Raymond Davis Jr.
Facts
Photo from the Nobel Foundation archive.
Raymond Davis Jr.
The Nobel Prize in Physics 2002
Born: 14 October 1914, Washington, D.C., USA
Died: 31 May 2006, Blue Point, NY, USA
Affiliation at the time of the award: University of Pennsylvania, Philadelphia, PA, USA
Prize motivation: “for pioneering contributions to astrophysics, in particular for the detection of cosmic neutrinos”
Prize share: 1/4
Work
In certain nuclear reactions (such as when protons combine to form helium nuclei) elusive particles called neutrinos are created. Raymond Davies wanted to detect neutrinos in radiation from space to confirm the theory that this kind of nuclear reaction is the source of the sun’s energy. Beginning in the 1960s, he placed a large tank containing a chlorine-rich liquid inside a mine. In rare cases, a neutrino interacted with a chlorine atom to form an argon atom. By counting these argon atoms, neutrinos from space could be detected.
Nobel Prizes and laureates
Six prizes were awarded for achievements that have conferred the greatest benefit to humankind. The 12 laureates' work and discoveries range from proteins' structures and machine learning to fighting for a world free of nuclear weapons.
See them all presented here.
