Sensitivity of a superconducting nanowire detector for single ions at low energy
| Autor: | G. Goltsmann, A. V. Semenov, Michele Sclafani, Alexander Korneev, Markus Arndt, Markus Marksteiner, Alexander Divochiy, F. McLennar Keir |
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| Rok vydání: | 2012 |
| Předmět: |
Physics - Instrumentation and Detectors
Materials science Nanowire FOS: Physical sciences Bioengineering 02 engineering and technology Kinetic energy 01 natural sciences Molecular physics Ion 0103 physical sciences Molecule General Materials Science Electrical and Electronic Engineering 010306 general physics Spectroscopy Ions Nanowires Spectrum Analysis Mechanical Engineering Detector Electric Conductivity Noble gas Equipment Design Instrumentation and Detectors (physics.ins-det) General Chemistry 021001 nanoscience & nanotechnology 3. Good health Kinetics Mechanics of Materials Particle 0210 nano-technology |
| Zdroj: | Nanotechnology. 23:065501 |
| ISSN: | 1361-6528 0957-4484 |
| Popis: | We report on the characterization of a superconducting nanowire detector for ions at low kinetic energies. We measure the absolute single particle detection efficiency $\eta$ and trace its increase with energy up to $\eta = 100$ %. We discuss the influence of noble gas adsorbates on the cryogenic surface and analyze their relevance for the detection of slow massive particles. We apply a recent model for the hot spot formation to the incidence of atomic ions at energies between 0.2-1 keV. We suggest how the differences observed for photons and atoms or molecules can be related to the surface condition of the detector and we propose that the restoration of proper surface conditions may open a new avenue to SSPD-based optical spectroscopy on molecules and nanoparticles. Comment: 5 pages, 4 figures |
| Databáze: | OpenAIRE |
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