Mean carrier transport properties and charge collection dynamics of single-crystal, natural type IIa diamonds from ion-induced conductivity measurements | Posted on:1994-03-15 | Degree:Ph.D | Type:Dissertation | University:University of California, Berkeley | Candidate:Han, Sung Su | Full Text:PDF | GTID:1471390014494675 | Subject:Nuclear engineering | Abstract/Summary: | | Ion-induced conductivity has been used to investigate the detector characteristics of diamond detectors. Both integrated-charge, and time-resolved current measurements were performed to examine the mean carrier transport properties of diamond and the dynamics of charge collection under highly-localized and high-density excitation conditions. The integrated-charge measurements were conducted with a standard pulse-counting system with ;A charge collection model was developed to interpret the integrated-charge measurements which enabled estimation of the energy required to produce an electron-hole pair (;The best fractional resolution resulting from any of the diamond detectors at the highest field (;The rise times of the current transients in the time-resolved current experiments were measured to be greater by about an order of magnitude as compared to the 18.6 ;We have developed a temporally- and spatially-dependent one-dimensional carrier transport model to interpret the time-resolved current measurements and to examine the dynamics of charge collection under the intense localized excitations that are represented by heavy ion-excitations. (Abstract shortened by UMI.). | Keywords/Search Tags: | Charge collection, Measurements, Carrier transport, Dynamics, Diamond, Time-resolved current | | Related items |
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