PPT-High Precision Decay Data for Medical Isotopes

Decay Data and Medical I sotopes Essential for determining Overall dose Specific dose Imaging background Production cross section Over half were last studied gt30 years ago 30 Years ago 12 small detectors. 1 02 03 04 05 06 07 08 09 1 Measured Value of x Fraction of Total Measurements SD 01 SD 02 SD 03 brPage 5br mean standard deviation histogram Figure 3 Mass of Unknown Sample 102 104 106 108 11 112 114 116 118 12 Mass kg of Measurements brPage 6br precision measurements: what do they provide?. precision experiments part of large facilities. precision experiments with neutrons. Precision experiments. Electroweak precision experiments. proton decay measurements. at NPL. Paddy Regan. NPL . Radioactivity Group, AIR Division. & . Department of Physics, . University . of Surrey. Nuclear Data?. ‘Nuclear Data’ and its evaluation underpin many areas of both applied and fundamental nuclear science, including. Jasmine . Sudhu. 5/30/13. Chemistry 10.. What are Isotopes?. Isotope – Is the average mass of atoms. You round of the atomic mass to the nearest whole numbers to get your two possible Isotopes.. Example – Boron- Atomic mass = 10.81. After rounding to the closet two whole numbers which are 10 and 11, your . Define: . Accuracy. Precision. Draw & . Label. 4 dart boards to illustrate:. . (. each board should contain . 4 marks. ). High Accuracy, High Precision. High Accuracy, Low Precision. Low Accuracy, High Precision.  . The decay rate.  . Lorentz Invariant Phase Space. The decay rate.  . The decay rate.  . Decay amplitude. Describes the interactions during the decay.. The Feynman diagrams. The Feynman diagrams. Lecture 9. Absolute Dating of the Earth. Major Concepts. The discovery of radioactivity in the early 1900’s and the recognition that . radioactive decay . (a statistical event) occurs at a constant average rate for particular unstable isotopes has provided a means of determining the absolute ages of earth materials. Ian Gauld. Marco Pigni. Reactor and Nuclear Systems Division. May 2, 2013. Nuclear decay data from an end-user perspective.. Evaluated decay data have major importance to areas of reactor safety and nuclear fuel cycle analysis. Unscramble the following keywords for today’s lesson:. . Yecad. Iriaovadect. Ootspei. Nsteruon. nadgit. Isotopes . When the nucleus of an atom possesses either too many or too few neutrons compared to the number of protons it becomes unstable. These are called radioactive isotopes. Unstable nuclei split up in a process called radioactive decay and emit radioactive radiation.. FIGURE 01: Simple Bohr-type model of a lithium atom. Radioactive Isotopes. Unstable isotopes decay to other nuclides. The rate of decay is constant, and not affected by P, T, X…. Parent. nuclide = . What number equals the number of protons?. Atomic Number. From the periodic table – . How is the mass of a “regular” (most abundant) atom determined?. Protons Neutrons = Atomic Mass. An Isotope is defined as…. -. with a special view on the need for ISOLDE and other big science facilities. Mikael Jensen. Professor , Applied Nuclear Physics. Hevesy Lab - . Risø. - . Risø. -DTU Campus. Technical University of Denmark . Atoms of the same element . can. have different . mass numbers.. Isotopes. How can atoms of the same element end up with a different mass?. Shoulder Partners. Frederick Soddy. (1877-1956) proposed the idea of isotopes in 1912. isotopes”, IAEA Research Contract no. 17442/2012. Aurelian LUCA. ,. National Institute of Physics and Nuclear Engineering “. Horia. . Hulubei. ” (IFIN-HH), Department of Radioisotopes and Radiation Metrology, Radionuclide Metrology Laboratory, Romania.