Homepage of Walter Johnson (Notre Dame University)

Walter R. Johnson
Frank M. Freimann Professor of Physics (Emeritus)
Department of Physics
225 Nieuwland Science
University of Notre Dame
Notre Dame, IN 46556
Tel. (574) 631-1164
Fax. (574) 631-5952
Cell. (574) 274-7048

email: johnson@nd.edu

Teaching Material

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

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

Course Material for Physics 80301 Atomic Physics I -- Fall (2005)

Material for C. E. A. Lectures -- July (2005)

Course Material for Physics 70006 E&M I -- Spring (2006)

Meeting with Physics Grad. Students (circa 1965).

Research Areas

Activities (1958-2005)

Activities (2006-2010)

Publications (1958-2011)

Publications (2012-2017)

Atomic Structure Theory: Lectures on Atomic Physics, Walter R. Johnson, Springer Verlag, Berlin (ISBN 978-3-540-68010-9). A textbook on atomic structure for students with a background in quantum mechanics. (Available from amazon.com ) Supplementary material for this book is available at Atomic Structure Material

  1. Thomson Scattering in the Average-Atom Approximation, W.R. Johnson, J. Nilsen and K.T. Cheng, Phys. Rev. E 86, 036410 (2012). arXiv:1207.0178
  2. Using the X-FEL to understand X-ray Thomson scattering for partially ionized plasmas, J. Nilsen, W.R. Johnson and K.T. Cheng, 13th International Conference on X-ray Lasers Paris, France June 10, 2012 through June 15, 2012, Report-no: LLNL-PROC-564720. arXiv:1207.5075
  3. Average-Atom Model for X-ray Scattering from Warm Dense Matter, W.R. Johnson, J. Nilsen and K.T. Cheng, Submitted to proceedings of Workshop IV: Computational Challenges in Warm Dense Matter IPAM (UCLA) May 21 - 25 (2012). arXiv:1211.0227
  4. The effect of bound states on X-ray Thomson scattering for partially ionized plasmas, J. Nilsen, W.R. Johnson and K.T. Cheng, High Energy Density Physics, 9, 388-391 (2013). arXiv:1212.5972
  5. Resonant Bound-Free Contributions to Thomson Scattering of X-rays by Warm Dense Matter, W.R. Johnson, J. Nilsen and K.T. Cheng, High Energy Density Physics, 9, 407-409 (2013). arXiv:1301.3440
  6. X-ray Thomson scattering for partially ionized plasmas including the effect of bound levels, J. Nilsen, W.R. Johnson and K.T. Cheng, X-Ray Lasers and Coherent X-Ray Sources: Developement and Applications X, Proceedings of SPIE 2013, p. 8849 arXiv:1309.6281
  7. Thomson scattering from a three-component plasma, W.R. Johnson and J. Nilsen, Phys. Rev. E, 89, 023107 (2014). PDF
  8. Using the X-FEL to Understand X-Ray Thomson Scattering for Partially Ionized Plasmas, J. Nilsen, W. R. Johnson and K. T. Cheng, X-Ray Lasers 2012, Springer Proceedings in Physics, 147, 193-198 (2014)
  9. Average-atom treatment of relaxation time in X-ray Thomson scattering from warm-dense matter, W. R. Johnson and J. Nilsen, Phys. Rev. E, 93, 033295 (2016). arXiv:1512.09155v4
  10. Relativistic many-body calculation of energies, lifetimes, polarizabilities, blackbody radiative shift, and hyperfine constants in Lu2+, U. I. Safronova, M. S. Safronova and W. R. Johnson, Phys. Rev. A, 94 032506 (2016). arXiv:1607.003880v3
  11. Forbidden M1 and E2 transitions in monovalent atoms and ions, U. I. Safronova, M. S. Safronova and W. R. Johnson, Phys. Rev. A, 95, 042507 (2017). arXiv:1611.01191
  12. Corrigendum: Two-photon transitions in Ca+, Sr+ and Ba+ ions (2010 J. Phys. B: At. Mol. Opt. Phys. 43 074014) M. S. Safronova, W. R. Johnson and U. I. Safronova, J. Phys. B: At. Mol. Opt. Phys. 50 189501 (2017). PDF
  13. X-ray line coincidence photopumping in a solar flare, F. P. Keenan, K. Poppenhaeger, M. Mathioudakis, S. J. Rose, J. Flowerdew, D. Hynes, Damian J. Christian, J. Nilsen and W. R. Johnson, Monthly Notices of the Royal Astronomical Society, 474, 3782–3786 (2017). PDF
  14. Equation of state of boron nitride combining computation, modeling, and experiment, Shuai Zhang, Amy Lazicki, Burkhard Militzer, Lin H. Yang, Kyle Caspersen, Jim A. Gaffney, Markus W. Däne, John E. Pask, Walter R. Johnson, Abhiraj Sharma, Phanish Suryanarayana, Duane D. Johnson, Andrey V. Smirnov, Philip A. Sterne, David Erskine, Richard A. London, Federica Coppari, Damian Swift, Joseph Nilsen, Art J. Nelson and Heather D. Whitley, Phys. Rev. B, 99 165103 (2019).
  15. Determination of the scalar polarizability of the cesium 6s 2S1/2 - 7s 2S1/2 transition and implications for atomic parity violation, George Toh, Amy Damitz, Carol E. Tanner, W. R. Johnson, and D. S. Elliott, Phys. Rev. Letts., 123, 073002 (2019). arXiv:1905.02768
  16. Opacity of shock-heated boron plasmas,s W. R. Johnson and J. Nilsen, HEDP 31, 92-98 (2019) DOI
  17. Role of opacity at the 9 keV back lighter energy used in measuring the equation of state of boron at pressures up to a Gbar, Joseph Nilsen, Daniel Aberg, Brian Wilson, Lin Yang, Philip Sterne, Markus Daene, Maison Martin, Heather Whitley, Shuai Zhang, Walter Johnson, HEDP 37, 100880 (2020). DOI
  18. A measurement of the equation of state of carbon envelopes of white dwarfs, Andrea L. Kritcher, Damian C. Swift, Tilo Döppner, Benjamin Bachmann, Lorin X. Benedict, Gilbert W. Collins, Jonathan L. DuBois, Fred Elsner, Gilles Fontaine,, Jim A. Gaffney, Sebastien Hamel, Amy Lazicki, Walter R. Johnson, Natalie Kostinski, Dominik Kraus, Michael J. MacDonald, Brian Maddox, Madison E. Martin, Paul Neumayer, Abbas Nikroo, Joseph Nilsen, Bruce A. Remington, Didier Saumon, Phillip A. Sterne, Wendi Sweet, Alfredo A. Correa, Heather D. Whitley, Roger W. Falcone, Siegfried H. Glenzer, Nature 584, 51-54 (2020). DOI
  19. Average-Atom Calculations of Bound-Free ans Free-Free Cross Sections in Dense Plasmas, W. R. Johnson and Joseph Nilsen, Phys. Rev. E, 102 043209 (2020). DOI
  20. Comparing opacity tables for boron and plastic with average atom calculations at the 9 keV back lighter energy used in radiography to measure the equation of state Hugoniot at pressures up to a Gbar, Joseph Nilsen and Walter R. Johnson, LLNL-TR-814507, submitted to HEDP

Other (Unpublished) Atomic Physics Material

Atomic Theory Group at Notre Dame, Close Collaborators & Visitors

Useful Links

Societies, Institutes, and Publishers

* American Physical Society
* ITP, Santa Barbara
* Theoretical AMO Physics, Boulder
* ITAMP
* World Science
* American Institute of Physics
* Institute of Physics

Useful Data Sources

* Netlib at ORNL
* NIST Home Page
* Web Elements
* Particle Data Group
* Atomic Physics on the Internet

TeX and LaTeX

* TeX Users Group
* The PracTeX Journal
* Donald E. Knuth
* CTAN

Other Links

* Alexander von Humboldt Foundation
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