A neutron generator uses an α source, such as radium, tobombard beryllium, inducing the reaction4 He + 9Be → 12C + n . Such neutron sources are called RaBe sources, or PuBe sources if they use plutonium to get the α s. Calculate the energy output of the reaction in MeV.

By READING the N vs t graph shown below, determine No & the half-life. N (x10¹ atoms) 120 90. 60. 30. 1 2 3 4 5 6 7 8 9 10 t(y) No = half-life = atoms

One possible fission reaction is n +235U→ Sr+X+12'n, where X is unknown. What is the unknown 92 nucleus? Give answer in the proper nomenclature. 88

We have already studied the natural Radionuclides series decays. These series are named the uranium (U-238), actinium (U-235), thorium (Th-232), and neptunium (Np-237 ) series. Now, use the neutron activation to get the Transuranic (TRU) Radionuclides, then beta and alpha decay series to the end series stable daughter and determine if this daughter is natural or anthropogenic radionuclide.   Write the neutron activation reaction, Calculate the delta E Then use the alpha decay series to get the end series stable daughter. Use U-238 for the neutron activation, calculate delta E, and Egamma, then use the daughter to write the beta - decay, and finally use the second daughter for the alpha series decay to determine the end series stable isotope.

Part A Calculate (in MeV) the total binding energy for 40 Ar. Express your answer in mega-electron volts to four significant figures. ? MeV Submit Previous Answers Request Answer X Incorrect; Try Again; 7 attempts remaining Part B Calculate (in MeV) the binding energy per nucleon for 40 Ar. Express your answer in mega-electron volts to three significant figures. Ην ΑΣφ ? Var = MeV Submit Request Answer Part C Calculate (in MeV) the total binding energy for 40K. Express your answer in mega-electron volts to four significant figures. nνα ΑΣφ ? BK = MeV Submit Previous Answers Request 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.

The number of atoms in 1mg of radium is 2.66 * 1018  how to calculate the activity of a 1mg sample of radium ?