Radioactive Tracer Technique for Tool Wear Studies |
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Page 8
... atom but a large initial number of the radioactive atoms , then the fraction remaining unchanged after time t shall be N = e - λt , where N is the number of No unchanged atoms at time t . Radioactive Decay and Growth . Decay of a ...
... atom but a large initial number of the radioactive atoms , then the fraction remaining unchanged after time t shall be N = e - λt , where N is the number of No unchanged atoms at time t . Radioactive Decay and Growth . Decay of a ...
Page 9
... number of atoms to be reduced to half that number by transformations . Thus , at the time t = ty N = No / 2 and ln 2 = · or ty / = In 20.693 入 In practical work with radioactive materials the number of atoms N is not directly evaluated ...
... number of atoms to be reduced to half that number by transformations . Thus , at the time t = ty N = No / 2 and ln 2 = · or ty / = In 20.693 入 In practical work with radioactive materials the number of atoms N is not directly evaluated ...
Page 102
... number of atoms being formed , we can find the resulting activity from the following relation : A = 0.693 N = A N ΑΝ ty J Where A = Activity in disintegrations per sec . 102.
... number of atoms being formed , we can find the resulting activity from the following relation : A = 0.693 N = A N ΑΝ ty J Where A = Activity in disintegrations per sec . 102.
Common terms and phrases
ABSORBER absorption AISI alpha particles alpha rays atomic number autoradiographs Be⁹ beam beta and gamma beta particles bombarding particle charged particles chemical chips Colding and Erwall compton effect counts per minute cross section Curie curve cutting fluid cutting speed cutting tool decay detector determine disintegrations dose electrons element emitted emitters G G G gamma radiation gamma rays investigation ion pairs irradiation isotope kinetic energy krypton linear machining mass number material transfer mc/gm measured method neutron flux nuclear cross section nuclear radiation nuclear reactions nucleus number of atoms number of neutrons obtained percent photoelectric effect plot positrons protons PULSE HEIGHT radioactive tool radioisotopes reactor reference source relative tool scintillation counter shown in Figure specific activity specific ionization steel target technique thermal neutron tips tool life testing tool material tool wear studies tube tubular workpiece values wear land wear particles wear products wear rate