Page 57 - CatalogNEP-PS

Motion of charged particle in non-uniform magnetic field: Spatial variation of the magnetic field:
Divergence term, Gradient and curvature term, Shear term, Equation of motion in the first-order
approximation, Average force over one gyration period: Parallel force, perpendicular force, total
average force, Gradient drift, Parallel acceleration of guiding center: Invariance of the orbital
magnetic moment and of the magnetic flux, Magnetic mirror effect, the longitudinal adiabatic
invariant, Curvature drift, Combined Gradient and curvature drift, Time varying E field, Time
varying B field, Adiabatic invariants.
UNIT 4 (10 Hours)

Degree of ionisation and Sahaionisation formula, Methods of plasma production: Classical
Townsend mechanism and electrical breakdown of gases, Streamer mechanism and micro
discharges, Electrical discharge (Arc discharge and glow discharge) Plasma diagnostics: High
frequency current measurement (Rogowski coil), magnetic probe, Electric probes: single
(Langumuir) probe, double probe, triple probe, emissive probe, Plasma spectroscopy (Line
radiation and continuum radiation)

*
Tutorial(15 Hours) one hour per week

SUGGUESTED READINGS:

1. F. F. Chen, Introduction to Plasma Physics and Controlled fusion (2/e), Springer,2009.
2. J. A. Bittencourt, Fundamentals of Plasma Physics (3/e), Springer, 2013.
3. N. A. Krall and A. W. Travelpiece, Principle of Plasma Physics, San
FranciscoPress,(1/e) 1986.
4. R. J. Goldston and P. H. Rutherford, Introduction to Plasma Physics, Institute ofPhysics
Publishing, (1/e) 1995.
5. Hans R. Griem, Principles of Plasma Spectroscopy, Cambridge UniversityPress,(1/e)
1997.
6. R. H. Huddlestone and S. L. Leonard, Plasma Diagnostic Techniques,
AcademicPress,(1/e) 1965.
7. I. H. Hutchinson, Principles of Plasma Diagnostics, Cambridge University Press(2/e),
2005.

Phys.417 Laser and Spectroscopy 3+1*

LEARNING OBJECTIVES:

The primary aim of this course is to:
 teach the students the nature of molecular spectra (rotational, vibrational, electronic and
Raman) of polyatomic molecules (including diatomic) classified on the basis of their
topological symmetry using group theoretical approach.
 The fundamentals and properties of laser as a spectroscopic light source will also be
taught.
 Students should be familiar with the applications of laser in various areas like defense,
communication, medical etc.

LEARNING OUTCOMES:

After completion of course, students will able to:
 learn to assign the point groups to polyatomic molecules (including diatomic) and to
predict the nature of their vibrational spectra depending on their symmetry using group
theoretical treatment. The complete picture of rotational, vibrational and electronic spectra
of polyatomic molecules will be comprehended.

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