The Fourth Positive System of Carbon Monoxide Observed in Absorption at High Resolution in the Vacuum Ultraviolet Region

1969 ◽  
Vol 155 ◽  
pp. 345 ◽  
Author(s):  
J. D. Simmons ◽  
Arnold M. Bass ◽  
S. G. Tilford
Keyword(s):  
Carbon Monoxide ◽  
High Resolution ◽  
Vacuum Ultraviolet ◽  
Ultraviolet Region ◽  
Positive System ◽  
Vacuum Ultraviolet Region

Rotational analysis of the forbidden d3 Δi ← X1Σ+ absorption bands of carbon monoxide

1970 ◽  
Vol 48 (24) ◽  
pp. 3004-3015 ◽  
Author(s):  
G. Herzberg ◽  
T. J. Hugo ◽  
S. G. Tilford ◽  
J. D. Simmons
Keyword(s):  
Carbon Monoxide ◽  
High Resolution ◽  
Intensity Distribution ◽  
Vacuum Ultraviolet ◽  
Ultraviolet Region ◽  
Rotational Analysis ◽  
Absorption Bands ◽  
Local Perturbations ◽  
Vacuum Ultraviolet Region ◽  
Π State

The forbidden d3Δi–X1Σ+ transition of CO has been observed in absorption at high resolution in the vacuum ultraviolet region. The intensity distribution in the rotational structure of the observed bands is in conformity with the assumption that the transition occurs on account of the interaction between the d3Δ state and a 1Π state, presumably the A1Π state. Thirteen bands of the d–X system have been analyzed yielding more extensive rotational data for the d3Δi state than were previously known. A discussion of the local perturbations in the d state by the A1Π and a3Π states is included.

THE FORBIDDEN I1Σ−–X1Σ+ ABSORPTION BANDS OF CARBON MONOXIDE

1966 ◽  
Vol 44 (12) ◽  
pp. 3039-3045 ◽  
Author(s):  
G. Herzberg ◽  
J. D. Simmons ◽  
A. M. Bass ◽  
S. G. Tilford
Keyword(s):  
Carbon Monoxide ◽  
Selection Rule ◽  
Vacuum Ultraviolet ◽  
Ultraviolet Region ◽  
Absorption Bands ◽  
Coriolis Interaction ◽  
Dipole Radiation ◽  
Vacuum Ultraviolet Region ◽  
Vibrational Constants ◽  
Π State

The forbidden I1Σ−–X1Σ+ transition of CO has been observed in absorption at high resolution in the vacuum ultraviolet region. As expected for a 1Σ−–1Σ+ transition, the bands consist of single Q branches, in which the lines of lowest J are either missing or very weak. Although the selection rule prohibiting Σ−–Σ+ transitions is rigorous for dipole radiation at zero rotation, the I1Σ−–X1Σ+ transition can occur for higher rotational levels because of Coriolis interaction with the A1Π state, which lies very close to the I1Σ− state.Eight bands of the I–X system have been analyzed and from them the rotational and vibrational constants of the I1Σ− state have been determined. Previous information on this state was based entirely on the study of perturbations in the A1Π state. The corresponding perturbations in the I1Σ− state have now been observed. In addition, small "vibrational" perturbations in the ν = 4 and 5 levels (probably caused by interactions with the a3Π state) are found.

Luminescence Properties of Nd 3+ ‐Doped AlF 3 ‐Based Fluoride Glass in the Vacuum Ultraviolet Region

2020 ◽  
Vol 257 (8) ◽  
pp. 1900475
Author(s):  
Kohei Yamanoi ◽  
Yuki Minami ◽  
Toshihiko Shimizu ◽  
Nobuhiko Sarukura ◽  
Takahiro Murata ◽  
...  
Keyword(s):  
Vacuum Ultraviolet ◽  
Fluoride Glass ◽  
Luminescence Properties ◽  
Ultraviolet Region ◽  
Vacuum Ultraviolet Region

Anisotropic Optical Spectra of YAlO3(YAP) Single Crystals in the Vacuum Ultraviolet Region. III. Spectra of Optical Constants

1994 ◽  
Vol 63 (6) ◽  
pp. 2269-2289 ◽  
Author(s):  
Tetsuhiko Tomiki ◽  
Yoshiiku Ganaha ◽  
Tomoyoshi Futemma ◽  
Tohru Shikenbaru ◽  
Hiroo Kato ◽  
...  
Keyword(s):  
Single Crystals ◽  
Optical Constants ◽  
Vacuum Ultraviolet ◽  
Optical Spectra ◽  
Ultraviolet Region ◽  
Vacuum Ultraviolet Region
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