LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
M.Sc. DEGREE EXAMINATION – PHYSICS
SUPPLEMENTARY EXAMINATION – JUNE 2009
PH 4804 - NUCLEAR PHYSICS
Date & Time: 26/06/2009 / 10:00 - 1:00 Dept. No.
Max. : 100 Marks
SECTION -A
Answer all the questions.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
10 X 2 = 20 Marks.
How do the scattering experiments support the charge independent nature of the nuclear
forces?
What does the presence of finite nuclear quadrupole moment for deuteron imply?
Mention the various methods by which the atomic masses can be determined?
What are the basic components of a reactor?
When and where is the optical model used?
What are the basic assumptions of the continuum theory?
What are neutron stars?
How does the energy spectrum of the beta decay account for the neutrino hypothesis?
What is Isospin formalism?
Explain lepton number conservation with an example.
SECTION –B
Answer any four questions.
11.
12.
13.
14.
15.
4 x 7.5 = 30 Marks.
Assume a square potential well and obtain the range and depth of the potential well for the
deuteron.
How does the barrier penetration concept help to explain the process of nuclear fission?
Obtain an expression for nuclear reaction cross section in terms of phase shift
Describe the experiment to confirm the non-conservation of parity in beta decay.
Write a short note on different types of interactions in nature.
Answer any four questions.
SECTION – C
4 X 12.5 = 50 Marks.
16. Describe in detail the electron scattering method of determining the nuclear size.
17. Account for the existence of magic numbers based on shell model of nucleus taking account of
spin – orbit interaction.
18. Obtain the Briet-Wigner single level formula for resosnace scattering unong neutrons.
19. Explain Gamow’s theory of alpha decay.
20. Describe the quark model of baryons and mesons
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