Division of Physical and Mathematical Sciences
Recent Submissions
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Investigations on nuclear pulse-height analysis with applications to studies of radioactive minerals
Abstract not available -
Cosmic noise studies in relation to ionospheric absorption and solar activity
Abstract not available -
Solid state NMR methods for the study of oriented systems : New techniques and applications
Nuclear Magnetic Resonance was first observed in 1946 by two independent groups; Purcell et al. at Harvard University and Bloch et al. at Stanford University. Since then, NMR spectroscopy has made such phenomenal progress ... -
Scaling and universality in driven systems : the sandpile model and the GOY shell model of turbulence
In spite of their simplicity, sandpile models have proved to be very useful for studying (a) SOC in model systems and (b) nonequilibrium steady states in driven systems. As we have mentioned in the brief overview given ... -
Density functional and computer simulation studies of colloidal suspensions
Colloidal suspensions of polyballs (polystyrene spheres) are good model systems for the study of both structural and dynamical properties of solids and liquids because the pair-wise interaction between the colloidal particles ... -
Interaction of hydrogen isotopes with radiation effects in metals
The present work has highlighted the deuterium behaviour during implantation in Cu, Ti and Pd, particularly relating to its migration, trapping and deuteride formation. The technique of neutron?yield measurement during ... -
Studies in the density functional theory of freezing: relative stability of FCC & BCC structures
In this chapter we have developed a minimisation technique which has been demonstrated to yield excellent results for realistic systems. The technique is particularly useful and necessary for non?close?packed structures ... -
Physics of Si-Related DX center in AlxGa1-xAs and GaAs
The existence of the two energy levels associated with the Si?related DX center in Al?Ga???As, besides alloy broadening effect and motion of substitutional donor during emission of electrons, has been established conclusively. ... -
Electrical and spectroscopic investigations of phase transitions in ferroelectric TAAP and DTAAP
(1) TAAP and DTAAP show pronounced anomalies in dielectric constant at TcT_cTc? and follow Curie–Weiss law in both ferro? and paraelectric phases. (2) The dielectric constant and coercive field values of TAAP depend on the ... -
NMR study of molecular dynamics and phase transition in selenates & plumbates of R2 MX6 family
The study of molecular dynamics in selenates and plumbates of the R?MX? family has revealed a few interesting features, like the small?angle torsional oscillations of the whole ion, a number of phase transitions and the ... -
Nuclear magnetic resonance investigations of certain protonic conductors.
Ionic motion in the hydrate of ammonium ferrocyanide has been investigated by high?pressure wide?line NMR, high?resolution NMR and conductivity techniques. In the high?pressure NMR study, the room?temperature proton NMR ... -
Fluorescence of Manganese in mixed sulphate glasses and Crystalline medium.
The observed fluorescence decay of Mn²? in potassium sulphate–zinc sulphate glass is of single exponential at low (3 mole %) and high concentrations (12 mole %) of manganese. At higher concentrations of manganese, concentration ... -
Theoretical study of quantum ohmic transport and resistance fluctuation in disordered conductors.
Abstract not available -
Studies on critical phenomena in fluid systems
The coexistence curve measurement of this binary liquid mixture was undertaken mainly because of its very low gravity?affected region. Also, the determination of Tc and the critical concentration are necessary for any ... -
Pulsed NMR instrumentation and investigations in certain hydrazinium compounds
Though the variable?frequency pulsed NMR spectrometer constructed by the author is working satisfactorily, some improvements can also be done. The present probe circuit is not a wide?band one and has to be tuned at different ...
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