Guiding of 150 keV O6＋ ions through nanocapillaries in an uncoated Al2O3 membrane： special time dependence of the transmission profile width

<正>This paper reports that the transmission of O⁶⁺ ions with energy of 150keV through capillaries in an uncoated Al₂O₃ membrane was measured,and agreements with previously reported results in general angular distribution of the transmitted ions and the transmission fractions as a function of the tilt angle well fitted to Gaussian-like functions were observed.Due to using an uncoated capillary membrane,ourψ_c is larger than that using a gold-coated one with a smaller value of（?）,which suggests a larger equilibrium charge Q_∞in our experiment.The observed special width variation with time and a larger width than that using a smaller（?） were qualitatively explained by using mean-field classical transport theory based on a classical-trajectory Monte Carlo simulation.

Guiding of 150keV O6+ ions throughnanocapillaries in an uncoated Al2O3 membrane:specialtime dependence of the transmission profile width

This paper reports that the transmission of O$^{6 + }$ ions with energy of 150keV through capillaries in an uncoated Al$_{2}$O$_{3}$ membrane was measured, and agreements with previously reported results in general angular distribution of the transmitted ions and the transmission fractions as a function of the tilt angle well fitted to Gaussian-like functions were observed. Due to using an uncoated capillary membrane, our $\psi _{\rm c} $ is larger than that using a gold-coated one with a smaller value of $\ddfrac{E_{\rm p}}{q}$, which suggests a larger equilibrium charge $Q_\infty $ in our experiment. The observed special width variation with time and a larger width than that using a smaller $\ddfrac{E_{\rm p} }{q}$ were qualitatively explained by using mean-field classical transport theory based on a classical-trajectory Monte Carlo simulation.