NUCLEAR PHYSICS-II

Paper Code: 
PHY 422
Credits: 
04
Contact Hours: 
60.00
Max. Marks: 
100.00
Objective: 
  • To provide an understanding of static properties of nuclei, nuclear decay modes, nuclear force and nuclear models
  • To provide broad understanding of basic experimental nuclear detection techniques
  • To motivate the students to take up research in Nuclear Science.

                     Course

Learning outcome (at course level)

Learning and teaching strategies

Assessment Strategies

Paper Code

Paper Title

 

 

After the completion of this course the student will be able to:

 

CO 128: Know main aspects of the inadequacies of classical mechanics and understand historical development of quantum mechanics and ability to discuss and interpret experiments that reveal the dual nature of matter.

 

CO 129: Know about the nuclear models and their roles in explaining the ground state properties of the nucleus –(i) the liquid drop model, its justification so far as the nuclear properties are concerned, the semi-empirical mass formula, (ii) the shell model, evidence of shell structure, magic numbers, predictions of ground state spin and parity, theoretical deduction of the shell structure, consistency of the shell structure with the Pauli exclusion principles.

 

 

CO 130:  Learn collective description of nuclear behavior.

 

CO 131: Learn about the process of radioactivity, the radioactive decay law, the emission of alpha, beta and gamma rays, the properties of the constituents of these rays and the mechanisms of the emissions of these rays, outlines of Gamow’s theory of alpha decay and Pauli’s theory of beta decay with the neutrino hypothesis, the electron capture, the fine structure of alpha particle spectrum, the Geiger-Nuttall law, the radioactive series.

 

 

CO 132: Ability to calculate the decay rates and lifetime of radioactive decays like alpha, beta, gamma decay. Neutrinos and its properties and role in theory of beta decay.

 

CO 133: Know about the general characteristics of weak interaction.

 

 

CO 134:  Learn theories of Nuclear Reactions and nuclear structure studies with deuteron strapping.

 

Approach in teaching:

Interactive Lectures, Discussion, Tutorials, , Demonstration, Problem Solving.

 

 

 

 

 

 

 

 

 

 

 

Learning activities for the students:

Self learning assignments, Effective questions,  Seminar presentation, Solving numerical

Additional learning through online videos and MOOC courses

Class test, Semester end examinations, Quiz, Solving problems, Assignments, Presentations

 

13.00
Unit I: 
Nuclear Shell Mode

Single particle and collective motions in nuclei, Assumptions and justification of the shell model, average shell potential, spin orbit coupling, single particle wave functions and level sequence, magic numbers, shell model predictions for ground state parity, angular momentum, magnetic dipole and electric quadruple moments, and their comparisons with experimental data, configuration mixing, single particle transition probability according to the shell model, selection rules, approximate estimates for the transition probability and Weiss Kopf units, Nuclear isomerism. 

10.00
Unit II: 
Collective Nuclear Models

Collective variable to describe the cooperative modes of nuclear motion, Parameterization of nuclear surface, A brief description of the collective model Hamiltonian (in the quadratic approximation), Vibrational modes of a spherical nucleus, Collective modes of a deformed even-even nucleus and moments of inertia, Collective spectra and electromagnetic transition in even nuclei and comparison with experimental data, Nilsson model for the single particle states in deformed nuclei. 

10.00
Unit III: 
Nuclear Gamma and Beta decay

Electric and magnetic multipole moments and gamma decay probabilities in nuclear systems (no derivations), Reduced transition probability, Selection rules, Internal conversion and zero-zero transition.

13.00
Unit IV: 
General characteristics of weak interaction

nuclear beta decay and lepton capture, electron energy spectrum and Fermi-Curie plot, Fermi theory of beta decay (parity conserved selection rules Fermi and Gamow-Teller) for allowed transitions, ft-values, General interaction Hamiltonian for beta decay with parity conserving and non conserving terms; Forbidden transitions, Experimental verification of parity violation, The V-A interaction and experimental verification. 

14.00
Unit V: 
Nuclear Reactions

Theories of Nuclear Reactions, Partial wave analysis of reaction Cross section, Compound nucleus formation and breakup, Resonance scattering and reaction-Breit-Wigner dispersion formula for s-waves (1 = 0), continuum cross section, Statistical theory of nuclear reactions, evaporation probability and cross section for specific reactions, The optical model, Strapping and pick-up reactions and their simple theoretical description (Butler theory) using plane wave Born approximation (PWBA), Shortcomings of PWBA, Nuclear structure studies with deuteron strapping (d, p) reactions. 

References: 
  1. M.A. Preston and R.K. Bhaduri : Structure of Nucleus, Addision Wesley, 1975.
  2. R.R. Roy and B.P. It Nigam, Nuclear Physics, Wiley-Eastern. 1979.
  3. L.R.B. Elton: Introductory Nuclear Theory, ELeBS Pub. London, 1959.
  4. B.K. Agrawal : Nuclear Physics. Lokbharati Publt., Allahabad 1989.
  5. M.K. Pal-Nuclear Structure, Affiliated East-West Press, 1982.
  6. J.B. Blatt and V.F. Weisskopf-Theoretical. Nuclear Physics.
  7. H. Enge. : Introduction to Nuclear Physics, Addison - Wesley, 1970.
  8. B.L. Cohen-concept of Nuclear Physics, Tata McGraw Hill, 1988.
  9. W.E. Burchema - element of Nuclear Physics, ELBS, Longman, 1988.
  10. R.D. Evans : The Atomic Nucleus, Mc Graw Hill, 1955.
  11. E. Segre Nuclei and Particles, Benjamin, 1977.
  12. I. Kaplan-Nuclear Physics, Addison Wesley, 1963.
  13. W.M. Gibson : The physics of Nuclear Reactions, pergamon Press, 1980.
  14. G. de Beneditti, Nuclear Interactions. Wiley, 1955.

 

 

Academic Year: 
2019-2020
  • Printer-friendly version
  • PDF version