A short-wavelength radiation is generated which is stable over time from a plasma generated by energy input into a target jet, in which intensity variations due to altered coupling of excitation radiation into the target jet are minimized. The compounds are useful for promoting hydration of mucosal surfaces. This security token comprises a randomly generated data value. Additionally, each first microlens and second microlens is a flat convex lens. Also disclosed is a reversible needle cap which operates initially to cap the front end of the housing and, upon removal thereof, pulls a needle sheath off the syringe needle. The current interrupt device has an upper conductive plate electrically connected with the end cap, a lower conductive plate electrically connected with the rupture plate, and a fuse electrically connecting the upper conductive plate and the lower conductive plate.