Philip Abelson

Philip Abelson
Name	Philip Abelson
Caption	Abelson in 1966
Birth date	27 April 1913
Birth place	Tacoma, Washington
Death date	01 August 2004
Death place	Bethesda, Maryland
Fields	Nuclear physics, Geochemistry
Alma mater	Washington State University, University of California, Berkeley
Known for	Isotope separation, ''Science'' editor, Manhattan Project
Awards	National Medal of Science (1987), Vannevar Bush Award (1996)

Philip Abelson was an influential American physicist, geochemist, and scientific editor whose multifaceted career spanned pivotal discoveries in nuclear science and decades of leadership in scientific publishing. A key contributor to the Manhattan Project, he later became a prominent editor of the journal Science and an advocate for energy research. His work earned him prestigious accolades including the National Medal of Science.

Early life and education

Born in Tacoma, Washington, he displayed an early aptitude for science. He pursued his undergraduate studies in chemistry and physics at Washington State University, graduating in 1933. For his doctoral work, he entered the University of California, Berkeley, where he studied under the renowned physicist Ernest O. Lawrence at the Radiation Laboratory. His graduate research involved using the cyclotron to investigate radioactive isotopes, laying the groundwork for his future contributions to nuclear physics.

Scientific contributions

Abelson made several significant discoveries early in his career. In 1940, while still at Berkeley, he co-discovered the element neptunium by bombarding uranium with neutrons, a critical step in the discovery of plutonium. His expertise in isotope separation proved vital, particularly his development of the liquid thermal diffusion method for enriching uranium-235. This process was later applied on a large scale at the S-50 plant in Oak Ridge, Tennessee. His research interests later expanded into biogeochemistry and paleontology, where he conducted pioneering studies on amino acids in fossils.

Manhattan Project and nuclear research

Recruited for the Manhattan Project, he played a crucial role in the effort to produce fissile material for an atomic bomb. His thermal diffusion work provided a key feed material for the massive Y-12 electromagnetic separation plant at Oak Ridge. After World War II, he continued his nuclear research at the Carnegie Institution for Science's Geophysical Laboratory in Washington, D.C.. There, he shifted focus, applying nuclear techniques to problems in geology and biology, and became a strong proponent of nuclear energy and later, breeder reactor technology.

Editorial career and advocacy

In 1962, he assumed the role of editor for the journal Science, published by the American Association for the Advancement of Science (AAAS), becoming its director in 1974. For over two decades, his editorials were a powerful force in shaping scientific policy, advocating for research in energy independence, oceanography, and the practical applications of science. He was a vocal critic of what he saw as excessive regulation and frequently championed the role of technology in solving societal problems, influencing debates within institutions like the National Academy of Sciences and the United States Congress.

Awards and honors

His extensive contributions were recognized with numerous awards. He received the National Medal of Science from President Ronald Reagan in 1987. Other significant honors included the Vannevar Bush Award from the National Science Foundation, the Public Welfare Medal from the National Academy of Sciences, and the Kalinga Prize for the popularization of science from UNESCO. He held memberships in elite societies such as the American Philosophical Society and served as president of the Carnegie Institution for Science from 1971 to 1978.

Personal life and legacy

He married Neva Abelson, a distinguished research physician who co-discovered the Rh blood group system. Their partnership was both personal and professional. Following a long career that bridged groundbreaking research and influential science communication, he died in Bethesda, Maryland. His legacy endures through his pivotal role in 20th-century nuclear chemistry, his forceful advocacy for scientific and technological progress, and his long stewardship of one of the world's premier scientific journals.

Category:American physicists Category:Manhattan Project people Category:American science writers Category:National Medal of Science laureates