Article irradiation system having intermediate wall of radiation shielding material within loop of conveyor system that transports the articles
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United States of America Patent
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Oct 3, 2000
Grant Date -
N/A
app pub date -
Jun 23, 1998
filing date -
Jun 23, 1998
priority date (Note) -
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Abstract
An article irradiation system includes a radiation source for scanning a target region with radiation; a conveyor system including a process conveyor positioned for transporting articles in a given direction through the target region; radiation shielding material defining a chamber containing the radiation source, the target region and a portion of the conveyor system; wherein the radiation source is disposed along an approximately horizontal axis inside a loop defined by a portion of the conveyor system and is adapted for scanning the articles being transported through the target region with radiation scanned in a plane transverse to the given direction of transport by the process conveyor; and an intermediate wall of radiation shielding material positioned within the loop and transverse to the approximately horizontal axis. The intermediate wall supports a ceiling of the chamber, inhibits photons emitted from a beam stop disposed in a given wall from impinging upon at least one other wall of the chamber and restricts flow throughout the chamber of ozone derived in the target region from the radiation source.
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