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Superconducting Tunnel Junction Detectors for Mass Spectrometry  

Ohkubo, M. (Research Institute of Instrumentation Frontier (RIIF), National Institute of Advanced Industrial Science and Technology (AIST))
Zen, N. (Research Institute of Instrumentation Frontier (RIIF), National Institute of Advanced Industrial Science and Technology (AIST))
Kitazume, T. (Research Institute of Instrumentation Frontier (RIIF), National Institute of Advanced Industrial Science and Technology (AIST))
Ukibe, M. (Research Institute of Instrumentation Frontier (RIIF), National Institute of Advanced Industrial Science and Technology (AIST))
Shiki, S. (Research Institute of Instrumentation Frontier (RIIF), National Institute of Advanced Industrial Science and Technology (AIST))
Koike, M. (Research Institute of Instrumentation Frontier (RIIF), National Institute of Advanced Industrial Science and Technology (AIST))
Publication Information
Progress in Superconductivity / v.14, no.2, 2012 , pp. 77-81 More about this Journal
Abstract
With conventional mass spectrometry (MS), ions are separated according to mass/charge (m/z) ratios. We must speculate the z values to obtain the m values. Superconducting tunnel junction (STJ) detectors can solve this problem, and true mass spectrometry becomes possible instead of m/z spectrometry. The STJ detectors were installed in MS instruments with a variety of ion sources. As an example, we report fragmentation analysis of a non-covalent protein complex of hemoglobin.
Keywords
superconducting tunnel junctions; Mass spectrometry; analytical instruments; protein complex; hemoglobin;
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