✦ LIBER ✦

Spin echoes in half-integer quadrupole systems

✍ Scribed by Chan, Jerry C. C.

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 277 KB
Volume: 11
Category: Article
ISSN: 1043-7347
DOI: 10.1002/(sici)1099-0534(1999)11:6<363::aid-cmr2>3.0.co;2-a

No coin nor oath required. For personal study only.

✦ Synopsis

The condition for an echo formation is reviewed in the context of half-integer quadrupole system. The common features of the classical echo phenomena and the coherence transfer echo are highlighted. The article also explains how the measurement of a series of coherence transfer echoes achieves the high-resolution feature of the ( ) multiple-quantum magic angle spinning MQMAS experiment.

📜 SIMILAR VOLUMES

Nutation Magic-Angle-Spinning Spectra of

Nutation Magic-Angle-Spinning Spectra of Half-Integer Quadrupole Spin Systems

✍ S.W. Ding; C.A. Mcdowell 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 508 KB

Spin-locking spectral lineshapes of the

Spin-locking spectral lineshapes of the central transition of half-integer quadrupole systems under magic-angle spinning

✍ Shangwu Ding; Charles A. McDowell 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 569 KB

Optimized multiple-quantum magic-angle s

Optimized multiple-quantum magic-angle spinning NMR experiments on half-integer quadrupoles

✍ Jean-Paul Amoureux; Christian Fernandez; Lucio Frydman 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 591 KB

It has been recently shown that second-order anisotropies can be removed from solid phase NMR spectra of quadrupolar nuclei via the combined use of magic-angle spinning (MAS) and bidimensional multiple-quantum (MQ) spectroscopy. The present study investigates the conditions under which the acquisiti

Theoretical Calculations of the CPMAS Sp

Theoretical Calculations of the CPMAS Spectral Lineshapes of Half-Integer Quadrupole Systems

✍ S.W. Ding; C.A. Mcdowell 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 565 KB

Revision of Spin Echoes in Pure Nuclear

Revision of Spin Echoes in Pure Nuclear Quadrupole Resonance

✍ C.A. Meriles 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 105 KB

Goldman's spin-1/2 formalism has been used for describing the response of an I=3/2 spin system to a two-pulse sequence in a pure nuclear quadrupole resonance experiment. A detailed analysis of the polarization evolution and quadrupolar echo generation is carried out through the use of explicit expre

Population and Coherence Transfer Induce

Population and Coherence Transfer Induced by Double Frequency Sweeps in Half-Integer Quadrupolar Spin Systems

✍ Dinu Iuga; Hartmut Schäfer; Rieko Verhagen; Arno P.M Kentgens 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 249 KB

We have recently shown that the sensitivity of single-and multiple-quantum NMR experiments of half-integer (N/2) quadrupolar nuclei can be increased significantly by introducing so-called double frequency sweeps (DFS) in various pulse schemes. These sweeps consist of two sidebands generated by an am