Interaction of highly excited (Rydberg-state) atoms with charged particles
and fields. Coherence effects in collisions. Alignment and orientation in
electron-atom and ion-atom collisions. Precision fine-structure spectroscopy
of highly excited states. Collisions of coherent elliptic, circular and
Stark Rydberg states. Laboratory measurement of collision processes relevant
to the interstellar medium. Relationship of quantal, semi-classical and
classical theoretical formulations of the Three-Body Problem applied to
atomic collisions. Advanced instrumentation and techniques for research in
highly excited atoms.
Education
B.A., Physics Swarthmore College (1965)
Ph.D., Experimental Atomic Physics, Harvard University (1971)
Selected Recent Publications
K.B. MacAdam and C.S. Hwang, "The Stark ball: A programmable multipolar
environment," Rev. Sci. Instrum. 74, 2267 (2003).
pdf
K.B. MacAdam and E. Horsdal-Pedersen, "Topical Review: Charge Transfer
from Coherent Elliptic States," J. Phys. B. 36, R167 (2003).
pdf
S.F. Dyubko, V.A. Efremov, V.G. Gerasimov and K.B. MacAdam, "Microwave
spectroscopy of Al I Rydberg states: F terms," J. Phys. B. 36, 3797
(2003).
pdf.
S. Böhm, A. Müller, S. Schippers, W. Shi, H. Danared, N. Eklöw, M.
Fogel,
R. Schuch, N. Djuric, G.H. Dunn and K.B. MacAdam, "Measurement of the
field-induced dielectronic recombination rate enhancement of N4+ ions
differential in the Rydberg quantum number n," Nucl. Instrum. Methods
B
205, 370 (2003).
pdf.
K. Nagesha and K.B. MacAdam, "Electron impact ionization of sodium
Rydberg atoms below 2 eV," Phys. Rev. Lett. 91, 113202 (2003).
pdf.
C.S. Hwang and K.B. MacAdam, "Electron Capture from Aligned p-State
Rydberg Atoms," Phys. Rev. A. 68, 042709 (2003).
pdf.
S.F. Dyubko, V.A. Efremov, V.G. Gerasimov and K.B. MacAdam, "Microwave
spectroscopy of Al I Rydberg states: D and G terms," J. Phys. B. 36,
4827 (2003).
pdf.
