2 edition of steady-state spectrometer for nuclear quadrupole resonance. found in the catalog.
steady-state spectrometer for nuclear quadrupole resonance.
Gregory Langton Baker
Written in English
Thesis (M.Sc.), Dept. of Physics, University of Toronto
|Contributions||Armstrong, R. L. (supervisor), Toronto, Ont. University. Theses (M.Sc.)|
|LC Classifications||LE3 T525 MSC 1967 B34|
|The Physical Object|
|Number of Pages||73|
Solid‐state nuclear magnetic resonance (SSNMR) spectroscopy has largely overtaken nuclear quadrupole resonance (NQR) spectroscopy for the study of quadrupolar nuclei. In addition to information on the electric field gradient, SSNMR spectra may offer additional information concerning other NMR interactions such as magnetic shielding. Anal. Chem. All Publications/Website. OR SEARCH CITATIONS.
The Second Edition of the Encyclopedia of Spectroscopy and Spectrometry pulls key information into a single source for quick access to answers and/or in-depth examination of topics. "SPEC-2" covers theory, methods, and applications for researchers, students, and professionals—combining proven techniques and new insights for comprehensive coverage of . A multi-resonant nuclear quadrupole resonance (NQR) inspection system is disclosed. The system comprises a multi-resonant circuit 16 tuned to simultaneously transmit and receive a plurality of signals. The receiver circuit comprises passive circuit protection in the form of a lumped element quarter-wave unit 10 and a signal generator 6 and frequency mixer 8 are .
SIMULATION OF MAGNETIC FIELD TOPOLOGY IN A SADDLE-SHAPED COIL OF NUCLEAR QUADRUPOLE RESONANCE SPECTROMETER By A. Samila. Full Article PDF ( KB) Abstract: A topology of high-frequency field intensity in the work area of a saddle-shaped coil for a nuclear qaudrupole resonance spectrometer was studied. A sensitive Fourier-transform spectrometer based on a dc SQUID (Superconducting QUantum Interference Device) has been developed for the direct detection of nuclear magnetic resonance (NMR) in zero applied magnetic field and pure nuclear quadrupole resonance (NQR) at .
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Nuclear quadrupole resonance spectroscopy or NQR is a chemical analysis technique related to nuclear magnetic resonance ().Unlike NMR, NQR transitions of nuclei can be detected in the absence of a magnetic field, and for this reason NQR spectroscopy is referred to as "zero Field NMR."The NQR resonance is mediated by the interaction of the electric field gradient (EFG) with the quadrupole.
Nuclear magnetic resonance spectroscopy, most commonly known as NMR spectroscopy or magnetic resonance spectroscopy (MRS), is a spectroscopic technique to observe local magnetic fields around atomic sample is placed in a magnetic field and the NMR signal is produced by excitation of the nuclei sample with radio waves into nuclear magnetic resonance.
Thomas Meier, in Annual Reports on NMR Spectroscopy, Other Techniques. One of the first high pressure NMR experiments was conducted by Benedek and Purcell , using a so-called ‘high pressure bomb’ to investigate nuclear spin relaxation processes in organic liquids, pressure effects on pure nuclear quadrupole resonances , as well as the electronic.
B Quadrupole resonance. A nucleus steady-state spectrometer for nuclear quadrupole resonance. book spin I> 1 2 has an electric quadrupole moment.
Several such nuclei are listed in Table The crystalline electric fields at an atomic site with symmetry less than cubic split the nuclear spin levels in a manner that depends on the site symmetry, and the spacings between the levels are measured. This chapter discusses quadrupole effects in nuclear magnetic resonance studies of solids.
The first evidence that many nuclei possess magnetic moments came from the. Nuclear Quadrupole Resonance Spectroscopy Review nuclear quadrupole moments, Q – A negative value for Q denotes a distribution of charge that is "football-shaped", i.e. a sphere elongated at the poles; a positive value corresponds to a flattened sphere.] Some examples of nuclear quadrupole moments Nucleus I Q /m2 2H 1 x 14N 1 1.
A technique is described for locking a rf spectrometer to a pure quadrupole resonance signal. Since the quadrupole resonance frequency of a nucleus in a solid can be quite sensitive to changes in temperature and pressure, a quadrupole resonance signal is of potential interest in the measurement of these variables.
The application of a locked rf spectrometer as a precise nuclear resonance. Combining Fourier transform nuclear quadrupole resonance (FT-NQR) spectroscopy and mass spectrometry (MS) to study the electronic structure of titanocene dichlorides Jiří Kubišta,* a Martin Civiš, a Patrik Španěl a and Svatopluk Civiš a.
Nuclear Quadrupole Resonance (NQR) spectroscopy has been known for 70 years. It is suitable for the study of measured (poly)crystalline chemical compounds containing quadrupole nuclei (nuclei with spin I ≥ 1) where the characteristic NQR frequencies represent the fingerprints of these compounds.
NUCLEAR M AGNETIC RESONANCE SP ECTROSCOPY Nuc lear Quadrupole Resonance Applications theory offered Townes and Dailey. The gradient of an. A NUCLEAR QUADRUPOLE RESONANCE SPECTBOHETER by BEVERLEY1 JOAN FULTON B.A., University of British Columbia A Thesis submitted la partial fulfilment of the requirements for the degree of Master of Arts in the Department of Physics We accept this thesis as conforming to the standard required for the degree of Master of Arts The University of British Columbia.
the important coupling is between the nuclear quadrupole moment, indicated schematically in Figure K.1, and the second derivative of the electric potential (equivalently, the gradient of the electric field).
This is a key result. The quadrupole moment, nonzero only for nuclei with spin quantum number I greater than or equal to 1, is a nuclear. Topics include techniques of electron, neutron, and x-ray diffraction and nuclear magnetic, nuclear quadropole, and electron spin resonance.
The publication takes a look at mass spectrometry and molecular beams, including molecular structural applications, chemical kinetics, beam formation and detection, molecular beam optics, and spectroscopy.
A nuclear quadrupole resonance spectrometer, the Robinson circuit adapted with field‐effect transistors, has operated satisfactorily up to 30 MHz with rf levels ranging from 40 mV to V peak to peak across the sample coil.
The S/N ratio of 14 N in hexamethylenetetramin is 85 at room temperature and at 77 K, with a sample volume of 6 cm 3 and a time constant of 10 s.
Nuclear quadrupole resonance has much in common with nuclear mag-netic resonance (NMR), the funda-mental physical process that makes magnetic resonance imaging possible. Nuclear magnetic resonance, first demonstrated intakes advan-tage of the fact that certain atomic nu-clei possess magnetic dipole moments—.
The remaining chapters examine several spectroscopic methods, such as matrix isolation, mass, soft X-ray, and Mössbauer spectroscopies, high-resolution NMR, and nuclear quadrupole resonance, with a particular emphasis on their effective application in. Rudakov T N and Belyakov A V Modifications of the steady-state free- precession sequences for the detection of pure nuclear quadrupole resonance J.
Phys.D: 31 – Google Scholar. This article is cited by 17 publications. Patrick J. Walsh, Alice E. Lurain, and, Jaume Balsells.
Use of Achiral and Meso Ligands To Convey Asymmetry in Enantioselective Catalysis. Books. Publishing Support. Login. Reset your password. If you have a user account, you will need to reset your password the next time you login.
You will only need to do this once. Find out more. IOPscience login / Sign Up. Hardback. Condition: New. ed. Language: English. Brand new Book. Volume III/39 continues the compilation of nuclear quadrupole resonance spectroscopy data of solid substances which started in with volumes III/20 and III/ The literature from the beginning of nuclear quadrupole resonance spectroscopy in to is covered.
Nuclear magnetic resonance; Nuclear magnetic resonance decoupling; Nuclear magnetic resonance in porous media; Nuclear orientation; Nuclear Overhauser effect; Nuclear quadrupole resonance; Pake doublet; Phosphorus NMR; Protein nuclear magnetic resonance spectroscopy; Proton Enhanced Nuclear Induction Spectroscopy; Proton NMR; .This discovery, known as nuclear magnetic resonance, ‘ and the experimental techniques that have developed, are applied in many different scientific fields.
Andrew (l, p.5) mentioned that by ä over #00 publications had already appeared. There are a number of good articles that review the theory and applications of nuclear magnetlc resonance.