We have adopted the newly developed technique of growing cationic clusters in size-to-charge selected helium nanodroplets (HNDs), with subsequent removal of helium in a collision cell, to record high-resolution mass spectra of Ne_n⁺. Growth in singly charged HNDs leads to mass spectra that feature the same anomalies in the cluster ion abundance as in previous work, namely maxima at n = 14, 21, 55/56, 75. Several other, weaker but statistically significant anomalies are observed at n = 9, 26, 29, 33, 35, 69, 82, 89. However, when neon clusters are grown in larger HNDs, which are likely to be multiply charged, we observe a different set of magic numbers, at n = 7, 13, 19, 26, 29, 34, 55, 71, 81, plus many other numbers for larger clusters, up to n = 197. A transition from the first to the second set is observed in a limited size range if the collision pressure is increased. The most likely reason for the existence of two different sets of magic numbers appears to be the existence of two distinct structural families.

我们采用了新开发的技术，该技术可在选择电荷的氦纳米液滴（HND）中生长阳离子簇，随后在碰撞池中去除氦，以记录Ne _n ⁺的高分辨率质谱。单电荷HND的生长会导致质谱图，该质谱图的簇离子丰度与以前的工作相同，即在n  = 14、21、55 / 56、75处存在最大值。在以下位置观察到其他一些较弱但具有统计意义的异常n  = 9、26、29、33、35、69、82、89。但是，当霓虹灯簇在较大的HND中生长时，它们很可能被多重充电，因此在n处观察到一组不同的幻数 = 7、13、19、26、29、34、55、71、81，以及许多其他较大聚类的数字，最大为n  =197。如果大小有限，则观察到从第一组到第二组的过渡碰撞压力增加。存在两组不同的幻数的最可能原因似乎是存在两个不同的结构族。