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Search Publications by: Peter J. Mohr (Fed)

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Displaying 76 - 100 of 176

Precise Energies of Highly Excited Hydrogen and Deuterium

November 1, 2002
Author(s)
Svetlana A. Kotochigova, Peter J. Mohr, Barry N. Taylor
The energy levels of hydrogen and deuterium atoms are calculated to provide frequencies for transitions between highly excited states with principal quantum number n up to 200. All known quantum electrodynamics and relativistic corrections have been

Nonresonant Effects in One- and Two-Photon Transitions

June 1, 2002
Author(s)
U Jentschura, Peter J. Mohr
We investigate nonresonant contributions to Rayleigh scattering cross sections in atomic transitions. The problematic nonresonant contributions set a limit to the accuracy to which atomic spectra determine energy levels. Specifically, we show that off

NIST Databases on Atomic Spectra

December 1, 2001
Author(s)
Daniel E. Kelleher, William C. Martin, Wolfgang L. Wiese, Jeffrey R. Fuhr, Arlene Musgrove, Karen J. Olsen, Peter J. Mohr, Joseph Reader, Jean E. Sansonetti, Larissa Podobedova
A summary of the contents and features of the National Institute of Standards and TEchnology (NIST) Atomic Spectra Database (ASD) and other published and upcoming compilations and databases from NIST is presented.

Self-Energy Screening in Two-Electron Ions

October 1, 2001
Author(s)
Paul Indelicato, Peter Mohr
The self-energy screening correction to the Coulomb part of the electron-electron interaction (self-energy screening) is evaluated. We consider only the monopole term, which is the only one present in many cases, and the direct term. We evaluate the energy

Electron Self-Energy for the K and L Shells at Low Nuclear Charge

April 1, 2001
Author(s)
U Jentschura, Peter J. Mohr, G Soff
A nonperturbative numerical evaluation of the one-photon electron self energy for the K- and L-shell states of hydrogen like ions with nuclear charge numbers Z = 1 to 5 is described. Our calculation for the 1S 1/2 state has a numerical uncertainty of 0.8

Adjusting the Values of the Fundamental Constents

March 1, 2001
Author(s)
Peter J. Mohr, Barry N. Taylor
In order to compare theoretical predictions to experimental measurements in many basic studies and applications of physics, it is necessary to know the value of one or more of the fundamental physical constants, such as the electron mass, or energy