Abstract
A calculation technique is presented which relates electron-beam power and the physical properties of a target to the size and temperature of the irradiated spot. The technique permits the selection of target materials which are suitable for use in electron-beam-addressed mass-storage systems. The electron-beam-induced heating within the target is determined by assuming that the beam energy is uniformly deposited within a hemispherical volume of radius rE. This effective radius is determined from Monte Carlo simulation of the beam-target interaction. The thermal calculations can be used to identify the required properties of suitable targets. The steady-state temperature must exceed the boiling temperature of the target material. This requirement places an upper limit on the thermal conductivity of the material. A relationship among thermal conductivity, heat capacity, and mass density is similarly obtained by requiring that the heating is to be done in an acceptably short time. A set of normalized curves is presented which shows the spatial and temporal behavior of the temperature in the target. The denormalization parameters for several materials and beam powers are presented for use with the curves.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
