title: Effects of instrumental artifacts on triple quantum filtered NMR spectra for spin I=3/2.
abstract: In this work, the effects of various instrumental artifacts on the triple quantum filtered NMR spectra for spin I=3/2 nuclei are investigated. The studied artifacts include finite pulse widths, phase errors, radio frequency field inhomogeneity and pulse transients, which are commonly encountered in practice. The triple quantum filtered spectra are numerically simulated, based on the evolution of the spin density operator under the Hamiltonian for the artifacts. The results show that the presence of the artifacts introduces a shape distortion in the spectrum as well as a variation in the peak intensity, compared with the spectrum without any artifacts. This work indicates that the existence of the instrumental artifacts may cause a misunderstanding of the triple quantum filtered NMR spectra in experiments. The results suggest that one be aware of the instrumental artifacts when performing the triple quantum filtered NMR experiments.
authors.affiliation: College of Physical Science and Technology, Dalian University, China. Electronic address: suncheng@dlu.edu.cn.
authors.forename: Cheng
authors.initials: C
authors.lastname: Sun
authors.affiliation: College of Environmental and Chemical Engineering, Dalian University, China.
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Wang
authors.affiliation: College of Physical Science and Technology, Dalian University, China.
authors.forename: Zhixiao
authors.initials: Z
authors.lastname: Wang
mesh_terms: D016477:Artifacts; D004867:Equipment Design; D019544:Equipment Failure Analysis; D009682:Magnetic Resonance Spectroscopy / Q000295:instrumentation* / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013113:Spin Labels
chemical_list: D013113:Spin Labels
keywords: Finite pulse widths; Phase errors; Pulse transients; Radio frequency field inhomogeneity; Triple quantum filtered NMR