Probing an Excited State Transition Using Quantum Beats

2018 ◽  
pp. 27-38
Author(s):  
Christopher G. Wade
Keyword(s):  
Excited State ◽  
State Transition ◽  
Quantum Beats

LIFETIME MEASUREMENTS OF STATES IN O18 AND Ne22

1964 ◽  
Vol 42 (6) ◽  
pp. 1311-1323 ◽  
Author(s):  
M. A. Eswaran ◽  
C. Broude
Keyword(s):  
Excited State ◽  
Ground State ◽  
Doppler Shift ◽  
State Transition ◽  
Branching Ratios ◽  
Ground State Transition ◽  
Lifetime Measurements ◽  
Doppler Shift Attenuation ◽  
First Excited State ◽  
Doppler Shift Attenuation Method

Lifetime measurements have been made by the Doppler-shift attenuation method for the 1.98-, 3.63-, 3.92-, and 4.45-Mev states in O18 and the 1.28-, 3.34-, and 4.47-Mev states in Ne22, excited by the reactions Li7(C12, pγ)O18 and Li7(O16, pγ)Ne22. Branching ratios have also been measured. The results are tabulated.[Formula: see text]The decay of the 3.92-Mev state in O18 is 93.5% to the 1.98-Mev state and 6.5% to the ground state and of the 4.45-Mev state 74% to the 3.63-Mev state, 26% to the 1.98-Mev state, and less than 2% to the ground state. In Ne22, the ground-state transition from the 4.47-Mev state is less than 2% of the decay to the first excited state.

scholarly journals Resonant photoluminescence and excitation spectroscopy of CdSe/ZnSe and CdTe/ZnTe self-assembled quantum dots

2002 ◽  
Vol 737 ◽  
Author(s):  
T. A. Nguyen ◽  
S. Mackowski ◽  
H. Rho ◽  
H. E. Jackson ◽  
L. M. Smith ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Excited State ◽  
Ground State ◽  
State Transition ◽  
Longitudinal Optical ◽  
Photoluminescence Spectra ◽  
Single Quantum Dots ◽  
Major Carrier ◽  
Excitation Mechanisms ◽  
Self Assembled

ABSTRACTWe show that two major carrier excitation mechanisms are present in II-VI self-assembled quantum dots. The first one is related to direct excited state – ground state transition. It manifests itself by the presence of sharp and intense lines in the excitation spectrum measured from single quantum dots. Apart from these lines, we also observe up to four much broader excitation lines. The energy spacing between these lines indicates that they are associated with absorption related to longitudinal optical phonons. By analyzing resonantly excited photoluminescence spectra, we are able to separate the contributions from these two mechanisms. In the case of CdTe dots, the excited state – ground state relaxation is important for all dots in ensemble, while phonon-assisted processes are dominant for the dots with smaller lateral size.

Picosecond investigations of the excited-state transition at 532 nm in King's complex [(C5H5)Fe(CO)]4 and synthesized analogs

1994 ◽  
Vol 98 (1) ◽  
pp. 216-221 ◽  
Author(s):  
G. R. Allan ◽  
S. J. Rychnovsky ◽  
C. H. Venzke ◽  
Thomas F. Boggess ◽  
Lee Tutt
Keyword(s):  
Excited State ◽  
State Transition ◽  
532 Nm

Saturation and isotopic shift of the Kr 84 excited-state transition at 1547.825 nm

1995 ◽  
Vol 7 (1) ◽  
pp. 65-67 ◽  
Author(s):  
U.H.P. Fischer ◽  
C. von Helmolt
Keyword(s):  
Excited State ◽  
State Transition ◽  
Isotopic Shift

THE NEUTRON CAPTURE 7-RAYS FROM POTASSIUM

1953 ◽  
Vol 31 (6) ◽  
pp. 927-931 ◽  
Author(s):  
G. A. Bartholomew ◽  
B. B. Kinsey
Keyword(s):  
Excited State ◽  
Potassium Carbonate ◽  
Ground State ◽  
Neutron Capture ◽  
State Transition ◽  
Ground State Transition ◽  
Γ Rays ◽  
Γ Ray

The capture γ-rays from potassium have been re-examined with greater resolution than was used in previous experiments. The upper end of the spectrum has been carefully studied both with a sample of natural potassium carbonate and with another in which the potassium was enriched in K40. From a comparison of the spectra two γ-rays with energies of 9.39 ± 0.06 and 8.45 ± 0.02 Mev. are assigned to capture by that isotope. The strong γ-ray at 7.757 ± 0.008 Mev. previously ascribed to the ground state transition in K40 is now found to represent a transition to a low-lying excited state in that nucleus.

Time-resolved Raman studies on Al2 O3 : Cr3+ : lifetime measurements of the excited-state transition Ē → 2Ā

2010 ◽  
Vol 42 (5) ◽  
pp. 1109-1113 ◽  
Author(s):  
Yeny A. Tobon ◽  
Denis Bormann ◽  
Aurélien Canizares ◽  
Nicole Raimboux ◽  
Patrick Simon
Keyword(s):  
Excited State ◽  
State Transition ◽  
Lifetime Measurements ◽  
Time Resolved

Excited state hyperfine structures in 133Cs using quantum beat spectroscopy

1991 ◽  
Vol 69 (7) ◽  
pp. 808-812 ◽  
Author(s):  
J. Sagle ◽  
W. A. van Wijngaarden
Keyword(s):  
Excited State ◽  
Hyperfine Interaction ◽  
Quadrupole Moment ◽  
Magnetic Dipole ◽  
Electric Quadrupole ◽  
Quantum Beat ◽  
Quantum Beats ◽  
Electric Quadrupole Moment ◽  
Coupling Constant ◽  
Hyperfine Structures

Quantum beats arising from the hyperfine interaction were observed in the fluorescence produced when the 8D3/2, 9D3/2, and 10D3/2 states of 133Cs radiatively decayed to the 6P1/2 state. The period of the beats equals the reciprocal of the magnetic dipole coupling constant a since the 133Cs nucleus has a negligibly small electric quadrupole moment. The results are a = 3.95 ± 0.01, 2.38 ± 0.01, and 1.54 ± 0.02 MHz for the 8D3/2, 9D3/2, and 10D3/2 states, respectively.

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