Kozimor receives the Seaborg nuclear chemistry award

LOS ALAMOS COUNTY - Los Alamos National Laboratory said Oct. 13 that scientist Stosh Kozimor has received the American Chemical Society's Glenn T. Seaborg Award for Nuclear Chemistry.

Kozimor is a laboratory fellow in the Inorganic, Isotope, and Actinide Chemistry group, according to the lab's news release. The award recognizes work in heavy-element chemistry, isotope production and radiochemistry. The release says he is the fourth Los Alamos researcher to receive the award, after David Clark, Darleane Hoffman and Arthur Wahl.

The laboratory describes research that includes the first measurements of bond distances for the element einsteinium, and says Kozimor's group was the first to study how actinium behaves in solution. The release names Srinivas Iyer, associate laboratory director for Chemical, Earth and Life Sciences, among the laboratory leaders commenting on the honor.

Source: Los Alamos National Laboratory news release, "Los Alamos scientist wins top nuclear chemistry award," published Oct. 13, 2026.