A5058004957- Nuclear physics research studies
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- Particle accelerators and beam dynamics
- Magnetic confinement fusion research
- Radiation Detection and Scintillator Technologies
- Advanced NMR Techniques and Applications
- Quantum Chromodynamics and Particle Interactions
- Advanced Chemical Physics Studies
- Advancements in Semiconductor Devices and Circuit Design
- Superconducting Materials and Applications
- Nuclear reactor physics and engineering
- Semiconductor materials and devices
- Atomic and Subatomic Physics Research
- Non-Destructive Testing Techniques
- Transition Metal Oxide Nanomaterials
- Ophthalmology and Eye Disorders
- Radiation Effects in Electronics
- Astro and Planetary Science
- Integrated Circuits and Semiconductor Failure Analysis
- Particle Accelerators and Free-Electron Lasers
- Neutrino Physics Research
- Semiconductor Quantum Structures and Devices
- Wind Turbine Control Systems
- Energy Load and Power Forecasting
Jawaharlal Nehru University
2024
Center for Excellence in Basic Sciences
2019-2023
University of Mumbai
2019-2023
Inter-University Accelerator Centre
2010-2015
Motilal Nehru Medical College
2010
The excited level structures of $^{202}\mathrm{Tl}$ and $^{203}\mathrm{Pb}$, above the ${7}^{+}$ $29/{2}^{\ensuremath{-}}$ isomers, respectively, have been studied. An isomer with ${I}^{\ensuremath{\pi}}={20}^{+}$ ${T}_{1/2}=215(10)\phantom{\rule{4pt}{0ex}}\ensuremath{\mu}\mathrm{s}$ has established in $^{202}\mathrm{Tl}$, scheme extended from $I=10$ to $20\phantom{\rule{0.16em}{0ex}}\ensuremath{\hbar}$ placement fifteen new transitions. In ${I}^{\ensuremath{\pi}}=37/{2}^{+}$ state is be...
Yrast and near-yrast states above the known 25/2$^{+}$ isomer in $^{207}$At are established for first time. The level scheme is extended up to 47/2$\hbar$ 6.5 MeV with addition of about 60 new $\gamma$-ray transitions. half-life revisited a value $T_{1/2}$ = 107.5(9) ns deduced. Evidence hitherto unobserved 29/2$^{+}$ presented. A systematic study $B(E3)$ values transitions de-exciting neighboring odd-$A$ At isotopes suggests 2$-$4.5 $\mu$s range this state $^{207}$At. experimental results...
A six-quasiparticle isomer with $T{}_{1/2}$ = 57(2) ns has been established in the doubly-odd isotope $^{200}\mathrm{Tl}$ and its level scheme is significantly extended. Half-lives of previously reported isomers $^{201,202}\mathrm{Pb}$ have determined revised values are a few cases, 397(17) 7.0(5) for ${\mathit{I}}^{\ensuremath{\pi}}={5}^{+}$ ${7}^{\ensuremath{-}}$ states $^{200}\mathrm{Tl}$, 52(2) $41/{2}^{+}$ $^{201}\mathrm{Pb}$, 93(4) ${16}^{+}$ state $^{202}\mathrm{Pb}$. Configurations...
Indian National Gamma Array (INGA) is a 4π multi-detector gamma-ray spectrometer based on twenty four Compton-suppressed Clover Germanium detectors with total photo peak efficiency ~ 5 %. INGA was designed to perform high resolution spectroscopy study nuclear structure at spins stable ion beams Inter University Accelerator Centre (IUAC). Description of the facility and performance array are presented in this paper. Since its commissioning, number spectroscopic investigations have been...
Metastable states with T$_{1/2}$ = 8(2) ms in $^{205}$Bi and 0.22(2) $^{204}$Pb, $\approx $ 8 MeV excitation energy angular momentum $\ge 22 $\hbar $, have been established. These represent, by up to two orders of magnitude, the longest-lived nuclear above an 7 MeV, ever identified chart. Additionally, half-life 10.17 state $^{206}$Bi has determined be 0.027(2) ms, next highest value this highly excited regime. observations indicate emergence island extreme isomerism arising from...
The level structure of the transitional nucleus $^{217}\mathrm{Ra}$ has been extended with addition around 20 new transitions. discrepancies between placements several transitions reported in earlier studies are resolved. newly established negative-parity sequence at low excitation energies hints expected parity-doublet structures this nucleus. properties observed simplex bands compared that similar neighboring nuclei. Since presence reflects octupole correlations, theoretical calculations...
Isomeric states and associated collective structures have been studied up to high spin in $^{198,200,202}\mathrm{Hg}$ using multinucleon transfer reactions the Gammasphere array. A coupled rotational band, with possible four-quasiparticle character, is established $^{198}\mathrm{Hg}$. Sequences built on two-quasiparticle, positive- negative-parity levels are assigned $^{202}\mathrm{Hg}$. New isomers $^{202}\mathrm{Hg}$ ${I}^{\ensuremath{\pi}}=({7}^{\ensuremath{-}})$ $({9}^{\ensuremath{-}})$,...
Demand for power is rising, highlighting the need renewable energy sources as long-term sources. Wind a prominent source. Dually Fed Induction Generator (DFIG) wind system has become increasingly popular because of its many advantages, which include independent control reactive and active And variable speed operation. Energy experts now have serious concerns about integrating farms with DFIG into electrical grid. When there are grid disruptions, voltage stability essential to keep DFIG-based...
Simultaneous high-resolution energy and picosecond timing measurements have been established with an 8-channel, 14-bit, 500 MS/s digitizer coupled to semiconductor scintillation radiation detectors, resulting in performance equivalent that obtained analog electronics. By interpolating between the 2 nanosecond time stamps associated sampling frequency, up few tens of picoseconds is achieved. Energy resolution linearity are determined be excellent. Coincidence precise lifetime performed...
The level structure of the transitional nucleus $\mathrm{^{217}Ra}$ has been extended with addition around 20 new transitions. discrepancies between placements several transitions reported in earlier studies are resolved. newly-established negative-parity sequence at low excitation energies hints expected parity-doublet structures this nucleus. properties observed simplex bands compared that similar neighboring nuclei. Since presence reflect octupole correlations, theoretical calculations...
Pituitary adenomas usually present with visual field defects and headache. Large tumors may cause diplopia ophthalmoparesis by cranial nerve compression in cavernous sinus. However, all such cases almost always have poor acuity also. We a rare case of 35-year-old male large pituitary adenoma who presented headache, ptosis but had normal vision both eyes. He supero-temporal quadrantic defect the right eye an atypical involving temporal quadrants left eye. The relevant literature is reviewed...
The negative-parity band structure built on the proton $h{}_{9/2}$ state in $^{199}\mathrm{Tl}$ has been established up to an excitation energy of 7 MeV and spin (51/2)$\ensuremath{\hbar}$. level scheme extended with inclusion fourteen new transitions de-exciting levels at high spin. $\mathrm{\ensuremath{\Delta}}\mathit{I}=1$ $\ensuremath{\gamma}$ rays are found be more prominently visible spectra when comparing $\mathrm{\ensuremath{\Delta}}\mathit{I}=2$ transitions. Rotation alignments...
Yrast and near-yrast states above the known 25/2$^{+}$ isomer in $^{207}$At are established for first time. The level scheme is extended up to 47/2$\hbar$ 6.5 MeV with addition of about 60 new $γ$-ray transitions. half-life revisited a value $T_{1/2}$ = 107.5(9) ns deduced. Evidence hitherto unobserved 29/2$^{+}$ presented. A systematic study $B(E3)$ values transitions de-exciting neighboring odd-$A$ At isotopes suggests 2$-$4.5 $μ$s range this state $^{207}$At. experimental results compared...