NDLI: Accurate mass spectrometry of trapped ions

Content Provider	Springer Nature Link
Author	Bradley, M. Palmer, F. Garrison, D. Ilich, L. Rusinkiewicz, S. Pritchard, D.E.
Copyright Year	1997
Abstract	The Penning trap Ion Cyclotron Resonance (ICR) method we use to weigh atomic masses is reviewed, and our plans for future measurements, new methods, and apparatus improvements are discussed. Our ultimate goal is to develop a new technique for measuring atomic masses with an accuracy of a few parts in 1012. We will do this by comparing the cyclotron frequencies of two simultaneously trapped ions. In order to successfully implement this new method we are developing a quieter, more sensitive DC SQUID-based detector and a new more harmonic trap, and we plan to use our classical squeezing techniques to reduce the effects of thermal noise.With our improved apparatus we will weigh Cs and Rb to help determine the fine structure constant α, weigh 29Si and 30Si as part of the current effort to replace the artifact kilogram standard with a Si crystal containing a known number of atoms, and measure the 3H-3He mass difference to help set a limit on the mass of the electron neutrino. Our higher accuracy will also enable us to ``weigh'' the neutron capture gamma rays of 28Si, 32S, and 48Ti to help determine the molar Planck constant NAh and the fine structure constant α. Finally, with a mass measurement accuracy \sim 10-12 we will be able to ``weigh'' chemical bonds.
Starting Page	227
Ending Page	238
Page Count	12
File Format	PDF
ISSN	03043843
Journal	Hyperfine Interactions
Volume Number	108
Issue Number	1-3
e-ISSN	15729540
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1997-01-01
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Surfaces and Interfaces, Thin Films Nuclear Physics, Heavy Ions, Hadrons Atoms, Molecules, Clusters and Plasmas Condensed Matter
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Atomic and Molecular Physics, and Optics Physical and Theoretical Chemistry Condensed Matter Physics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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