Yuri Ralchenko

Portrait of Yuri Ralchenko

Yuri Ralchenko

Visiting Research Scientist

yralchen@umd.edu Physical Sciences Complex

Dr. Ralchenko received his Ph.D. from the Moscow Institute of Physics and Technology in 1988 on research on six-quark resonances in the QCD-string model. He then worked at the Institute of Spectroscopy (Troitsk, Russia), Weizmann Institute of Science (Rehovot, Israel), and National Institute of Standards and Technology (Gaithersburg, MD) before joining NASA/UMCP in 2025. His scientific interests are in atomic and plasma spectroscopy, collisional-radiative modeling of plasma emission, and development of atomic databases.

Latest Papers

Z dependence of 4f−5s electric-octupole emission in Ag-like ions

| Physical Review A
Author(s): H. A. Sakaue, E. Takacs, Dipti, et. al
UMD Author(s): Yuri Ralchenko


Testing relativistic atomic structure and bound-state quantum electrodynamics with Co-like ions

| Physical Review A
Author(s): R. Silwal, S. A. Blundell, S. C. Sanders, et. al
UMD Author(s): Yuri Ralchenko


Benford’s law in atomic spectra and opacity databases

| Journal of Quantitative Spectroscopy and Radiative Transfer
Author(s): Jean-Christophe Pain, Yuri Ralchenko
UMD Author(s): Yuri Ralchenko


Zeeman effect of isotopes of Kr and Xe investigated at the linear plasma device PSI-2

| Plasma Sources Science and Technology
Author(s): M Sackers, O Marchuk, D Dipti, et. al
UMD Author(s): Yuri Ralchenko


Recommended electron-impact excitation and ionization cross sections for Be II

| Atomic Data and Nuclear Data Tables
Author(s): Dipti, I. Bray, D.V. Fursa, et. al
UMD Author(s): Yuri Ralchenko


Observations and identifications of extreme ultraviolet spectra of Ca-like to Na-like neodymium ions using an electron beam ion trap

| Journal of Physics B: Atomic, Molecular and Optical Physics
Author(s): Y Yang, Dipti, C Suzuki, et. al
UMD Author(s): Yuri Ralchenko


Analysis of E3 Transitions in Ag-like High-Z Ions Observed with the NIST EBIT

| Atoms
Author(s): Endre Takacs, Dipti, David S. La Mantia, et. al
UMD Author(s): Yuri Ralchenko


Determination of Electron Beam Energy in Measuring the Electron-Impact Ionization Cross Section of He-like Fe24+

| Atoms
Author(s): Yang Yang, Dipti, Amy Gall, et. al
UMD Author(s): Yuri Ralchenko


A critical compilation of experimental data on the 1s2l2l′ core-excited states of Li-like ions from carbon to uranium

| Atomic Data and Nuclear Data Tables
Author(s): V.I. Azarov, A. Kramida, Yu. Ralchenko
UMD Author(s): Yuri Ralchenko


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