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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
