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Broadband excitation composite pulses for pure NQR spectroscopy in powders

โœ Scribed by Geng-Ying Li; Liang Xu; Xue-Wen Wu

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
275 KB
Volume
31
Category
Article
ISSN
0749-1581

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โœฆ Synopsis

Abstract

Composite pulses that compensate for resonance offset and electric field gradient inhomogeneity are proposed for broadband excitation of pure nuclear quadrupole resonance systems in powders. The excitation band width of the composite pulse sequences was obtained with a numerical calculation procedure and confirmed by ^35^Cl experimental spectra of powdered NaClO~3~.

๐Ÿ“œ SIMILAR VOLUMES

Composite pulse sequences for pure NQR i
Composite pulse sequences for pure NQR in powders
โœ Geng-Ying Li; Xue-Wen Wu ๐Ÿ“‚ Article ๐Ÿ“… 1993 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 302 KB

Composite pulses that compensate resonance offset and radi\*frequency field inhomogeneity are proposed for broadband excitation of pure nuclear quadrupole resonance spin systems in powders. The excitation properties of the composite pulse se.quences are studied with the aid of numerical calculation,

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Composite pulses designed to compensate the inhomogeneity of the radio-frequency field using numerical calculation procedures in spin-l NQR in powders are presented. It is demonstrated by computer simulation and experimental result that the perforrnanceofthe proposed composite pulses, ( ),( 1gO)90 a

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โœ Christophe Odin ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 175 KB

This work presents a numerical approach to optimizing sequences with composite pulses for the pure NQR of a spin I = 32 powder sample. The calculations are based on a formalism developed in a previous paper, which allows a fast powder-averaging procedure to be implemented. The framework of the Cayle