S.J. Wickramarachchi

Dependence of electron transmission on charge deposited in tapered glass macrocapillaries at a tilt angle of 5.0

The characteristics of charge deposited (time) into a tapered glass capillary were studied for an incident energy of ? 1025?eV at a tilt angle of 5?. Electron beams resulting in intensities of 1.5?7000?nC deposited into a tapered borosilicate glass capillary were investigated for inlet/outlet diameters of 800/100??m. The electron transmission consisted of stable transmission, fluctuations, blocking and self-discharging associated with a sudden rise of?transmission as deposited charge was ejected from the capillary. In the case of stable transmission, it was found to be due to both elastic and inelastic contributions, with inelastic transmission dominant.

Transmission and guiding of fast electrons through insulating PET nanocapillaries

Transmission and guiding of electrons traveling through insulating PET nanocapillaries were measured for different sample tilt angles at the energies of 500 and 800 eV. Direct transmission and guiding and the transition between the two regions were observed for angles near zero degrees. Elastic and inelastic spectra and a combination of the two were seen in the different regions.

Broadening in the energy distribution of electron beams transmitted through a micrometer-sized tapered glass capillary

The transmission of electrons through a tapered glass capillary was observed for 1000 eV incident electrons up to tilt angles of ~9.5°. Tilt angle dependence of the energy loss broadening shows clear correspondence of elastic and inelastic processes. Both were found for smaller tilt angles.