How is tritium formed from cosmic radiation? Calculate the minimum projectile energy necessary for this reaction to proceed in good yield
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- For a fusion reaction, at which temperature T do you expect the optimal reaction rate to approximately occur? In the expressions below EG is the Gamow energy of the reaction and k is the Boltzmann constant. Select one: O a. T O b. T: O c. T d. T = Oe. T - - = = EG 100k 10EG k EG 10k EG k 100 EG kA sample of hypothetical element X decays by positron emission and has a half-life of 79 years. How many years are necessary for a sample of this radioisotope to be reduced by 79%? Answer to the nearest year.In the following Nuclear reaction, what are the unknown components? What is A and Z?
- 5 Answer the following questions: a) For a homogeneous nucleation process, sketch the dependence of the surface and bulk free energies on the radius of a spherical embryo using the equation below. kT AG, = 4rv*y -* inS V, AG > r b) Sketch the dependence of the free energy changes (AG,) on the radius of a spherical embryo when the supersaturation ratio (S) is greater than 1, equal to 1 and less than 1. AG c) Discuss the importance of supersaturation on precipitationIn the figure below, note that for low Z, all the nucleii with the most highest binding energy per nucleon have both an even number of protons and an even number of neutrons. Explain why this is. 9 soFe 9%Mo 160 8. 144N. 183W He 20sPb "Be 235U 6. Fusion reactions release energy Fission reactions release energy 1 40 80 120 160 200 240 Atomic Mass Number (A) Use the editor to format your answer E (MeV)please write given, reasoning, and steps
- How do you solve this?(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. 94Complete the following nuclear reaction and identify the missing clement (use periodic tablc) 238U » He+? (1) 92
- 239 239Pu can be bombarded by a neutron and undergo nuclear fission to make an atom of 204 Au and an atom of 3lp. Write the balanced nuclear equation for the process. Make sure to show how many neutrons are given off by this reaction. Include the FULL isotope notation for ALL species involved.Consider the fission reaction see image After having found the missing nuclide, calculate the Q-value of the reaction. Enter your result in MeV to 1 decimal place1) Complete the reaction: 242Am + ? n → 90Sr + 149La + 4n a) n b) 2n c) 3n d) 4n e) 5n 2) Calculate the energy (in MeV) released in the nuclear fission reaction. The atomic masses are 242Am = 242.059549 u, 90Sr = 89.9077387 u, and 149La = 148.934733 u. (Express your answer to six significant figures).