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理论上通过从头算法计算与理论分析证明存在D2h群对称性的[N2]2即N2分子二聚物,且存在电偶极允许的类准分子跃迁a1B2g→a1B3u. 理论计算获得的a1B2g→a1B3u跃迁的发射谱与实验观测到的结果很好地吻合. 利用微波激励高纯氮和放大自发辐射法研究了N2分子二聚物的受激辐射特性,实验研究结果表明,当微波功率大于100 W,充入N2气压在260~2200 Pa范围内N2分子二聚物在336.21 nm处存在受激辐射特性. 相似文献
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1 Introduction Forveryhighdatarates,intersatelliteopticalcommunications (IOC)holdapotentialperformanceedgeovermicrowave (RF )communicationsintermsofhigherdatarates,smallerantennasandlow probabilityofjammingandintercept[1] .WiththewidedevelopmentofIOCtechnol… 相似文献
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It has been proved by ab initio calculation and theoretical analysis that there exist [N2]2--N2 molecular dimers with D2h symmetry group, and there also exists an electric dipole excimer-like transition a1B2g→a1B3u. The theoretical spectra accord with the experimental results for transition a1B2g→a1B3u. The stimulated emission characteristic of N2 molecular dimer was researched through the microwave excited highly pure nitrogen and the method of amplified spontaneous emission. The experimental results show that N2 molecular dimer has stimulated emission characteristics when the microwave power is more than 100 W and the N2 pressure is in the range from 260 Pa to 2200 Pa. 相似文献
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几种全氟烷基碘化物分子振动光谱的理论研究 总被引:3,自引:0,他引:3
采用分子轨道从头算方法,分别在HF、MP2和B3LYP水平下对三种全氟烷基碘化物分子CF3I、C2F5I和n-C3F7I的振动红外光谱和喇曼光谱进行理论计算,给出了各频率所对应的振动模式对称性、红外谱线相对强度及喇曼活性。结合计算值和实验值对三种全氟烷基碘化物分子的振动光谱进行了讨论,结果表明理论计算值与实验观测值吻合得很好。 相似文献
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UR90环形非稳腔输出模式特性的数值分析 总被引:1,自引:1,他引:0
将UR90环形非稳腔引入氧碘化学激光器,对其输出模式进行了数值模拟计算,模拟包括了化学动力学,介质横向流动和物理光学等因素,得到与放大率M和光轴离截取镜距离a等参数相关的近场光强,位相及远场光强分布曲线。 相似文献