Nuclear-Spin Effects Are Important in Analyzing Spin-Exchange Experiments

1971 ◽  
Vol 3 (1) ◽  
pp. 500-502 ◽  
Author(s):  
Hyatt M. Gibbs
Author(s):  
M. M. Glazov

This chapter is devoted to one of key phenomena in the field of spin physics, namely, resonant absorption of electromagnetic waves under conditions where the Zeeman splitting of spin levels in magnetic field is equal to photon energy. This method is particularly important for identification of nuclear spin effects, because resonance spectra provide fingerprints of different involved spin species and make it possible to distinguish different nuclear isotopes. As discussed in this chapter the nuclear magnetic resonance provides also an access to local magnetic fields acting on nuclear spins. These fields are caused by the magnetic interactions between the nuclei and by the quadrupole splittings of nuclear spin states in anisotropic crystalline environment. Manifestations of spin resonance in optical responses of semiconductors–that is, optically detected magnetic resonance–are discussed.


1971 ◽  
Vol 26 (10) ◽  
pp. 1571-1577
Author(s):  
A. Assfalg ◽  
J. Fricke ◽  
J. Haas ◽  
E. Lüscher

Abstract Two methods are described to derive cross sections for spin exchange and spin depolarization of an indirectly pumped alkali vapor with zero nuclear spin. Either pulsed or sinusoidally modulated radiofrequency can be used to destroy the polarization of the indirectly pumped (secondary) system, while the intensity of the transmitted pumping light is observed. Cross sections follow from the indirectly produced depolarization of the primary system i. e. from the change in pumping light transmission or from the phase angle between the rf modulation and the intensity oscillations of the transmitted light. The quality of the two methods is tested by deriving cross sections for spin exchange between Cs and Rb and for depolarization of Rb in Argon buffer gas.


2009 ◽  
Vol 80 (2) ◽  
Author(s):  
Iris Reichenbach ◽  
Paul S. Julienne ◽  
Ivan H. Deutsch

2009 ◽  
Vol 79 (2) ◽  
Author(s):  
Th. A. Paul ◽  
J. Liu ◽  
F. Merkt
Keyword(s):  

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