NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Precise Theory of Levels of Hydrogen and Deuterium: The Two-Photon Radiative Corrections
Published
Author(s)
U Jentschura, Peter J. Mohr
Abstract
The two-photon radiative effects are significant quantum electrodynamic correction to the energy levels of hydrogen and deuterium atoms. Calculations of high-order contributions to this correction are reviewed, and the results needed to evaluate energy levels for states with n 200 are given. The results of such an evaluation are available on the NIST Physics Laboratory Web site at physics.nist.gov/hdel.
Jentschura, U.
and Mohr, P.
(2008),
Precise Theory of Levels of Hydrogen and Deuterium: The Two-Photon Radiative Corrections, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD
(Accessed October 12, 2025)