Title :
Enhancing the sensitivity of miniaturized quadrupole mass spectrometers
Author :
Wilamowski, Bodgan ; Bell, David ; Legowski, Stanislaw ; Abdelkader, Yaser
Author_Institution :
Graduate Center, Univ. of Idaho, Boise, ID, USA
Abstract :
A novel two stage mass filter where the first stage operates in DC/RF mode and second in RF only mode is proposed. This design can be characterized by very high mass resolution and may not require high precision mechanical and electronic design. An ion detector by integrating a VLSI chip with a Faraday cup is described. Extremely low biasing currents, differential and narrow frequency band operation resulted in significant improvement of the signal to noise ratio
Keywords :
Faraday effect; VLSI; counters; mass spectrometer accessories; mass spectrometers; DC/RF mode operation; Faraday cup; RF mode operation; VLSI chip; differential frequency band operation; high mass resolution; ion detector; low biasing currents; narrow frequency band operation; sensitivity enhancement; signal to noise ratio improvement; two stage mass filter; Detectors; Educational institutions; Equations; Filters; Mass spectroscopy; Radio frequency; Signal resolution; Signal to noise ratio; Very large scale integration; Voltage;
Conference_Titel :
Industrial Electronics Society, 2001. IECON '01. The 27th Annual Conference of the IEEE
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-7108-9
DOI :
10.1109/IECON.2001.976470
