Fine-structure measurements of4He by zero-field quantum beats

1972 ◽  
Vol 257 (4) ◽  
pp. 279-287 ◽  
Author(s):  
W. Wittmann ◽  
K. Tillmann ◽  
H. J. Andr� ◽  
P. Dobberstein
Keyword(s):  
Fine Structure ◽  
Quantum Beats ◽  
Zero Field

ENERGY DEPENDENCE OF THE POLARISATION IN ZERO-FIELD QUANTUM BEATS IN Hβ EMISSION

1979 ◽  
Vol 40 (C1) ◽  
pp. C1-335-C1-337 ◽  
Author(s):  
J. Carmeliet ◽  
J. C. Dehaes ◽  
W. Singer
Keyword(s):  
Energy Dependence ◽  
Quantum Beats ◽  
Zero Field

scholarly journals Fine structure and spin quantum beats in InP quantum dots in a magnetic field

2002 ◽  
Vol 66 (23) ◽  
Author(s):  
I. A. Yugova ◽  
I. Ya. Gerlovin ◽  
V. G. Davydov ◽  
I. V. Ignatiev ◽  
I. E. Kozin ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Fine Structure ◽  
Quantum Beats ◽  
Spin Quantum ◽  
Inp Quantum Dots

Correlation of Zero Field Splittings and Site Distortions V. Mn2+ in Cs2Zn3S4

1983 ◽  
Vol 38 (2) ◽  
pp. 149-153 ◽  
Author(s):  
M. Heming ◽  
G. Lehmann
Keyword(s):  
Fine Structure ◽  
Hyperfine Splitting ◽  
Site Symmetry ◽  
Zero Field ◽  
Structure Parameters ◽  
Zero Field Splitting ◽  
Zero Field Splitting Parameter ◽  
Free Ion ◽  
Splitting Parameter ◽  
Epr Signal

Abstract In platelets of Cs2Zn3S4 with about 4% of the Zn substituted by Mn two nonequivalent centers of isolated Mn2+ were observed in addition to a broad EPR signal near g = 2 which is assigned to clusters of interconnected MnS4 units. The fine structure and hyperfine structure parameters for the single-ion centers (all in units of 1CT 4 cm -1) areb02 = -318.3 ± 3; b22 = -210.3 ± 2; Ay = -62.7; Az = -63.6 ± 0.8;b02 = -890 ± 18; b22 = -743 ± 36; Ay = -60.6; Az = - 61.4 ± 0.8;for centers I and II, resp. Center II arises from Zn sites of C 2 site symmetry while for center I assignment to either one of two sites with D2 site symmetry is possible. The larger hyperfine splitting constants as well as the superposition analysis favor the larger sites which are not occupied by Zn, but are partly occupied in the analogous Mn (and Co) compounds. Superposition analysis yields the same value of + 0.12 ± 0.02 cm-1 for the intrinsic zero field splitting parameter b̄2 of the bridging MnS4 units in both sites. gz is significantly higher than the free ion value indicating a higher degree of covalency than in Cds and CdGa2S4.

Observation of Fine-Structure Quantum Beats Following Stepwise Excitation in SodiumDStates

1974 ◽  
Vol 33 (18) ◽  
pp. 1063-1066 ◽  
Author(s):  
S. Haroche ◽  
M. Gross ◽  
M. P. Silverman
Keyword(s):  
Fine Structure ◽  
Quantum Beats

scholarly journals Electronic fine structure calculation of [Gd(DOTA)(H2O)]– using LF-DFT: The zero field splitting

2012 ◽  
Vol 15 (2-3) ◽  
pp. 250-254 ◽  
Author(s):  
Florian Senn ◽  
Lothar Helm ◽  
Alain Borel ◽  
Claude A. Daul
Keyword(s):  
Fine Structure ◽  
Structure Calculation ◽  
Zero Field ◽  
Zero Field Splitting ◽  
Field Splitting

Quantum beats and fine structure in attosecond chronoscopy of strong-field photoionization of atoms

2008 ◽  
Vol 82 (1) ◽  
pp. 13001 ◽  
Author(s):  
A. K. Kazansky ◽  
N. M. Kabachnik ◽  
I. P. Sazhina
Keyword(s):  
Fine Structure ◽  
Strong Field ◽  
Quantum Beats

Zero-Field Quantum Beats in the Electron-Impact Excitation of Sodium

1981 ◽  
Vol 46 (24) ◽  
pp. 1569-1571 ◽  
Author(s):  
P. J. O. Teubner ◽  
J. E. Furst ◽  
M. C. Tonkin ◽  
S. J. Buckman
Keyword(s):  
Electron Impact ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Quantum Beats ◽  
Zero Field

Potential-energy curves, zero-field splittings, and radiative lifetimes for low-lying states of AsH

1987 ◽  
Vol 65 (2) ◽  
pp. 155-164 ◽  
Author(s):  
Toshio Matsushita ◽  
Christel M. Marian ◽  
Rainer Klotz ◽  
Sigrid D. Peyerimhoff
Keyword(s):  
Fine Structure ◽  
Potential Energy ◽  
Ground State ◽  
Zero Order ◽  
Potential Energy Curves ◽  
Basis Set ◽  
Zero Field ◽  
Spin Orbit ◽  
Spin Orbit Interactions ◽  
Π State

Large-scale multireference configuration-interaction (MRD-CI) calculations in an atomic-orbital (AO) basis set containing up to f functions on As and d on hydrogen are employed to study the potential-energy curves of the π2(X3Σ−, a1Δ, b1Σ+), the σ → π, and the π → σ3.1Π states; a large number of σ → σ* states; and the lowest π → s,p Rydberg series. The σ → σ* states are strongly repulsive and exhibit numerous interactions with the Rydberg members causing predissociation. The probabilities for the spin-forbidden transitions from b1Σ+and a1Δ to the X3Σ−ground state as well as the zero-field splittings of theX3Σ−and A3Π states have been evaluated by employing a variational perturbation scheme in which the zero-order wave functions are MRD-CI expansions. The perturber states are determined by their spin-orbit interactions, which are calculated by employing the Breit–Pauli one- and two-electron spin-orbit operator. The radiative lifetime of the b1Σ+ state is predicted to be 0.35 ms, whereby the dominant mechanism is deactivation to the ms = ±1 component.The parallel transition is found to be much weaker. The lifetime of a1Δ is calculated to be 22 ms, whereby the process [Formula: see text] is favored. Both b–X and a–X transitions borrow their intensity primarily from the A3Π–X3Σ− transition and, furthermore, the 1Π–a1Δ and higher 3,1Π state spin-allowed transitions. The probability for the quadrupole b–a transition is evaluated to be three orders of magnitude smaller than the b–X transition. The calculated zero-field splitting of the X3Σ− ground state amounts to 101.4 cm−1, and the fine-structure splitting between the 2, 1, and 0+ components of the A3Π state evaluated to be 544.5 and 674.4 cm−1, respectively, in good accord with experimental results; whereas the calculated Λ doubling of the0+–0− fine-structure levels of the A3Π state (35.2 cm−1 vs. 44.72 cm−1) is too small in the present treatment. The dependence of spin-orbit effects and transition probabilities on AO basis sets and relativistic corrections to the zero-order Hamiltonian are discussed, and it is concluded that lifetime calculations for spin-forbidden processes in first- and second-row molecules can be extended in a fairly straightforward manner to systems with considerable spin-orbit interactions.

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