Joseph N. Tan
Atomic Physics Division
||Staff Physicist, NIST, Gaithersburg, MD|
|Harvard Research Associate, ATRAP Collaboration, Center for European Nuclear Research (CERN)
Highlight: Background-free observation of cold antihydrogen production and the first glimpse of its internal states
|1996-1997||Scientist, Frequency and Time Systems, Datum Corp.|
|1994-1995||Colorado State University Fellow, NIST, Boulder
Highlight: Bragg diffraction from crystallized ion plasmas, Science 279, p.686-689 (1998).
|1992-1994||JILA Fellow, National Institute of Standards and Technology, Boulder|
|1992||Ph.D. Physics, Harvard University
Thesis Title: "Cooperative Behavior in Cavity-cooled, Parametrically-pumped Electron Oscillators" (a finalist of the first DAMOP Thesis award)
|1986||M.S. Physics, University of Washington, Seattle|
|1985-1986||University of Washington Arts and Sciences Fellow|
|1984-1985||Instructor I, University of the Philippines, Diliman|
|1983||B.S. Physics, University of the Philippines, Diliman|
- trapping, cooling, and spectroscopy of exotic ions
- order in plasmas cooled to low temperature (& driven far from equilibrium)
- precision measurements and tests of QED or the standard model
"Accurate Modeling of Benchmark X-ray Spectra from Highly Charged Ions of Tungsten,"
Y. Ralchenko, J.N. Tan, J.D. Gillaspy, J.M. Pomeroy, and E. Silver Phys. Rev. A 74, 042514 (2006).
"Solution of the X-ray Astrophysics 3C/3D Line Ratio Problem in Nickel: new ab-initio theory and experimental results,"
G.X. Chen, K. Kirby, E. Silver, N.S. Brickhouse, J.D. Gillaspy, J.N. Tan, J.M. Pomeroy, and J.M. Laming, Phys. Rev. Lett. 97, 143201 (2006).
"An Electron Beam Ion Trap (EBIT) plus a microcalorimeter: a good combination for laboratory astrophysics,"
J.N. Tan, E. Silver, J. Pomeroy, J.M. Laming, and J. Gillaspy, Phys. Scr. T119, 30 (2005).
"Aperture Method to Determine the Density and Geometry of Anti-Particle Plasmas,"
P. Oxley, N.S. Bowden, R. Parrott, A. Speck, C. Storry, J.N. Tan, M. Wessels, G. Gabrielse, D. Brzonka, W. Oelert, G. Schepers, T. Sefzick, J. Walz, H. Pittner, T.W. Haensch, and E.A. Hessels, Phys. Lett. B 595, 60 (2004).
"Strongly Magnetized Antihydrogen and Its Field Ionization,"
D. Vrinceanu, B.E. Granger, R. Parrott, H.R. Sadeghpour, L. Cederbaum, A. Mody, J.N. Tan, and G. Gabrielse, Phys. Rev. Lett. 92, 133402 (2004).
"Driven Production of Cold Anti-hydrogen and a First Measured Distribution of Anti-hydrogen States,"
ATRAP Collaboration, Phys. Rev. Lett. 89, 233401 (2002).
"Background-free Observation of Cold Anti-hydrogen with Field-ionization analysis of its States,"
ATRAP Collaboration, Phys. Rev. Lett. 89, 213401 (2002).
"Field Ionization of Magnetized Rydberg Positronium: A New Mechanism for Accumulating Positrons,"
J. Estrada, T. Roach, J.N. Tan, P. Yesley, and G. Gabrielse, Phys. Rev. Lett. 84, 859 (2000).
"Bragg diffraction from crystallized ion plasmas,"
W.M. Itano, J.J. Bollinger, J.N. Tan, B. Jelenkovic, X.-P. Huang, and D.J. Wineland, Science 279, 686-689 (1998).
"Long-range Order in Laser-cooled, Atomic-Ion Wigner Crystals Observed by Bragg Scattering,"
J.N. Tan, J.J. Bollinger, B. Jelenkovic, and D.J. Wineland, Phys. Rev. Lett. 75, 4198 (1995).
"Minimizing The Time-Dilation Shift in Penning Trap Atomic Clocks,"
J.N. Tan, J.J. Bollinger, and D.J. Wineland, I.E.E.E. on Instrum. and Meas. 44(2), (1995).
"Synchronization of Parametrically-pumped Electron Oscillators with Phase Bistability,"
J.N. Tan and G. Gabrielse, Phys. Rev. Lett. 67, 3090 (1991).
"One Electron in an Orthogonalized Cylindrical Penning Trap,"
J.N. Tan and G. Gabrielse, Appl. Phys. Lett. 55, 2144 (1989).
"Self-shielding Superconducting Solenoid Systems,"
G. Gabrielse and J.N. Tan, J. Appl. Phys. 63, 5143 (1988), U.S. Patent #4974113.
"Cyclotron Motion in a Microwave Cavity: Possible Shifts of the Measured Electron g-factor,"
L.S. Brown, G. Gabrielse, K. Helmerson, and J.N. Tan, Phys. Rev. Lett. 55, 44 (1985).