Arthur Jeffrey Dempster
Arthur Jeffrey Dempster | |
|---|---|
Dempster, c. 1925-30 | |
| Born | August 14, 1886 |
| Died | March 11, 1950 (aged 63) Stuart, Florida, U.S. |
| Alma mater | B.S. University of Toronto M.S. University of Toronto Ph.D. University of Chicago |
| Known for | Developed the first modern mass spectrometer, discovered 235U (the fissile isotope of uranium) |
| Awards | Newcomb Cleveland Prize (1929) |
| Scientific career | |
| Fields | Physics |
| External videos | |
|---|---|
| Michael A. Grayson, Discovery of Isotopes of Elements (Part I: Arthur Jeffrey Dempster), Profiles in Chemistry, Chemical Heritage Foundation |
Arthur Jeffrey Dempster (August 14, 1886 – March 11, 1950) was a Canadian-American physicist best known for his work in mass spectrometry and his discovery in 1935 of the uranium isotope 235U. As part of his research, he investigated the isotopic constitution of multiple other elements.