A5029064009- Nuclear physics research studies
- Nuclear Physics and Applications
- Astronomical and nuclear sciences
- Atomic and Molecular Physics
- Nuclear reactor physics and engineering
- Quantum Chromodynamics and Particle Interactions
- Cold Fusion and Nuclear Reactions
- Nuclear Materials and Properties
- High-Energy Particle Collisions Research
- Fusion materials and technologies
- Superconducting Materials and Applications
- Laser-induced spectroscopy and plasma
- Stochastic processes and statistical mechanics
- Radiopharmaceutical Chemistry and Applications
- Quantum Mechanics and Applications
- Radiation Detection and Scintillator Technologies
- Rare-earth and actinide compounds
- Radioactive contamination and transfer
- Laser-Plasma Interactions and Diagnostics
- High-pressure geophysics and materials
- Ion-surface interactions and analysis
- Quantum, superfluid, helium dynamics
Hebrew University of Jerusalem
2022-2024
Indian Institute of Technology Ropar
2015-2022
Background: The formation of superheavy nuclei in fusion reactions is suppressed by a competing quasifission process. competition between the compound nucleus and depends strongly on reaction entrance channel.Purpose: investigation fission processes $Z=120$ composite systems $^{52,54}\mathrm{Cr}+^{248}\mathrm{Cm}$ $^{68}\mathrm{Zn}+^{232}\mathrm{Th}$ reactions, their comparison with $^{64}\mathrm{Ni}+^{238}\mathrm{U}$ at energies vicinity Coulomb barrier.Methods: Mass-energy distributions...
Fusion excitation function of $^{35}$Cl + $^{130}$Te system is measured in the energy range around Coulomb barrier and analyzed framework coupled-channels approach. The role projectile deformation, nuclear structure, couplings inelastic excitations positive Q$-$value neutron transfer channels sub-barrier fusion are investigated through comparison reduced functions $^{35,37}$Cl +$^{130}$Te systems. shows substantial enhancement over $^{37}$Cl region which attributed to presence Q-value...
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...
In order to study incomplete fusion (ICF) reaction dynamics, the present work manifests role of a non-$\ensuremath{\alpha}$-cluster $^{14}\mathrm{N}$ projectile on $^{181}\mathrm{Ta}$ target at energies $\ensuremath{\approx}4--7$ MeV/nucleon using offline $\ensuremath{\gamma}$-ray spectroscopy. The excitation functions for 15 residues populated in $^{14}\mathrm{N}+^{181}\mathrm{Ta}$ system have been measured and analyzed within framework statistical model code PACE4. experimentally...
Stellar abundances of cerium are high current interest based both on observations and theoretical models, especially with regard to the neutron-magic $^{140}\mathrm{Ce}$ isotope. A large discrepancy $s$-process stellar models relative abundance observed in globular clusters was highlighted, pointing possible uncertainties experimental nuclear reaction rates. In this work, neutron capture cross section stable isotopes $^{136}\mathrm{Ce}$, $^{138}\mathrm{Ce}$, $^{140}\mathrm{Ce}$,...
Background: Fission has been found to be a dominating mode of deexcitation in heavy-ion induced reactions at high excitation energies. The phenomenon fission extensively investigated with highly fissile actinide nuclei, yet there is dearth comprehensive understanding underlying dynamics, particularly the below region and low energies.Purpose: Prime objective this work study different aspects ensuing from evolution composite system formed via complete and/or incomplete fusion...
The reaction mechanism of deep-inelastic multinucleon transfer processes in the $^{16}$O+$^{27}$Al at an incident $^{16}$O energy ($E_{\rm lab}=134$ MeV) substantially above Coulomb barrier has been studied both experimentally and theoretically. Elastic-scattering angular distribution, total kinetic loss spectra distributions for various channels have measured. $Q$-value- angle-integrated isotope production cross sections deduced. To obtain deeper insight into underlying mechanism, we...
Barrier distributions for the $^{28}\mathrm{Si}+^{142,150}\mathrm{Nd}$ systems were extracted from large-angle quasielastic scattering measurements. The measurements carried out over a wide range of incident beam energies around Coulomb barriers. experimental results compared with predictions coupled-channels calculations using different coupling schemes. Reasonable agreement between and theoretical was obtained. role effects various excitation modes projectile target on observed barrier is...
Background: The experimental knowledge of nuclear reaction data and decay properties plays a vital role in searching for novel exotic radioisotopes, prompting us to widen the study heavy-ion induced reactions.Purpose: aim is production mass separated (i.e., separation different masses residues, where each group consists isobaric nuclei) evaporation residues (ERs) populated $^{32}\mathrm{S}+^{70}\mathrm{Zn}$ $^{32}\mathrm{S}+^{68}\mathrm{Zn}$ reactions within 115--135 130--150 MeV incident...
We report on experiments at the Soreq Applied Research Accelerator Facility Liquid-Lithium Target (SARAF-LiLiT) laboratory dedicated to study of s -process neutron capture reactions. The kW-power proton beam 1.92 MeV (1-2 mA) from SARAF Phase I yields high-intensity 30 keV quasi-Maxwellian neutrons (3-5 10 n/s). high intensity enables Maxwellian averaged cross sections (MACS) measurements samples with short-lived decay products. Neutron reactions nat Se and Ce were investigated by activation...
In heavy-ion induced reactions, generally, a large number of residues are populated through different reaction channels. some cases the same residue is via two modes viz., (i) directly from given and (ii) $\ensuremath{\beta}$ and/or electron capture decay nuclide (precursor). Separation required for better understanding dynamics. The procedure existing in literature extracting independent production cross section cumulative employs assumptions half-life daughter being much larger comparison...
Fusion excitation functions have been measured for $^{16}\mathrm{O}+^{61}\mathrm{Ni}$ and $^{18}\mathrm{O}+^{61,62}\mathrm{Ni}$ systems around the Coulomb barrier ($\ensuremath{\approx}0.7{V}_{B}$--$1.3{V}_{B}$) using recoil mass spectrometer, heavy ion reaction analyzer. The ground state $Q$ value two neutron stripping is positive both with $^{18}\mathrm{O}$ as projectile. Strong enhancement of experimental fusion cross sections were observed below all compared to that predictions...
In the present work, low energy incomplete fusion (ICF) in which only a part of projectile fuses with target nucleus has been investigated terms various entrance channel parameters. The ICF strength function extracted from analysis experimental excitation functions (EFs) measured for different projectile-target combinations near- to well above- barrier energies 12C,16O(from 1.02Vb 1.64Vb)+169Tm systems. Experimental EFs have analysed framework statistical model code PACE4 based on idea...
On
The thermodynamical conditions and the neutron density produced in a laser-induced implosion of deuterium-tritium (DT) filled capsule at National Ignition Facility (NIF) are closest laboratory analog stellar conditions. We plan to investigate neutron-induced reactions on 40 Ar, namely Ar( n , 2 ) 39 t 1/2 =268 y), γ) 41 Ar(110 min) potential rapid two-neutron capture reaction Ar(2 42 Ar(33 y) an Ar-loaded DT capsule. chemical inertness noble gas Ar enables reliable collection products.
The cross-section of the thermal neutron capture 41 Ar(n,γ) 42 Ar( t 1/2 =32.9 y) reaction was measured by irradiating a 40 Ar sample at high-flux reactor Institut Laue-Langevin (ILL) Grenoble, France. signature two-neutron has been observed measuring growth curve and identifying 1524.6 keV γ-lines shorter-lived K(12.4 h) β − daughter Ar. Our preliminary value cross section is 240(80) mb 25.3 meV. For first time, direct counting performed using ultra-high sensitivity technique noble gas...