The lamp unit consists of 1 or more inert gas lamps arranged to illuminate the desired treatment area. A high voltage cable connects the lamps to the power unit. To flash the lamp, a high-voltage, high-current pulse of electricity is applied. The high current passing through the gas in the lamp causes it to emit an intense pulse of light that lasts a few hundred microseconds. The frequency of flashing is adjustable, allowing optimization of the process in conjunction with any particular processing speed. Systems are normally designed for each application to provide flexibility in the number of lamps, the flashing configuration, and the flash rate. Lamps can be flashed simultaneously or sequentially.
A different system using pulsed UV light for microbial control has been patented in the United States (Lagunas-Solar and Pyne 1994), with patent pending in Chile. This technology uses monochromatic excimer lamps at a wavelength of 247 nm rather than the xenon flash tubes described above. This technology is in commercial production in Chile and is being used on grapes exported to the United States.
The lamp unit consists of 1 or more inert gas lamps arranged to illuminate the desired treatment area. A high voltage cable connects the lamps to the power unit. To flash the lamp, a high-voltage, high-current pulse of electricity is applied. The high current passing through the gas in the lamp causes it to emit an intense pulse of light that lasts a few hundred microseconds. The frequency of flashing is adjustable, allowing optimization of the process in conjunction with any particular processing speed. Systems are normally designed for each application to provide flexibility in the number of lamps, the flashing configuration, and the flash rate. Lamps can be flashed simultaneously or sequentially.A different system using pulsed UV light for microbial control has been patented in the United States (Lagunas-Solar and Pyne 1994), with patent pending in Chile. This technology uses monochromatic excimer lamps at a wavelength of 247 nm rather than the xenon flash tubes described above. This technology is in commercial production in Chile and is being used on grapes exported to the United States.
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