Etats Rydberg de NS. Etude du domaine spectral 2400–1750 Å

1976 ◽  
Vol 54 (18) ◽  
pp. 1909-1923 ◽  
Author(s):  
Michel Vervloet ◽  
Alain Jenouvrier
Keyword(s):  
Energy Level ◽  
Relative Position ◽  
Rydberg States ◽  
Energy Level Diagram ◽  
Electronic Transitions ◽  
Complete Analysis ◽  
Molecular Constants ◽  
Π State ◽  
Potential Curves

Five electronic transitions, C2Σ+–X2Π, I2Σ+–X2Π, E2Π–X2Π, J2Σ+–X2Π, and F2Δ–X2Π of NS have been observed in the region 1750–2400 Å. The complete analysis of these transitions has been carried out. The molecular constants of the C2Σ+, E2Π, J2Σ+, and F2Δ Rydberg states are given. Many perturbations in the rotational structures (ν = 1 and 2 of C2Σ+, ν = 0 of E2Π) and predissociations in the levels ν = 0 J2Σ+ and F2Δ are observed. The perturbation in the level ν = 0 of the E2Π state is described, the perturbing level being ν = 11 of the H2Π valence state.The most important results are given in the tables of constants. An energy level diagram and potential curves show the relative position of the different states. All the observed states of NS are finally compared with those of PO.

Etats de valence de NS dans le domaine 2250–3800 Å

1973 ◽  
Vol 51 (20) ◽  
pp. 2143-2161 ◽  
Author(s):  
Alain Jenouvrier ◽  
Bernard Pascat
Keyword(s):  
Energy Level ◽  
Energy Level Diagram ◽  
Electronic Transitions ◽  
Rotational Analysis ◽  
Molecular Constants ◽  
Potential Curves

Five red-degraded transitions, A2Δ–X2Π, G2Σ−–X2Π, H2Π–X2Π, I2Σ+–X2Π, and B2Π–X2Π of 14N32S, have been observed in the region 2250–3800 Å. The complete rotational analysis of these transitions leads to a coherent attribution of the electronic transitions and reveals many perturbations in the rotational structures. All the levels of the A2Δ state are perturbed and the perturbing state is presumably a [Formula: see text] state.The most important results are given in the tables of molecular constants. An energy level diagram and potential curves show the relative positions of the different observed states.

scholarly journals Luminescence Centers in Thin Films of ZnGa2O4

2015 ◽  
Vol 16 (1) ◽  
pp. 74-78 ◽  
Author(s):  
O. M. Bordun ◽  
I. Y. Kukharskyy ◽  
B. O. Bordun
Keyword(s):  
Thin Films ◽  
Energy Level ◽  
Luminescence Band ◽  
Oxygen Vacancies ◽  
Energy Level Diagram ◽  
Electronic Transitions ◽  
Luminescence Spectra ◽  
X Ray ◽  
Luminescence Centers

Photoexcitation spectra and luminescence of thin films of ZnGa2O4 under photo-, cathode and X-ray excitation were investigated. Luminescence spectra were factorized on ultimate constituents using Alentsev-Fock method. Emission bands with maximums at 3.35, 2.85, 2.50 and 2.38 eV were referred to the luminescence at the expense of electronic transitions between 4Т2, 4Т1, 2Е and 4А2 terms in octahedral complexes (GaO6)9–. It was proposed an energy level diagram with corresponding electronic transitions in such structure. Luminescence band with maximum at 1.75 eV is attributed to oxygen vacancies.

ABSORPTION SPECTRUM OF THE NO MOLECULE: VI. BAND STRUCTURES BELOW 1 600 Å, RYDBERG STATES C2Π, D2Σ+, K2Π, M2Σ+, S2Σ+, NON-RYDBERG STATES B2Π, L2Π AND THEIR INTERACTIONS

1966 ◽  
Vol 44 (7) ◽  
pp. 1525-1539 ◽  
Author(s):  
A. Lagerqvist ◽  
E. Miescher
Keyword(s):  
Absorption Spectrum ◽  
Electronic State ◽  
Fourth Order ◽  
Rydberg States ◽  
Liquid Oxygen ◽  
Interaction Energies ◽  
Band Structures ◽  
Vibrational Levels ◽  
Π State ◽  
Potential Curves

The study of the absorption spectrum of the NO molecule has been continued on plates taken in the fourth order of a 10.5-m vacuum spectrograph. The spectra of 14N16O, 15N16O, 14N18O, and 15N18O gases, each kept at liquid-oxygen temperature, were photographed separately. Rotational analyses were carried out for many bands observed below 1 600 Å. Constants for levels of the Rydberg complexes 3p, 4s, 4p, and 5s have been derived. These levels include ν = 5 and ν = 6 of the C2Π state, levels that interact with the levels ν = 21 and 24 respectively of the configurationally different B2Π state. It is shown that the vibrational levels, now well established above the energy where the potential curves of the C and B states cross, are to be attributed to "crossing" curves.The level ν = 4 of the L2Π state, which was discerned in the spectra of the heavier isotopes only, coincides in 14N16O with the level ν = 6 of C2Π and produces a strong three-level perturbation. The level, perturbed in this way, has the appearance of a separate electronic state in 14N16O and at one time was so identified.Many interaction energies are determined, and the new systems of "deper-turbed" levels are thoroughly discussed.

Quantum Boxes, Stringed Instruments

2017 ◽  
Author(s):  
Frank S. Levin
Keyword(s):  
Energy Level ◽  
Schrödinger Equation ◽  
Quantum System ◽  
Schrodinger Equation ◽  
Probability Distributions ◽  
Wave Functions ◽  
Energy Level Diagram ◽  
One Dimensional ◽  
Stringed Instruments ◽  
Symmetry Properties

Chapter 7 illustrates the results obtained by applying the Schrödinger equation to a simple pedagogical quantum system, the particle in a one-dimensional box. The wave functions are seen to be sine waves; their wavelengths are evaluated and used to calculate the quantized energies via the de Broglie relation. An energy-level diagram of some of the energies is constructed; on it are illustrations of the corresponding wave functions and probability distributions. The wave functions are seen to be either symmetric or antisymmetric about the midpoint of the line representing the box, thereby providing a lead-in to the later exploration of certain symmetry properties of multi-electron atoms. It is next pointed out that the Schrödinger equation for this system is identical to Newton’s equation describing the vibrations of a stretched musical string. The different meaning of the two solutions is discussed, as is the concept and structure of linear superpositions of them.

Modification of energy level diagram of nano-crystalline ZnO by its composites with ZnWO4 suitable for sunlight assisted photo catalytic activity

2021 ◽  
Vol 26 ◽  
pp. 102101
Author(s):  
Vaishali Kale ◽  
Y.M. Hunge ◽  
Shalaka A. Kamble ◽  
Madhuri Deshmukh ◽  
S.V. Bhoraskar ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Energy Level ◽  
Energy Level Diagram ◽  
Photo Catalytic Activity ◽  
Nano Crystalline

Rotational Analysis of the lΠ–XlΣ+ System of C80Se

1974 ◽  
Vol 52 (9) ◽  
pp. 813-820 ◽  
Author(s):  
René Stringat ◽  
Jean-Paul Bacci ◽  
Marie-Hélène Pischedda
Keyword(s):  
Emission Spectrum ◽  
Ground State ◽  
High Frequency ◽  
Rotational Analysis ◽  
Molecular Constants ◽  
High Frequency Discharge ◽  
Perturbed State ◽  
Simple Evaluation ◽  
Π State

The strongly perturbed 1Π–X1Σ+ system of C80Se has been observed in the emission spectrum of a high frequency discharge through selenium and carbon traces in a neon atmosphere. The analysis of five bands yields, for the molecular constants of the ground state, the values Be″ = 0.5750 cm−1, [Formula: see text], αe″ = 0.00379 cm−1, re″ = 1.676 Å, ΔG″(1/2) = 1025.64 cm−1, and ΔG″(3/2) = 1015.92 cm−1. The numerous perturbations in the 1Π state prohibit the simple evaluation of the constants of the perturbed state and of the perturbing ones.

Compositional variation dependent colour tuning and observation of Förster resonant energy transfer in Cd(1−x)ZnxS nanomaterials

2020 ◽  
Vol 44 (3) ◽  
pp. 870-883 ◽  
Author(s):  
Lakshmi Kumari ◽  
Asit Kumar Kar
Keyword(s):  
Energy Transfer ◽  
Energy Level ◽  
Energy Level Diagram ◽  
Compositional Variation ◽  
Transfer Energy ◽  
Resonant Energy ◽  
Spectral Overlap ◽  
Resonant Energy Transfer ◽  
Colour Tuning

Energy level diagram of FRET process in Cd(1−x)ZnxS nanomaterials between donor (ZnS) and acceptor (CdS): the smaller ZnS materials transfer energy nonradiatively to the larger CdS materials when there is sufficient spectral overlap between them.

NEW ELECTRONIC TRANSITIONS OF THE BH MOLECULE

1941 ◽  
Vol 19a (2) ◽  
pp. 27-31 ◽  
Author(s):  
A. E. Douglas
Keyword(s):  
Electronic Transitions ◽  
Lower State ◽  
Electron Configuration ◽  
Rotational Constants ◽  
Boron Trichloride ◽  
New States ◽  
Π State

In a discharge in helium with a trace of boron trichloride and hydrogen three new bands are found at 3415 Å, 3396 Å, and 3099 Å. Measurements of these bands show that they are due to two new electronic transitions of the BH molecule. The upper states of both transitions are previously unknown 1Σ+ states. The lower state of both transitions is the same and is a known 1Π state. The rotational constants of both new states have been determined and their electron configuration is suggested.

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