A5007945969- Nuclear physics research studies
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- Astronomical and nuclear sciences
- Nuclear reactor physics and engineering
- Quantum Chromodynamics and Particle Interactions
- Radiation Detection and Scintillator Technologies
- Advanced NMR Techniques and Applications
- Particle accelerators and beam dynamics
- Atomic and Subatomic Physics Research
- Superconducting Materials and Applications
- Neutrino Physics Research
- Advanced Chemical Physics Studies
- Particle physics theoretical and experimental studies
- X-ray Spectroscopy and Fluorescence Analysis
- Radiation Therapy and Dosimetry
- Quantum, superfluid, helium dynamics
- Rare-earth and actinide compounds
- Inorganic Fluorides and Related Compounds
- Radioactive Decay and Measurement Techniques
- Nuclear Materials and Properties
- Radiopharmaceutical Chemistry and Applications
- Nuclear and radioactivity studies
- Cold Atom Physics and Bose-Einstein Condensates
- Genetic factors in colorectal cancer
Technical University of Darmstadt
2013-2024
Extreme Light Infrastructure - Nuclear Physics
2021-2024
Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering
2021-2024
MIT Art, Design and Technology University
2024
Saha Institute of Nuclear Physics
2017-2024
Homi Bhabha National Institute
2020-2024
GSI Helmholtz Centre for Heavy Ion Research
2019-2021
Tata Institute of Fundamental Research
2018
Variable Energy Cyclotron Centre
2011-2017
University of Toronto
1966-1980
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....
We have extracted the nuclear level density of ${}^{128}$Te from a $(\mathrm{p},\mathrm{p} '\gamma)$ scattering experiment using large-volume \labr\ and \cebr\ detectors ELI-NP at 9~MV Tandem facilities IFIN-HH. The decay data were normalised photonuclear data, resulting in densities without intrinsic model dependencies constant temperature or Fermi gas models. measured follows closely between expectations these two models, but we observe clear divergence microscopic based on Skyrme force.
A high-statistics, high-resolution, complete kinematical measurement has been performed to estimate the quantitative contributions of various direct 3$\ensuremath{\alpha}$ decay mechanisms in famous Hoyle state, ${0}_{2}^{+}$ resonant excited state ${}^{12}$C at an excitation energy 7.654 MeV, using inelastic scattering 60-MeV $\ensuremath{\alpha}$ particles on ${}^{12}$C. The present observation nonzero branching ratios modes, which have extracted...
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...
CoVID-19 is spreading throughout the world at an alarming rate. So far it has spread over 200 countries in whole world. Mathematical modelling of epidemic like always useful for strategic decision making, especially very to gain some understanding future densely populous India. We use a simple yet effective mathematical model SIR(D) predict India by using existing data. also estimate effect lock-down/social isolation via time-dependent coefficient model. The study with realistic parameters...
The low-lying $M1$-strength of the open-shell nucleus $^{50}$Cr has been studied with method nuclear resonance fluorescence up to 9.7 MeV, using bremsstrahlung at superconducting Darmstadt linear electron accelerator S-DALINAC and Compton backscattered photons High Intensity $\gamma$-ray Source (HI$\gamma$S) facility between 6 MeV initial photon energy. Fifteen $1^{+}$ states have observed 3.6 MeV. Following our analysis, lowest state can be considered as an isovector orbital mode some spin...
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...
The quadrupole transition strength $B(E2)$ deduced from the measured level lifetimes using Doppler shift attenuation method with help of Indian National Gamma Array, decreases increasing spin for band interest in $^{82}\mathrm{Kr}$. In addition, ratio dynamic moment inertia value increases along band. Large basis shell-model calculations have been performed to understand microscopic origin interest. experimental results are reproduced well by numerical within framework a semiclassical...
Excited states in B10 were populated with the B10(p,p′γ)B10* reaction at 8.5 MeV and their γ decay was investigated via coincidence γ-ray spectroscopy. The emitted rays measured using large-volume LaBr3:Ce CeBr3 detectors placed anti-Compton shields. This allowed observation of weak transitions, such as M3 transition between Jπ,T=0+,1 isobaric analog state (IAS) Jπ,T=3+,0 ground E2 Jπ,T=21+,0 IAS, i.e., performing measurements branching ratios level λ≥10−4. For first time B10, competing M1...
Retinal vessel segmentation is a critical task in fundus image analysis, providing essential insights for diagnosing various retinal diseases. In recent years, deep learning (DL) techniques, particularly Generative Adversarial Networks (GANs), have garnered significant attention their potential to enhance medical analysis. This paper presents novel approach by harnessing the capabilities of GANs. Our method, termed GANVesselNet, employs specialized GAN architecture tailored intricacies...
Neutron evaporation energy spectra have been measured in coincidence with $\ensuremath{\gamma}$ rays of different multiplicities for ${}^{119}$Sb${}^{*}$ the excitation range $\ensuremath{\sim}31$--43 MeV. The inverse level density parameter ($k$) extracted angular momentum regions corresponding to $\ensuremath{\gamma}$-ray by comparing experimental neutron statistical model prediction. It has observed that increases increase momentum. Possible reasons this variation discussed.
The high spin states in the odd-odd ${}^{194}$Tl nucleus have been studied by populating them using ${}^{185,187}$Re(${}^{13}\text{C},xn$) reactions at a beam energy of 75 MeV. A $\ensuremath{\gamma}\ensuremath{-}\ensuremath{\gamma}$ coincidence measurement has performed INGA array with digital data acquisition system to record time-stamped data. Definite spin-parity assignment levels was made from DCO ratio and IPDCO measurements. level scheme extended up 4.1 MeV excitation includes 19 new...
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...
We report on the $\ensuremath{\beta}$-delayed neutron emission probability (${P}_{1n}$) measurements of $^{82,83,84}\mathrm{Ga}$ ($N=51,52,53$) precursors performed in one single experiment using $^{3}\mathrm{He}$ neutron-counter TETRA at ALTO facility Orsay. Altogether our results for three $A=82,83$, and 84 Ga point towards a sizable ${P}_{1n}$ staggering $N=50$ region, similar to already observed just after $N=28$ shell closure K isotopes chain, hinting mechanism. will discuss possible...
Levkovskii's and Gardner's empirical formulas for 14 MeV neutron (n,p) cross sections can be shown to mainly equivalent the following approximation: [Formula: see text]subject modifications from direct interaction. Here T is nuclear temperature, given by 10/A 1/2 V p ′ Dostrovsky's value of effective Coulomb barrier. Q np calculated using mass formula text]in which B Z 0 /A are shell-independent parameters.
Using enriched titanium samples, the activation (n, p) and pn; n, np; n,d) cross sections have been measured for five isotopes of in neutron energy range from 13.6 to 19.5 MeV. The results were compared with calculations based primarily upon Bodansky's theory (1962), where first proton emission section was taken be sum pn). pn) separated experimental d) by a multiple-emission calculation. nuclear temperature derived data, good agreement achieved between experiment theory. It found that...
Light particle ($n$, $p$, and $\ensuremath{\alpha}$) evaporation spectra have been measured in coincidence with $\ensuremath{\gamma}$ rays of different multiplicities, emitted from ${}^{97}$Tc${}^{*}$ ${}^{62}$Zn${}^{*}$ compound systems at the excitation energies $\ensuremath{\sim}36$ MeV. Statistical model analysis experimental data carried out to extract value inverse level density parameter ($k$) angular momentum regions, corresponding multiplicity. A systematic trend a decrease increase...
The low-lying dipole strength of the $N=28$ closed-shell nucleus ${}^{52}$Cr was studied with nuclear resonance fluorescence up to 9.9 MeV, using bremsstrahlung at superconducting Darmstadt linear electron accelerator S-DALINAC. Twenty-eight spin-1 states were observed between 5.0 and 9.5 MeV excitation energy, 14 which for first time. Both electric excitations ($E1$, around 8 MeV) magnetic ($M1$, 9 detected. Microscopic calculations within quasiparticle-phonon model performed show good...
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...