Associative ionization of laser-excited Rydberg states in strontium vapor.
Associative ionization of laser-excited Rydberg states in strontium vapor.
复制标题
锶蒸气中激光激发里德伯态的缔合电离。
作者：
E. Worden;J. Paisner;J. Conway
利用质谱技术，我们证实了Sr（2）（+）离子是通过Sr（5snl）+ Sr（5s（2））？Sr（2）（+）+ e（-）。在5s 6d（3）D（2）能级检测到二聚体离子信号，表明Sr（2）（+）的结合能超过0.77 eV。我们已经观察到，在一定条件下，里德伯态被电子碰撞电离破坏之前，缔合电离碰撞可以发生。
Using mass spectrometry we have confirmed that Sr(2)(+) ions are produced from laser-populated Rydberg states by the associative ionization process Sr(5snl) + Sr(5s(2)) ? Sr(2)(+) + e(-). Dimer ion signal was detected for the 5s6d(3)D(2) level, indicating that the binding energy of Sr(2)(+) exceeds 0.77 eV. We have observed that under certain conditions the Rydberg states are destroyed by electron-impact ionization before an associative ionization collision can occur.