12 O Consider the fission of 238U by fast neutrons. In onefission event, no neutrons are emitted and the final stable endproducts, after the beta decay of the primary fission fragments, are14Ce and "Ru. (a) What is the total of the beta-decay events in thetwo beta-decay chains? (b) Calculate Q for this fission process.The relevant atomic and particle masses are238U 238.050 79 u140Ce 139.905 43 u"Ru 98.905 94 u1.008 66 u

a) Let N be the number of beta decays, then the reaction can be written as, Hence the possible…

Answered: 12 O Consider the fission of 238U by…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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I-135 is a fission product that decays into Xe-135 in a reactor during operation. Write the Q value for this decay, and solve the decay equations starting with 10,000 atoms of I-135. Show the destruction of I-135 and creation of Xe-135 over a 48-hour period.
A 200 MW fission reactor consumes half its fuel in 3.00 y. How much 235U did it contain initially? Assume that all the energy generated arises from the fission of 235U and that this nuclide is consumed only by the fission process.
An unstable isotope of cobalt, 60Co, has one more neutron in its nucleus than the stable 59Co and is a beta emitter with a half-life of 5.30 years. This isotope is widely used in medicine. A certain radiation source in a hospital contains 4.20×10−2g of 60Co A) What is the decay constant for that isotope? Express your answer with the appropriate units. B) How many atoms are in the source? C) How many decays occur per second? Express your answer as a number of decays per second. D) What is the activity of the source, in curies? Express your answer in curies.
Neglecting leakage of neutrons, determine the time during which will occur nuclear fission of 1 kg 235U, if the fission starts with one neutron. The multiplication factor is k = 1.001, and lifetime of one generation of neutrons t = 1-10-6 s.
A proposed nuclear reactor facility will have an electrical power output of 908 MW with a 31.3% efficiency in converting nuclear to electrical power. Assuming the average fission reaction produces 234 MeV, how many reactions will take place at the facility every second?
Another series of nuclear reactions that can produce energy in the interior of stars is the cycle described below. This cycle is most efficient when the central temperature in a star is above 1.6 × 107 K. Because the temperature at the center of the Sun is only 1.5 × 107 K, the following cycle produces less than 10% of the Sun’s energy. (a) A high-energy proton is absorbed by 12 C. Another nucleus, A , is produced in the reaction, along with a gamma ray. Identify nucleus A decays through positron emission to form nucleus B. (c) Nucleus B absorbs a proton to produce nucleus C and a gamma ray. Identify nucleus C absorbs a proton to produce nucleus D and a gamma ray. Identify nucleus D. (e) Nucleus D decays through positron emission to produce nucleus E. Identify nucleus E. (f) Nucleus E absorbs a proton to produce nucleus F plus an alpha particle. What is nucleus F ? Note: If nucleus F is not 12C—that is, the nucleus you started with—you have made an error and should review the sequence…
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 place
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A large power reactor that has been in operation for some months is turned off, but residual activity in the core still produces 150 MW of power. If the average energy per decay of the fission products is 0.96 MeV, what is the core activity in units of curies?
If the average energy released in a fission event is 208 MeV, find the total number of fission events required to operate a 60-W lightbulb for 2.0 h.
Naturally occurring 40K is listed as responsible for 16 mrem/y of background radiation. Calculate the mass of 40K that must be inside the 55-kg body of a woman to produce this dose. Each 40K decay emits a 1.32-MeV β , and 50% of the energy is absorbed inside the body.

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