A beam of 7.33-MeV protons is incident on a target of Al. Those that collide produce the reaction P+Al-Si+n Ignoring any recoil of the product nucleus, determine the kinetic energy of the emerging neutrons. (Al has mass 26.981539 u and Si has mass 26.986705 u.) x ingin? Mall
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- Fusion bombs use neutrons from their fission trigger tocreate tritium fuel in the reaction n +6 Li →3 H +4 He .What is the energy released by this reaction in MeV?Consider the following a-decay of the Uranium nucleus 236 U → 332Th + a. 90 (a) Show how the mass number (Aa) and atomic number (Za) of the alpha particle are obtained from this equation. (b) Calculate the Q-value (Qa) of the reaction. (c) Calculate the speed va = √2MQ of the alpha particle after it has been ejected from the parent nucleus, in terms of the speed of light c. M = -, mp and ma are the atomic masses (ma+mp) x ma mp of the daugher nucleus and the alpha particle, respectively. (d) Calculate the classical turning radius Re= 2Zpe²/Qa, where Zp is the atomic number of the daughter nucleus, and e² = 1.44 MeV. fm. (e) Calculate the decay probability Pa that the alpha particle will tunnel through the barrier. HINT: In calculating the probability, use the fact that ħc=197.327 MeV fm. The formula to use is given on page 5.What is the nuclear equation for 2Pu (alpha decay) wwwwwww 244PU 242 90 1) 244 Pu → 24QU + ¿He 92 248 c. 2Pu -> 94 244Pu → 246TH + ZHe 94 90
- A beam of 6.76 MeV protons is incident on a target of 2713Al. Those that collide produce the following reaction. p + 2713Al 2714Si +1 + n (Neutral 2714Si has mass 26.986705 u.) Ignoring any recoil of the product nucleus, determine the kinetic energy of the emerging neutrons. answer in MeV(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. 94A beam of 8.47-MeV protons is incident on a target of 27/13 Al. Those protons that collide produce the reaction shown below. p + 27 13 Al → 27 14 Si + n ( 27 14 Si has a mass of 26.986721 u.) Neglecting any recoil of the product nucleus, determine the kinetic energy of the emerging neutrons. Answer:_____MeV Sorry the formatting is kinda off, im not sure how to fix it. Thank you!
- 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.Neutron probes are used in agronomy to measure the moisture content of soil. A pellet of 241 Am emits alpha particles that cause a beryllium disk to emit neutrons. These neutrons move out into the soil where they are reflected back into the probe by the hydrogen nuclei in water. The neutron count is thus indicative of the moisture content near the probe. What is the energy of the alpha particle emitted by the 241^Am? Answer in megaelectron voltsConsider the fission reaction 141 n + U -> 235, 92U syXe + 92 38Sr +3n The masses of the components are 235 235.04393 세 xe| 140.여 2678 92 5 91.911 038 n 1.00 866 U Find the energy released in MeV Use the editor to format your answer
- Technetium has not been found in nature. It can be obtained readily as a product of uranium fission in nuclear power plants, however, and is now produced in quantities of many kilograms per year. One medical use relies on the tendency of 99mTc (an excited nuclear state of 99Tc) to concentrate in abnormal heart tissue. Calculate the total activity (in disintegrations per second) caused by the decay of 1.0 mg of 99mTc, which has a half-life of 6.0 hours.Each fusion reaction of deuterium (2H) and tritium (3H) releases about 20.0 MeV. The molar mass of tritium is approximately 3.02 g. What mass m of tritium is needed to create 1012 J of energy, the same as that released by exploding 250 tons of TNT? Assume that an endless supply of deuterium is available.