Atomic Physic Division

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Fundamental Constants Data Center

Jonathan Baker

Jonathan Baker staff photo

Contact Information

Atomic Physics Division
100 Bureau Dr., Stop 8420
Gaithersburg, MD 20899-8420

Jonathan dot Baker at NIST dot gov
phone: 301-975-4254
fax: 301-975-3038

Education

  • 1993 - PhD, Physics, University of Delaware, "Theoretical Estimates of the 11S and 23S Lamb Shifts in Helium"
  • 1988 - MS, Physics, University of Delaware, 1988, "Variational Calculations of the Energies of Low Lying SStates of Helium"
  • 1984 - BS (cum laude), Physics, University of Maryland

Curriculum Vitae

2005 - Present   National Institute of Standards and Technology (NIST)
2000 - 2005   Management Systems Designers, Inc. (MSD)
1998 - 2000   NIST
1996 - 1998   National Research Council, Post-Doctoral Fellowship, NIST

Research Interests

  • Quantum electrodynamics of one and two electron atoms.
  • Design and maintenence of web based tools to facilitate the search for journal articles pertinent to measurement of fundamental constants for the Fundamental Constants Group.
  • Systems Analyst. Senior developer for the OSIRIS forensic DNA project at the National Institutes of Health (NIH), National Center for Biotechnology Information (NCBI).
  • Supported the Single Nucleotide Polymorphisms (SNP) group at NCBI developing and maintaining the database of single nucleotide polymorphisms (dbSNP). Maintained parts of the dbSNP database that align submitted SNPs to the NCBI human genome assembly.
  • Programmer/Systems Administrator Provided programming support in TeX, perl, c and Fortran for the Fundamental Constants Data Center (FCDC). Also performed systems administration for IBM RS/6000 workstations. Developed web database of relativistic transition probabilities for NIST physics laboratory.
  • Evaluated highly accurate ionization potentials for low-lying energy levels of helium. Non-relativistic energies, relativistic corrections and low-order radiative corrections were computed using a rapidly converging basis, designed to model the analytic structure of the helium non-relativistic wave function at all two and three particle cusps.

Publications

  1. "Sequence variations in the public human genome data reflect a bottlenecked population history."
    Marth G, Schuler G, Yeh R, et al.,
    Publ. Natl. Acad. Sci. USA 100(1), 376-381 (2003).

  2. "dbSNP: the NCBI database of genetic variation,"
    S.T. Sherry, M-H. Ward, M. Kholodov, J. Baker, L. Phan, E.M. Smigielski, and K. Sirotkin,
    Nucleic Acids Res. 29(1), 308-311 (2001).

  3. "High precision calculation of helium atom energy levels,"
    J. Baker, R.N. Hill and J.D. Morgan III,
    in AIP Conf. Proc. 189, pp. 123-145 (New York, 1989).

  4. "Radius of Convergence and analytic behavior of the 1/Z expansion,"
    J.D. Baker, D.E. Freund, R.N. Hill and J.D. Morgan III,
    Phys. Rev. A 41, 1247-1273 (1990).

  5. "Double Photoionization of Excited 1S and 3S States of the Helium Isoelectronic Sequence,"
    R.C. Forrey, H.R. Sadeghpour, J.D. Baker, J.D. Morgan, and A. Dalgarno,
    Phys. Rev. A 51(3), 2112 (1995).

Additional Publications

Fundamental Constants Data Center   |   Atomic Physics Division

Online: July 2007   -   Last update: December 2007