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Worthy daughter of illustrious scientists and her alchemical successes (Sep 12 is Irene Joliot-Curie s 120th birth anniversary)

Tuesday - September 12, 2017 4:28 pm , Category : SCIENCE & TECHNOLOGY

She discovered the missing part of the heart of matter but unfortunately didn t get the credit. Undeterred she went on to advance her illustrious scientist mother s contribution by recreating in the lab a key natural phenomenon thus achieving the long human quest to transform substances -- and laying the foundation for manipulating the atom s immense energy for purposes beneficial and destructive.



But our modern and successful alchemist Irene Joliot-Curie whose 120th birth anniversary is on Tuesday (Sep 12) was no ordinary person -- for no other woman or any man for that matter can match her scientific pedigree. There are couples or fathers-and-sons who have both got the Nobel Prize but she is the only one whose both parents Pierre and Marie Curie were laureates (her mother twice in different disciplines) before winning it herself with her husband Frederic -- who was initially her pupil. The Joliot-Curies were unlucky to miss winning the Nobel twice earlier for the couple had found proof of the neutron the missing component of atomic nuclei as well as the positron the electron s anti-particle counterpart thus proving the existence of anti-matter. However they failed to recognise the significance of their discoveries. Both the near misses however led them to discover artificial radioactivity. While it was known that a nucleus could be split into stable parts on being bombarded with a sufficiently powerful particle no one till the Joliot-Curies found out that "in certain circumstances an unstable element in the process of nuclear decay could be created" and elements forced to release their energy in the form of radioactive decay (as per Diana Preston in "Before the Fallout: From Marie Curie to Hiroshima"). This won them the Nobel Prize for Chemistry in 1935 and led to studies of fission of heavy metals with all its implications on human health and power generation -- as well for a whole range of destructive weapons. The eldest daughter of the famed Marie and Pierre Curie Irene was born in Paris on September 12 1897 and showed scientific aptitude early. When she was 10 years old she was put into "The Cooperative" -- for which Madame Curie teamed with some of France s most distinguished academics to teach at home each other s children a curriculum of both science and humanities. After two years she went back to traditional schooling but this was interrupted by World War I. During the conflict she helped her mother run her mobile field hospitals -- with primitive X-ray equipment which much helped doctors in locating shrapnel in wounded soldiers. However these led to both mother and daughter suffering large doses of radiation exposure. (This coupled with their literally "hands-on" approach to radioactive materials would eventually cause their deaths.) After the war she returned to Paris to study at the Radium Institute set up by her parents and completed her doctorate in 1925. She became her prematurely frail mother s closest collaborator and a model of the oblivious graceless scientist. "Now in her mid-twenties Irene was tall and sturdily built with a direct piercing sometimes disconcerting gaze. Einstein thought she had the characteristics of a grenadier. Other contemporaries recalled her as sometimes haughty and conscious of her status as Marie Curie s daughter and at other times very uncouth . She had little concern for appearances or convention happily hiking her skirts to rummage in her petticoat for a handkerchief to blow her nose " Preston writes. In 1924 Irene was asked to teach laboratory techniques to Frederic a young chemical engineer and went on to marry him in 1926. Hyphenating their surnames they also combined their research efforts on atomic nuclei. Missing out on the neutron and the positron they however achieved a place in the pantheon of science with the discovery of artificial radioactivity in 1934. But Irene despite her perceived lack of graces was not entirely oblivious of the world. She and her husband were aware of the dangers of fascism and spoke out against it while she also sought to promote science being appointed France s Undersecretary of State for Scientific Research in 1936. However the long exposure to radioactive substances finally caught up with her. Contacting TB she spent most of the Second World War convalescing in Switzerland. While she returned to both her political and scientific career after the war she was diagnosed with leukaemia to which she succumbed to in 1956. Continuing the tradition of the family s women her daughter Helene (born 1927) became a nuclear physicist (son Pierre b. 1932 became a biochemist). (Vikas Datta can be contacted at vikas.d@ians.in) --IANS vd/vm/sac