3. (40 Total) Other Nuclear Systems A common approach to generating electricity for space voyagers is through heat generation from 238PuO2. These devices are typically called Radioisotope Thermoelectric Generator (RTG). Answer the following questions. (1) Explain what is the 'Seebeck effect', and what is the relationship to the 238PuO2 electricity generation. Be sure to include references and detail explanations. (7 points) (2) Assuming you have 4kg of 238PuO2 for assembling an RTG, how many particles does this sample generate per second? Be sure to list the reference for data required for your calculations. ( 10 points) (3) Assuming you have 20kg of 238PuO2 for assembling an RTG, is there anything you will need to pay attention to? And why? ( 3 points) (4) The particles generated from the 238PuO2 sample in (2) will potentially interact with the oxygen in 238PuO2 and generate neutrons through the (,n) reaction. The average energy level of particles from 238Pu decay is 5.593MeV. Assuming the oxygen isotope abundance is 16O(99.63%),17O(0.0375%), and 18O(0.1995) in atom percentages. Given the following figures for the particle (,n) interaction crosssection, calculate how many neutrons per second are generated from this sample in (2). (20 points) Note that the data is from this website: https://www.oecdnea.org/janisweb/book/alphas/O18/MT4/renderer/1335 You can do a visual or graphic selection on the particle cross