scholarly journals Relative intensity distribution in the rotational structure for B1Σ+- A1Π and B1Σ+- X1Σ+ electronic systems of BeO molecule

2019 ◽  
Vol 12 (23) ◽  
pp. 51-58
Author(s):  
Marwa Waleed Mahmod
Keyword(s):  
Spectroscopic Study ◽  
Relative Intensity ◽  
Intensity Distribution ◽  
Beryllium Oxide ◽  
Boltzmann Distribution ◽  
Rotational Structure ◽  
Wave Number ◽  
Electronic Transitions ◽  
Electronic Systems ◽  
Relative Population

Theoretical spectroscopic study of  Beryllium Oxide has been carried out, Boltzmann distribution of P, Q and R branches in the range of (0<J<13) at temperature 4200K for (0-0) band for electronic transitions B1Σ+-A1Π and B1Σ-X1Σ. The Boltzmann distribution of these branches has a maximum values at equal J approximately while the values of relative population are different. For the B1Σ+- X1Σ+ transition the branch's lines extend towards lower wavenumber. This is because (Bv'-Bv") value is negative, i.e  Bv'< Bv" For B1Σ+-A1Π transition branch's lines extend towards higher wave number .This is because (Bv'-Bv") value is positive, i.e. Bv'> Bv". 

Brightness temperatures and intensity measurements in flash discharges

1961 ◽  
Vol 262 (1310) ◽  
pp. 409-419 ◽  
Keyword(s):  
Brightness Temperature ◽  
Wavelength Range ◽  
Intensity Distribution ◽  
Wave Number ◽  
Brightness Temperatures ◽  
Intensity Measurements ◽  
Capillary Type ◽  
Standard Lamp ◽  
The Continuum

The brightness temperature and the intensity distribution of the Lyman, coaxial and capillary-type flash tubes have been measured and compared over the wavelength range from 2580 to 4520 Å. The brightness temperature, obtained by comparison with a standard lamp, for these flash tubes ranged from 13 000 to 30 000 °K. The intensity per unit wave number was found to be independent of wave number over the above range for the Lyman and coaxial tubes. For the capillary flash the region independent of wave number extended up to 31 000 cm -1 beyond which the continuum decreased exponentially, in agreement with the predictions of the Unsöld-Kramers theory.

Angle-resolved photoelectron spectroscopic study of orientedp-sexiphenyl: Wave-number conservation and blurring in a short model compound of poly(p-phenylene)

1995 ◽  
Vol 52 (4) ◽  
pp. 2362-2373 ◽  
Author(s):  
Satoru Narioka ◽  
Hisao Ishii ◽  
Kunishige Edamatsu ◽  
Koji Kamiya ◽  
Shinji Hasegawa ◽  
...  
Keyword(s):  
Spectroscopic Study ◽  
Model Compound ◽  
Wave Number ◽  
Number Conservation

scholarly journals Measurement Method of Ion-beam Relative Intensity Distribution Using γ-Ray Irradiation Response Function of Gafchromic Film HD-V2

RADIOISOTOPES ◽  
2017 ◽  
Vol 66 (7) ◽  
pp. 251-258
Author(s):  
Tomohisa Ishizaka ◽  
Yosuke Yuri ◽  
Takashi Agematsu ◽  
Takahiro Yuyama ◽  
Hajime Seito ◽  
...  
Keyword(s):  
Response Function ◽  
Relative Intensity ◽  
Intensity Distribution ◽  
Measurement Method ◽  
Ion Beam ◽  
Gafchromic Film ◽  
Γ Ray

scholarly journals Spectroscopic study on deuterated benzenes. II. High-resolution laser spectroscopy and rotational structure in the S1 state

2015 ◽  
Vol 143 (24) ◽  
pp. 244303 ◽  
Author(s):  
Sachi Kunishige ◽  
Toshiharu Katori ◽  
Masaaki Baba ◽  
Masato Hayashi ◽  
Hirokazu Hasegawa ◽  
...  
Keyword(s):  
High Resolution ◽  
Spectroscopic Study ◽  
Laser Spectroscopy ◽  
Rotational Structure

scholarly journals A multidisciplinary study on magnesium

2012 ◽  
Vol 77 (11) ◽  
pp. 1483-1528 ◽  
Author(s):  
Radomir Rankovic ◽  
Stevan Stojadinovic ◽  
Mirjana Sarvan ◽  
Becko Kasalica ◽  
Marija Krmar ◽  
...  
Keyword(s):  
Plasma Temperature ◽  
Wave Number ◽  
Local Thermal Equilibrium ◽  
Measured Intensity ◽  
Perturbative Approach ◽  
Relative Population ◽  
Number Range ◽  
Multidisciplinary Study ◽  
Electrolytic Oxidation ◽  
Condon Factors

During plasma electrolytic oxidation of a magnesium alloy (96% Mg, 3% Al, 1% Zn) we obtained a luminescence spectrum in the wave number range between 19 950 and 20 400 cm-1. The broad peak with clearly pronounced structure was assigned to the v?-v? = 0 sequence of the B 1?+ ? X 1?+ electronic transition of MgO. Quantum-mechanical perturbative approach was applied to extract the form of the potential energy curves for the electronic states involved in the observed spectrum, from the positions of spectral bands. These potential curves, combined with the results of quantum-chemical calculations of the electric transition moment, were employed in subsequent variational calculations to obtain the Franck-Condon factors and transition moments for the vibrational transitions observed. Comparing the results of these calculations with the measured intensity distribution within the spectrum we derived relative population of the upper electronic state vibration levels. This enabled us to estimate the plasma temperature. Additionally, the temperature was determined by analysis of the recorded A 2?+ (v? = 0) - X 2? (v? = 0) emission spectrum of OH. The composition of plasma containing magnesium, oxygen, and hydrogen under assumption of local thermal equilibrium was calculated in the temperature range up to 12 000 K and for pressures of 105, 106, 107, and 108 Pa, in order to explain the appearance of the observed spectral features and to contribute to elucidation of processes taking place during the electrolytic oxidation of Mg.

Electronic Raman effect of nitric oxide at high resolution

1969 ◽  
Vol 47 (24) ◽  
pp. 2879-2881 ◽  
Author(s):  
H. Fast ◽  
H. L. Welsh ◽  
D. W. Lepard
Keyword(s):  
Nitric Oxide ◽  
Raman Spectrum ◽  
High Resolution ◽  
Spectral Resolution ◽  
Intensity Distribution ◽  
Electronic Transition ◽  
Raman Effect ◽  
Rotational Structure ◽  
Transition Formula

The rotational Raman spectrum of gaseous NO was photographed with a spectral resolution of ~0.3 cm−1. In longer exposures the rotational structure of the electronic transition, [Formula: see text], was also observed. It consists of O, P, Q, R, and S branches and has an intensity distribution in accordance with theory.

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