R. Dubey

ORCID: 0000-0002-2320-9013
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About
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Research Areas
  • Nuclear physics research studies
  • Nuclear Physics and Applications
  • Nuclear reactor physics and engineering
  • Astronomical and nuclear sciences
  • Atomic and Molecular Physics
  • Cold Fusion and Nuclear Reactions
  • Quantum Chromodynamics and Particle Interactions
  • Advanced NMR Techniques and Applications
  • Particle physics theoretical and experimental studies
  • High-Energy Particle Collisions Research
  • Electron and X-Ray Spectroscopy Techniques
  • Particle Detector Development and Performance
  • Nuclear Materials and Properties
  • Advanced Sensor and Energy Harvesting Materials
  • Magnetic confinement fusion research
  • Neutrino Physics Research
  • Isotope Analysis in Ecology
  • X-ray Spectroscopy and Fluorescence Analysis
  • High-pressure geophysics and materials
  • Radiation Detection and Scintillator Technologies
  • Advanced Chemical Physics Studies
  • Gas Sensing Nanomaterials and Sensors
  • Particle accelerators and beam dynamics
  • Dark Matter and Cosmic Phenomena
  • Additive Manufacturing and 3D Printing Technologies

University of Szczecin
2023-2025

Institute of Physics
2023-2025

University of Warsaw
2024

National Centre for Nuclear Research
2024

Inter-University Accelerator Centre
2013-2024

University of the Western Cape
2020-2023

Panjab University
2016-2021

Kurukshetra University
2021

Central University of Kerala
2021

Andhra University
2021

In recent years, flexible conductive materials have attracted considerable attention for their potential use in energy storage devices, touch panels, sensors, memristors, and other applications.

10.1039/d4ra01168f article EN cc-by-nc RSC Advances 2024-01-01

The electron screening effect is responsible for a significant increase in the nuclear reaction rates metals at very low energies. This dependent on local crystal structure of metallic target and occurrence defects or additional elemental impurities crystal. Here, we studied deuteron–deuteron fusion reactions zirconium targets previously implanted with carbon oxygen ions. 2H(d,p)3H yield was measured two deuteron energies, 8 20 keV, order to determine strength its dependence density...

10.3390/ma18061331 article EN Materials 2025-03-18

The influence of neutron transfer coupling on surface diffuseness has been thoroughly investigated in the study carbon-induced fusion reactions. Through analysis experimental measurements using advanced coupled-channel computational frameworks, we have examined how exchange processes modify nuclear interaction potentials with a particular focus parameters. findings reveal that mechanisms substantially contribute to reducing values, this effect being particularly pronounced reactions...

10.3390/atoms13040033 article EN cc-by Atoms 2025-04-09

A technique for measuring high-energy electrons using Si detectors of various thicknesses that are much smaller than the range examined is presented. The advantages method discussed on basis electron-positron pair creation recently studied in deuteron-deuteron fusion reactions at very low energies. Careful Geant 4 Monte Carlo simulations enabled to identify main spectral contributions emitted and positrons resulting from energy loss mechanisms scattering processes within target, detector...

10.1016/j.measurement.2024.114392 article EN cc-by Measurement 2024-02-23

Background: Couplings with various reaction channels are known to enhance sub-barrier fusion cross sections by several orders in magnitude. However, a few open questions still remain. For example, the influence of higher order static deformations on is yet be comprehensively understood.Purpose: We study role hexadecapole nuclear deformation effect sections. Also, this work aims extract $({\ensuremath{\beta}}_{4})$ nuclei lanthanide region.Method: The evaporation residue (ER) excitation...

10.1103/physrevc.93.054622 article EN Physical review. C 2016-05-25

Electron emission in the deuteron-deuteron reaction supporting existence of single-particle threshold resonance <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mmultiscripts><a:mi>He</a:mi><a:mprescripts/><a:none/><a:mn>4</a:mn></a:mmultiscripts></a:math> has been observed for first time. The measured electron energy spectrum and electron-proton branching ratio agree very well with assumed electron-positron pair creation decay <b:math...

10.1103/physrevc.109.l021601 article EN cc-by Physical review. C 2024-02-12

Abstract We have measured the fission fragment mass-angle and mass-total kinetic energy (TKE) distributions for neutron-deficient 190 Pt compound nucleus (CN) populated via 12 C + 178 Hf reaction, at around above barrier energies. No correlation was observed in of signifying absence quasi-fission events studied reaction. The mass-TKE expected triangular shape TKE are well described with single Gaussian fits, mean shows parabolic dependence on mass as predicted based liquid drop behaviour....

10.1088/1361-6471/ad1f2f article EN Journal of Physics G Nuclear and Particle Physics 2024-01-16

A study of low-energy incomplete fusion was done by the measurements excitation functions evaporation residues produced in $^{16}\mathrm{O}+^{148}\mathrm{Nd}$ system at energies $\ensuremath{\approx}4--7$ MeV/nucleon. The stacked foil activation technique using offline $\ensuremath{\gamma}$-ray spectrometry employed. Significant enhancements were found measured cross sections from theoretical predictions pace-4 for populated through $\ensuremath{\alpha}$-emission channels. This enhancement...

10.1103/physrevc.100.024621 article EN Physical review. C 2019-08-22

We used the $^{138}\mathrm{Ba}(d,\ensuremath{\alpha})$ reaction to carry out an in-depth study of states in $^{136}\mathrm{Cs}$, up around 2.5 MeV. In this Letter, we place emphasis on hitherto unobserved below first ${1}^{+}$ level, which are important context solar neutrino and fermionic dark matter (FDM) detection large-scale xenon-based experiments. identify for time candidate metastable would allow a real-time FDM events xenon detectors, with high background suppression. Our results...

10.1103/physrevlett.131.052501 article EN Physical Review Letters 2023-07-31

Excitation functions for the 11 evaporation residues populated through complete and/or incomplete fusion in $^{16}\mathrm{O}+^{124}\mathrm{Sn}$ system at low projectile energies $\ensuremath{\approx}3\ensuremath{-}7\phantom{\rule{0.16em}{0ex}}\mathrm{MeV}/\mathrm{nucleon}$ have been measured. Recoil catcher activation technique followed by offline $\ensuremath{\gamma}$-ray spectrometry has employed. Some of are found to contributions from precursor decays. The separated out measured...

10.1103/physrevc.97.064610 article EN Physical review. C 2018-06-11

Fission-fragment mass distributions were measured for 225,227Pa nuclei formed in fusion reactions of 19F + 206,208Pb around barrier energies. Mass-angle correlations do not indicate any quasi-fission like events this bombarding energy range. Mass fitted by Gaussian distribution and variance extracted. At below-barrier energies, the was found to increase with decrease both nuclei. Results from present work compared existing data induced fission 224,226Th 228U Enhancement at energies shows...

10.1016/j.physletb.2015.11.060 article EN cc-by Physics Letters B 2015-12-01

Pre- and post-scission $\ensuremath{\alpha}$-particle multiplicities have been measured for the reaction $^{16}O+^{194}Pt$ at 98.4 MeV forming $^{210}Rn$ compound nucleus. $\ensuremath{\alpha}$ particles were various angles in coincidence with fission fragments. Moving source technique was used to extract pre- contributions particle multiplicity. Study of mechanism using different probes are helpful understanding detailed dynamics. The neutron this reported earlier. neutrons reproduced...

10.1103/physrevc.96.054605 article EN Physical review. C 2017-11-20

The multinucleon transfer reaction or incomplete fusion (ICF) is a powerful tool to study fission of exotic nuclei that cannot be formed by stable heavy-ion reactions. In the present work, mass distributions fragments (FFs) from fissioning $^{241,242,243,244}\mathrm{Pu}$ and $^{240,241}\mathrm{Np}$ populated in ICF reactions on $^{6,7}\mathrm{Li}+^{238}\mathrm{U}$ systems have been studied. Among these, $^{244}\mathrm{Pu},\phantom{\rule{0.16em}{0ex}}^{243}\mathrm{Pu}$, $^{241}\mathrm{Np}$...

10.1103/physrevc.98.031601 article EN Physical review. C 2018-09-24

The study of the coupling to collective states $^{28}\mathrm{Si}$ projectile and $^{154}\mathrm{Sm}$ target in fusion mechanism is reported. Understanding such couplings important as they influence barrier height formation probability compound nuclei, which turn may be related synthesis superheavy elements heavier systems. In present work, before performing coupled-channel calculations, we wish obtain an experimental signature excitation through distribution (BD) study. To this end, BDs...

10.1103/physrevc.94.034613 article EN Physical review. C 2016-09-20

The neutron emission in coincidence with the fragments have been investigated for $^{48}\mathrm{Ti}+^{208}\mathrm{Pb}$ reaction populating near superheavy compound nucleus $^{256}\mathrm{Rf}$ at an excitation energy of 57.4 MeV. National Array Neutron Detectors facility is used a precise determination prescission (${M}_{n}^{\mathrm{pre}}$) and postscission (${M}_{n}^{\mathrm{post}}$) multiplicities as function fission observables. A moving source fitting procedure has adopted to deduce...

10.1103/physrevc.98.014606 article EN Physical review. C 2018-07-10

In the present work we have measured pre- and post-scission neutron multiplicities $({M}_{\mathrm{pre}}$ ${M}_{\mathrm{post}})$ from two compound nuclei, namely $^{192,202}\mathrm{Po}$ populated by $^{48}\mathrm{Ti}+^{144,154}\mathrm{Sm}$ systems at 72 MeV of excitation energy using National Array Neutron Detectors (NAND) facility IUAC, New Delhi. Statistical model analysis has been performed for along with already existing data $^{12}\mathrm{C}+^{194}\mathrm{Pt}$...

10.1103/physrevc.98.034601 article EN Physical review. C 2018-09-04

The triton angular distribution for the 12C(7Li,t)16O* reaction is measured at 20 MeV, populating discrete states of 16O. Continuum discretized coupled channel calculations are used to extract alpha spectroscopic properties 16O instead distorted wave born approximation theory include effects breakup on transfer process. reduced width, factors and asymptotic normalization constant (ANC) extracted. error in factor about 35% that ANC 27%.

10.1088/0954-3899/44/1/015102 article EN Journal of Physics G Nuclear and Particle Physics 2016-12-05

Background: Giant dipole resonance (GDR) has been used as an important tool for studying nuclear properties in hot rotating nuclei. Exclusive measurements using low-energy $\ensuremath{\gamma}$-ray multiplicity filters provide more control over angular momentum selection such measurements.Purpose: Study the effect of and temperature on deformations GDR widths at high excitation energies ${}^{144}$Sm.Methods: $\ensuremath{\gamma}$ rays were carried out ${}^{28}$Si+${}^{116}$Cd reaction...

10.1103/physrevc.88.024312 article EN Physical Review C 2013-08-16

The fission fragment mass distributions have been measured in the reactions $^{16}\mathrm{O}+\phantom{\rule{0.16em}{0ex}}^{184}\mathrm{W}$ and $^{19}\mathrm{F}+\phantom{\rule{0.16em}{0ex}}^{181}\mathrm{Ta}$ populating same compound nucleus ${^{200}\mathrm{Pb}}^{*}$ at similar excitation energies. It is found that widths of increase monotonically with energy, indicating absence quasifission for both reactions. This contrary to two recent claims presence above-mentioned

10.1103/physrevc.94.024617 article EN Physical review. C 2016-08-24
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