Robert J. LeRoy
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Robert J. Le Roy (September 30, 1943 – August 10, 2018) was a Canadian
chemist A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties. Chemists carefully describe th ...
. He held the distinguished title of University Professor at the University of Waterloo.


Career

His work on the
Morse/Long-range potential The Morse/Long-range potential (MLR potential) is an interatomic interaction model for the potential energy of a diatomic molecule. Due to the simplicity of the regular Morse potential (it only has three adjustable parameters), it is very limite ...
with his former student Nike Dattani of
Oxford University Oxford () is a city in England. It is the county town and only city of Oxfordshire. In 2020, its population was estimated at 151,584. It is north-west of London, south-east of Birmingham and north-east of Bristol. The city is home to the ...
was referred to as a "landmark in diatomic spectral analysis". In the landmark work, the C3 value for atomic
lithium Lithium (from el, λίθος, lithos, lit=stone) is a chemical element with the symbol Li and atomic number 3. It is a soft, silvery-white alkali metal. Under standard conditions, it is the least dense metal and the least dense solid el ...
was determined to a higher-precision than any atom's previously measured oscillator strength, by an order of magnitude. This lithium oscillator strength is related to the radiative lifetime of atomic lithium and is used as a benchmark for atomic clocks and measurements of fundamental constants.


Awards and Honors

* 1994
Rutherford Memorial Medal The Rutherford Memorial Medal is an award for research in the fields of physics and chemistry by the Royal Society of Canada. It was dedicated to the memory of Ernest Rutherford. It is awarded once for physics and once for chemistry each year, " ...
in Chemistry from the Royal Society of Canada * 1995 J. Heyrovsky Honorary Medal for Merit in the Chemical Sciences from the Academy of Sciences of the Czech Republic.


See also

* List of University of Waterloo people


References


External links


Robert J. LeRoy's homepage at University of Waterloo
{{DEFAULTSORT:Leroy, Robert J. 1943 births 2018 deaths People from Ottawa University of Toronto alumni University of Wisconsin–Madison alumni Canadian chemists Computational chemists