Question: Clara Lieber worked with the German chemist in the fields of what two disciplines?

full_context: Document 1: Enrico Fermi: Enrico Fermi ( ; ] ; 29 September 1901 – 28 November 1954) was an Italian physicist and the creator of the world's first nuclear reactor, the Chicago Pile-1. He has been called the "architect of the nuclear age" and the "architect of the atomic bomb". He was one of the very few physicists in history to excel both theoretically and experimentally. Fermi held several patents related to the use of nuclear power, and was awarded the 1938 Nobel Prize in Physics for his work on induced radioactivity by neutron bombardment and the discovery of transuranic elements. He made significant contributions to the development of quantum theory, nuclear and particle physics, and statistical mechanics.
Document 2: Arthur Wahl: Arthur Charles Wahl (September 8, 1917 – March 6, 2006) was an American chemist who, as a doctoral student of Glenn T. Seaborg at the University of California, Berkeley, first isolated plutonium in February 1941. He also worked on the Manhattan Project.
Document 3: Chien-Shiung Wu: Chien-Shiung Wu (; May 31, 1912 – February 16, 1997) was a Chinese-American experimental physicist who made significant contributions in the field of nuclear physics. Wu worked on the Manhattan Project, where she helped develop the process for separating uranium metal into uranium-235 and uranium-238 isotopes by gaseous diffusion. She is best known for conducting the Wu experiment, which contradicted the hypothetical law of conservation of parity. This discovery resulted in her colleagues Tsung-Dao Lee and Chen-Ning Yang winning the 1957 Nobel Prize in physics, and also earned Wu the inaugural Wolf Prize in Physics a mere two decades later in 1978. Her expertise in experimental physics evoked comparisons to Marie Curie. Her nicknames include "the First Lady of Physics", "the Chinese Madame Curie", and the "Queen of Nuclear Research".
Document 4: Clara Lieber: Clara Lieber (July 10, 1902 – December 14, 1982) was an American chemist known for her work with Otto Hahn on discovering fission, and her discovery of several isotopes of strontium and barium.
Document 5: Clara Immerwahr: Clara Immerwahr (21 June 1870 – 2 May 1915) was a German chemist of Jewish descent. She was the first woman to be awarded a doctorate in chemistry in Germany, and is credited with being a pacifist as well as a women's rights activist. From 1901 until her suicide in 1915, she was married to the Nobel Prize-winning chemist Fritz Haber.
Document 6: Harold Urey: Harold Clayton Urey (April 29, 1893 – January 5, 1981) was an American physical chemist whose pioneering work on isotopes earned him the Nobel Prize in Chemistry in 1934 for the discovery of deuterium. He played a significant role in the development of the atom bomb, but may be most prominent for his contribution to theories on the development of organic life from non-living matter.
Document 7: Fritz Haber: Fritz Haber (] ; 9 December 1868 – 29 January 1934) was a German chemist who received the Nobel Prize in Chemistry in 1918 for his invention of the Haber–Bosch process, a method used in industry to synthesize ammonia from nitrogen gas and hydrogen gas. This invention is of importance for the large-scale synthesis of fertilizers and explosives. The food production for half the world's current population depends on this method for producing nitrogen fertilizers. Haber, along with Max Born, proposed the Born–Haber cycle as a method for evaluating the lattice energy of an ionic solid.
Document 8: Otto Haxel: Otto Haxel (2 April 1909, in Neu-Ulm – 26 February 1998, in Heidelberg) was a German nuclear physicist. During World War II, he worked on the German nuclear energy project. After the war, he was on the staff of the Max Planck Institute for Physics in Göttingen. From 1950 to 1974, he was an ordinarius professor of physics at the University of Heidelberg, where he fostered the use of nuclear physics in environmental physics; this led to the founding of the Institute of Environmental Physics in 1975. During 1956 and 1957, he was a member of the Nuclear Physics Working Group of the German Atomic Energy Commission. From 1970 to 1975, he was the Scientific and Technical Managing Director of the Karlsruhe Research Center.
Document 9: Einstein's Gift: Einstein's Gift is a play written by Canadian playwright Vern Thiessen in 2003. Through the recollections of Albert Einstein, the play focuses on the life and career of German chemist Dr. Fritz Haber, who helped improve living conditions with his work on nitrogen fixation. His work was later used by the German army to produce chlorine gas used in Second Battle of Ypres in the First World War. As Dr. Haber becomes increasingly involved with the German army, the play depicts how his actions and newly forged military connections affect his relationship with his wife, Clara, and his assistant, Otto. As his passion in science intertwines with nationalistic pride, Haber manifested himself a scientist devoted to a country that never accepted his Jewish origin.
Document 10: Lise Meitner: Lise Meitner ( ; 7 November 1878 – 27 October 1968) was an Austrian-Swedish physicist who worked on radioactivity and nuclear physics. Otto Hahn and Meitner led the small group of scientists who first discovered nuclear fission of uranium when it absorbed an extra neutron; the results were published in early 1939. Meitner and Otto Frisch understood that the fission process, which splits the atomic nucleus of uranium into two smaller nuclei, must be accompanied by an enormous release of energy. This process is the basis of the nuclear weapons that were developed in the U.S. during World War II and used against Japan in 1945. Nuclear fission is also the process exploited by nuclear reactors to generate electricity.
Document 11: Karl Lintner: Karl Lintner (1917 - 11.2.2015) is an Austrian nuclear physicist. During World War II, he worked on the German nuclear energy project, also known as the Uranium Club; he did research on the inelastic dispersion of fast neutrons in uranium. After the war, he taught and did nuclear research at the University of Vienna. He was a full member of the Austrian Academy of Sciences.
Document 12: Ernest Lawrence: Ernest Orlando Lawrence (August 8, 1901 – August 27, 1958) was a pioneering American nuclear scientist and winner of the Nobel Prize in Physics in 1939 for his invention of the cyclotron. He is known for his work on uranium-isotope separation for the Manhattan Project, as well as for founding the Lawrence Berkeley National Laboratory and the Lawrence Livermore National Laboratory.
Document 13: Iodine-131: Iodine-131 (I) is an important radioisotope of iodine discovered by Glenn Seaborg and John Livingood in 1938 at the University of California, Berkeley. It has a radioactive decay half-life of about eight days. It is associated with nuclear energy, medical diagnostic and treatment procedures, and natural gas production. It also plays a major role as a radioactive isotope present in nuclear fission products, and was a significant contributor to the health hazards from open-air atomic bomb testing in the 1950s, and from the Chernobyl disaster, as well as being a large fraction of the contamination hazard in the first weeks in the Fukushima nuclear crisis. This is because I-131 is a major fission product of uranium and plutonium, comprising nearly 3% of the total products of fission (by weight). See fission product yield for a comparison with other radioactive fission products. I-131 is also a major fission product of uranium-233, produced from thorium.
Document 14: Lawrencium: Lawrencium is a synthetic chemical element with symbol Lr (formerly Lw) and atomic number 103. It is named in honor of Ernest Lawrence, inventor of the cyclotron, a device that was used to discover many artificial radioactive elements. A radioactive metal, lawrencium is the eleventh transuranic element and is also the final member of the actinide series. Like all elements with atomic number over 100, lawrencium can only be produced in particle accelerators by bombarding lighter elements with charged particles. Twelve isotopes of lawrencium are currently known; the most stable is Lr with a half-life of 11 hours, but the shorter-lived Lr (half-life 2.7 minutes) is most commonly used in chemistry because it can be produced on a larger scale.
Document 15: Otto Hahn: Otto Hahn, {'1': ", '2': ", '3': ", '4': "} , {'1': ", '2': ", '3': 'ForMemRS', '4': "} (8 March 1879 – 28 July 1968) was a German chemist and pioneer in the fields of radioactivity and radiochemistry. He was exclusively awarded the Nobel Prize in Chemistry in 1944 for the discovery and the radiochemical proof of nuclear fission. He is referred to as the father of nuclear chemistry.
ground_truth: radioactivity and radiochemistry