Louis Harold Gray
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| Louis Harold Gray | |
|---|---|
| Born | 10 November 1905 Richmond upon Thames, England |
| Died | Script error: The function "death_date_and_age" does not exist. |
| Known for | Bragg–Gray cavity theory Gray (unit) |
| Notable awards | Fellow of the Royal Society[1] |
| Author abbrev. (botany) | |
Louis Harold Gray (10 November 1905 – 9 July 1965) was an English physicist who worked mainly on the effects of radiation on biological systems, inventing the field of radiobiology as he went. A summary of his work is given below. Amongst many other achievements, he defined a unit of radiation dosage which was later named after him as an SI unit, the gray.[3][4]
Career
- 1933 - Hospital physicist at Mount Vernon Hospital, London
- 1936 - Developed the Bragg-Gray equation, the basis for the cavity ionization method of measuring gamma-ray energy absorption by materials
- 1937 - Built an early neutron generator at Mount Vernon Hospital
- 1938 - Studied biological effects of neutrons using the generator
- 1940 - Developed concept of RBE (Relative Biological Effectiveness) of doses of neutrons
- 1952 - Initiated research into cells in hypoxic tumors and hyperbaric oxygen
- 1953 - Established the Gray Laboratory at Mount Vernon Hospital
- 1953 - 1960 - Under Gray's direction, Jack W. Boag developed pulse radiolysis
- 1962 - Ed Hart, of Argonne National Laboratory, and Jack Boag discovered the hydrated electron using pulse radiolysis at the Gray Laboratory - This discovery initiated a new direction of research that is still very active today and is vital for understanding the effects of radiation on biological tissue, for instance in cancer treatment.
References
External links
- Definition of RBE
- The LH Gray Memorial Trust founded in 1967
- Cancer Research UK and Medical Research Council Oxford Institute for Radiation Oncology
