Size and temporal dependence of the average kinetic-energy release during the evaporation of sputtered Cs(CsI<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msubsup><mrow><mo>)</mo></mrow><mrow><mi mathvariant="normal">n</mi></mrow><mrow><mo>+</mo></mrow></msubsup></mrow></math></span> clusters

Hyun Jin Hwang; Dilip K. Sensharma; Mostafa A. El-Sayed

doi:10.1103/PhysRevLett.64.808

Size and temporal dependence of the average kinetic-energy release during the evaporation of sputtered Cs(CsI $)_{n}^{+}$ clusters

Hyun Jin Hwang, Dilip K. Sensharma, and Mostafa A. El-Sayed

Phys. Rev. Lett. 64, 808 – Published 12 February 1990

Abstract

The average kinetic-energy release is measured for the evaporation of CsI and (CsI $)_{2}$ molecules from sputtered Cs(CsI $)_{n}^{+}$ clusters (n=2–17) in two different time windows. Size and temporal (temperature) dependence of the average kinetic-energy release (KER) is found to be in reasonable agreement with the predictions of the evaporative ensemble model, except for evaporation processes involving the cluster with magic number n=13. Agreement can be obtained for the latter if the assumption of the independence of the heat of evaporation on the cluster size in the model is removed.