Calculate the third component of isospin T3 for and
.
List any three major differences between low energy scattering and
scattering.
Explain and justify the observed deviations in magnetic dipole moment and quadrupole moment of deuteron.
See Answer → For the nuclear charge density , compute the charge form factor and the mean square charge radius
.
The mass defects for and
are
, and
respectively. Calculate the corresponding atomic mass.
Describe the various methods of creating point defects. Discuss the constructive (positive) effect of dislocations in materials.
See Answer →How do the interactions between the substrate and adsorbate atoms determine the growth mode of thin films? Describe the various modes of thin film growth.
See Answer →What is green compaction in powder processing? How is the porosity of compacted piece reduced?
See Answer →Given that the density of molten Ge is 5.60 g cm⁻³ calculate the amount of boron required to obtain 10 kg p-type Ge with dopant concentration of 10¹⁷ cm⁻³. Take density of boron = 2.34 g cm⁻³, atomic weight of boron = 10.811 and k₀ = 0.8.
See Answer →Explain the difference between chemical vapour deposition and physical vapour deposition. What are the requirements of a material to be used as a holder for the charge in a thermal evaporation system? Mention any three materials used for the purpose.
See Answer →With the help of appropriate diagrams describe the possible ways of accommodating the added alloying elements into a pure metal lattice for the following cases:
i) Limited solubility
ii) Good solubility.
See Answer →
Show that the root mean square crow-flight distance for neutrons from an infinite plane source in an infinite medium is .
Derive two-group diffusion equations for a critical homogeneous reactor in steady state.
See Answer →Common types of engineering materials are metals, ceramics, polymers and composites. Compare these four classes on the basis of their composition and any two properties. State one application of each type.
See Answer →State Fick's law. Discuss its importance in neutron transport /diffusion. Write the assumptions used to derive Fick's law and hence derive its expression.
See Answer →Starting with the general form of transport equation, obtain the diffusion equation$
What do you understand by constant cross-section approximation? Derive the steady state equation for a plane geometry. Also write the transport equation for a spherical geometry.
See Answer →Using the transport equation for a non-multiplying system and homogeneous assembly, derive the integral form of transport equation using the method of characteristics. What do you understand by "Optical path length" of the medium?
See Answer →What are (i) initial and boundary conditions, and (ii) Interface boundary conditions?
See Answer →