K. P. Singh

Effect of fissility in fission time scales for 16,18O+194,198Pt systems

The pre-scission neutron multiplicities have been studied for 16,18O+194,198Pt at 50, 61, 71.7, 79 MeV excitation energy populating 210,212,214,216Rn compound nuclei having fissility 0.735, 0.732, 0.729, 0.726 respectively. Fission Time scales were extracted from the measured pre-scission neutron multiplicity and statistical model PACE2. The effect of fissility on fission time scales has been measured. It is found that fission time scales increases in a consistent way with fissility of the compound nuclei (CN) populated. The fission delays extracted for different CN are in good agreement with earlier published data for heavier systems [1, 2]. In the present work it is shown systematically that the fission time scales generally increases with fissility value of CN.

Band gap and FTIR studies for copper-zinc sol-gel glasses

Sol-gel technique was used for synthesis of Calcium phosphorous Borosilicate (CaO-SiO2-B2O3-P2O5-CuO-ZnO) glasses by varying composition of Copper oxide and Zinc oxide. Sol-gel route uses organic precursors which provide better homogeneity and uniform particle size compared to melt quenched glass. Four different glass stoichiometries were characterised using UV-visible spectroscopy and Fourier transforms infra-red spectroscopy (FTIR). Infra-red spectrum of transmittance of powdered glass samples is obtained by FTIR which measure the transmittance of wavelength in them and it also determines the presence of different functional group. Band gap has been obtained using UV-visible spectroscopy for all the glasses so as to study the effect of increasing ZnO content in glass composition. The change in band gap with ZnO content is indication of the change in number of non-bridging oxygen’s (NBO).

Efficient Utilization of Bandwidth in Location Aided Routing

Earlier work on routing MANETs developed several routing protocols, which finds available route from source to destination without taking into the consideration of Band width availability for data transfer, and they frequently fails to discover stable routes between source and destination. As a result of that there is a large numbers of discarding of data packets as well as overloading of packets as the consequences of that large wastage of band width. EUBLAR (Efficient Utilization of band width in Location Aided Routing) protocol is introduced in this proposed work, which is capable of calculating the available band width of all the intermediate nodes between source and destination. In this proposed protocol find the minimum available band width of all the intermediate nodes between source and destination and then according to that band width sends the data packets over that path. The EUBLAR can effectively utilized the wastage of band width and every single band width can be used for data transfer can be used over entirely configured network. In this way we can increase the quality of service of the Ad- hoc network in terms of bandwidth.

A New Theoretical Approach to Location Based Power Aware Routing

In MANETs, when information is sent from the source to the destination, these information packets travel through all the nodes which come across the path from the source to the destination. If the battery backup of any node across this path is less than the minimum time required to transmit the information packets from the source to the destination, then this information cannot be sent. In this proposed work, alternate methods are proposed to overcome this problem. One such proposed solution is to utilize Root up time Factor (RUF) for calculating the battery backup of all the nodes and then to use only those nodes which have maximum battery backup.

Polarization measurements and high spin structure in 131Ba

The high spin states of 131Ba have been populated in the fusion evaporation reaction 122Sn(13C,4n)131Ba at Ebeamu2009=u200965MeV. The γ transitions belonging to various band structures were detected using an array of fifteen Clover Germanium detectors. Some of new transitions have been placed in high spin states. Spin and parity for a band has been calculated for first time in 131Ba. The said band is interpreted in term of multi-quasiparticle configurations, based on Total Rothian Surfaces (TRS) calculations.