1) multi-dark resonances
多重暗态共振
1.
In this thesis, we mainly discuss multiple electromagnetically induced one-photon transparency and double electromagnetically induced two-photon transparency in a five-level inverted-tripod scheme atomic system, and the multi-dark resonances induced by the coherent perturbations as well as the effects of the linewidth of the coupling field on the multi-dark resonances.
本论文的工作主要分为两部分:一部分是五能级倒三脚架型原子系统中的单光子多重电磁诱导透明和双光子双重电磁诱导透明;另一部分是六能级原子系统中微扰相干场诱导的多重暗态共振和耦合光线宽对多重暗态共振的影响。
2) double dark resonance
双暗态共振
1.
The generation of double dark resonance and double electromagnatically induced transparency in this energy level system is obtained, its physical mechanism is discussed.
采用密度矩阵方程 ,对双光场耦合的分子Y型四能级系统的粒子数分布和吸收特性进行了计算和分析 ,在此能级系统中得到了双暗态共振和双电磁感应透明 ,并讨论了相应的物理机制。
3) multiple resonance
多重共振
4) baryon resonance
重子共振态
1.
We test the Gerasimov-Drell-Hearn (GDH) sum rule numerically by calculating the total photon absorption cross sections σ1/2 and σ3/2 on the nucleon via photon excitation of baryon resonances in the constituent quark model.
在组分夸克模型中重子共振态的光子激发下,通过数值计算核子上光子总吸收截面σ1/2和σ3/2,检验了Gerasimov-Drell-Heam(GDH)求和规则。
5) resonance baryon
共振态重子
6) resonance particle
共振态粒子重建
1.
The hit information of tracks that closest to the origin locates at the Main Drift Chamber(MDC) of BESⅢ,thus the decay vertices of resonance particles cannot be detected directly.
本论文针对上述问题,围绕BESⅢ上的顶点和共振态粒子重建展开以下研究工作:(1)相对长寿命共振态粒子K_s~0,∧/(?)和Ξ重建研究共振态粒子K_s~0和∧/(?)是BESⅢ上大量产生的次级衰变粒子,它们的重建关键是衰变顶点的重建和粒子在衰变之前飞行过程中的运动学拟合。
补充资料:共振态
共振态 resonance 通过强相互作用衰变的粒子。原来把它们看成是一些粒子的共振态,这些共振态的平均寿命为10-24~10-20秒;后来弄清楚寿命如此之短是强作用衰变的特征,因此它们和强子属于同一层次,是通过强作用衰变的不稳定的强子。它可分为重子共振态和介子共振态两类。这种不稳定强子的数量相当多,还处在不断的发现中,数量超过700种。 |
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条