Franck-Condon factors,r-centroids and electronic transition moment variation with internuclear distance ofB
                     1Σ−X
                     1Σ band system of BeO using RKR potential

Experimental band intensities in the CN red system, A (2Πi) →X(2Σ+), have been measured using an active nitrogen – carbon tetrachloride source. Using calculated Franck–Condon factors qν′ν″ the electronic transition moment Re(r) is found to vary little over the range 1.04 < r < 1.27 Å.

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Variation of the Electronic Transition Moment and the Effective Vibrational Temperature in 4800–6700-Å System of MnO Molecule

Applied Spectroscopy ◽

10.1366/000370271779950454 ◽

1971 ◽

Vol 25 (5) ◽

pp. 554-556

Author(s):

Prem Shankar Dube ◽

A. K. Chaudhry ◽

G. D. Baruah ◽

D. K. Rai

Keyword(s):

Electronic Transition ◽

Vibrational Temperature ◽

Transition Moment ◽

Electronic Transition Moment ◽

Straight Line ◽

Condon Factors ◽

Effective Vibrational Temperature ◽

Franck Condon ◽

Photographic Photometry

The 4800–6700-Å system of MnO has been excited in an arc. Using the photographic photometry, the relative band intensities have been measured. The data were interpreted with the aid of Franck-Condon factors and r centroids. The electronic transition moment is found to vary according to the relation Re(r) = const (1- 3.192 r + 1.99 r2), where 1.736≤ r≤ 1.90 Å. The slope of the straight line plot of log ∑ v″ I/v4 against G'(ν') for ν' progression gives an estimate of effective vibrational temperature to be 3860 K.

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The visible band systems of GeH+ and GeD+ in the helium afterglow

Canadian Journal of Physics ◽

10.1139/p86-244 ◽

1986 ◽

Vol 64 (10) ◽

pp. 1374-1378 ◽

Cited By ~ 7

Author(s):

Sumio Yamaguchi ◽

Masaharu Tsuji ◽

Yukio Nishimura

Keyword(s):

Electronic Transition ◽

Transition Moment ◽

Spectroscopic Constants ◽

Electronic Transition Moment ◽

Visible Band ◽

Condon Factors ◽

First Time ◽

Franck Condon ◽

Morse Potentials ◽

Higher Sensitivity

The [Formula: see text] intercombination bands of GeH+ and GeD+ have been observed from the helium afterglow reactions of GeH4 and GeD4, respectively. Only the (0,0) band of [Formula: see text] had been rotationally analyzed before; the higher sensitivity of the new measurements made possible the rotational analyses of four weaker bands. Eleven bands of [Formula: see text] were observed for the first time, and rotational analyses were made of five dominant bands. By using isotope relationships, we obtained detailed spectroscopic constants for the [Formula: see text] and X1Σ+ states of GeH+ and GeD+. Franck–Condon factors and r centroids of the [Formula: see text] transitions of GeH+ and GeD+ have been calculated on the basis of Morse potentials. The dependence of the electronic transition moment on the r centroid and the relative vibrational populations of [Formula: see text] and [Formula: see text] have been estimated.

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Intensity measurements in emission of 18 Vegard–Kaplan bands of N2

Canadian Journal of Physics ◽

10.1139/p68-031 ◽

1968 ◽

Vol 46 (3) ◽

pp. 221-226 ◽

Cited By ~ 9

Author(s):

G. Chandraiah ◽

G. G. Shepherd

Keyword(s):

Discharge Tube ◽

Electronic Transition ◽

Band System ◽

Internuclear Separation ◽

Electronic Transition Moment ◽

Intensity Measurements ◽

Condon Factors ◽

Nitrogen Mixture ◽

Photoelectric Measurements ◽

Franck Condon

The Vegard–Kaplan band system of nitrogen was excited by running a low-current discharge through a pure xenon–nitrogen mixture contained in a 6-liter spherical bulb of a discharge tube. Photoelectric measurements of the relative intensities of 18 bands (λ 2340–4324 Å) have been made using a 1-m Ebert–Fastie spectrometer. These measured band intensities were used along with Franck–Condon factors qν′ν″ and r centroids [Formula: see text] to study the variation of the electronic transition moment Re(r) with internuclear separation r. It was found that over the measured range from r = 1.23 to 1.43 Å that Re(r) could be represented by[Formula: see text]A "smoothed" set of band strengths [Formula: see text] was determined from this expression for all the observed bands of the Vegard–Kaplan system.

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PHOTOELECTRIC INTENSITY MEASUREMENTS UPON BANDS OF THE SiN (B2Σ+−X2Σ+) SPECTRUM

Canadian Journal of Physics ◽

10.1139/p63-030 ◽

1963 ◽

Vol 41 (2) ◽

pp. 240-245 ◽

Cited By ~ 6

Author(s):

Anne E. Stevens ◽

H. I. S. Ferguson

Keyword(s):

Electronic Transition ◽

Trace Amount ◽

Transition Moment ◽

Internuclear Separation ◽

Electronic Transition Moment ◽

Intensity Measurements ◽

Condon Factors ◽

Microwave Excitation ◽

Franck Condon

The SiN B2Σ+−X2Σ+ (3800–5200 A) spectrum was excited by continuous introduction of SiCl4 in trace amount into the afterglow produced by microwave excitation of nitrogen. Relative intensities of 21 bands were measured photo-electrically and interpreted with the aid of Franck–Condon factors qν′ν″ and r-centroids [Formula: see text] in terms of the variation of the electronic transition moment Re(r) with internuclear separation r. It was found that Re(r) could be represented empirically by Re(r) = const.(1−1.27r + 0.412r2), [Formula: see text].

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