A5068040115- Nuclear physics research studies
- Quantum Chromodynamics and Particle Interactions
- Nuclear Physics and Applications
- Particle physics theoretical and experimental studies
- Astronomical and nuclear sciences
- Nuclear reactor physics and engineering
- Atomic and Molecular Physics
- High-Energy Particle Collisions Research
- Nuclear Materials and Properties
- Advanced Chemical Physics Studies
- Advanced NMR Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Particle Detector Development and Performance
- Particle accelerators and beam dynamics
- Radiopharmaceutical Chemistry and Applications
- Atomic and Subatomic Physics Research
- Radioactivity and Radon Measurements
- X-ray Spectroscopy and Fluorescence Analysis
- Medical Imaging Techniques and Applications
- Pulsars and Gravitational Waves Research
- Rare-earth and actinide compounds
- Neutrino Physics Research
- Solid-state spectroscopy and crystallography
- Muon and positron interactions and applications
- Cold Atom Physics and Bose-Einstein Condensates
Bhabha Atomic Research Centre
2014-2023
Homi Bhabha National Institute
2017-2022
Bhabha Atomic Research Center Hospital
2020
Austrian Academy of Sciences
2016
Gauhati University
2016
Friedrich-Alexander-Universität Erlangen-Nürnberg
2016
Johannes Gutenberg University Mainz
2016
GSI Helmholtz Centre for Heavy Ion Research
2016
Facility for Antiproton and Ion Research
2016
Kyoto University
2014
Complete fusion cross sections have been measured using the off-line $\ensuremath{\gamma}$-ray spectroscopy method for ${}^{6}$Li+${}^{90}$Zr system around barrier energies. Statistical and coupled-channel calculations performed to investigate effect of coupling on complete fusion. It is observed that suppressed by 34 $\ifmmode\pm\else\textpm\fi{}$ 8$%$ compared coupled channel predictions. The breakup estimated continuum discretized channels (CDCC) it found reduce probability. Contrary...
The exclusive projectile breakup cross section in the Li6+Bi209 reaction has been measured at Elab=40 and 36 MeV. sequential breakup, via resonant state (3+, 2.18 MeV) of 6Li continuum, dominates total α+d breakup. inclusive α is, however, much larger implying that other competing processes contribute to α-particle yields. corrected yields corresponding two peaks or d spectra were seen be asymmetric. average data are good agreement with continuum discretized coupled channels (CDCC)...
Measurements of elastic scattering for the $^{6}\mathrm{Li}+^{90}\mathrm{Zr}$ system has been performed at various energies, namely, 11, 12, 13, 15, 17, 19, 21, 25, and 30 MeV, to study energy dependence interaction potential. Angular distributions have measured in a wide angular range extract behavior potential reliably. The data analyzed using phenomenological Woods-Saxon shaped optical double folding shows characteristics breakup threshold anomaly, increase imaginary near barrier with...
We have carried out an experiment to search for a neutron-rich hypernucleus, $^6_{\Lambda}$H, by the $^6$Li($\pi^-,K^+$) reaction at $p_{\pi^-}$ =1.2 GeV/$c$. The obtained missing mass spectrum with estimated energy resolution of 3.2 MeV (FWHM) showed no peak structure corresponding $^6_{\Lambda}$H hypernucleus neither below nor above $^4_{\Lambda}$H$+2n$ particle decay threshold. An upper limit production cross section bound was be 1.2 nb/sr 90% confidence level.
We have studied the reaction $p+$$^{27}\mathrm{Al}$ $\ensuremath{\rightarrow}$ $^{3}\mathrm{He}$$+p+{\ensuremath{\pi}}^{\ensuremath{-}}+X$ at recoil-free kinematics. An $\ensuremath{\eta}$ meson possibly produced in this would be thus almost rest laboratory system and could therefore bound with high probability, if nuclear states exist. The decay of such a state through ${N}^{*}(1535)$ resonance lead to proton-${\ensuremath{\pi}}^{\ensuremath{-}}$ pair emitted opposite directions. For these...
Single- and multi-nucleon transfer reactions, namely, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{20}\mathrm{O})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{19}\mathrm{O})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{17}\mathrm{O})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{16}\mathrm{O})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{18}\mathrm{N})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{17}\mathrm{N})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{16}\mathrm{N})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{15}\mathrm{N})$,...
Mass distributions of fission fragments produced from the $^{249}\mathrm{Bk}$ compound nucleus (CN), populated by complete fusion $^{11}\mathrm{B}$ with $^{238}\mathrm{U}$, were measured for excitation energies in range ${E}_{\mathrm{cn}}^{*}\ensuremath{\approx}36.7--69.7$ MeV. Nearly flat tops observed these indicate presence asymmetric fission, contrary to pure Gaussian mass expected at such high energies. A fit distribution using three functions provides an estimate individual...
Inclusive ($\mathrm{direct}+\mathrm{compound}$) $\ensuremath{\alpha}$ production for the $^{6}\mathrm{Li}+^{90}\mathrm{Zr}$ system is measured at near barrier energies, namely, $15,17,19,21,25$, and 30 MeV. The data are treated in statistical model distorted-wave Born approximation framework to disentangle degree of competition between direct compound reaction channels. A substantial contribution from channels obtained but found be dominant mechanism these energies. Estimation breakup...
We have measured an inclusive missing-mass spectrum of the $d(\pi^+, K^+)$ reaction at pion incident momentum 1.69 GeV/$c$ laboratory scattering angles between 2$^\circ$ and 16$^\circ$ with resolution 2.7 $\pm$ 0.1 MeV/$c^2$ (FWHM) missing mass 2.27 GeV/$c^{2}$. In this Letter, we first try to understand as a simple quasi-free picture based on several known elementary cross sections, considering neutron/proton Fermi motion in deuteron. While gross structures are well understood picture,...
Background: Simultaneous description of major outgoing channels for a nuclear reaction by coupled-channels calculations using the same set potential and coupling parameters is one difficult tasks to accomplish in studies.Purpose: To measure elastic, inelastic, transfer cross sections as many possible $^{7}\mathrm{Li}+^{120}\mathrm{Sn}$ system at different beam energies simultaneously describe them single model fresco.Methods: Projectile-like fragments were detected six sets Si-detector...
Direct and sequential breakups of the projectile in $^{7}\mathrm{Li}+^{112}\mathrm{Sn}$ reaction have been measured at a beam energy 30 MeV. Cross sections for breakup $^{7}\mathrm{Li}$ into $\ensuremath{\alpha}$ $t$ cluster fragments via its second resonant state $5/{2}^{\ensuremath{-}}$ (6.68 MeV) continuum first time along with ($7/{2}^{\ensuremath{-}}$, 4.63 MeV). Probabilities proceeding through $\ensuremath{-}1n$ $\ensuremath{-}2n$ transfer channels, i.e.,...
Background: In heavy-ion induced reactions, the sub-barrier fusion cross sections are found to be higher as compared predictions of one-dimensional barrier penetration model. Attempts have been made explain enhancement by including static deformations, couplings inelastic excitations, and non-fusion channels.Purpose: To investigate factors which influence in $^{37}\mathrm{Cl}+^{130}\mathrm{Te}$ system understand interplay couplings, excitation function was measured at energies from $10%$...
Background: In heavy-ion-induced fusion reactions, cross sections in the sub-barrier region are enhanced compared to predictions of one-dimensional barrier penetration model. This enhancement is often understood by invoking deformation and coupling relative motion with low-lying inelastic states reaction partners. However, effects nucleon transfer on below barrier, especially for systems having positive $Q$ value neutron (PQNT) channels, yet be disentangled completely.Purpose: We intend...
Several processes of meson production in proton-deuteron collisions have been measured simultaneously using a calibrated magnetic spectrograph. Among these processes, the $η$ is seen clearly as sharp missing--mass peak on slowly varying background $p+d\to ^3\textrm{He} +X$ reaction. Knowing kinematics other reactions with well determined masses, it possible to deduce precise mass for meson. The final result, $m(η)=547.311\pm 0.028 \textrm{(stat)} \pm 0.032 \textrm{(syst) MeV/c}^2$,...
Background: Multinucleon transfer reactions at energies around the Coulomb barrier offer a vital opportunity to study rich physics of nuclear structure and dynamics, e.g., single-particle level quantum shells, mass charge equilibration processes, energy dissipation, as well secondary decays via particle emission or fission. Despite continuous development in field, we still have limited knowledge about how deformation---one representative structures---affects multinucleon reactions.Purpose:...
The effect of dipole polarizability (${\ensuremath{\alpha}}_{0}$) $^{7}\mathrm{Li}$ due to its cluster structure has been determined from a high precision elastic scattering measurement on $^{208}\mathrm{Pb}$, over range energies ${E}_{\mathrm{lab}}=18\text{\ensuremath{-}}28 \mathrm{MeV}({V}_{\mathrm{Coul}}\ensuremath{\approx}30 \mathrm{MeV})$. Continuum discretized coupled channel (CDCC) calculations have performed describe the measured data.
Elastic scattering measurement for the $^{9}\mathrm{Be}+^{89}\mathrm{Y}$ system has been carried out at near-barrier energies with aim of investigating effect breakup on elastic channel. The energy dependence optical model potential gives an indication threshold anomaly (BTA) system. An overall repulsive real part dynamic polarization (DPP) generated due to continuum couplings using $\ensuremath{\alpha}+^{5}\mathrm{He}$ cluster structure $^{9}\mathrm{Be}$ is consistent BTA behavior observed...
The $^{59}\mathrm{Ni}(n,xp)$ reaction cross sections have been measured following the surrogate ratio method in equivalent neutron energy range of 11.9--15.8 MeV by populating compound nucleus $^{60}\mathrm{Ni}^{*}$ through transfer $^{56}\mathrm{Fe}(^{6}\mathrm{Li},d)$ at ${E}_{\text{lab}}=35.9$ MeV. $^{59}\mathrm{Co}(^{6}\mathrm{Li},\ensuremath{\alpha})^{61}\mathrm{Ni}^{*}$ ${E}_{\text{lab}}=40.5$ has used as reference which is $^{60}\mathrm{Ni}(n,xp)$ $^{61}\mathrm{Ni}^{*}$. proton decay...
Background: In recent years, considerable interest has been focused on the study of effect neutron skin collective properties vibrational nuclei. This can be best evidenced by exclusively determining and proton transition matrix elements involved in a particular excitation investigating Coulomb-nuclear interference feature inelastic scattering.Purpose: Measurement angular distributions scattering cross sections for excitations to low-lying ${2}_{1}^{+}$ ${3}_{1}^{\ensuremath{-}}$ states...