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Calorimetric Detectors for High Mass Ions
Author(s) -
Booth Norman E.
Publication year - 1997
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/(sici)1097-0231(19970131)11:2<171::aid-rcm736>3.0.co;2-s
Subject(s) - chemistry , ion , detector , analytical chemistry (journal) , chromatography , organic chemistry , optics , physics
In mass spectrometry, the ions of interest are usually detected by techniques based on secondary electron emission using electron multipliers or micro‐channel plates. For large ions of biological interest, these detection techniques are inefficient and eventually break down as the ion mass increases. We discuss the use of low‐temperature detectors which have an efficient response which extends to the highest masses. Recent tests show that a low‐temperature calorimetric detector can measure the kinetic energy of individual incident ions irrespective of their mass or charge state. This detection scheme, when used in a time‐of‐flight spectrometer, could yield both the mass and the charge state of individual ions. © 1997 John Wiley & Sons, Ltd.