The Pure Nuclear Electric Quadrupole Resonance ofN14in Three Molecular Solids

1952 ◽  
Vol 85 (6) ◽  
pp. 1062-1062 ◽  
Author(s):  
G. D. Watkins ◽  
R. V. Pound
Keyword(s):  
Electric Quadrupole ◽  
Molecular Solids ◽  
Quadrupole Resonance

Nuclear Electric Quadrupole Resonance inβ-Gallium

1972 ◽  
Vol 28 (15) ◽  
pp. 970-971 ◽  
Author(s):  
S. L. Segel ◽  
R. D. Heyding ◽  
E. F. W. Seymour
Keyword(s):  
Electric Quadrupole ◽  
Quadrupole Resonance

Nuclear Quadrupole Resonance of Iodine in Molecular Solids

1953 ◽  
Vol 21 (12) ◽  
pp. 2237-2238 ◽  
Author(s):  
S. Kojima ◽  
K. Tsukada ◽  
S. Ogawa ◽  
A. Shimauchi
Keyword(s):  
Nuclear Quadrupole Resonance ◽  
Molecular Solids ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole

THE ELECTRON SPIN RESONANCE OF Fe+3 IN SINGLE CRYSTALS OF SPODUMENE

1965 ◽  
Vol 43 (12) ◽  
pp. 2262-2275 ◽  
Author(s):  
A. Manoogian ◽  
F. Holuj ◽  
J. W. Carswell
Keyword(s):  
Electron Spin Resonance ◽  
Single Crystals ◽  
Electron Spin ◽  
Ground State ◽  
Electric Quadrupole ◽  
Spin Hamiltonian ◽  
Electric Field Gradients ◽  
Field Gradients ◽  
Spin Resonance ◽  
Quadrupole Resonance

The electron spin resonance (ESR) spectrum of Fe+3 in spodumene, LiAl(SiO3)2, has been investigated at 24 kMc/sec. One set of five "allowed" transitions between the magnetic sublevels of the 6S5/2 ground state has been detected. The following values have been assigned to the parameters occurring in the spin Hamiltonian (eq. (1)) (bnm in gauss): gx = 2.0086 ± 50, gy = 2.0100 ± 50, gx ± 2.0046 ± 25, b20 = −1 430, b22 = −282, b40 = −20, b42 = 108, b44 = −182. Consideration of electric field gradients measured by methods of electric quadrupole resonance and of the orthorhombic parameters b20 and b22 did not lead to a unique assignment of the Fe+3 impurity to one of the two available cationic sites in spodumene.

Nuclear Quadrupole Resonance: The Present State and Further Development

1986 ◽  
Vol 41 (1-2) ◽  
pp. 453-462
Author(s):  
J. A. S. Smith
Keyword(s):  
Liquid Phase ◽  
Magnetic Fields ◽  
Electric Fields ◽  
Double Resonance ◽  
Electric Quadrupole ◽  
Coupling Constants ◽  
Resonance Spectroscopy ◽  
High Magnetic Fields ◽  
Quadrupole Interactions ◽  
Quadrupole Resonance

The importance of nuclear electric quadrupole interactions in chemistry, both present and future, depends very much on their power to resolve problems in electronic structure and molecular dynamics. Fortunately, the subject, by its very nature, is “multinuclear”; even if the ground state of a given nucleus is non-quadrupolar, there often exist excited nuclear states which are, an example being 19F, for which quadrupole coupling constants are now being published from angular correlation measurements. Other new techniques are constantly extending the range of the experiments, recent examples being the use of SQUID magnetometers to detect acoustic 121Sb and 123Sb quadrupole resonance in antimony metal and Fourier transform quadrupole resonance spectroscopy based on fast field cycling to measure 2H quadrupole interactions in powders. Recently, much work on quadrupole interactions in solids of half-integral spin nuclei such as 17O or 27Al has been pursued in two different ways; by quadrupole double resonance in natural abundance, and nuclear magnetic resonance in very high magnetic fields, for which enrichment of low-abundance nuclei such as 170 is often required. In the liquid phase, measurements are now sufficiently reliable for comparisons of changes in the nuclear electric quadrupole tensor from gas to liquid and solid phases to be made. The new methods of partial alignment of polar molecules in the liquid phase in strong electric fields, or magnetically anisotropic molecules in high magnetic fields, seem certain to contribute to these developments.

Nuclear Quadrupole Resonance of Bromine in Molecular Solids

1953 ◽  
Vol 21 (8) ◽  
pp. 1415-1416 ◽  
Author(s):  
S. Kojima ◽  
K. Tsukada ◽  
S. Ogawa ◽  
A. Shimauchi
Keyword(s):  
Nuclear Quadrupole Resonance ◽  
Molecular Solids ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole

Contribution of the electric quadrupole resonance in optical metamaterials

2008 ◽  
Vol 78 (12) ◽  
Author(s):  
David J. Cho ◽  
Feng Wang ◽  
Xiang Zhang ◽  
Y. Ron Shen
Keyword(s):  
Electric Quadrupole ◽  
Optical Metamaterials ◽  
Quadrupole Resonance
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