Explain which conservation law is violated in each of the the following decays (а) р —еt +т0 () и е+y
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Q: What is the daughter product of the a decay of Rn -198?
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Q: Which of the following reactions cannot occur? (Select all that apply.) γ + p → n + π0p + p → 2γπ+ +…
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Q: Calculate the Q-factor of the following decay process 77Kr⟶77Br +e+ +νe
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- Calculate the Q-factor of the following decay process 77 Kr 77 Br + e + ve Enter your answer in MeV to 2 decimal places Answer:99Mo beta decays with a half-life of 66 h to 99Tc*, an isotope that is widely used in medical imaging. The 99Mo itself is created in a nuclear reactor by bombarding 235U nuclei with neutrons. One particular 99Mo was created in this way 66 h ago, while another was created just now. Which nucleus is morelikely to decay in the next 66 h?A π0 of kinetic energy 720 MeV decays in flight into two γ rays of equal energies. Determine the angles of the γ rays from the incident π0 direction.
- The reaction 34S( p,n) 34 Cl has a threshold proton laboratory energy of 6.45 MeV. Calculate nonrelativistically the upper limit of the positron energy in the beta decay of 34Ck, given that the mass difference between the neutron and the hydrogen atom is 0.78MeV.If a Σ+ at rest decays into a proton and a p0, what is the total kinetic energy of the decay products?(a) In addition to uranium, plutonium is also a well-suited starting product for the release of energy through nuclear fission. If you bombard a ²32Pu nucleus with a neutron the fission products 94 barium ¹Ba and strontium 3Sr are formed. 56 (i) Write down the full equation of the reaction. (ii) Calculate the reaction energy in eV units. Note that m(232Pu) = 239.052162u, 94 m(¹Ba) = 143.922955u, and m(Sr) = 93.915356u. (iii) Explain what triggers a chain reaction with 232 Pu. 94
- The half-life of 198Au is 2.70 days. What is the decay constant of 198Au?Consider the potential induced fission reaction: n+ 239Pu 239Pu 94 94 240 Pu* 94 56 38 Sr+ 34 Sr + 142 Ba + 4n a) Determine the internal excitation energy of the 240 Pu* nucleus, 94 assuming negligible kinetic energy on the incoming neutron. b) Determine the net energy output of this reaction. c) Estimate the average energy of each of the output neutrons, and compare to the energy of a thermal neutron near room temperature.Determine the number of protons in the missing fragment of the reaction shown below: In+25U ?+135 Xe + 12n+ 126.5 MeV 54 Express your answer as an integer. Temptates Symbols undo rego Teset keyboard shortcuts tlelp Z =
- 4. 80Br can undergo all three types of 3 decay (B- decay, B+ decay, and electron capture). (a) Write down the decay equation in each case. (b) Compute the decay energy for each case.66/28Ni (mass = 65.929 1 u) undergoes beta decay to 56/29 (mass = 65.928 9 u). (a) Write the complete decay formula for this process. (b) Find the maximum kinetic energy of the emerging electrons.The decay constant for 198Au is 2.97 x 10-6 s-1. Calculate the half life.