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| Content Provider | Springer Nature Link |
|---|---|
| Author | Shankar, S. Sabouret, G. Lyon, S. A. |
| Copyright Year | 2010 |
| Abstract | Electrons on the surface of liquid helium are a widely studied system that may also provide a promising method to implement a quantum computer. One experimental challenge in these studies is to generate electrons on the helium surface in a reliable manner without heating the cryo-system. An electron source relying on photoemission from a zinc film has been previously described using a high power continuous light source that heated the low temperature system. This work has been reproduced more compactly by using a low power pulsed lamp that avoids any heating. About 5×10$^{3}$ electrons are collected on 1 cm$^{2}$ of helium surface for every pulse of light. A time-resolved experiment suggests that electrons are either emitted over or tunnel through the 1 eV barrier formed by the thin superfluid helium film on the zinc surface. No evidence of trapping or bubble formation is seen. |
| Starting Page | 410 |
| Ending Page | 416 |
| Page Count | 7 |
| File Format | |
| ISSN | 00222291 |
| Journal | Journal of Low Temperature Physics |
| Volume Number | 161 |
| Issue Number | 3-4 |
| e-ISSN | 15737357 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2010-07-28 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Electron sources Photoemission Zinc Liquid helium Cryogenics Magnetism, Magnetic Materials Characterization and Evaluation of Materials Condensed Matter Physics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Condensed Matter Physics Materials Science |
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