在Cs-K混合蒸气中,两步激发Cs原子到8D态,观察了Cs(8D)+K(4S)→Cs(5D)+K(4P)碰撞能量合并逆过程(REP,reverse energy pooling)。应用双调制技术探测K(4P)原子发射的荧光,基态K原子密度用光学吸收方法测量。得到了REP速率系数,讨论了其...在Cs-K混合蒸气中,两步激发Cs原子到8D态,观察了Cs(8D)+K(4S)→Cs(5D)+K(4P)碰撞能量合并逆过程(REP,reverse energy pooling)。应用双调制技术探测K(4P)原子发射的荧光,基态K原子密度用光学吸收方法测量。得到了REP速率系数,讨论了其它过程对速率系数的影响。展开更多
By using the multichannel quantum defect theory （MQDT）, we have evaluated the energy levels and lifetimes of 2sns （）3S1,2snd（）3D（n=3-25） of BeⅠ and 1sns（）3S1,1snd （）3D（n=3-25） of BeⅢ. These energies an...By using the multichannel quantum defect theory （MQDT）, we have evaluated the energy levels and lifetimes of 2sns （）3S1,2snd（）3D（n=3-25） of BeⅠ and 1sns（）3S1,1snd （）3D（n=3-25） of BeⅢ. These energies and lifetimes that we have calculated not only agree with the recent measurements and theoretical calculation of Ref.4 and Ref.3, but also predict the lifetimes of 66 other highly excited states.展开更多
文摘在Cs-K混合蒸气中,两步激发Cs原子到8D态,观察了Cs(8D)+K(4S)→Cs(5D)+K(4P)碰撞能量合并逆过程(REP,reverse energy pooling)。应用双调制技术探测K(4P)原子发射的荧光,基态K原子密度用光学吸收方法测量。得到了REP速率系数,讨论了其它过程对速率系数的影响。
文摘By using the multichannel quantum defect theory （MQDT）, we have evaluated the energy levels and lifetimes of 2sns （）3S1,2snd（）3D（n=3-25） of BeⅠ and 1sns（）3S1,1snd （）3D（n=3-25） of BeⅢ. These energies and lifetimes that we have calculated not only agree with the recent measurements and theoretical calculation of Ref.4 and Ref.3, but also predict the lifetimes of 66 other highly excited states.
