Direct radiative recombination of core-hole highly excited states in CsCl

1982 ◽  
Vol 25 (8) ◽  
pp. 5492-5498 ◽  
Author(s):  
P. Motais ◽  
E. Belin ◽  
C. Bonnelle
Keyword(s):  
Excited States ◽  
Radiative Recombination ◽  
Core Hole

scholarly journals The O K−2V spectrum of CO: the influence of the second core-hole

2021 ◽  
Author(s):  
D. Koulentianos ◽  
S. Carniato ◽  
R. Püttner ◽  
J. B. Martins ◽  
O. Travnikova ◽  
...  
Keyword(s):  
Excited States ◽  
Photoelectron Spectrum ◽  
Spectral Features ◽  
Core Hole

A K−2V photoelectron spectrum of the CO molecule, showing several core-ionized core-excited states, has been recorded and the different spectral features have been interpreted in terms of their direct or conjugate nature.

Photoluminescence Study of Radiative Recombination in Porous Silicon

1993 ◽  
Vol 298 ◽  
Author(s):  
Chun Wang ◽  
Franco Gaspari ◽  
Stefan Zukotynski
Keyword(s):  
Porous Silicon ◽  
Excited States ◽  
Ground State ◽  
Radiative Recombination ◽  
Single Electron ◽  
Photoluminescence Study ◽  
Recombination Centre ◽  
Electron Center ◽  
Recombination Centers

AbstractPhotoluminescence has been studied in porous silicon. Two types of radiative recombination centers have been identified. One gives rise to luminescence at about 820 nm and is believed to be related to Si-H bonds. The second gives rise to luminescence at about 770 nm and is likely associated with S-O bonds. Above about 20K radiative recombination is assisted by excited states of the recombination centre located about 10 meV above the ground state. The Si-H recombination centre is a single electron center whereas the Si-O center appears to be a multi-electron center.

Non L.T.E. Properties of Quasistationary Oxygen Plasmas

1976 ◽  
Vol 31 (3-4) ◽  
pp. 362-368 ◽  
Author(s):  
M. Cacciatore ◽  
M. Capitelli
Keyword(s):  
Excited States ◽  
Cross Sections ◽  
Ground State ◽  
Radiative Recombination ◽  
Local Thermodynamic Equilibrium ◽  
Collisional Radiative Model ◽  
Radiative Model ◽  
Ionization Coefficients ◽  
Selection Of ◽  
The Continuum

The non L.T.E. (local thermodynamic equilibrium) properties of optically thin and thick quasistationary oxygen plasmas have been calculated for the temperature range k T = 0.5 - 1.5 eV and for the electron density interval 108 - 1016 cm-3 , by using the collisional-radiative model of Bates, Kingston and McWhirther. The results include1 the coefficients r0(i) and r1(i), which represent the contribution to the population density of the ith quantum level from the continuum and from the ground state, respectively2 the values of α and S, which are the collisional-radiative recombination and ionization coefficients, respectively. The accuracy of the present results is discussed in connection with the adopted plasma model and with the selection of the collisional cross sections for forbidden and allowed transitions. A discussion is also presented of the influence of the two low lying excited states of oxygen atoms (i.e. the states 2p41D, 2p41S) on the non L.T.E. properties of these plasmas. A satisfactory agreement is found with the calculations of Julienne et al. and with the experimental results of Jones.

scholarly journals An ab initio multiconfigurational description of core hole and shake up excited states in small molecules

2015 ◽  
Vol 635 (11) ◽  
pp. 112111
Author(s):  
Inés Corral ◽  
Jesús González-Vázquez ◽  
Fernando Martín
Keyword(s):  
Ab Initio ◽  
Small Molecules ◽  
Excited States ◽  
Core Hole

Core‐hole excited states of H2O: Symmetries and relative oscillator strengths

1992 ◽  
Vol 97 (8) ◽  
pp. 5915-5918 ◽  
Author(s):  
D. Y. Kim ◽  
K. Lee ◽  
C. I. Ma ◽  
M. Mahalingam ◽  
D. M. Hanson ◽  
...  
Keyword(s):  
Excited States ◽  
Oscillator Strengths ◽  
Core Hole

Geometry Relaxations After Inner-Shell Excitations and Ionizations

2008 ◽  
Vol 73 (6-7) ◽  
pp. 771-785 ◽  
Author(s):  
Masahiro Ehara ◽  
Hiroshi Nakatsuji
Keyword(s):  
Excited States ◽  
Excitation Spectrum ◽  
Molecular Geometry ◽  
Length Change ◽  
Core Hole ◽  
Quantum Numbers ◽  
Condon Factors ◽  
Experimental Values ◽  
Franck Condon ◽  
Equilibrium Geometries

The geometry relaxations due to the inner-shell excitations and ionizations have been studied by the SAC-CI method. The characteristic molecular geometry changes were predicted for the core-hole states of CH4, NH3, H2O and HF: the calculated CH bond length change agrees well with the result simulated by the observed spectrum. The C1s excitation spectrum of CH4 was also investigated for the Rydberg states of the principal quantum numbers n = 3, 4 and 5. The potential energy curves of the dipole-allowed excited states were calculated for the totally symmetric stretching mode. The vibrational structure and Franck-Condon factors for the C1s excitation spectrum were well reproduced, which shows that the equilibrium geometries of the excited states were accurately evaluated. The geometries of the inner-shell π* excited states of N2O and CO2 were also examined. The calculated geometries of these states qualitatively agreed with the experimental values of the corresponding equivalent-core molecules.

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