Estimates for 2D distributions of electron density, n_e, and temperature, T_e, have been obtained using reflection-corrected tomographic reconstructions of deuterium Balmer line emission in the JET divertor. The solutions are obtained by a two-dimensional Monte Carlo optimization model, based on intensity ratios of the Balmer D_α, D_γ and D_ε emission and the ADAS photon emission coefficients with additional constraints provided by line-integrated spectroscopic measurements of n_e and T_e. Synthetic benchmarks utilizing EDGE2D-EIRENE simulation outputs yield reproduction of reference n_e and T_e distributions within 25% with statistical error estimates of 5–15%. Experimental analysis of an L-mode n_e ramp shows extension and movement of the outer divertor high-n_e region with n_e,div up to 1.5 × 10²⁰ m⁻³ from the outer strike point to above the X-point and decrease of the divertor T_e to the range of 0.5–1.0 eV within 25% agreement with the line-integrated measurements. Comparison between the local estimates and their corresponding line integrals suggests underestimation of n_e and T_e by up to 75% and 50%, respectively, due to the geometric effects of line integration.

对电子密度N的二维分布估计_ë，和温度，T _ê，已使用氘巴尔末线发射的反射校正断层重建在JET偏滤器获得。该解决方案由二维蒙特卡洛优化模型获得的基础上，巴尔末d的强度比_α，d _γ和d _ε发射和ADAS光子发射与由n个线积分光谱测量提供额外的约束系数_È和Ť _ê。利用EDGE2D-EIRENE模拟输出的综合基准可以重现参考值n _e和T _e分布在25％以内，统计误差估计为5-15％。对L模n _e斜坡的实验分析表明，外偏滤器高n _e区域的延伸和运动n _e，div从外部触击点到X点以上直至1.5×10 ²⁰ m ^-3，并减小分压器T _e的值在0.5–1.0 eV范围内，与线路积分测量值相差25％。局部估计值及其对应的线积分之间的比较表明，由于线积分的几何效应，n _e和T _e分别低估了75％和50％。