The ground state of 17Ne is unstable. Its half-life has been measured to be 109 ms. (a) What is the energy width of the state? (b) List two possible decay mechanisms.
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The ground state of 17Ne is unstable. Its half-life has been measured to be 109 ms.
(a) What is the energy width of the state?
(b) List two possible decay mechanisms.
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- All the elements in our solar system beyond iron are made in explosive stellar events. A simplifying assumption is that they are all made equally at the same moment. Knowing the half-life of 235U (currently 0.72% abundant here on Earth) is 7.4 ×10^8 years and the half-life for 238U (currently 99.27% abundant here on Earth) is 4.468 ×10^9 years, estimate the age of our solar system.Find the binding energy per nucleon in J and eV for the three following isotopes, given their atomic masses in u: 33 Si silicon 32.97800017 u ☐ × 10-12 J ☐ MeV 241 Es einsteinium 241.0685424 u 99 ×10−12 J☐MeV 170 oxygen 16.9991317012 u ×10-¹² J MeV mhydrogen = 1.007825 u mneutron 1.008664915 u -27 u = 1.6605 × 101 kg7 mi.. of. tr. J. 0.. J.. D. e.. 8 Al 32. A baryon is a hadron composed of THREE quarks. A neutron is a baryon with the following quark designation: cbb Oudd Duud Ouss 33. Which of the following decay equations describes beta positive decay? Ouududd +e++v Oudd uud+e++v Oudduud +e+v Ouududd +e+v Written Response 34. hp BB afe FA
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- Q.7 (b) The a-particle of energy 14 MeV incident on a Ni60 nucleus and form the compound nucleus Zn64 via the following reactions: He + Ni60 → Zn64 Calculate the excitation energy of Z64 relative to the ground state Zn64. (Given: M (Ni) = 59.930878u, M(Zn64) = 63.92914u and M(He) = 4.00260 amu.Hydrogen atoms are placed in an external magnetic field. The protons can make transitions between states in which the nuclear spin component is parallel and antiparallel to the field by absorbing or emitting a photon. What magnetic-field magnitude is required for this transition to be induced by photons with frequency 22.7 MHz?A nucleus with even-even nucleons in the ground state is subjected to alpha decay. Calculate the allowed values of total angular momentum ??, parity ?? and hence allowed states of ???? of the daughter nucleus