State‐resolved inelastic collisions of single rotational, fine‐structure, and Λ doublet levels of NH(A 3Π) with helium: A combined experimental and theoretical study

1996 ◽  
Vol 104 (4) ◽  
pp. 1325-1337 ◽  
Author(s):  
L. Neitsch ◽  
F. Stuhl ◽  
Paul J. Dagdigian ◽  
Millard H. Alexander
Keyword(s):  
Fine Structure ◽  
Theoretical Study ◽  
Inelastic Collisions

Fine-structure state resolved rotationally inelastic collisions of CH(A [sup 2]Δ,v=0) with Ar: A combined experimental and theoretical study

2001 ◽  
Vol 114 (10) ◽  
pp. 4479 ◽  
Author(s):  
M. Kind ◽  
F. Stuhl ◽  
Yi-Ren Tzeng ◽  
Millard H. Alexander ◽  
Paul J. Dagdigian
Keyword(s):  
Fine Structure ◽  
Theoretical Study ◽  
Inelastic Collisions ◽  
Structure State

Fine structure relaxation of aluminum by atomic argon between 30 and 300 K: An experimental and theoretical study

1998 ◽  
Vol 108 (24) ◽  
pp. 10319-10326 ◽  
Author(s):  
S. D. Le Picard ◽  
B. Bussery-Honvault ◽  
C. Rebrion-Rowe ◽  
P. Honvault ◽  
A. Canosa ◽  
...  
Keyword(s):  
Fine Structure ◽  
Theoretical Study ◽  
Structure Relaxation

Experimental and theoretical study of Λ-doublet resolved rotationally inelastic collisions of highly rotationally excited CH(A 2Δ,v=0) with Ar

2001 ◽  
Vol 115 (2) ◽  
pp. 800-809 ◽  
Author(s):  
Boris Nizamov ◽  
Paul J. Dagdigian ◽  
Yi-Ren Tzeng ◽  
Millard H. Alexander
Keyword(s):  
Theoretical Study ◽  
Inelastic Collisions

Inelastic collisions of fine structure and Λ-doublet resolved rotational states of PH(A 3Π, v=0) with helium

1997 ◽  
Vol 106 (18) ◽  
pp. 7642-7653 ◽  
Author(s):  
L. Neitsch ◽  
F. Stuhl ◽  
Paul J. Dagdigian ◽  
Millard H. Alexander
Keyword(s):  
Fine Structure ◽  
Inelastic Collisions ◽  
Rotational States

scholarly journals Theoretical Study of Excitonic Complexes in GaAs/AlGaAs Quantum Dots Grown by Filling of Nanoholes

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Mohamed Omri ◽  
Amor Sayari ◽  
Larbi Sfaxi
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Fine Structure ◽  
Theoretical Study ◽  
Three Dimensional ◽  
Correlation Effect ◽  
Wave Functions ◽  
Transition Energies ◽  
New Family ◽  
Effective Mass Schrödinger Equation

In this work, a theoretical study of the electronic and the optical properties of a new family of strain-free GaAs/AlGaAs quantum dots (QDs) obtained by AlGaAs nanohole filling is presented. The considered model consists of solving the three-dimensional effective-mass Schrödinger equation, thus providing a complete description of the neutral and charged complex excitons’ fine structure. The QD size effect on carrier confinement energies, wave functions, and s-p splitting is studied. The direct Coulomb interaction impact on the calculated s and p states’ transition energies is investigated. The behaviour of the binding energy of neutral and charged excitons (X− and X+) and biexciton XX versus QD height is studied. The addition of the correlation effect allows to explain the nature of biexcitons often observed experimentally.

Inelastic Collisions between Excited Alkali Atoms and Molecules. VIII. 62P1/2–62P3/2 Mixing and Quenching in Mixtures of Rubidium with H2, HD, D2, N2, CH4, and CD4

1973 ◽  
Vol 51 (3) ◽  
pp. 257-265 ◽  
Author(s):  
I. N. Siara ◽  
L. Krause
Keyword(s):  
Fine Structure ◽  
Cross Sections ◽  
Ground State ◽  
Inelastic Collisions ◽  
Fluorescent Intensity ◽  
Rubidium Vapor ◽  
Sensitized Fluorescence ◽  
Molecular Gases ◽  
Alkali Atoms ◽  
Intensity Ratios

Excitation transfer between the 62P fine-structure substates in rubidium, induced in inelastic collisions with ground-state molecules, has been studied using techniques of sensitized fluorescence. Rubidium vapor in mixtures with various molecular gases was irradiated with each component of the 2P rubidium doublet in turn, and measurements of sensitized-to-resonance fluorescent intensity ratios yielded the following mixing cross sections Q12(2P1/2 → 2P3/2) and Q21(2P1/2 ← 2P3/2), as well as effective quenching cross sections Q1X(2P1/2 → 2XJ″) and Q2X(2P3/2 → 2XJ″). For collisions with H2: Q12(2P1/2 → 2P3/2) = (41 ± 5) Å2; Q21(2P1/2 ← 2P3/2) = (26 ± 3) Å2; Q1X(2P1/2 → 2XJ″) = (36 ± 9) Å2; Q2X(2P3/2 → 2XJ″) = (31 ± 8) Å2. For HD: Q12 = (42 ± 5) Å2; Q21 = (27 ± 4) Å2; Q1X = (47 ± 13) Å2; Q2X = (38 ± 10) Å2. For D2: Q12 = (42 ± 5) Å2; Q21 = (27 ± 4) Å2; Q1X = (28 ± 8) Å2; Q2X = (21 ± 7) Å2. For N2: Q12 = (107 ± 15) Å2; Q21 = (70 ± 10) Å2; Q1X = (128 ± 44) Å2; Q2X = (126 ± 33) Å2. For CH4: Q12 = (38 ± 6) Å2; Q21 = (24 ± 3) Å2; Q1X = (129 ± 41) Å2; Q2X = (114 ± 37) Å2. For CD4: Q12 = (52 ± 7) Å2; Q21 = (34 ± 5) Å2; Q1X = (82 ± 30) Å2; Q2X = (76 ± 22) Å2. An analysis of these results suggests the possibility of resonances with various molecular rotational and vibrational transitions.

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