A5101583922- Nuclear physics research studies
- Atomic and Molecular Physics
- Astronomical and nuclear sciences
- Nuclear Physics and Applications
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Nuclear reactor physics and engineering
- Rare-earth and actinide compounds
- Advanced Chemical Physics Studies
- Particle accelerators and beam dynamics
- Radiation Detection and Scintillator Technologies
- X-ray Spectroscopy and Fluorescence Analysis
- Atomic and Subatomic Physics Research
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced NMR Techniques and Applications
- Particle physics theoretical and experimental studies
- Quantum, superfluid, helium dynamics
- Astro and Planetary Science
- Scientific Research and Discoveries
- Superconducting Materials and Applications
- Handwritten Text Recognition Techniques
- Magnetic Properties of Alloys
- Gamma-ray bursts and supernovae
- Neutrino Physics Research
- Radioactive Decay and Measurement Techniques
Variable Energy Cyclotron Centre
2016-2025
Florida State University
2022-2024
Homi Bhabha National Institute
2016-2024
Visva-Bharati University
2020-2023
GANIL
2023
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2023
Centre National de la Recherche Scientifique
2023
Saha Institute of Nuclear Physics
2013-2020
Indian Statistical Institute
2014-2016
John Wiley & Sons (Germany)
2014
Complete fusion excitation functions for B11,10+Tb159 have been measured at energies around the respective Coulomb barriers, and existing complete measurements Li7+Tb159 extended to higher energies. The show significant reduction of cross sections above-barrier both reactions, B10+Tb159 Li7+Tb159, when compared those B11+Tb159. comparison shows that extent suppression is correlated with α-separation projectiles. Also, two were found produce incomplete products near α-particle emitting...
We report the first observation of two wobbling bands in $^{183}$Au, both which were interpreted as transverse (TW) band but with different behavior their energies a function spin. It increases (decreases) spin for positive (negative) parity configuration. The crucial evidence nature bands, dominance $E2$ component $\Delta I = 1$ transitions between partner is provided by simultaneous measurements directional correlation from oriented states (DCO) ratio and linear polarization $\gamma$ rays....
Excited-state spectroscopy from the first Facility for Rare Isotope Beams (FRIB) experiment is reported. A 24(2)-$\mu$s isomer was observed with FRIB Decay Station initiator (FDSi) through a cascade of 224- and 401-keV $\gamma$ rays in coincidence $^{32}\textrm{Na}$ nuclei. This only known microsecond ($1{\text{ }\mu\text{s}}\leq T_{1/2} < 1\text{ ms}$) region. nucleus at heart $N=20$ island shape inversion crossroads spherical shell-model, deformed ab initio theories. It can be represented...
The High-spin states in 195Tl, populated through the 185,187Re(13C, xn) fusion evaporation reaction at beam energy of 75 MeV, were studied using Indian National Gamma Array (INGA). More than 50 new γ transitions have been placed proposed level scheme which is extended up to excitation ≈ 5.6 MeV and spin=22.5ħ. Two pairs degenerate bands based on two different quasi-particle configurations identified this nucleus indicating first observation such an odd-A A∼190 region signify evidence...
New half-lives for exotic isotopes approaching the neutron drip-line in vicinity of N∼28 Z=12-15 were measured at Facility Rare Isotope Beams (FRIB) with FRIB decay station initiator. The first experimental results are compared to latest quasiparticle random phase approximation and shell-model calculations. Overall, consistent available theoretical descriptions suggest a well-developed region deformation below ^{48}Ca N=28 isotones. erosion Z=14 subshell closure Si is experimentally...
The influence of $\ensuremath{\alpha}$ clustering on nuclear reaction dynamics is investigated using the giant dipole resonance (GDR) lineshape studies in reactions $^{20}\mathrm{Ne}$ (${E}_{\mathrm{lab}}=145,160$ MeV) $+$ $^{12}\mathrm{C}$ and (${E}_{\mathrm{lab}}=160$ $^{27}\mathrm{Al}$, populating $^{32}\mathrm{S}$ $^{47}\mathrm{V}$, respectively. GDR lineshapes from two systems are remarkably different each other. Whereas, non-$\ensuremath{\alpha}$-like $^{47}\mathrm{V}$ undergoes Jacobi...
The excited states of $^{209}\mathrm{Rn}$ ($Z=86, N=123$) have been populated by the heavy-ion induced fusion evaporation reaction $^{198}\mathrm{Pt}(^{16}\mathrm{O},5n)^{209}\mathrm{Rn}$ at a beam energy 102 MeV. de-excited $\ensuremath{\gamma}$ rays were detected with Compton suppressed clover HPGe detectors Indian National Gamma Array (INGA) set-up. high spin spectroscopic study has carried out up to an excitation 7.9 MeV and (55/2)$\ensuremath{\hbar}$. Spin-parity assignments levels...
The high spin level structures of $^{100}\mathrm{Ru}$ have been studied through discrete-line $\ensuremath{\gamma}$-ray spectroscopy. This study reveals the existence seven interleaved $E1$ transitions between two alternate parity bands $^{100}\mathrm{Ru}$, which is a novel observation for this mass region. measured values $B(E1)/B(E2)$ rates exhibit an enhancement and energy splitting vanishes beyond $I=16\ensuremath{\hbar}$. Similar observations $N=88$ isotones proposed to be indicator...
Fission fragment mass distribution has been determined in the $^{238}\mathrm{U}$($^{18}\mathrm{O}$,$f$) reaction from on-line measurement of individual even-even yields by analyzing $\ensuremath{\gamma}$-$\ensuremath{\gamma}$ matrix. Fine structure dips corresponding to shell closures at $Z=50$ and $N=82$ are observed, indicating effect nuclear dynamical evolution fissioning nucleus. The present results may suggest a new feature shape inhibition closed nuclei scission point.
Mass distribution of fission fragments and neutron multiplicity in the ${}^{16}\text{O}+{}^{238}$U reaction were measured at near- below-barrier energies. A sudden change fragment mass width, observed present measurement, confirmed transition to quasifission energies; same was indicated earlier from study angular anisotropy. However, measurement prescission as well evaporation residue yield did not indicate any significant departure respective statistical model predictions throughout energy...
Neutron evaporation spectra at backward angles from ${}^{201}$Tl${}^{*}$, ${}^{185}$Re${}^{*}$, and ${}^{169}$Tm${}^{*}$ compound nuclei, having different ground-state deformations, have been measured two excitation energies (${E}^{*}$ $\ensuremath{\sim}$ 37 26 MeV). The values of the inverse level density parameter ($k$), extracted these excitations using statistical model calculations, are observed to decrease substantially lower energy ($\ensuremath{\sim}$26 MeV) for nuclei large...
The phenomenon of collective enhancement in nuclear level density and its fadeout has been probed using neutron evaporation study two strongly deformed (173Lu, 185Re), one spherical (201Tl) compound nuclei over the excitation energy (E⁎) range ∼22–56 MeV. Clear signature was observed for first time both residues 172Lu 184Re at an ∼14–21 Calculations based on finite temperature functional theory, as well macroscopic–microscopic shape transition model, have established a close correlation...
A few studies of online Bangla handwriting recognition such as isolated character or limited vocabulary cursive word are found in the literature. However, development an end-to-end system unconstrained handwritten texts has not been duly attempted so far. In present report, we describe a similar which takes piece continuous input. It first segments input into individual lines, each line its constituent words and sub-strokes. study, 152 different symbols include basic characters, modifiers,...
We present, for the first time, simultaneous determination of shear viscosity ($\ensuremath{\eta}$) and entropy density ($s$) thus, $\ensuremath{\eta}/s$ equilibrated nuclear systems from $A\ensuremath{\sim}30$ to $A\ensuremath{\sim}208$ at different temperatures. At finite temperature, $\ensuremath{\eta}$ is estimated by utilizing $\ensuremath{\gamma}$ decay isovector giant dipole resonance populated via fusion evaporation reaction, while $s$ evaluated level parameter ($a$) temperature...
The rotational response as a function of neutron–proton asymmetry for the very neutron-rich isotopes Rh (116–119Rh) has been obtained from measurement prompt γ rays isotopically identified fragments, produced in fission reactions at energies around Coulomb barrier. measured energy "signature" splitting yrast bands, when compared with Triaxial Projected Shell Model (TPSM) calculations, shows need large, nearly constant, triaxial deformations. present results are global predictions existence...
Neutron evaporation spectra have been measured from $^{4}\mathrm{He}+^{208}\mathrm{Pb}$ and $^{4}\mathrm{He}+^{209}\mathrm{Bi}$ reactions by using $^{4}\mathrm{He}$-ion beams of several bombarding energies. Excitation-energy dependence the level density parameter has studied for two systems in excitation energy range $\ensuremath{\sim}18$--50 MeV. For both an overall reduction asymptotic with increasing (temperature) is observed. The trend data was compared Thomas--Fermi model predictions...
The excited states in the transitional nucleus $^{131}\mathrm{Xe}$ have been populated by using $\ensuremath{\alpha}$-induced fusion-evaporation reaction and de-exciting $\ensuremath{\gamma}$ rays were detected with Compton suppressed clover detector setup of Indian National Gamma Array coupled to digital data acquisition system. existing level structure has significantly extended observation placement 72 new $\ensuremath{\gamma}$-ray transitions. use light-ion ($\ensuremath{\alpha}$) beam...
The inclusive energy distributions of fragments with Z $\geq$ 3 emitted from the bombardment $^{12}$C by $^{20}$Ne beams incident energies between 145 and 200 MeV have been measured in angular range $\theta_{lab} \sim$ 10$^\circ$ - 50$^\circ$. Damped fragment yields all cases found to be characteristic emission fully equilibrated composites; for B, C fragments, average Q-values, $<Q>$, were independent centre mass angle ($\theta_{c.m}$), followed $\sim$1/sin$\theta_{c.m}$ like variation,...
An exclusive systematic study of the giant dipole resonance (GDR) parameters has been performed in very light mass nucleus P31 temperature range ∼0.8–2.1MeV and average angular momentum ∼11–16ħ. The high-energy γ rays from decay GDR, evaporated neutrons γ-ray multiplicities have measured. distribution also measured at Ebeam=42MeV. GDR parameters, nuclear level density parameter were precisely determined by simultaneous statistical model analysis ray neutron spectra. It is observed that width...