Stray charged particle removal device
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United States of America Patent
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May 18, 2010
Issued Date -
N/A
app pub date -
May 5, 2006
filing date -
May 5, 2006
priority date (Note) -
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Abstract
to stray charged particles, an off-axis structure is interposed between the resonant structure and the detector surface of the photo-multiplier. By providing the off-axis structure with at least one reflective surface, photons are reflected toward the detector surface of the photo-multiplier while at the same time absorbing stray charged particles. Stray particles may be absorbed by the reflective surface or by any other part of the off-axis structure. The off-axis structure may additionally be provided with an electrical bias and/or an absorbing coating for absorbing stray charged particles.
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