Calculate the most probable velocities of neutrons in thermal equilibrium with their surrounding at the following temperatures. (a) 20 ?? and (b) 260 ???
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Calculate the most probable velocities of neutrons in thermal equilibrium with their surrounding at the following temperatures. (a) 20 ?? and (b) 260 ???
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- Estimate the probability that nuclear reactor-produced electronic antineutrino has an interaction with a proton when traversing the earth. Cross section for antineutrino interacting with a proton is 10-43 cm² , mean earth radius is 6.37x108 cm, and mean mass density of the Earth is 5.52 g/cm°. Use 10 decimal places for the answer. Hint: Approximate Earth as iron.Question B1 a) A nuclear power station delivers 1 GW of electricity for a year from uranium fission. Given that a single fission event delivers about 200 MeV of heat, estimate the number of atoms that underwent fission, their mass, and the loss of mass of the fuel elements.A beam of neutrons is incident from the left on a target that extends from x=0 to x=a. Derive an expression for the probability that a neutron in the beam will have its first collision in the second half of the target that is a in the region < xIn a controlled fusion reactor Deuterium-Tritium The temperature of the plasma is T = 10 keV, where k is the k Boltzmann constant. The ions' number density is 2.6×10¹8 m-3. -22 3 Moreover (ov) = 10-²²m³s-¹, where o is the reaction cross-section, v is the relative speed of the reacting particles, and represents averaging according to the Maxwell- Boltzmann distribution. fusion is occurring. For what value of the confinement time does the reactor achieve the break even point? Enter your answer in seconds to 1 decimal point.The electric power generated by a single average size nuclear reactor block is between 400 and 800 MW. The fission of one 235U nucleus generates 185 MeV energy on average. What is the total mass of the fuel rods ſoaded into a 630 MW reactor for a one year period, if the fuel rods contain 5.50 percent of 235U? Assume that the overáll thermodýnamic efficiency of converting heat to electric energy is 37.0 percent.Two monoenergetic neutron beams of intensities I1=2x1010 neutrons/cm2.s and I1=1x1010 neutrons/cm2.s intersect at an angle of 30o. Calculate the neutron flux and current in the region where they intersect.Estimate the probability that nuclear reactor-produced electronic antineutrino has an interaction with a proton when traversing the earth. Cross section for antineutrino interacting with a proton is 10 43 cm2, mean earth radius is 6.37x108 cm, and mean mass density of the Earth is 5.52 g/cm. Use 10 decimal places for the answer. Hint: Approximate Earth as iron. Your Answer: AnswerHow many particles are present in a closed container if the energy it contains is 98998.19J, and the diatomic oxygen gas is moving at a velocity of 26.52m/s? Use only the whole number for the value of atomic mass unit. Express your answer in proper scientific notation.The cross section for neutrons of energy 10 eV being captured by silver (p = 10.5 g/cm3) is 17 barns. What is the probability of a neutron being captured as it passes through a layer of silver 2 mm thick?Most of the energy released in the collapse of a massive star to a neutron star (a core collapse supernova) is in the form of neutrinos. If the just-formed neutron star has a mass M = 1.4M⊙ and a radius R = 10 km, estimate the mean nucleon density, in cm−3. Find the mean free path, in cm, of a neutrino inside the neutron star, assuming the density you found and a cross section for scattering of neutrinos on neutrons of σνn = 10−42 cm2.A beam of neutrons is incident from the left on a target that extends from x=0 to x=a. Derive an expression for the probability that a neutron in the beam will have its first collision in the second half of the target that is in the region a/2A swimming pool reactor produces a flux of 3x1016 thermal neutrons m-2 s-1 at 1 m from the reactor center. Assuming a parallel beam of neutrons diffusing up to the surface of the pool where the neutron flux is measured to be 108 m -2 s-1. Calculate the thickness ( x m) of the water layer required. For thermal neutrons the flux is reduced exponentially with the experiment x L-1 where L is the diffusion length ( 2.75 cm in H2O).SEE MORE QUESTIONS