Abstract
The timing properties of a high purity Ge coaxial detector are studied and compared with those of a Li-drifted detector of similar size. The 1/ r field distribution in a Li-drifted device is modified by fixed space charge in the high purity Ge coaxial detector and this results in a higher and more uniform field distribution in a large portion of the detector volume. The effect is felt particularly in an improved hole collection due to their velocity not being saturated at the 100–500 V/mm fields. It is found that hole mobility obtainable in such fields is reduced by a factor of approximately 8 from the value normally specified at low fields. An immediate advantage of high purity Ge coaxial detectors is found, therefore, in a smaller spread in their charge collection times from which an improved time resolution and smaller energy dependent time walk results, particularly at low energies.
Sign-in/Register to access full text options 
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.
