Gordon Berry

Professor, Atomic Physics

Research Interests

This experimental atomic physics program consists of atomic structure studies in low- and medium-stripped atomic ions. Principal areas of current interest involve precision tests of relativistic many-body structure and the interaction of X-rays with atoms, ions, molecules and surfaces.

A low-energy accelerator-based atomic physics laboratory operates at up to 200 kV and provides singly charged ions in the experimental atomic physics area.

Present studies include: precision absorption and lifetime studies in cesium to provide low energy tests of parity non-conservation; spectroscopic studies of multiply-excited high-spin states of relevance to new xuv lasers.

Selected Publications

“ 1s2s2p²3s⁶P--1s2p³3s⁶S^o Transitions in O IV,” Bin Lin, H. Gordon Berry, Tomohiro Shibata, A. Eugene Livingston, Henri-Pierre Garnir, Thierry Bastin, J. Desesquelles, and Igor Savukov, Phys. Rev. A67, 062507 (2003).

“Laser gas-discharge absorption measurements of the ratio of two transition rates in argon,” I.M. Savukov and H.G. Berry, Physics Archives 0208024, Phys. Rev. A67, 032505 (2003).

“Measurement of the 6s-7p transition probabilities in atomic cesium and a revised value for the week charge Q_W,” A.A. Vasilyev, I.M. Savukov, M.S. Safronova, and H.G. Berry, Phys. Rev. A66, 020101 (2002).

“Charge Transfer processes in asymmetric fragmentation of C₆₀⁵⁺,” L. Chen, J. Bernard, H.G. Berry, R. Bredy, J. Desesquelles, and S. Martin, Physica Scripta T92, 138 (2001).

“Contributions of negative energy states (NES) to magnetic dipole transitions in the helium isoelectronic sequence, and for the neutral alkalis,” H.G. Berry and I.M. Savukov, American Institute of Physics, CAARI 2000 Conf. Proc. 576, 80 (2001).

Honors and Activities

• Fellow, American Physical Society

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