This experiment will use a technique known as neutron activation analysis (NAA) to determine the half-lives of two unusual isotopes, 28 Al and 20F. The only stable isotopes of these elements are 27 Al and 19F. Trace amounts of 26 Al and 18F occur naturally, but the isotopes we will generate today are even more unstable and have no significant natural abundance. To produce these very unstable isotopes in measurable concentration, samples containing Al and F are placed next to a source of energetic neutrons. A number of neutron sources can be used; in this lab the samples are placed inside an operating nuclear reactor that emits energetic neutrons. This source has the advantage of a high neutron output that creates the desired isotopes rapidly and at higher concentrations, but it is only feasible for researchers that have access to nuclear reactors. At Oregon State University, the campus TRIGA reactor is set up for NAA experiments. SECTION 2 Based on the description from the last section, how many neutrons are present in the nucleus of a 20p isotope? # of Neutrons in 20F

This experiment will use a technique known as neutron activation analysis (NAA) to determine the half-lives of two unusual isotopes, 28 Al and 20F. The only stable isotopes of these elements are 27 Al and 19F. Trace amounts of 26 Al and 18F occur naturally, but the isotopes we will generate today are even more unstable and have no significant natural abundance. To produce these very unstable isotopes in measurable concentration, samples containing Al and F are placed next to a source of energetic neutrons. A number of neutron sources can be used; in this lab the samples are placed inside an operating nuclear reactor that emits energetic neutrons. This source has the advantage of a high neutron output that creates the desired isotopes rapidly and at higher concentrations, but it is only feasible for researchers that have access to nuclear reactors. At Oregon State University, the campus TRIGA reactor is set up for NAA experiments. SECTION 2 Based on the description from the last section, how many neutrons are present in the nucleus of a 20p isotope? # of Neutrons in 20F

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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