. The principal constants for the [Formula: see text] state are as follows:[Formula: see text]

High-resolution studies of the near-ultraviolet bands of oxygen: III: the system

1986 ◽  
Vol 64 (6) ◽  
pp. 726-732 ◽  
Author(s):  
B. Coquart ◽  
D. A. Ramsay
Keyword(s):  
High Resolution ◽  
Electron Configuration ◽  
Rotational Analysis ◽  
Molecular Constants ◽  
Rotational Constants ◽  
Near Ultraviolet ◽  
Path Lengths

Ten bands of the [Formula: see text] system of oxygen have been observed in absorption using longer path lengths than in the earlier work of Herzberg (1953). Rotational analysis of the bands confirms that the A′ 3Δu state is an inverted state as expected from electron-configuration arguments. Rotational assignments are given for the [Formula: see text] and [Formula: see text] sub-bands with ν′ = 2–11; weaker [Formula: see text] sub-bands are identified for ν′ = 5–11. Sub-band origins and rotational constants are given for all the bands. The following derived molecular constants are obtained:[Formula: see text]A comparison of the frequencies of the diffuse bands of oxygen with the sub-band origins of the [Formula: see text] bands shows convincingly that the diffuse bands can be assigned to a weak (O2)2 complex in which one of the O2 molecules is excited to the A′ 3Δu state.

High resolution studies of the system of 13C-formaldehyde

1979 ◽  
Vol 57 (10) ◽  
pp. 1676-1680 ◽  
Author(s):  
F. W. Birss ◽  
R. M. Gordon ◽  
D. A. Ramsay ◽  
S. M. Till
Keyword(s):  
Absorption Spectrum ◽  
High Resolution ◽  
Type B ◽  
Molecular Constants ◽  
Text Type ◽  
Type C

The absorption spectrum of H213CO has been photographed in the region 3600 to 3000 Å under high resolution. Rotational analyses have been carried out for four bands, viz., [Formula: see text], [Formula: see text], [Formula: see text] (Type B), and [Formula: see text] (Type C), and molecular constants are given. Several perturbations have been found and possible mechanisms discussed.

High-resolution laser-excitation spectrum of the A2Π ← X2Σ system of TiN: rotational analysis of the 0–0, 1–1, and 2–2 bands

1985 ◽  
Vol 63 (7) ◽  
pp. 997-1004 ◽  
Author(s):  
K. Brabaharan ◽  
J. A. Coxon ◽  
A. Brian Yamashita
Keyword(s):  
High Resolution ◽  
Least Squares ◽  
Excitation Spectrum ◽  
Laser Excitation ◽  
Rotational Analysis ◽  
Molecular Constants ◽  
Individual Bands ◽  
Measured Line ◽  
Line Positions ◽  
Π State

The 0–0, 1–1, and 2–2 bands of the A2Π ← X2Σ system of TiN have been recorded using the technique of laser-excitation spectroscopy. Molecular constants have been obtained from direct least squares fits of the measured line positions of individual bands. The fitted constants confirm and extend previous determinations; for the A2Π state, some of the constants show unusually large variations with ν, in accord with the already known perturbation of this state in the ν = 0 level.

Sub‐Doppler high‐resolution spectroscopy and the Zeeman effect of CS2 in the near ultraviolet

1994 ◽  
Vol 100 (5) ◽  
pp. 3394-3406 ◽  
Author(s):  
Kiyoshi Nishizawa ◽  
Shunji Kubo ◽  
Atsushi Doi ◽  
Hajime Katô
Keyword(s):  
High Resolution ◽  
Zeeman Effect ◽  
High Resolution Spectroscopy ◽  
Near Ultraviolet

Rotational Analysis of the A2Π–X2Σ+ Band System of the BeBr Molecule

1975 ◽  
Vol 53 (14) ◽  
pp. 1321-1326 ◽  
Author(s):  
M. Carleer ◽  
M. Herman ◽  
R. Colin
Keyword(s):  
High Resolution ◽  
Hollow Cathode ◽  
Band System ◽  
Rotational Analysis ◽  
Molecular Constants ◽  
Bromine Vapor

A rotational analysis has been performed on the 0–0 band of the A2Π–X2Σ+ transition of the BeBr molecule photographed at high resolution in emission from a beryllium hollow cathode in the presence of bromine vapor. The following principal molecular constants have been determined:[Formula: see text]

Electronic spectra of metal ion – rare gas pairs: High resolution analysis of the A2Πr–X2Σ+ system of BeKr+

1977 ◽  
Vol 55 (3) ◽  
pp. 254-260 ◽  
Author(s):  
J. A. Coxon ◽  
W. E. Jones ◽  
K. V. Subbaram
Keyword(s):  
High Resolution ◽  
Metal Ion ◽  
Isotope Effects ◽  
Spin Splitting ◽  
Rare Gas ◽  
Molecular Constants ◽  
Naturally Occurring ◽  
High Resolution Analysis ◽  
Resolution Analysis ◽  
Splitting Constant

The A2Πr–X2Σ+ system of Be84Kr+ has been studied at high resolution in the region 3950–4265 Å. Rotational analyses have been performed for the 0–1, 0–0, 1–0, and 2–0 bands, and molecular constants have been determined by least squares fits of the line frequencies to model Hamiltonians. The regular nature of the excited state has been confirmed, despite the opposite signs found for the Λ-doubling constants, p and q. Comparisons of the Λ-doubling constants for the A2Πr state and of the spin-splitting constant (γ) for the X2Σ+ state have been made with those for other nine valence-electron diatomics. Although a systematic study of isotope effects due to the several isotopes of naturally-occurring krypton has not been possible, at least one branch of the 1–0 band of Be86Kr+ has been identified unequivocally.

The magnetic dipole a1Δg → X3Σg− transition in the oxygen afterglow

1981 ◽  
Vol 59 (10) ◽  
pp. 1391-1398 ◽  
Author(s):  
C. Amiot ◽  
J. Verges
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Magnetic Dipole ◽  
Molecular Constants ◽  
First Time ◽  
Microwave Data

The magnetic dipole a1Δ →X3Σg− transition has been observed for the first time during the recombination of 16O atoms in an afterglow. The spectrum of the 0–0 band has been recorded with a high resolution Fourier transform interferometer. Accurate molecular constants, obtained by combining ir and microwave data, are given for the a1Δg and X3Σg− (ν = 0) electronic levels.

High-Resolution Infrared Spectrum of Diazirine, H2CN2. Rovibrational Analysis of the Methylene Deformation Band

1988 ◽  
Vol 43 (4) ◽  
pp. 331-337 ◽  
Author(s):  
A. Gambi ◽  
A. Baldacci ◽  
S. Giorgianni
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Infrared Spectrum ◽  
Least Squares ◽  
Deformation Band ◽  
Fourier Transform Spectrometer ◽  
Centrifugal Distortion ◽  
Molecular Constants ◽  
Centrifugal Distortion Constants

Abstract The infrared spectrum of diazirine has been recorded at Doppler resolution with a high informa­tion Fourier transform spectrometer. The ν3 fundamental has been reinvestigated and the overall assignment of the rovibrational transitions has been carried out. From the least-squares analysis a more accurate set of molecular constants including the sextic centrifugal distortion constants has been determined for the level υ3 = 1 and will be reported here. The higher resolution achieved here allowed the assignment of weaker lines and many Q branch transitions. Moreover many blended lines have now been resolved and could be properly assigned.

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