caa a22 4500 605545510 CHVBK 20210128100936.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s00723-015-0678-z doi (NATIONALLICENCE)springer-10.1007/s00723-015-0678-z Effects of Instrumental Artifacts on Double-Quantum-Filtered NMR Buildup Curves for Spin $$I=1$$ I [Elektronische Daten] 1 [Cheng Sun, Xuefeng Wang, Zhixiao Wang] We report on the effects of several commonly encountered instrumental artifacts on the buildup curves from a double-quantum-filtered nuclear magnetic resonance (NMR) pulse sequence for spin $$I=1$$ I = 1 nuclei. In this work, the artifacts of finite pulse widths, radio frequency field inhomogeneity and pulse transients are studied. The buildup curves are calculated by numerically simulating the evolution of the spin density matrix under the Hamiltonian designed for the artifacts, and are then fit to a bi-exponential equation. The results indicate a clear deviation of the bi-exponential time constants characterizing the buildup curves under certain artifacts, compared with the situation where no artifacts are present. This work shows that the presence of instrumental artifacts may cause a misunderstanding of the buildup curves in experiments, and in turn, the chemical environments that the nuclei experience. We suggest that one optimizes the instruments on certain artifacts before performing the double-quantum-filtered NMR experiments. Springer-Verlag Wien, 2015 Sun Cheng College of Physical Science and Technology, Dalian University, Dalian, China aut Wang Xuefeng College of Environmental and Chemical Engineering, Dalian University, Dalian, China aut Wang Zhixiao College of Physical Science and Technology, Dalian University, Dalian, China aut Applied Magnetic Resonance Springer Vienna 46/7(2015-07-01), 809-821 0937-9347 46:7<809 2015 46 723 https://doi.org/10.1007/s00723-015-0678-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00723-015-0678-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sun Cheng College of Physical Science and Technology, Dalian University, Dalian, China aut NATIONALLICENCE 700 1- Wang Xuefeng College of Environmental and Chemical Engineering, Dalian University, Dalian, China aut NATIONALLICENCE 700 1- Wang Zhixiao College of Physical Science and Technology, Dalian University, Dalian, China aut NATIONALLICENCE 773 0- Applied Magnetic Resonance Springer Vienna 46/7(2015-07-01), 809-821 0937-9347 46:7<809 2015 46 723