Erratum: Electron Bombardment Molecular Beam Detector

Measurement of Ion a N D Electron Densities of Electron-bombardment Ion-thrustor Beam

Small field electron beam dosimetry using MOSFET detector

The dosimetry of very small electron fields can be challenging due to relative shifts in percent depth-dose curves, including the location of dmax, and lack of lateral electronic equilibrium in an ion chamber when placed in the beam. Conventionally a small parallel plate chamber or film is utilized to perform small field electron beam dosimetry. Since modern radiotherapy departments are becomin...

Electron Bombardment of Biological Materials

A study has been undertaken of the rate of inactivation of spores of the ascomycete fungus Aspergillus niger when bombarded in vacuum, with homogeneous beams of cathode rays of energies from 4 to 15 electron kv. and current densities of 1 x 10(-7) to 3 x 10(-6) amperes per square cm. These velocities and densities are in the range of those of showers of secondary electrons produced in biologica...

Electron Emission from Inconel under Ion Bombardment

Electron yields from clean and oxydized Inconel 625 surfaces have been measured for H', H:, Hef, 0' and Ar+ ions at normal incidence in the energy range 1.5-40 keV. These measurements have been made under ultrahigh vacuum and the samples were freed of surface contaminants by bombarding with high doses of either 20 keV H l or 30 keV Ar+ ions. Differences in yields of oxydized versus clean surfac...

High molecular weight polystyrene as very sensitive electron beam resist

0167-9317/$ see front matter 2012 Elsevier B.V. A http://dx.doi.org/10.1016/j.mee.2012.07.005 ⇑ Corresponding author. Tel.: +1 519 729 3582. E-mail addresses: [email protected], j24 (J. Zhang). Previously we demonstrated ultra-dense patterning using 2 kg/mol polystyrene negative electron beam resist that has low sensitivity [16]. To drastically improve its sensitivity, here we studied the expos...