Problems & Prospects of Ferromanganese industry in India

This paper deals with the trend of production and export of ferro-manganese in the country with reference to steel production. The various problems encountered by this indu-stry, such as deterioration in the quality of raw mater-ials, their price rise, shortage of power with its high tariff and non-utilisation of installed capacity have been discussed in detail. Attention has also been drawn to some of the commercial points related to rise in excise duty, railway freight, decline in sales and export. The prospect of Fe-Mn industry vis-a-vis the increase in output of steel in the country and improvement in the global trend has been dealt with

Status of Waste Treatment in Titanium Mineral Industries

The titanium mineral industries encompassing mining, mineral separation and value addition activities generate considerable quantities of wastes primarily in the form of iron chloride/sulphate, iron oxide and acidic effluents.This paper presents a brief review of various value addition activities and associated waste generation issues. Special reference is made of the problems faced by Indian plants engaged in the processing of titanium minerals

A new microscopic nucleon-nucleon interaction derived from relativistic mean field theory

A new microscopic nucleon-nucleon (NN) interaction has been derived for the first time from the popular relativistic mean field theory (RMFT) Lagrangian. The NN interaction so obtained remarkably relate to the inbuilt fundamental parameters of RMFT. Furthermore, by folding it with the RMFT-densities of cluster and daughter nuclei to obtain the optical potential, it's application is also examined to study the exotic cluster radioactive decays, and results obtained found comparable with the successfully used M3Y phenomenological effective NN interactions. The presently derived NN-interaction can also be used to calculate a number of other nuclear observables.Comment: 4 Pages 2 Figure

Anatomy of neck configuration in fission decay

The anatomy of neck configuration in the fission decay of Uranium and Thorium isotopes is investigated in a microscopic study using Relativistic mean field theory. The study includes $^{236}U$ and $^{232}Th$ in the valley of stability and exotic neutron rich isotopes $^{250}U$, $^{256}U$, $^{260}U$, $^{240}Th$, $^{250}Th$, $^{256}Th$ likely to play important role in the r-process nucleosynthesis in stellar evolution. Following the static fission path, the neck configurations are generated and their composition in terms of the number of neutrons and protons are obtained showing the progressive rise in the neutron component with the increase of mass number. Strong correlation between the neutron multiplicity in the fission decay and the number of neutrons in the neck is seen. The maximum neutron-proton ratio is about 5 for $^{260}$U and $^{256}$Th suggestive of the break down of liquid-drop picture and inhibition of the fission decay in still heavier isotopes. Neck as precursor of a new mode of fission decay like multi-fragmentation fission may also be inferred from this study.Comment: 16 pages, 5 figures (Accepted