Two-dimensional spatial imaging of charge transport in germanium crystals at cryogenic temperatures
Abstract/Contents
- Abstract
- In this dissertation, I describe a novel apparatus for studying the transport of charge in semiconductors at cryogenic temperatures. The motivation to conduct this experiment originated from an asymmetry observed between the behavior of electrons and holes in the germanium detector crystals used by the Cryogenic Dark Matter Search (CDMS). This asymmetry is a consequence of the anisotropic propagation of electrons in germanium at cryogenic temperatures. To better model our detectors, we incorporated this effect into our Monte Carlo simulations of charge transport. The purpose of the experiment described in this dissertation is to test those models in detail. Our measurements have allowed us to discover a shortcoming in our most recent Monte Carlo simulations of electrons in germanium. This discovery would not have been possible without the measurement of the full, two-dimensional charge distribution, which our experimental apparatus has allowed for the first time at cryogenic temperatures.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2016 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Moffatt, Robert A |
|---|---|
| Associated with | Stanford University, Department of Physics. |
| Primary advisor | Cabrera, Blas |
| Thesis advisor | Cabrera, Blas |
| Thesis advisor | Graham, Peter (Peter Wickelgren) |
| Thesis advisor | Irwin, Kent |
| Advisor | Graham, Peter (Peter Wickelgren) |
| Advisor | Irwin, Kent |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Robert A. Moffatt. |
|---|---|
| Note | Submitted to the Department of Physics. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2016. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2016 by Robert Alexander Moffatt
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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