本文给出有限β值极小势能反场箍缩(RFP)位形。Suydam条件和充分稳定判据也都检验了这个位形。数值结果指出,当β增加时,反场出现临界值增加,并且弛豫状态的螺旋态临界值也随着增加。Suydam和Robinson判据的稳定阈都随着β增加而扩大。β≠0的REP位形理论与当代反场实验结果一致。 In this paper, we present a finite β value of the minimum potential anti-field pinch (RFP) configuration. Suydam conditions and sufficient stability criteria also test the shape. Numerical results show that when β increases, the critical value increases in the reverse field, and the critical value of the spiral state increases with relaxation. The stability thresholds for Suydam and Robinson’s criteria both increase as β increases. The REP position theory with β ≠ 0 is consistent with the contemporary back-field experimental results.