Areas of Interest
Dr. Chung carries out theoretical studies for atomic systems containing several electrons. Atomic properties such as energies, wave functions, lifetimes, isotope shifts, fine and hyperfine structures are calculated for bound states as well as highly-excited resonance systems. Polarizability and dynamic polarizability of atomic systems are also computed to obtain the van der Waals coefficients for molecules. New methods, such as saddle-point techniques, full-core plus correlation, and restricted-variation methods are being developed in order to overcome the difficulties encountered in other theoretical approaches. These methods have been highly successful; very high precision results are obtained for three- and four-electron systems. The results thus obtained are very useful to experimentalists in the analyses of observed optical and electron spectra. Calculations are underway to apply these methods to five- and six-electron systems.
Recent Publications
"2s2p2p 4P state of He-,"
Phys. Rev. A.
51.
K. T. Chung.
(1995). p. 844.
"Energy, fine structure and hyperfine structure studies of the core-excited states 1s2s2p2(5P) and 1s2p3(5S) for Be-like systems,"
Phys. Rev. A.
51.
H. Y. Yang and K. T. Chung.
(1995). p. 3621.
"Energy, fine structure and oscillator strength of 1s22p2p1S, 1D and 3P2,1,0 states of Be-like ions,"
Physica Scripta
52.
X. W. Zhu and K. T. Chung.
(1995). p. 654.
"Electron affinity of 1s22s2p 3Po and 1s22p23P of beryllium,"
Phys. Rev. A.
52.
J.-J. Hsu and K. T. Chung.
(1995). p. R898.
"Energy and lifetime of triply-excited states of lithium,"
Phys. Rev. A.
52.
K. T. Chung and B.-C. Gou.
(1995). p. 3669.
"Binding energy and Auger electron energies of 1s2s2p3 6So of the beryllium anion,"
J. Phys. B. Lett.
28.
J. J. Hsu and K. T. Chung.
(1995). p. L649.
"Retardation long-range potentials between two helium atoms,"
Phys. Rev. A.
53.
M.-K. Chen and K. T. Chung.
(1996). p. 1439.
"High 2Po resonances of triply-excited lithium atom,"
Phys. Rev. A.
53.
Kwong T. Chung and B. C. Gou.
(1996). p. 2189.
"Energy and lifetime of triply excited states of lithiumlike beryllium and carbon,"
J. Phys. B.
29.
B. C. Gou and K. T. Chung.
(1996). p. 6103.
"Binding energy of the metastable He- ion,"
Phys. Rev. A.
55.
P. Kristensen, U. V. Pedersen, V. V. Petrunin, T. Andersen, and K. T. Chung.
(1997). p. 978.
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