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- W2332171567 abstract "The sensitivity (limit of detection) of high-resolution Rutherford backscattering spectroscopy (HRBS) is mainly determined by the background noise of the spectrometer. There are two major origins of the background noise in HRBS, one is the stray ions scattered from the inner wall of the vacuum chamber of the spectrometer and the other is the dark noise of the micro channel plate (MCP) detector which is commonly used as a focal plane detector of the spectrometer in HRBS. In order to reject the stray ions, several barriers are installed inside the spectrometer and a thin mylar foil is mounted in front of the detector. The dark noise of the MCP detector is rejected by the coincidence measurement with the secondary electrons emitted from the mylar foil upon the ion passage. After these improvements, the background noise is reduced by a factor of 200. The detection limit is improved down to 10 ppm for As in Si." @default.
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- W2332171567 date "2013-01-01" @default.
- W2332171567 modified "2023-09-26" @default.
- W2332171567 title "Improvement of Sensitivity in High-resolution Rutherford Backscattering Spectroscopy" @default.
- W2332171567 doi "https://doi.org/10.3131/jvsj2.56.355" @default.
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