M.Sc. DEGREE EXAMINATION, APRIL 2016
Fourth Semester
Physics
NUCLEAR AND PARTICLE PHYSICS
(2011 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 2 20)
Answer all questions.
All questions carry equal marks.
1. What are mesons?
2. What is internal conversion?
3. Write out the shell configuration for 67
30ZN .
4. State the limitations of the shell model of nucleus.
5. Differentiate endoergic and exoergic reactions.
6. Complete the following reaction
32S α ————————
7. What is called differential cross section?
8. Why the study of p-p scattering is capable of much higher
accuracy then n-p scattering?
Sub. Code
521402
RW-10849
2
Wk 3
9. Write down Gellmann-Okubo mass formula.
10. Define strangeness quantum numbers.
Part B 5 25)
Answer all questions, choosing either or
All questions carry equal marks.
11. Define parity. Explain the violation of parity
conservation during process.
Or
Write a note on neutrino helicity.
12. Determine the ground state spin and parity of the
following nucleus
17
8O
11
5B .
Or
Write short notes on magnetic moments and
Schmidt lines.
13. State and explain the assumptions of the compound
nucleus hypothesis.
Or
Explain the ground state properties of deuteron.
14. Give the theory of resonances in scattering and
reaction cross-sections in nuclear reactions.
Or
Classify and explain the types of nuclear reactors.
RW-10849
3
Wk 3
15. Give an account of quark structure of mesons and
baryons.
Or
Which of the following reactions are allowed and
forbidden under the conservation of strangeness,
conservation of baryon number and conservation of
charge?
n
.
Part C 10 30)
Answer any three questions.
All questions carry equal marks.
16. Describe Fermis theory of beta decay and determine the
mass of the neutrino by Fermi-Kurie plot.
17. Describe Bohr-Wheeler's theory on nuclear fission. What
is the fissionability parameter and obtain the condition
for spontaneously fission?
18. Explain in detail the effective range theory of n-p
scattering at low energies.
19. Derive the four factor formula for a thermal nuclear
reactor.
20. Explain the baryon octet and baryon decuplet symmetry
scheme of elementary particle.