Department of Physics, Baltic State Academy, Molodiozhnaya 6, 236029 Kaliningrad, Russia.
Solid State Nucl Magn Reson. 2012 May-Jun;43-44:32-5. doi: 10.1016/j.ssnmr.2011.12.004. Epub 2012 Jan 5.
The experiment with phase inversion and phase-inverted echo-amplitude detected nutation (PEANUT) was introduced in the nuclear quadrupole resonance (NQR). Formulas were obtained describing the NQR (I=3/2) experiment. Exemplary experiments are provided confirming the predicted particularities of the PEANUT spectra in NQR Cl-35. It is proposed to apply the method for the purpose of determination the asymmetry parameter of the electric field gradient (EFG) tensor in powders with the help of the analysis of PEANUT interferograms. Application of two-dimensional PEANUT experiments, in which the nutation frequencies correlate with the resonance NQR frequencies, can substantially simplify the interpretation of complex spectra.
介绍了核四极共振（NQR）中的相反转和相反转回波幅度检测进动（PEANUT）实验。得到了描述 NQR（I=3/2）实验的公式。提供了示例实验，证实了在 NQR Cl-35 中 PEANUT 光谱的预测特性。提出了应用该方法的目的，即在粉末中通过分析 PEANUT 干涉图来确定电场梯度（EFG）张量的不对称参数。二维 PEANUT 实验的应用，其中进动频率与共振 NQR 频率相关联，可以大大简化复杂光谱的解释。
