The rotational transform and enhanced confinement in the TJ-II stellarator - Van Milligen, Boudewijn; Garcia Cortes, Maria Isabel; Mccarthy, Kieran Joseph; Carreras Verdaguer, Benjamin A.; Garcia Gonzalo, Luis; Cappa, Alvaro; Pons Villalonga, Pedro; Estrada, Teresa; Medina Roque, Daniel; Hernandez Sanchez, Julio; Garcia, Raul; Kozachok, Oleksander S.; et al. (JOURNAL OF PLASMA PHYSICS, 2025)