AI Article Synopsis
- The versatility of a tandem electrostatic accelerator is enhanced through modifications to its operation, allowing it to produce both MeV and few-keV ion beams.
- The setup enables high-quality ion beam generation in the few-keV range and facilitates simultaneous secondary ion mass spectrometry to study surface modifications without needing a separate chamber.
- An example application involves preparing a sample to investigate ion-beam assisted dewetting of a thin gold film on a silicon substrate.
Article Abstract
We increase the versatility of a tandem electrostatic accelerator by implementing simple modifications to the standard operation procedure. While keeping its ability to deliver MeV ion beams, we show that the experimental setup can (i) provide good quality ion beams in the few-keV energy range and (ii) be used to study ion-beam surface modification with simultaneous secondary ion mass spectrometry. This latter task is accomplished without using any chamber connected to the accelerator exit. We perform mass spectrometry of the few-keV anions produced in the ion source by measuring their neutral counterparts at the accelerator exit with energies up to 1.7 MeV. With an additional modification, a high-current few-keV regime is obtained, using the ion source as an irradiation chamber and the accelerator itself only as a mass spectrometer. As an example of application, we prepare a sample for the study of ion-beam assisted dewetting of a thin Au film on a Si substrate.
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| http://dx.doi.org/10.1063/1.4953889 | DOI Listing |
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