THE VISIBLE EMISSION SPECTRUM OF Cl2+1

1958 ◽  
Vol 36 (11) ◽  
pp. 1557-1568 ◽  
Author(s):  
V. Venkateswara Rao ◽  
P. Tiruvenganna Rao
Keyword(s):  
Potential Energy ◽  
Emission Spectrum ◽  
Normal State ◽  
Emission Band ◽  
Visible Emission ◽  
Lower State ◽  
Vibrational Assignments ◽  
Two Systems ◽  
Visible Emission Band ◽  
Concave Grating

Two visible emission band systems attributed to the ionized molecule Cl2+ were studied using the second order of a 21-ft concave grating spectrograph (dispersion 1.25 Å/mm). Rotational analyses have been carried out for six bands of system I and six of system III for which new vibrational analyses have recently been proposed by Haranath and Rao. The rotational analyses of the bands of these two systems are consistent with the vibrational assignments. Rotational constants for the upper and lower states of the two systems have been derived. Both the vibrational and rotational analyses of systems I and III indicate case (c) 1/2–1/2 and 3/2–3/2 transitions respectively for the two systems. Potential energy curves are drawn for the upper and the lower states of each of the two systems. The lower states dissociate into a normal Cl (2P) + Cl+(3P) while the upper states dissociate into a normal Cl (2P) + an excited Cl+ (1D). It is suggested that the lower state of system 111 is probably the normal state of Cl2+ from theoretical and experimental evidence.

High resolution spectrum of GdO

1976 ◽  
Vol 54 (24) ◽  
pp. 2429-2434 ◽  
Author(s):  
B. R. Yadav ◽  
S. B. Rai ◽  
D. K. Rai
Keyword(s):  
High Resolution ◽  
Emission Spectrum ◽  
Visible Emission ◽  
High Resolution Spectrum ◽  
First Order ◽  
Isotopic Shifts ◽  
Vibrational Constants ◽  
Dc Arc

The visible emission spectrum of the GdO molecule has been produced in a DC arc source and has been photographed in the first order of a 10.6 m grating spectrograph. Bands are shown to have a six-headed structure and improved vibrational constants have been obtained in this study. Isotopic shifts have been calculated for the various isotopic molecules. Tentative suggestions regarding the nature of the transition have been made.

Thioamide spectroscopy: long path length absorption and quantum chemical studies of thioformamide vapour, CHSNH2/CHSND2

1987 ◽  
Vol 65 (9) ◽  
pp. 2100-2105 ◽  
Author(s):  
R. H. Judge ◽  
D. C. Moule ◽  
J. D. Goddard
Keyword(s):  
Path Length ◽  
Lower State ◽  
Amino Groups ◽  
Vibrational Assignments ◽  
Transition Formula ◽  
Out Of Plane ◽  
Chemical Studies ◽  
Moderate Resolution ◽  
Quantum Chemical Studies ◽  
Franck Condon

The 270 nm absorption spectra of thioformamide, CHSNH2 and CHSND2, have been photographically recorded under conditions of long path length (88 m) and moderate resolution (7.5 Å/mm). The absorption was assigned to the electron promotion, nS → π* (CS), and to the electronic transition, [Formula: see text]. The spectra proved to be complex, highly congested and somewhat diffuse which limited the extent of the vibrational assignments. Progressions in five members were observed in both CHSNH2/CHSND2 in intervals of 516/496 cm−1 which were assigned to ν10, the out-of-plane aldehyde wagging mode. It was concluded on Franck–Condon grounds that the [Formula: see text] molecule was non-planar at the aldehyde center. Structures and vibrational frequencies were calculated for the [Formula: see text] and the[Formula: see text] electronic states at the 3-21G* SCF level. The calculations confirmed that the lower state was strictly planar and predicted that both the aldehyde and amino groups were pyramidal in the upper electronic state.

THE EMISSION SPECTRUM OF THE PbBr MOLECULE

1967 ◽  
Vol 45 (11) ◽  
pp. 3663-3666 ◽  
Author(s):  
K. M. Lal ◽  
B. N. Khanna
Keyword(s):  
Emission Spectrum ◽  
Visible Region ◽  
Second Order ◽  
Rotational Analysis ◽  
Rotational Constants ◽  
Concave Grating

The emission spectrum of the A–X system of the PbBr molecule in the region 4 600–5 900 Å has been obtained in the second order of a 21-ft concave grating spectrograph (15 000 lines per inch) with a dispersion of 1.25 Å/mm. A rotational analysis of four bands—(3, 2), (2, 2), (3, 1), and (4, 1)—of this system has been done, leading to the determination of the following rotational constants:[Formula: see text]The system appears to be similar to the A-X system of the PbCl molecule in the visible region, and a [Formula: see text] transition has been suggested.

The a3Π1–X1Σ+ emission system of CBr+

1983 ◽  
Vol 61 (2) ◽  
pp. 251-255 ◽  
Author(s):  
Masaharu Tsuji ◽  
Keiji Shinohara ◽  
Toshinori Mizuguchi ◽  
Yukio Nishimura
Keyword(s):  
Charge Transfer ◽  
Emission Spectrum ◽  
Thermal Energy ◽  
Transfer Reaction ◽  
Vibrational Analysis ◽  
Visible Emission ◽  
Spectroscopic Constants ◽  
Charge Transfer Reaction ◽  
Emission System ◽  
First Time

The visible emission spectrum of the CBr+ molecule has been observed for the first time in the helium afterglow reaction of CBr4. It was excited by the dissociative charge-transfer reaction of He+ with CBr4 at thermal energy. The vibrational analysis led to the following spectroscopic constants (in cm−1).[Formula: see text]

A discussion on infared astronomy - The emission spectrum of the night airglow from 2 to 4μm

1969 ◽  
Vol 264 (1150) ◽  
pp. 161-161
Keyword(s):  
Infrared Spectrum ◽  
Emission Spectrum ◽  
High Altitude ◽  
Emission Band ◽  
Night Airglow

The infrared spectrum of the airglow in the region 2 to 4 μm has been measured with a two-beam interferometer carried to high altitude by a balloon. The aV= 1 sequence of OH bands is in evidence as well as an emission band of CO 2 .

Formation of the continuous visible emission spectrum of pulsed discharge in cesium vapor

2009 ◽  
Vol 35 (12) ◽  
pp. 1078-1080 ◽  
Author(s):  
F. G. Baksht ◽  
V. B. Kaplan ◽  
V. F. Lapshin ◽  
A. M. Martsinovskiĭ
Keyword(s):  
Emission Spectrum ◽  
Visible Emission ◽  
Cesium Vapor ◽  
Pulsed Discharge

The Emission Spectrum of PtO between 3800 and 4500 Å

1975 ◽  
Vol 53 (19) ◽  
pp. 1991-1999 ◽  
Author(s):  
Rosemary Scullman ◽  
Ulf Sassenberg ◽  
Christer Nilsson
Keyword(s):  
Emission Spectrum ◽  
Ground State ◽  
Lower State ◽  
Vibrational Levels ◽  
New System

A new system belonging to the emission spectrum of PtO has been found in the region of 3800–4500 Å. This system has the earlier known X1Σ ground state as the lower state and a hitherto unknown 1Σ state, here designated the D1Σ state, as the upper state. The four lowest vibrational levels of the D1Σ state were rotationally analyzed. Of these levels, the [Formula: see text] level seems to be unperturbed although the v′ = 1, 2, and 3 levels are strongly perturbed.

Identification of the many‐line visible emission spectrum of BaO

1982 ◽  
Vol 77 (1) ◽  
pp. 83-91 ◽  
Author(s):  
James J. Reuther ◽  
Howard B. Palmer
Keyword(s):  
Emission Spectrum ◽  
Visible Emission ◽  
The Many
Sign in / Sign up

Export Citation Format

Share Document