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Resonant Energy Transfer in Ruby under Magnetic Field

Maurizio Ferrari, M. Montagna, Lorenzo Gonzo A +3 more

De Gruyter eBooksDec 31, 19840 citations

Reversed photon echo study of relaxation processes in ruby in a zero magnetic field

В. А. Зуйков, V. V. Smartsev, A. S. Traiber

Optics and SpectroscopyOct 1, 19830 citations

The Effect of Cross Relaxation on Population Inversion in Ruby

Давид Николаевич Клышко, V. S. Tumanov, L. A. Ushakova

Journal of Experimental and Theoretical PhysicsJan 1, 19630 citations

Magnetic field- and concentration-dependent photon echo relaxation in ruby with simple exponential decay

P. F. Liao, Sven R. Hartmann

Optics CommunicationsAug 1, 197345 citations

Resonant energy transfer in ruby between single ions and fourth-nearest-neighbour pairs

M. Montagna, G Nardon, Oreste Pilla +1 more

The resonant energy transfer in ruby between single ions and fourth-nearest-neighbour pairs was investigated at various temperatures and concentrations, with the application of an external magnetic field. The results give direct experimental evidence of the resonant mechanism, which dominates the transfer rate. Spin-memory effects are observed during pair relaxation after transfer. A simple model is presented which satisfactorily accounts for the observed dependence of the transfer on the field.

Journal of Physics C Solid State PhysicsApr 10, 19871 citation

Cross-Relaxation Effects in a Ruby L?Band (1440 Mc/s) Maser at Low Magnetic Fields

G S Bogle, F. F. Gardner

The reversals of maser behaviour which occur in ruby at low fields on cooling from 80° to 4 oK are explained in terms of cross-relaxation transitions (resonant interchanges of energy between neighbouring paramagnetic ions). For an angle of 29° between the magnetic field and the crystal axis a cross-relaxation process has been demonstrated which involves groups of three ions and has a transition probability of 700± 100 per second in 0·013% ruby. The profile of the cross-relaxation resonance has a half-width of 190±30 Mcts at half-intensity, and has an approximately Gaussian shape. It should be possible to obtain useful low-field L-band maser action at 4 oK by pumping V41 with the magnetic field nearly perpendicular to the crystal axis, and also at 80 oK using a concentration ten times higher, i.e. 0·13%The reversals of maser behaviour which occur in ruby at low fields on cooling from 80° to 4 oK are explained in terms of cross-relaxation transitions (resonant interchanges of energy between neighbouring paramagnetic ions). For an angle of 29° between the magnetic field and the crystal axis a cross-relaxation process has been demonstrated which involves groups of three ions and has a transition probability of 700± 100 per second in 0·013% ruby. The profile of the cross-relaxation resonance has a half-width of 190±30 Mcts at half-intensity, and has an approximately Gaussian shape. It should be possible to obtain useful low-field L-band maser action at 4 oK by pumping V41 with the magnetic field nearly perpendicular to the crystal axis, and also at 80 oK using a concentration ten times higher, i.e. 0·13%

Australian Journal of PhysicsSep 1, 19614 citations

Magnetic field effect on ion-pair transfer in ruby. Cross relaxations and resonant transfer

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Magnetic field effect on ion-pair transfer in ruby. Cross relaxations and resonant transfer

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