Rotational dynamics of water molecules near biological surfaces with implications for nuclear quadrupole relaxation

2016 ◽  
Vol 18 (35) ◽  
pp. 24620-24630 ◽  
Author(s):  
Daniel Braun ◽  
Michael Schmollngruber ◽  
Othmar Steinhauser
Keyword(s):  
Computational Study ◽  
Rotational Dynamics ◽  
Water Molecules ◽  
Specific Information ◽  
Quadrupole Relaxation ◽  
Biological Surfaces ◽  
Nuclear Quadrupole ◽  
Nuclear Quadrupole Relaxation

This computational study on NQR of water exemplifies that different experiments project specific information out of the complete dynamics.

81Br Nuclear Quadrupole Relaxation in Aluminium Tribromide

1995 ◽  
Vol 50 (8) ◽  
pp. 737-741 ◽  
Author(s):  
Noriaki Okubo ◽  
Mutsuo Igarashi ◽  
Ryozo Yoshizaki
Keyword(s):  
Room Temperature ◽  
Lattice Relaxation ◽  
Lattice Relaxation Time ◽  
Spin Lattice Relaxation ◽  
Quadrupole Relaxation ◽  
Spin Lattice ◽  
Raman Process ◽  
Nuclear Spin Lattice Relaxation ◽  
Nuclear Quadrupole ◽  
Nuclear Quadrupole Relaxation

Abstract The 81Br nuclear spin-lattice relaxation time in AlBr3 has been measured between 8 K and room temperature. The result is analyzed using the theory of the Raman process based on covalency. A Debye temperature of 67.6 K and covalency of 0.070 and 0.072 for terminal and 0.022 for bridging bonds are obtained. The correspondence of the latter values to those obtained from the NQR frequencies is low, in contrast to the previously examined compounds.

Anomaly of Nuclear Quadrupole Relaxation in Cu2O Prepared at Low Temperatures

1986 ◽  
Vol 41 (1-2) ◽  
pp. 382-385 ◽  
Author(s):  
J. Kasprzak ◽  
J. Lus ◽  
J. Pietrzak
Keyword(s):  
Temperature Dependence ◽  
Cuprous Oxide ◽  
Thermal Processing ◽  
Low Temperatures ◽  
Room Temperature ◽  
Quadrupole Relaxation ◽  
Temperature Dependences ◽  
Powder Samples ◽  
Nuclear Quadrupole ◽  
Nuclear Quadrupole Relaxation

The 63Cu and 65Cu NQR transitions in powder samples of cuprous oxide have been investigated from 77 to 500 K and at room temperature after annealing up to 1100 K Significant differences in T1 , NQR linewidth Δv, and their temperature dependences were found among the samples prepared in different ways. For C u20 samples obtained in low temperatures (below 380 K), the temperature dependence of T1 below 380 K is o f activation character with Ea = 0.07 eV. These results are interpreted in terms of an electron hopping mechanism. Thermal processing of these samples permits to obtain irreversible electronic state and then the spectroscopic parameters are the same as for the samples obtained in high temperatures (above 1320 K).

scholarly journals 14N Nuclear Quadrupole Relaxation inN-Methylpiperidine

1982 ◽  
Vol 55 (1) ◽  
pp. 305-306 ◽  
Author(s):  
Hisao Negita ◽  
Tsuneo Kubo ◽  
Michio Maekawa
Keyword(s):  
Quadrupole Relaxation ◽  
Nuclear Quadrupole ◽  
Nuclear Quadrupole Relaxation
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