Teaching 2001-2004

Course Material for Physics 356 E&M -- Fall (2003)

Course Material for Physics 357 Electromagnetic Waves -- Spring (2004)

Course Material for Physics 607 Atomic Physics -- Fall (2001)

Meeting with Physics Grad. Students (circa 1965).

Research Areas

• Relativistic and correlation effects in heavy atoms, including relativistic Hartree Fock calculations, relativistic many-body perturbation theory (MBPT) calculations, and iterative singles-doubles (SD) all-order methods. Present efforts:
  1. Nonlinear terms in SD coupled cluster equations.
  2. Third-Order MBPT for systems with two valence electrons.
  3. Extending the SD method to Two valence electron systems.
• Applications of MBPT to give accurate energies, transition rates, and hyperfine constants for low-lying levels of ions in various isoelectronic sequences. These studies include the Li, Na, Cu, Ne, Be, B, Mg, Pd, and Ag sequences. Applications of all-order SD methods to alkali-metal atoms from Li to Fr.
• Weak interactions in heavy atoms atoms. Calculations of PNC amplitudes and electric dipole enhancement factors.
• CI calculations of energies, transition probabilities, hyperfine quenching, polarizabilities, and two-photon transitions in heliumlike ions.
• Applications of the relativistic random-phase approximation (RRPA) to photoionization, including non-dipole corrections to angular distributions.
• Plasma Physics: Average atom model and the Kubo-Greenwood theory applied to study the optical response in a warm dense plasma.

Activities (1958-2003)

Activities (2004-2005)

• Invited talk entitled Optical Properties of Plasmas Based on an Average-Atom Model at the 11th International Conference on Radiative Properties of Hot Dense Matter, Santa Barbara, CA , 1-5 Nov, 2004
• Seminar entitled Optical Properties of Plasmas Based on an Average-Atom Model Department of Theoretical Physics, University of New South Wales Sydney, Australia, 30 Mar, 2005

Publications (1958-2003)

Publications (2004-2005)

1. Accurate Relativistic Calculations Including QED Contributions for Few-Electron Systems W. R. Johnson, K. T. Cheng, and M. H. Chen, in Relativistic Electronic Structure Theory: Part 2. Applications (Theoretical and Computational Chemistry # 14) Ed. Peter Schwerdtfeger, Chap. 3, ISBN 0444512993 (Elsevier, 2004). pdf-preprint (531K)
2. Finite-field evaluation of the Lennard-Jones atom-wall interaction constant C₃ for alkali-metal atoms W. R. Johnson, V. A. Dzuba, U. I. Safronova, and M. S. Safronova, Phys. Rev. A 69, 022508, 1-6 (2004) . arXiv:physics/0310141
3. Relaxation effect and radiative corrections in many-electron atoms Andrei Derevianko, Boris Ravaine, and W. R. Johnson, Phys. Rev. A 69, 054502, 1-4 (2004). arXiv:physics/0401043
4. Nondipole effects in the photoionization of Xe 4d_5/2 and 4d_3/2: Evidence for quadrupole satellites, O. Hemmers, R. Guillemin, D. Rolles, A. Wolska, D. W. Lindle, K. T. Cheng, W. R. Johnson, H. L. Zhou and S. T. Manson, Phys. Rev. Letts. 93, 113001, 1-4 (2004). pdf reprint
5. Excitation energies, oscillator strengths, and lifetimes of levels along the gold isoelectronic sequence. U. I. Safronova and W. R. Johnson, Phys. Rev. A 69, 052511, 1-9 (2004). arXiv:physics/0402133
6. Off-diagonal hyperfine interaction between the 6p_1/2 and 6p_3/2 levels in ¹³³Cs. W. R. Johnson, H. C. Ho, Carol E. Tanner and Andrei Derevianko, Phys. Rev. A 70, 014501, 1-3 (2004). arXiv:physics/0404102
7. Nondipole effects in Xe 4d photoemission, O. Hemmers, R. Guillemin, A. Wolska, D. W. Lindle, D. Rolles, K. T. Cheng, W. R. Johnson, H. L. Zhou and S. T. Manson, Submitted to Journal of Electron Spectroscopy and Related Phenomena, July (2004). pdf preprint 133K
8. Excitation energies, hyperfine constants, E1, E2, M1 transition rates, and lifetimes of 6s²nl states in Tl I and Pb II. U. I. Safronova, M. S. Safronova, and W. R. Johnson, submitted to Phys. Rev. A, Oct. 12 (2004). arXiv:physics/0410079
9. Optical Properties of Plasmas Based on an Average-Atom Model, W. R. Johnson, C. Guet, and G. F. Bertsch, submitted to Journal of Quantitative Spectroscopy & Radiative Transfer, Nov. (2004). PDF - 390K
10. Analysing the dramatic impact of the bound electron contribution to the index of refraction in plasmas, Joseph Nilsen and W. R. Johnson, submitted to Phys. Rev. E, Nov. (2004). PDF - 520K
11. Impact of anomalous dispersion on the interferometer measurements of plasmas. J. Nilsen, W. R. Johnson, C. A. Iglesias, and J. Scofield, submitted to Journal of Quantitative Spectroscopy & Radiative Transfer, Dec. 14 (2004). PDF - 635K
12. Relativistic many-body calculations of excitation energies, line strengths, transition rates, and oscillator strengths in Pd-like ions. U. I. Safronova, T. E. Cowan, and W. R. Johnson, submitted to Canadian Journal of Physics, Mar. 4 (2005). PDF - 252K

Other (Unpublished) Atomic Physics Material

• Lecture Notes on Atomic Physics, W. R. Johnson (unpublished,1994). PDF - 1238K
• Non-dipole angular distribution parameters for rare gas atoms (graphs), W. R. Johnson (1999). PDF - 204K
• Non-dipole angular distribution parameters for rare gas atoms (tables), W. R. Johnson (1999). TableI.txt TableII.txt
• Auger rates for Argon and Ni-like ions, W. R. Johnson (1999). Argon: PDF - 6K and Ni-like: PDF - 15K
• Notes on weak interactions in atoms, W. R. Johnson (1999). PDF - 110K
• Photodetachment of I-, W. R. Johnson (1999). PDF - 11K
• Error Analysis for the C₆ Coefficient in Rb, M. S. Safronova and W. R. Johnson (1999). PDF - 45K
• Mott Scattering, W. R. Johnson (1965). PDF - 56K
• Temperature-Dependent Thomas-Fermi Theory, W. R. Johnson (2000). PDF - 115K
• Fortran program for Temperature-Dependent Thomas-Fermi atom , W. R. Johnson (2002). thomas.tar.gz
• Nuclear size effects in Cs PNC, A. Derevianko and W. R. Johnson (2000). PDF - 54K
• Kohn-Sham Exchange, W. R. Johnson (2000). PDF - 48K
• Rydberg States of Th III and U V, W. R. Johnson (2000). PDF - 80K
• Magnetization Distribution, W. R. Johnson (2000). PDF - 42K
• Photoabsorption in Hot Dense Plasmas, W. R. Johnson (2001). PDF - 240K
• Isotope Shift, W. R. Johnson (2001). PDF - 94K
• Lennard-Jones potential inside a spherical cavity, W. R. Johnson (2001). PDF - 60K
• Higher-Order Calculations of Atomic Polarizabilities, W. R. Johnson and M. S. Safronova (2001). PDF - 93K
• Note on the Uehling Potential, W. R. Johnson (2001). PDF - 44K
• Pressure in the Average-Atom Model, W. R. Johnson (2002). PDF - 78K
• Free-Particle Continuum Density, W. R. Johnson (2002). PDF - 65K
• Two-photon energy distributions for decay of 2¹S₀ states of He-like ions (Z=2-30), W. R. Johnson (2002). ascii - 25K
• Note on the atomic edm and Schiff's theorem, W. R. Johnson (2002). PDF - 70K
• Comments on the hyperfine structure of the 6p3/2 state of Cs, W. R. Johnson (2003). PDF - 90K
• Note on the anomalous moment corrections to transition amplitudes, W. R. Johnson (2002). PDF - 107K

Atomic Theory Group at Notre Dame

• Walter. R. Johnson, Frank M. Freimann Professor of Physics
• Ulyana I. Safronova, Adjunct Professor of Physics (Professor of Physics, Academy of Sciences, Russia), present address: Dept. of Physics, University of Nevada (Reno).
• Marianna S. Safronova, Research Collaborator, Asst. Professor of Physics, Uiversity of Deleware
• Igor M. Savukov, Research Collaborator, Postdoctoral Associate Princeton University
• Andrei Derevianko, Research Collaborator, Asst. Professor of Physics (University of Nevada Reno)
• Vladimir Dzuba, Visiting Professor (University of New South Wales, Sydney, Australia) June-July 1998, Aug-Sept 2000, May-June 2002, June-july 2004
• Mikhail G. Kozlov, Visiting Professor (Petersburg Nuclear Physics Institute, Gatchina, 188300, Russia) Feb 15 - Apr 15 2001 and Oct 2003
• Leonti Labzowski, Visiting Professor (St. Petersburg State University, St. Petersburg, Russia) Mar 2 - - Apr 30 2002

Useful Links

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