Nuclear spin $3/2$ electric quadrupole relaxation as a quantum computation process

2010 ◽  
Vol 10 (7&8) ◽  
pp. 653-668
Author(s):  
A.M. Souza ◽  
A. Gavini-Viana ◽  
I.S. Oliveira ◽  
R.S. Sarthour ◽  
R. Auccaise ◽  
...  
Keyword(s):  
Nuclear Spin ◽  
Quantum Noise ◽  
Electric Quadrupole ◽  
Short Review ◽  
Quantum Circuit ◽  
Quadrupole Relaxation ◽  
Redfield Theory ◽  
Computation Process ◽  
Theoretical Predictions ◽  
Quadrupolar Relaxation

In this work we applied a quantum circuit treatment to describe the nuclear spin relaxation. From the Redfield theory, we obtain a description of the quadrupolar relaxation as a computational process in a spin 3/2 system, through a model in which the environment is comprised by five qubits and three different quantum noise channels. The interaction between the environment and the spin 3/2 nuclei is described by a quantum circuit fully compatible with the Redfield theory of relaxation. Theoretical predictions are compared to experimental data, a short review of quantum channels and relaxation in NMR qubits is also present.

CHARMONIA PRODUCTION AT LHCB

2013 ◽  
Vol 28 (40) ◽  
pp. 1330037 ◽  
Author(s):  
ALEXANDER ARTAMONOV
Keyword(s):  
Short Review ◽  
Open Charm ◽  
Lhcb Experiment ◽  
Theoretical Predictions

In this article we present a short review on measurements of charmonia production at the LHCb experiment carried out during 2010, 2011 and 2012 data taking periods. The review covers the production of J/ψ, ψ(2S), χc, J/ψJ/ψ, as well as J/ψ in association with open charm. We also review the measurement of J/ψ polarization. The results are compared to theoretical predictions.

scholarly journals THE NUCLEAR SPIN RESONANCE SPECTRUM OF Al27 IN SPODUMENE

1958 ◽  
Vol 36 (10) ◽  
pp. 1295-1307 ◽  
Author(s):  
L. B. Robinson
Keyword(s):  
Nuclear Spin ◽  
Resonance Spectrum ◽  
Companion Paper ◽  
Quadrupole Interactions ◽  
Resonance Frequencies ◽  
Spin Resonance ◽  
Theoretical Predictions ◽  
Induction Type ◽  
First Time ◽  
Good Agreement

An experimental study has been made of the nuclear spin resonance spectrum of Al27 in a single crystal of spodumene (LiAl(SiO3)2) over a range of external magnetic field H0 wide enough [Formula: see text] to bridge for the first time the gap between pure quadrupole spectra (R = 0) and Zeeman spectra slightly perturbed by quadrupole interactions [Formula: see text]. Experimental results on the resonance frequencies and relative signal amplitudes obtained with an induction type of nuclear resonance spectrometer are described, and are found to be in good agreement with the theoretical predictions given in the preceding companion paper.

QUADRUPOLE RELAXATION FOR A SPIN I = 3/2: THE F19 N.M.R. SPECTRA OF BF3 AND ClO3F

1963 ◽  
Vol 41 (12) ◽  
pp. 3063-3069 ◽  
Author(s):  
J. Bacon ◽  
R. J. Gillespie ◽  
J. W. Quail
Keyword(s):  
Electric Quadrupole ◽  
Activation Energies ◽  
Kcal Mole ◽  
Molecular Reorientation ◽  
Quadrupole Relaxation

An expression is derived for the broadening of the components of the quartet obtained for the n.m.r. spectrum of nuclei coupled to a nucleus of spin 3/2 undergoing electric quadrupole relaxation. It is shown that the F19 spectra of BF3 and ClO3F at various temperatures may be satisfactorily interpreted by means of this expression. Activation energies for molecular reorientation of 1.4 kcal/mole for BF3 and 1.0 kcal/mole for ClO3F are obtained.

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