Hélène Langevin-Joliot

Hélène Langevin-Joliot (née Joliot-Curie; born 19 September 1927) is a French nuclear physicist known for her research on nuclear reactions in French laboratories and for being the granddaughter of Marie Skłodowska-Curie and Pierre Curie and the daughter of Irène Joliot-Curie and Frédéric Joliot-Curie, all four of whom have received Nobel Prizes, in Physics (Pierre and Marie Curie) or Chemistry (Marie Curie and the Joliot-Curies). Since retiring from a career in research Hélène has participated in activism centered around encouraging women and girls to participate in STEM fields. Her activism also revolves around promoting greater science literacy for the general public.

Early life and education Hélène Langevin-Joliot was born in Paris, France, on September 19, 1927. She developed a passion for science in her early life, seeing her parents Jean Frédéric Joliot-Curie and Irène Joliot-Curie win a Nobel Prize for Chemistry in 1935.

Career After receiving her doctorate, Langevin-Joliot went on to work for the CNRS as a researcher in 1949, mainly focusing on nuclear reactions. She eventually become the director of research at this institute in 1969 and continued to do research for CNRS until she retired in 1992. She also worked for the French government as a member of the Scientific Advisory Group of the Parliamentary Office of Scientific and Technological Options between 1985 and 1992 and as a member of the Commission for the Centennial Celebration of the Discovery of Radioactivity and Radio between 1996 and 1998. She is chairperson of the panel that awards the Marie Curie Excellence award, a prize given to outstanding European researchers. She was president of the French Rationalist Union from 2004 to 2012. In this position Langevin-Joliot participated in activism centered on science and technology by giving talks and presentation as well as writing articles for the Rationalist Union's reviews.

Activism Hélène Langevin-Joliot is also known for her work in encouraging women to join STEM fields through interviews and stories she tells of her mother and grandmother. She is encouraged by the increasing number of women within scientific fields and hopes more girls feel inspired by her family to pursue their passions in science. She has also done work in encouraging science literacy through her interviews and talks about her career and the career of her family.

Family

Langevin-Joliot comes from a family of well-known scientists. Her maternal grandparents were Marie and Pierre Curie, famous for their study of radioactivity, for which they won a Nobel Prize in physics with Henri Becquerel in 1903. Marie Curie was the first person to win Nobel Prizes in two different sciences (Linus Pauling was the second to do so); her second was awarded in chemistry in (1911) for her discoveries of radium and polonium. Her parents, Frédéric Joliot-Curie (born Jean Frédéric Joliot) (who was mentored by Marie) and Irène Joliot-Curie (born Irène Curie), won a Nobel Prize for chemistry in 1935 for their discovery of Induced radioactivity. Her brother Pierre Joliot is a noted biophysicist who has made contributions to the study of photosynthesis.

In response to her family's legacy, Langevin-Joliot regularly grants interviews and gives talks about their history. Her knowledge of her family's history led to her writing the introduction to Radiation and Modern Life: Fulfilling Marie Curie's Dream, including a brief history of the Curies.

Her husband, , was grandson of the famous physicist Paul Langevin (who had a relationship with the widowed Marie Curie, Hélène's grandmother, in 1910) and was also a nuclear physicist at the institute; her son, Yves (b. 1951), is an astrophysicist.

Selected works

Academic

"Sur un rayonnement γ de 121 keV obseryé dans une source de 147Pm de très grande pureté". Journal de Physique et le Radium 17, no. 6 (1956): 497-498. https://doi.org/10.1051/jphysrad:01956001706049700. "Contribution à l’étude des phénomènes de freinage interne et d’autoionisation associés à la désintégration β". Annales de Physique. Vol. 13. No. 2. 1957. https://doi.org/10.1051/anphys/195713020016. "Marie Curie and Her Time". Chemistry International 33.1 (2011): 4.

Literary

"Radiation And Modern Life: Fulfilling Marie Curie's Dream". 2004. "Marie Curie et ses filles. Lettres". 2011. "L'épopée de l'énergie nucléaire: Une histoire scientifique et industrielle". 2013. "Science et culture: Repères pour une culture scientifique commune". 2020. "Marie Curie, ma mère". 2022.

Articles

"Progrès scientifique et progrès : pour sortir de la confusion", Raison présente, vol. 194, no. 2, 2015, pp. 19-29.