Inelastic collisions of OH (2Π) with H2: Comparison between theory and experiment including rotational, fine structure, and Λ‐doublet transitions

1984 ◽  
Vol 81 (12) ◽  
pp. 5644-5648 ◽  
Author(s):  
R. Schinke ◽  
P. Andresen
Keyword(s):  
Fine Structure ◽  
Inelastic Collisions ◽  
Theory And Experiment

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

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 Fine Structure of the1s3p   PJ3Level in AtomicHe4: Theory and Experiment

2005 ◽  
Vol 94 (13) ◽  
Author(s):  
P. Mueller ◽  
L.-B. Wang ◽  
G. W. F. Drake ◽  
K. Bailey ◽  
Z.-T. Lu ◽  
...  
Keyword(s):  
Fine Structure ◽  
Theory And Experiment

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.

The Fine Structure of Alkali Metal Atoms in Inelastic Collisions with Hydrogen

2019 ◽  
Vol 127 (2) ◽  
pp. 207-211 ◽  
Author(s):  
S. A. Yakovleva ◽  
Ya. V. Voronov ◽  
A. K. Belyaev
Keyword(s):  
Fine Structure ◽  
Alkali Metal ◽  
Inelastic Collisions ◽  
Metal Atoms

Progress in helium fine-structure calculations and the fine-structure constant

2002 ◽  
Vol 80 (11) ◽  
pp. 1195-1212 ◽  
Author(s):  
G WF Drake
Keyword(s):  
Fine Structure ◽  
Structure Constant ◽  
Fine Structure Constant ◽  
Electron Interaction ◽  
Computational Uncertainty ◽  
Structure Calculations ◽  
Theory And Experiment

The long-term goal of this work is to determine the fine-structure constant α from a comparison between theory and experiment for the fine-structure splittings of the helium 1s2p 3PJ states. All known terms of order α5 a.u. (α7 mc2) arising from the electron–electron interaction, and recoil corrections of order α4 µ / M a.u. are evaluated and added to previous tabulation. The predicted energy splittings are ν0,1 = 29 616.946 42(18) MHz and ν1,2 = 2291.154 62(31) MHz. Although the computational uncertainty is much less than ±1 kHz, there is an unexplained discrepancy between theory and experiment of 19.4(1.4) kHz for ν1,2. PACS Nos.: 31.30Jv, 32.10Fn

Inelastic collisions between selectively excited rubidium6D2-state atoms and noble-gas atoms: Fine-structure-state mixing

1983 ◽  
Vol 28 (3) ◽  
pp. 1329-1337 ◽  
Author(s):  
B. G. Zollars ◽  
H. A. Schuessler ◽  
J. W. Parker ◽  
R. H. Hill
Keyword(s):  
Fine Structure ◽  
Noble Gas ◽  
Inelastic Collisions ◽  
Structure State ◽  
State Mixing
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