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Application of microcalorimeter energy measurement to biopolymer mass spectrometry

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3 Author(s)
Rabin, M.W. ; Nat. Inst. of Stand. & Technol., Boulder, CO, USA ; Hilton, G.C. ; Martinis, John M.

We have performed electrospray ionization mass spectrometry using a magnetic-sector mass spectrometer of proteins, detecting the ions with a normal-insulator-superconductor microcalorimeter detector. We emphasize the measurement of ion-impact energy as a way to obtain extra information that is unavailable in normal mass spectrometry. Energy measurements are used to discriminate against erroneous ion-strikes, to resolve ambiguities that cannot be resolved by normal mass spectrometry, and to illustrate some of the performance limits of the current detector design

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Applied Superconductivity, IEEE Transactions on  (Volume:11 ,  Issue: 1 )