Neoclassical theory provides usable expressions for studying transport in toroidal plasmas and computing the associated radial electric field. An algebraic and three semi-analytical models are used here to study the radial electric field in TJ-II plasmas and compare it with experimental data from a heavy ion beam probe (HIBP) and with DKES calculations. Good qualitative agreement as well as reasonable quantitative agreement is found which allows us to validate the models for describing TJ-II radial electric fields. Furthermore, a simple algebraic formulation (2005 Plasma Phys. Rep. 31 14) provides physical insight for the interpretation of experimental data from the TJ-II heliac in spite of its complicated geometry, like the place of the transition from the electron to the ion root of the radial electric field, which occurs at the maximum value of collisionality, for example.
新古典理论为研究环形等离子体中的输运以及计算相关径向电场提供了可用的表达式。本文使用一个代数模型和三个半解析模型来研究TJ-II装置中的径向电场，并将其与重离子束探针（HIBP）的实验数据及DKES计算结果进行比较。结果显示出良好的定性一致性以及合理的定量一致性，从而验证了这些模型描述TJ-II径向电场的有效性。此外，一个简单的代数公式（2005年《等离子体物理报告》第31卷第14页）为解释TJ-II螺旋器实验数据提供了物理见解，尽管其几何结构复杂，例如径向电场从电子根到离子根的转变发生在碰撞率最大值处。