Temperature dependence of muonium spin exchange with O2 in the range 88 K to 478 K

1984 ◽  
Vol 18 (1-4) ◽  
pp. 703-708 ◽  
Author(s):  
M. Senba ◽  
D. M. Garner ◽  
D. J. Arseneau ◽  
D. G. Fleming
Keyword(s):  
Temperature Dependence ◽  
Spin Exchange ◽  
Muonium Spin

scholarly journals Temperature dependence of spin exchange frequency shifts in H-H collisions

1975 ◽  
Vol 36 (12) ◽  
pp. 281-284 ◽  
Author(s):  
M. Desaintfuscien ◽  
J. Viennet ◽  
C. Audouin ◽  
J. Vanier
Keyword(s):  
Temperature Dependence ◽  
Spin Exchange ◽  
Frequency Shifts ◽  
Exchange Frequency

scholarly journals Столкновения с участием поляризованных щелочных атомов цезия и лития

2020 ◽  
Vol 128 (4) ◽  
pp. 483
Author(s):  
В.А. Картошкин
Keyword(s):  
Magnetic Resonance ◽  
Frequency Shift ◽  
Temperature Dependence ◽  
Cross Section ◽  
Cross Sections ◽  
Ground State ◽  
Resonance Line ◽  
Spin Exchange ◽  
Interaction Potentials ◽  
The Real

The cross section and frequency shift of the magnetic resonance line for the spin exchange are calculated for a collision of lithium and cesium atoms in the ground state. The calculation was carried out on the basis of data on the singlet (X1Sigma+) and triplet (a3Sigma+) interaction potentials of the 7Li133Cs dimer. The transfer from the energy to the temperature dependence of the real and imaginary parts of the complex cross sections for a spin exchange allows us to obtain information both the broadening of the magnetic resonance line of the atoms under study and the frequency shift of the magnetic resonance upon their collision.

Chlorine NQR Spin-Lattice Relaxation and Electron Spin Dynamics in Paramagnetic [Co(H2O)6[PtCl6]

1991 ◽  
Vol 46 (12) ◽  
pp. 1103-1107 ◽  
Author(s):  
Motohiro Mizuno ◽  
Tetsuo Asaji ◽  
Atsushi Tachikawa ◽  
Daiyu Nakamura
Keyword(s):  
Temperature Dependence ◽  
Electron Spin ◽  
Correlation Time ◽  
Spin Exchange ◽  
Energy Gap ◽  
Spin Dynamics ◽  
Relaxation Times ◽  
Lattice Relaxation ◽  
Spin Lattice Relaxation ◽  
Spin Lattice

Abstract Chlorine NQR spin-lattice relaxation times T1Q were determined for [Co(H2O)6][PtCl6] at 4.2 400 K. Above ca. 350 K, T1Q decreased rapidly showing the onset of a reorientation of [PtCl6]2-. The activation energy Ea of this reorientation was determined as 125 ± 15 kJ mol-1. With decreasing temperature, T1Q showed a maximum at ca. 250 K. Below ca. 200 K, T1Q. is governed by the magnetic dipolar interaction between chlorines and paramagnetic Co2+ ions and is inversely proportional to the electron spin correlation time τe of CO2+ . τe is shown to be determined by the electron spin-lattice relaxation time T1e and the temperature independent correlation time rs for the spin-exchange between neighbouring ions above and below ca. 50 K, respectively. The temperature dependence of T1e is explained by assuming the Orbach process with an energy gap A/k of 530 + 20 K as T1e = 5 x 10-14 exp(530/T)s. τs was estimated to be 0.9 x 10-10 s. The temperature dependence of the ESR linewidth of Mn2+ impurities in single crystal was also measured, intending to study Co2+ spin dynamics. The limit of the ESR method is discussed by comparing the obtained results with those of the NQR method

Muonium spin‐exchange in low pressure gases: Mu+O2 and Mu+NO

1980 ◽  
Vol 73 (6) ◽  
pp. 2751-2759 ◽  
Author(s):  
Donald G. Fleming ◽  
Randall J. Mikula ◽  
David M. Garner
Keyword(s):  
Spin Exchange ◽  
Low Pressure ◽  
Muonium Spin

Discussion of Temperature Dependence of Wall and Spin Exchange Effects in the Hydrogen Maser

Metrologia ◽  
1977 ◽  
Vol 13 (3) ◽  
pp. 125-130 ◽  
Author(s):  
M Desaintfuscien ◽  
J Viennet ◽  
C Audoin
Keyword(s):  
Temperature Dependence ◽  
Spin Exchange ◽  
Hydrogen Maser ◽  
Exchange Effects
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