Two-dimensional hyperfine sublevel correlation spectroscopy: Powder features for SÂ =Â 1/2, IÂ =Â 1
Keywords: تعامل Hyperfine; ESE EM; HYSCORE; 2D spectroscopy; Catastrophe theory; Nitrogen nucleus; Hyperfine interaction; Singularity patterns; Mapping; Quadrupolar interaction; Fold; Cusp;