At the test bench in Ferrara, we constructed an optical spectrometer that measures the relative population of the atomic and molecular hydrogen in the discharge tube of our atomic beam source (ABS). The spectrometer consists of a rotating grating, achromatic lenses, slits, and a sensitive photo-detector connected to a computer. Due to the rotation of the grating, the optical spectrum is scanned over the detector, and the intensities of hydrogen spectral lines are recorded. The intensity ratio of recorded hydrogen atomic lines to hydrogen molecular lines gives qualitative information about the degree of dissociation. With the device’s high sensitivity and spectral resolution, it will be possible to monitor vacuum conditions and gas impurities in the ABS discharge tube.

OPTICAL SPECTROMETER FOR MEASURING THE RATIO OF ATOMIC HYDROGEN AND MOLECULAR HYDROGEN IN AN ABS

BARION, Luca;CIULLO, Giuseppe;CONTALBRIGO, Marco;FERRETTI, Paola;GIORDANO, Francesca;LENISA, Paolo;STANCARI, Michelle Dawn;STATERA, Marco;TOMASSETTI, Luca;
2005

Abstract

At the test bench in Ferrara, we constructed an optical spectrometer that measures the relative population of the atomic and molecular hydrogen in the discharge tube of our atomic beam source (ABS). The spectrometer consists of a rotating grating, achromatic lenses, slits, and a sensitive photo-detector connected to a computer. Due to the rotation of the grating, the optical spectrum is scanned over the detector, and the intensities of hydrogen spectral lines are recorded. The intensity ratio of recorded hydrogen atomic lines to hydrogen molecular lines gives qualitative information about the degree of dissociation. With the device’s high sensitivity and spectral resolution, it will be possible to monitor vacuum conditions and gas impurities in the ABS discharge tube.
2005
9789812563156
9812563156
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1684025
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