Topic
Nuclear quadrupole resonance
About: Nuclear quadrupole resonance is a research topic. Over the lifetime, 3531 publications have been published within this topic receiving 38801 citations. The topic is also known as: Nuclear quadrupole resonance spectroscopy & NQR.
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TL;DR: In this paper, a set of non-linear dynamical equations for monopole and quadrupole moments of nuclei is derived from the TDHF equation using the Wigner function moments.
12 citations
Journal Article•
TL;DR: Nuclear quadrupole resonance is presented as a method for the study of solid hydrogen bonded materials and correlations may be used to determine the proton position in a hydrogen bond and some other structural parameters from the NQR data.
Abstract: Nuclear quadrupole resonance is presented as a method for the study of solid hydrogen bonded materials. NQR study of hydrogen bonds in ferroelectric and paraelectric KH2PO4, antiferroelectric and paraelectric squaric acid, ferroelectric croconic acid and antiferroelectric and paraelectric cocrystal 5'-dimethyl-2, 2'-bipyridine - chloranilic acid (1:1) are discussed in more details. A 14N NQR study of the strong short O-HKN hydrogen bond in two polymorphic forms of cocrystal isonicotinamide-oxalic acid (2:1) is presented as well. Various correlations between the NQR parameters and between the NQR and structural parameters have been observed. These correlations may be used to determine the proton position in a hydrogen bond and some other structural parameters from the NQR data.
12 citations
TL;DR: In this paper, the difference in the lightly doped impurity effects on the local magnetic correlation between magnetic Ni and nonmagnetic Zn impurities has been studied by the planar 63 Cu nuclear spin-lattice re...
Abstract: The difference in the lightly doped impurity effects on the local magnetic correlation between magnetic Ni and nonmagnetic Zn impurities has been studied by the planar 63 Cu nuclear spin-lattice re...
12 citations
TL;DR: The nuclear quadrupole resonance in arsenic metal, in the temperature range 42 K - 396 K, has been studied e 2 qQ/h at 42 K is 47123 MHz.
12 citations
TL;DR: In this paper, nuclear quadrupole resonance (NQR) experiments were performed on glassy As{sub x}Se{sub 1-x} to study the local structural order.
Abstract: Nuclear quadrupole resonance (NQR) experiments were performed on glassy As{sub x}Se{sub 1-x} to study the local structural order. The bonding in As{sub x}Se{sub 1-x} is governed by preferential bonding (chemical ordering) between arsenic and selenium at arsenic concentrations x{ =}0.45 the glasses are inhomogeneous with the presence of local regions of different composition. Measurements of the NQR spin echo intensity identify regions formed by arsenic atoms bonded to zero, one, two, or three selenium atoms. The NQR spectral line shapes and the longitudinal relaxation times suggest that these regions have a more ordered structure as compared to the homogeneous samples with low arsenic content. The existence of a small concentration of crystalline inclusions in amorphous As{sub 0.60}Se{sub 0.40} is also suggested.
12 citations