大连轻轨新建线固定闭塞信号系统升级

随着城市化发展进程的加剧,各大城市交通拥堵的趋势迅速膨胀,发展城市公共交通已是近年来国家研究的重大课题.现网规划在满足城市发展、节能环保、交通疏解的前提下,能地面不高架、能高架不地下、能远期上的不近期上.特别是二、三线城市能用轻轨的不用地铁,构建多层次、多制式的轨道交通线网,合理确定地铁、轻轨、现代有轨电车的构成比例.     

HOD分子在?1B1态的光解动力学： 产物OH/OD的分支比以及OD键解离能

利用H(D)原子里德堡态时间飞渡谱技术研究了HOD超声射流分子束在124 nm附近的?态光解动力学．实验测量了HOD分子在?态的转动分辨的吸收谱,并得到了五个转动峰下H+OD以及D+OH通道的产物总的平动能谱．通过对产物平动能谱的分析,得到了?态解离产物OH和OD的分支比,并与Β态和?态相应解离产物的分支比做了对比．实验结果确定了HOD分子OD键的解离能为41751.3±5 cm^-1.     

HOD分子在(~C)1B1态的光解动力学:产物OH/OD的分支比以及OD键解离能

Photodissociation of jet-cooled HOD via the ? state around 124 nm has been studied using the H(D)-atom Rydberg tagging time-of-flight technique. Rotational state resolved action spectrum and the product translational energy distribution spectra have been recorded for both D+OH and H+OD dissociation channels. Product channel OH/OD branching ratios for the individual ?- X rotational transition have been determined. A comparison is also given with the B- X and ?- X transitions. In addition, the dissociation energy of the OD bond in HOD has been determined accurately to be 41751.3±5 cm^-1.