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Determine the energy released when a Uranium-235 nucleus under fission to Te-134, Zr-99, and two neurons. A table of isotopes lists the binding energy per nucleon on the nuclei of U-235, Te-134, and Zr-99 as 7.69 MeV, 8.38MeV, and 8.54MeV, respectively.

Determine the energy released when a Uranium-235 nucleus under fission to Te-134, Zr-99, and two neurons. A table of isotopes lists the binding energy per nucleon on the nuclei of U-235, Te-134, and Zr-99 as 7.69 MeV, 8.38MeV, and 8.54MeV, respectively.

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Determine the energy released when a Uranium-235 nucleus under fission to Te-134, Zr-99, and two neurons. A table of isotopes lists the binding energy per nucleon on the nuclei of U-235, Te-134, and Zr-99 as 7.69 MeV, 8.38MeV, and 8.54MeV, respectively. 

University Physics for the Physical and Life Sciences, Volume 2 Page 1194 of 1240 Show N REFLECT This result is consistent with our earlier claim that a typical amount of energy released in the fission of 235U is around 200 MeV. Practice Problem 27-5 Determine the energy released when a 235U nucleus under- goes fission to 134TE, 99Z,, and two neutrons. A table of isotopes lists the binding energy per nucleon in the nuclei of 235U, 134TE, and 9Zr as 7.59 MeV, 8.38 MeV, and 8.54 MeV, respectively. All of the examples of fission reactions above result in the release of a small number of neutrons. Imagine what can happen if a large number of 235U atoms are close to each other. Should one nucleus be struck by a neutron and fission accord- ing to Equation 27-3, there would then be three neutrons moving through the uranium. Should each of these strike a 235U nucleus and start a fission process, there would be nine neutrons, so possibly nine more fissions. With a sufficient number of 235U atoms present, this chain reaction quickly grows, with an accompanying rapid increase in energy released. Isotopes that are capable of sustaining a fission chain reaction are used as nuclear fuels. Such isotopes are termed fissile; the most common fissile nuclear fuels are U, 235U, 239PU, and 241PU. The fission reactions they undergo are characterized by the production of, typically, two or three neutrons as well as larger fragments.
Transcribed Image Text:University Physics for the Physical and Life Sciences, Volume 2 Page 1194 of 1240 Show N REFLECT This result is consistent with our earlier claim that a typical amount of energy released in the fission of 235U is around 200 MeV. Practice Problem 27-5 Determine the energy released when a 235U nucleus under- goes fission to 134TE, 99Z,, and two neutrons. A table of isotopes lists the binding energy per nucleon in the nuclei of 235U, 134TE, and 9Zr as 7.59 MeV, 8.38 MeV, and 8.54 MeV, respectively. All of the examples of fission reactions above result in the release of a small number of neutrons. Imagine what can happen if a large number of 235U atoms are close to each other. Should one nucleus be struck by a neutron and fission accord- ing to Equation 27-3, there would then be three neutrons moving through the uranium. Should each of these strike a 235U nucleus and start a fission process, there would be nine neutrons, so possibly nine more fissions. With a sufficient number of 235U atoms present, this chain reaction quickly grows, with an accompanying rapid increase in energy released. Isotopes that are capable of sustaining a fission chain reaction are used as nuclear fuels. Such isotopes are termed fissile; the most common fissile nuclear fuels are U, 235U, 239PU, and 241PU. The fission reactions they undergo are characterized by the production of, typically, two or three neutrons as well as larger fragments.
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