Multiply charged neon clusters: failure of the liquid drop model?
We have analyzed the stability and fission dynamics of multiply charged neon cluster ions. The critical sizes for the observation of long-lived ions are n 2 = 284 and n 3 = 656 for charge states 2 and 3, respectively, a factor 3 to 4 below the predictions of a previously successful liquid-drop model. The preferred fragment ions of fission reactions are surprisingly small ( 2 ≤ n ≤ 5 ); their kinetic energy distributions peak at 200 meV or below. The size of these fragments and their average kinetic energies are much less than predicted by the liquid-drop model.
Physical Reviw Letters
Digital Object Identifier (DOI)
I. Mähr, F. Zappa, S. Denifl, D. Kubala, O. Echt, T. D. Märk, P. Scheier, Multiply charged neon clusters: failure of the liquid drop model?, Phys. Rev. Lett. 98 (2007) 023401, DOI: 10.1103/PhysRevLett.98.023401.