Indian Institute of Technology Indore

About: Indian Institute of Technology Indore is a education organization based out in Indore, Madhya Pradesh, India. It is known for research contribution in the topics: Fading & Support vector machine. The organization has 1606 authors who have published 4803 publications receiving 66500 citations.

Radial Flow and Differential Freeze-out in Proton-Proton Collisions at $\sqrt{s}= 7$ TeV at the LHC

Abstract: We analyse the transverse momentum ($p_{T}$)-spectra as a function of charged-particle multiplicity at midrapidity ($\vert y\vert < 0.5$) for various identified particles, such as $\pi^{\pm}$, $K^{\pm}$, $K_{S}^{0}$, $p+\overline{p}$, $\phi$, $ K^{\ast 0} + \overline{K^{\ast 0}}$, and $\Lambda + \bar{\Lambda}$ in proton-proton collisions at $ \sqrt{s} = 7$ TeV using Boltzmann-Gibbs Blast Wave (BGBW) model and thermodynamically consistent Tsallis distribution function. We obtain the multiplicity-dependent kinetic freeze-out temperature ($ T_{\rm kin}$) and radial flow ($\beta$) of various particles after fitting the pT-distribution with BGBW model. Here, $ T_{\rm kin}$ exhibits mild dependence on multiplicity class while $ \beta$ shows almost independent behaviour. The information regarding Tsallis temperature and the non-extensivity parameter (q are drawn by fitting the $ p_{\rm T}$-spectra with Tsallis distribution function. The extracted parameters of these particles are studied as a function of charged particle multiplicity density ($\rm{d} N_{ch}/ \rm{d} \eta$). In addition to this, we also study these parameters as a function of particle mass to observe any possible mass ordering. All the identified hadrons show a mass ordering in temperature, non-extensive parameter and also a strong dependence on multiplicity classes, except the lighter particles. It is observed that as the particle multiplicity increases, the q-parameter approaches to Boltzmann-Gibbs value, hence a conclusion can be drawn that system tends to thermal equilibrium. The observations are consistent with a differential freeze-out scenario of the produced particles.

Charged-particle multiplicity distributions over a wide pseudorapidity range in proton-proton collisions at √s= 0.9, 7, and 8 TeV

Abstract: We present the charged-particle multiplicity distributions over a wide pseudorapidity range ( $-\,3.4<\eta <5.0$ ) for pp collisions at $\sqrt{s}= 0.9, 7$ , and 8 TeV at the LHC. Results are based on information from the Silicon Pixel Detector and the Forward Multiplicity Detector of ALICE, extending the pseudorapidity coverage of the earlier publications and the high-multiplicity reach. The measurements are compared to results from the CMS experiment and to PYTHIA, PHOJET and EPOS LHC event generators, as well as IP-Glasma calculations.

Shape controlled synthesis of high surface area MgO microstructures for highly efficient congo red dye removal and peroxide sensor

Abstract: In this work, we have synthesized magnesium oxide (MgO) with two different surface morphologies (rods=MgO-R and spheres=MgO-S). Their physiochemical properties were investigated by various advanced techniques (Powder X-ray Diffraction = PXRD; Field Emission Scanning Electron Microscopy = FE-SEM; Energy-Dispersive X-ray = EDAX and Fourier-Transform Infrared Spectroscopy = FTIR). Moreover, N2 adsorption-desorption isotherm study was also performed to check the specific surface area of the synthesized MgO-R and MgO-S. MgO possess excellent features such as non-toxicity, high isoelectric point and low cost) and has been considered a most promising candidate for the removal of heavy metals/toxic dyes from waste water. Therefore, we have employed the synthesized MgO-R and MgO-S as adsorbing agents for dye adsorption study. MgO-R showed excellent adsorption capability over MgO-S toward congo red (CR) dye with 99.6% efficiency within 30 min along with higher adsorption capacity of 1928m2/g. Moreover, the working surface area of screen printed electrodes (SPE) were fabricated with MgO-R (SPE-1) and MgO-S (SPE-2) assisted with 0.1% nafion. These SPE-1 and SPE-2 were employed for the voltammetric determination of hydrogen peroxide (H2O2). The SPE-1 showed most promising detection limit of 0.31μM with good linear range.