Results 171 to 180 of about 64,037 (214)

Pulse Fourier Transform Nuclear Magnetic Resonance Spectroscopy

Applied Spectroscopy, 1972
Recent advances in NMR spectroscopy allow one to study extremely dilute systems or nuclei which occur in low natural abundance and/or have poor sensitivity for NMR detection. This paper describes various pulse and pulse Fourier transform NMR techniques.
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A versatile pulse programmer for pulse nuclear magnetic resonance spectroscopy

Journal of Physics E: Scientific Instruments, 1972
A digital pulse programmer producing the standard pulse sequences required for pulse nuclear magnetic resonance spectroscopy is described. In addition, a 'saturation burst' sequence, useful in the measurement of long relaxation times in solids, is provided.
C E Tarr, M A Nickerson
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11B pulsed nuclear magnetic resonance study of HoB4

Current Applied Physics, 2015
Abstract 11B pulsed nuclear magnetic resonance (NMR) measurements were performed on a single crystal of HoB4 to investigate disorder-induced effects on the 4f spin structures and dynamics. The 11B NMR spectrum, shift, linewidth, and spin-lattice and spin–spin relaxation rates (1/T1 and 1/T2, respectively) were measured down to 3.5 K at a field of 8 T
Kihyeok Kang, Junghoon Kim, Moohee Lee, J.Y. Kim, B.K. Cho   +4 more
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27Al pulsed nuclear magnetic resonance study of CeAl2

Current Applied Physics, 2014
Abstract The magnetic properties and the electronic structures of a rare-earth aluminum intermetallic compound CeAl 2 are investigated by magnetic susceptibility measurements and 27 Al pulsed nuclear magnetic resonance (NMR) techniques. The magnetic susceptibility is strongly temperature-dependent, following a Curie–Weiss law down to ∼12 K, and ...
Kihyeok Kang, Moohee Lee
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Nuclear Transfer Effects in Nuclear Magnetic Resonance Pulse Experiments

The Journal of Chemical Physics, 1961
The Bloch equations for the nuclear magnetic resonance of a single nuclear species which is transferred between state environments having different relaxation times (T1 or T2) and different resonance frequencies have been solved for rf pulse experiments. Expressions have been obtained for the free precession signals in two-pulse experiments.
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Pulsed nuclear magnetic resonance studies in sickled erythrocytes

Journal of Biological Physics, 1975
Pulsed proton magnetic resonance studies were made to determine T1 (spin-lattice) and T2 (spin-spin) relaxation times for normal and sickled blood cells in the oxygenated and deoxygenated states as a function of temperature between 0°C and 37°C. It was found that the sickling phenomenon affects T2 values but not T1 values in these cells.
Anthony A. Silvidi, Dave J. Farrell
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Radio-Frequency Bridge for Pulsed Nuclear Magnetic Resonance

Review of Scientific Instruments, 1963
A symmetrical rf bridge for pulsed nuclear magnetic resonance experiments is described. The bridge is non-microphonic and permits the quick damping of the transients from rf driving pulses without the degrading of free induction decay signals.
Irving J. Lowe, Dennis E. Barnaal
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Digital pulse generator for nuclear magnetic resonance experiments

Nuclear Instruments and Methods, 1973
Abstract Nuclear magnetic resonance (NMR) experiments require well defined pulse sequences. The appropriate use of a few identical standard units in connection with a control unit permits the solution of a very large number of physical problems. Each pulse sequence is produced in a separate plug-in unit driven by a general trigger. The modular method
A. Sajeva, L. Stanchi
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Fourier transform nuclear magnetic resonance I. Repetitive pulses

Journal of Magnetic Resonance (1969), 1972
Abstract The steady state solution for the magnetization of a nuclear spin subjected to a repetitive sequence of rf pulses is presented. The only assumptions made are that the Bloch equations are valid, the rf pulses are so short that relaxation can be neglected for the duration of a pulse, and the observed free induction decays are always ...
Daniel E Jones, Himan Sternlicht
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Multiple-Pulse Nuclear Magnetic Resonance Transients in Solids

Physical Review, 1965
The response of a spin system is calculated when a pair of 90\ifmmode^\circ\else\textdegree\fi{} rf pulses is applied to a set of static identical interacting nuclei, initially polarized in an external static magnetic field. For pulse spacings the order of the spin-spin relaxation time, a "solid echo" is predicted.
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