Lynn R. Anspaugh

Lynn R. Anspaugh died Sept. 13, 2026.

Anspaugh received a doctor of philosophy in biophysics from the University of California, Berkeley, in 1963, and dedicated his career to advancing public health and safety through the study of radiation.

He worked at Lawrence Livermore National Laboratory (LLNL) from 1963 to 1996 where he served in several positions, including as division leader of the Environmental Sciences Division and director of the Risk Sciences Center. After LLNL, he held positions as research professor and subsequently as research professor emeritus in the Department of Radiology’s Radiobiology Division at the University of Utah. He authored and co-authored about 400 scientific publications that helped shape modern retrospective radiation dosimetry and risk assessment. Among his major career achievements, he served as an expert consultant to international and federal bodies including the DOE, CDC, NCI, National Academies, and the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR), evaluating radiation exposures and thyroid dosimetry from nuclear weapons testing, the Chernobyl accident, and other nuclear events. He served as scientific director for the Off-Site Radiation Exposure Review Project (ORERP). He and his co-investigators developed the methodology used to estimate radiation doses from both external and internal radiation exposures and meticulously mapped out historical estimates of external gamma-ray exposures stemming from different nuclear test series. Following the 1986 Chernobyl disaster, he analyzed Soviet data and worldwide radiation monitors to assess long-term fallout from radionuclides such as cesium-137 and strontium-90 from the Chernobyl accident. For many years, he worked as a principal investigator, alongside U.S. and Russian Federation scientists, on the Joint Coordinating Committee for Radiation Effects Research (JCCRER) health studies. He earned multiple professional and institutional honors throughout his career, including being elected as a Fellow of the Health Physics Society in recognition of his significant contributions to the field of radiation protection and health physics.