Abstract
A secondary electron emission detector can be used as a high-intensity radiation beam monitor because the absence of ion recombination extends the upper dose range of the monitor. The characteristics of saturation, linearity, sensitivity, reproducibility, and current stability of the monitor were measured with respect to synchrotron radiation from undulators at SPring-8. Thin aluminum-evaporated electrodes were used in a vacuum chamber. Linearity was observed at 1011–1013photons∕s between 10 and 30keV. Even at the highest intensity of 1015photons∕s, current linearity was achieved to some extent. Sensitivity ranged from 27to55pC∕Gy∕cm2, and increased with decreasing energy. During long irradiation, the current decreased gradually with time; the degree became larger with the dose. When irradiation was interrupted, however, the current recovered to its initial value at the next irradiation.
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.
