February 17, 2019
The National Society of Black Physicists honors Dr. Arthur Bertram Cuthbert Walker Jr.. Dr. Walker was a solar physicist and a pioneer of EUV/XUV optics.
Arthur Bertram Cuthbert Walker Jr. (August 24, 1936 – April 29, 2001) was a solar physicist and a pioneer of EUV/XUV optics.
Walker was born in Cleveland, Ohio on August 24, 1936, to Arthur and Hilda Walker. He was an only child. Arthur attended Bronx High School of Science. In 1957 he completed his undergraduate studies at Case Institute of Technology in Cleveland. Here, he earned his bachelor's degree in physics.
Both his master's degree and doctorate in astrophysics came from the University of Illinois, in 1958 and 1962 respectively. His dissertation for his doctorate titled, “Photomeson Production from Neutrons Bound in Helium and Deuterium,” focused on the atomic binding of protons and neutrons, as well as the radiation and force carriers involved in this process.
He is most noted for having developed normal incidence multilayer XUV telescopes to photograph the solar corona. Two of his sounding rocket payloads, the Stanford/MSFC Rocket Spectroheliograph Experiment and the Multi-Spectral Solar Telescope Array, recorded the first full-disk, high-resolution images of the Sun in XUV with conventional geometries of normal incidence optics; this technology is now used in solar telescopes such as SOHO/EIT and TRACE, and in the fabrication of microchips via ultraviolet photolithography.
Dr. Walker is a fellow of the National Society of Black Physicists.