PPT-Nuclear Binding, Radioactivity

Sections 321 329 Physics 1161 Lecture 25 Radioactivity Spontaneous emission of radiation from the nucleus of an unstable isotope Marie Curie 1867 1934 Wilhelm Roentgen 1845 1923. For . B.Sc. Chemistry (General), Part- I. By. Dr. . Kakoli. . Banerjee. Department of Chemistry. Aims and Objectives. Definition of Radioactivity . Discovery of Radioactivity- The Pioneers. Cause of Radioactivity- Nuclear Instability. Pierre Curie was already a famous scientist before he married Marie Sklodowska in 1895.  This famous couple did not only find true love, they also discovered radium and polonium.  For their groundbreaking research in radioactivity, the couple were awarded the 1903 Nobel Prize in physics.  It was Marie Curie who coined the term "radioactivity", and in her honor, the 1910 Radiology Congress chose the curie as the basic unit of radioactivity.  Pierre died from being run over by a horse drawn wagon, but Marie continued their research, and was eventually awarded a second Nobel Prize, the 1911 prize for Chemistry.  She died in 1934, suffering from pernicious anemia which had undoubtedly been the result of years of radiation exposure.. Their Effect on Health, The Energy Field. and The Immune System. Dr. Donna M. Starita, DVM, Medical Intuitive. … And Effective Ways To Protect Yourself. Electromagnetism: The Phenomenon Associated With Electricity and Magnetism And Their Interactions With Each Other. radiation … radioactive material. What are they? . exposure … contamination. Are they the same?. Radioactivity. Spontaneous emission of radiation from the nucleus of an unstable isotope. Disintegration Decay. Fission and Fusion. A brief history…. 1919: Ernest Rutherford experimented with bombarding nitrogen gas molecules with alpha particles emitted from bismuth-214. Discovery: faster moving particles were produced, and these could travel farther than the alpha particles!. Fission produces highly radioactive isotopes. All of the highly radioactive materials on earth have been produced by fission.. Cs-137 (Cesium-137). Cs-137 is . produced by nuclear fission . for use in medical devices and gauges. . Their Effect on Health, The Energy Field. and The Immune System. Dr. Donna M. Starita, DVM, Medical Intuitive. … And Effective Ways To Protect Yourself. Electromagnetism: The Phenomenon Associated With Electricity and Magnetism And Their Interactions With Each Other. 24.1 Nuclear Radiation. 24.2 Radioactive Decay (includes decay rates & radiochemical dating). 24.3 Nuclear Reactions (Transmutation. Part only). 24.4 Applications & Effects of Nuclear Reactions (except for radiation dose and intensity/distance). – What is it?. All substance are made of . atoms. . These have . electrons. (e) around the outside, and a . nucleus. in the middle. The nucleus consists of . protons. (p) and . neutrons. (n), and is extremely small. (Atoms are almost entirely made of empty space. Nuclear Reactions , Transmutations , Fission and Fusion Nuclear reactions The first induced nuclear reaction was accomplished by none other than Australian physicist Ernest Rutherford, the same guy 24.1 Nuclear Radiation. 24.2 Radioactive Decay (includes decay rates & radiochemical dating). 24.3 Nuclear Reactions (Transmutation. Part only). 24.4 Applications & Effects of Nuclear Reactions (except for radiation dose and intensity/distance). A person working with radioisotopes wears protective clothing and gloves and stands behind a shield.. 2. Radioactive Isotopes. A . radioactive isotope . has an unstable nucleus. emits radiation to become more stable. VBC-612. Unit-1. P.G.. 16.10.2020. 28.10.2020. Nuclear receptors . are intracellular proteins expressed in the nucleus of a cell that have a binding site for a particular steroid molecule. . Nuclear receptors . measurements for decommissioning facilities P Fichet (1), C Mougel (1), I Desnoyers (2), P Sardini (3), H Word (4) (1) Den – Service d’Etudes Analytiques et de Réactivité des Surfaces (SEAR