𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Composite pulse excitation for spin-1 pure nuclear quadrupole resonance spectroscopy in powders

✍ Scribed by Geng-Ying Li; Yu Jiang; Xue-Wen Wu


Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
415 KB
Volume
202
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

✦ Synopsis


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 and ( )o(54),7,( ),( )9~( )ls~( )~( )o(54)~, is much better with respect to the compensating rftield inhomogeneity than that of conventional single pulses.


πŸ“œ SIMILAR VOLUMES


Broadband excitation composite pulses fo
✍ Geng-Ying Li; Liang Xu; Xue-Wen Wu πŸ“‚ Article πŸ“… 1993 πŸ› John Wiley and Sons 🌐 English βš– 275 KB

## 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 calcula

Measurement of Spin–Lattice Relaxation T
✍ Richard G.S Spencer; Kenneth W Fishbein πŸ“‚ Article πŸ“… 2000 πŸ› Elsevier Science 🌐 English βš– 187 KB

A fundamental problem in Fourier transform NMR spectroscopy is the calculation of observed resonance amplitudes for a repetitively pulsed sample, as first analyzed by Ernst and Anderson in 1966. Applications include determination of spin-lattice relaxation times (T 1 's) by progressive saturation an