نتایج جستجو برای: nuclear quadrupole resonance
تعداد نتایج: 437598 فیلتر نتایج به سال:
The molecular beam electric resonance technique has been used to examine the hyperfine spectrum of CsF to determine the nuclear quadrupole interaction of the cesium nucleus. A total of 95 transitions in vibrational states v5025 and rotational states J5128 have been included in a fit to determine the cesium nuclear quadrupole and spin–rotation interactions, the fluorine spin–rotation interaction...
Nuclear quadrupole resonance (NQR) is the study of the energy splittings due to interaction of the electric quadrupole moment of the nucleus with the electric field gradient that exists at the nuclear site. Many nuclei with spins greater than Vz have a quadrupole moment and most of these quadrupole moments have been measured and tabulated. Thus, the information gained by studying NQR is the mag...
Fourier Transform spectrometry has been applied to nuclear quadrupole resonance (NQR). This increases the sensitivity and avoids the creation of side-bands produced by the usual superregenerative spectrometer. It provides also the possibility of determining the true spectral line-width and studying the fine structure of NQR spectral lines.
D. Budker, 2, ∗ D. F. Kimball, † S. M. Rochester, ‡ and J. T. Urban § Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300 Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 Materials Sciences Division, Lawrence Berkeley National Laboratory, and Department of Chemistry, University of California at Berkeley, Berkele...
In recent years, Nano technology and its application have moved to discovering chemicaltherapy drugs. Research, development for finding new targets in tumors, targeting methodsand stabilizing the nano particle in targeted cells is based on drug delivery and its crucialeffect. Examining the computational controlled drug delivery by graphene sheets has becomevery significant due to numerous side ...
This experiment is an example of magnetic resonance a class of experiments in which very small energy separations (typically 10−7 eV) of quantum mechanical states are determined by measuring the frequency of a sinusoidally varying magnetic field, which induces transitions between the states. Some examples of magnetic resonance experiments are: nuclear magnetic resonance [1, 8], nuclear quadrupo...
We report the application of our dc SQUID (superconducting quantum interference device) spectrometer [C. Connor, J. Chang, and A. Pines, Rev. Sci. Instrum. 61, 1059( 1990)] to nuclear quadrupole resonance (NQR) studies of aluminum-27, and boron-II in crystalline and glassy solids. Our results give eqQ /h = 2.38 MHz and 1] = 0.0 for a-A120 3 at 4.2 K. For the natural mineral petalite (LiAISi4 01...
NQR of Cu in YBa2Cu3O ö 95 was investigated before and after low-temperature electron irradi ation as well as after annealing at several distinct temperatures up to 440 K. Irradiation with 2.76 MeV electrons (fluence (f)t = 2.2 ■ 1023 e_/m2) decreased the critical temperature Tc from 91.8 K to 89.5 K. The NQR spectra indicate that the e~ irradiation displaces so-called 0(4) atoms in the Cu-O c...
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