Alfred O. C. Nier
Alfred O. C. Nier | |
|---|---|
Nier in 1940 holding a glass mass spectrometer chamber. | |
| Born | Alfred Otto Carl Nier May 28, 1911 |
| Died | May 16, 1994 (aged 82) Minneapolis, Minnesota |
| Nationality | American |
| Awards | William Bowie Medal (1992) |
| Scientific career | |
| Fields | Physicist |
| Institutions | University of Minnesota |
Alfred Otto Carl Nier (May 28, 1911 – May 16, 1994) was an American physicist who pioneered the development of mass spectrometry. He was the first to use mass spectrometry to isolate uranium-235 which was used to demonstrate that 235U could undergo fission and developed the sector mass spectrometer configuration now known as Nier-Johnson geometry.