NSR Query Results
Output year order : Descending NSR database version of May 10, 2024. Search: Author = R.Prajapat Found 14 matches. 2023KU03 J.Phys.(London) G50, 025106 (2023) Facets of reaction mechanism in ^{6}Li+^{181}Ta system NUCLEAR REACTIONS ^{181}Ta(^{6}Li, X)^{183}Os/^{182}Os/^{183}Re/^{183}Ta/^{182}Ta/^{180}Ta, E=4.5-7.1 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced σ. Comparison with EMPIRE-3.2.2, PACE4 calculations. The 14 UD BARC-TIFR Pelletron Accelerator facility in Mumbai, India.
doi: 10.1088/1361-6471/acaffc
2023PR09 Phys.Rev. C 107, 064616 (2023) R.Prajapat, M.Maiti, R.Kumar, M.Sagwal, Gonika, C.Kumar, R.Biswas, J.Gehlot, S.Nath, N.Madhavan Investigation of the role of neutron transfer and fusion hindrance in ^{28}Si + ^{158}Gd at deep sub-barrier energies NUCLEAR REACTIONS ^{158}Gd(^{28}Si, X), E=107-140 MeV; measured reaction products, evaporation residues; deduced fusion σ(E), fusion excitation functions, fusion barrier distribution (BD), astrophysical S-factor, logarithmic derivatives, fusion hindrance threshold energy. Comparison of fusion excitation functions and BD of ^{28}Si+^{158}Gd with ^{30}Si+^{156}Gd reaction. Systematics of fusion hindrance threshold energy as a function of entrance channel parameter for systems ^{28}Si+^{158}Gd, ^{64}Ni+^{100}Mo, ^{60}No+^{89}Y, ^{64}Ni+^{64}Ni, ^{28}Si+^{30}Si, ^{28}Si+^{64}Ni, ^{11}B+^{197}Au, ^{12}C+^{198}Pt, ^{16}O+^{208}Pb. Obtained cross-sections analyzed in the framework of CCFULL and ECC. Compared with theoretical model calculations. Recoil mass spectrometer HIRA at 15 UD Pelletron accelerator facility (IUAC, New Delhi).
doi: 10.1103/PhysRevC.107.064616
2022KO03 Phys.Rev. C 105, 014607 (2022) E.M.Kozulin, G.N.Knyazheva, I.M.Itkis, M.G.Itkis, Y.S.Mukhamejanov, A.A.Bogachev, K.V.Novikov, V.V.Kirakosyan, D.Kumar, T.Banerjee, M.Cheralu, M.Maiti, R.Prajapat, R.Kumar, G.Sarkar, W.H.Trzaska, A.N.Andreyev, I.M.Harca, A.Mitu, E.Vardaci Fission of ^{180, 182, 183}Hg^{*} and ^{178}Pt^{*} nuclei at intermediate excitation energies NUCLEAR REACTIONS ^{142}Nd(^{36}Ar, F)^{178}Pt^{*}, E=158, 169, 181 MeV; ^{144}Sm(^{36}Ar, F)^{180}Hg^{*}, E=158, 181 MeV; ^{142,143}Nd(^{40}Ca, F)^{182}Hg^{*}/^{183}Hg^{*}, E=158, 169, 181 MeV; measured binary reaction products in coincidence mode using the double-arm time-of-flight spectrometer CORSET, consisting of a compact start detector and a position-sensitive stop detector of microchannel plates at the U400 cyclotron Flerov laboratory of Nuclear Reactions, Dubna; deduced mass-energy distributions of fission fragments at energies near and above the Coulomb barrier, mass-total kinetic energy (M-TKE) distribution contours of primary binary fragments, mass yields, fission fragments mass yields, asymmetric fission of preactinide nuclei, existence of well-deformed proton shell at Z≈36 and a less deformed proton shell at Z≈46. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.105.014607
2022PR05 Phys.Rev. C 105, 064612 (2022) R.Prajapat, M.Maiti, R.Kumar, M.Sagwal, Gonika, C.Kumar, R.Biswas, J.Gehlot, S.Nath, N.Madhavan Fusion and back-angle quasielastic measurements in ^{30}Si + ^{156}Gd near the Coulomb barrier NUCLEAR REACTIONS ^{156}Gd(^{30}Si, X), (^{30}Si, ^{30}Si'), E=108-136 MeV; measured reaction products, evaporation residues; deduced fusion σ(Ε), quasielastic scattering σ(θ) fusion barrier distribution, fusion excitation function, quasielastic scattering excitation function, Analysis within the framework of coupled channel predictions using CCFULL and ECC model codes. Comparison to other experimental data and one-dimensional barrier penetration model (1DBPM) calculations. Recoil mass spectrometer - the heavy ion reaction analyzer (HIRA) combined with MWPC and SSSD detectors at 15UD Pelletron accelerator facility at the Inter-University Accelerator Center (IUAC), New Delhi.
doi: 10.1103/PhysRevC.105.064612
2021BO22 Phys.Rev. C 104, 024623 (2021) A.A.Bogachev, E.M.Kozulin, G.N.Knyazheva, I.M.Itkis, M.G.Itkis, K.V.Novikov, D.Kumar, T.Banerjee, I.N.Diatlov, M.Cheralu, V.V.Kirakosyan, Y.S.Mukhamejanov, A.N.Pan, I.V.Pchelintsev, R.S.Tikhomirov, I.V.Vorobiev, M.Maiti, R.Prajapat, R.Kumar, G.Sarkar, W.H.Trzaska, A.N.Andreyev, I.M.Harca, E.Vardaci Asymmetric and symmetric fission of excited nuclei of ^{180, 190}Hg and ^{184, 192, 202}Pb formed in the reactions with ^{36}Ar and ^{40, 48}Ca ions NUCLEAR REACTIONS ^{144}Sm(^{36}Ar, X)^{180}Hg^{*}, E=158, 181 MeV; ^{154}Sm(^{36}Ar, X)^{190}Hg^{*}, E=158, 181 MeV; ^{144}Sm(^{40}Ca, X)^{184}Pb^{*}, E=180, 190 MeV; ^{144}Sm(^{48}Ca, X)^{192}Pb^{*}, E=182, 188, 202 MeV; ^{154}Sm(^{48}Ca, X)^{202}Pb^{*}, E=173, 183, 194 MeV; measured binary reaction products in coincidence mode from the excited states of the compound nuclei using the double-arm time-of-flight spectrometer CORSET at the U400 cyclotron facility of Flerov Laboratory of Nuclear Reactions (FLNR), Dubna; deduced mass-total kinetic energy (TKE) distributions of binary fragments, mass and TKE distributions of fission fragments, contributions of symmetric and asymmetric fissions, well deformed proton shell at Z≈36 and less deformed proton shell at Z≈46.
doi: 10.1103/PhysRevC.104.024623
2021KU16 Eur.Phys.J. A 57, 209 (2021) R.Kumar, M.Maiti, G.Sarkar, M.Sagwal, P.Kaur, R.Prajapat, T.N.Nag, S.Sodaye Study of excitation functions and insights into the reaction mechanisms of ^{6}Li fusion in Cu NUCLEAR REACTIONS Cu(^{6}Li, X)^{66}Ge/^{67}Ge/^{69}Ge/^{65}Ga/^{66}Ga/^{67}Ga/^{68}Ga/^{62}Zn/^{63}Zn/^{65}Zn, E=3.6-7.1 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced σ. Comparison with PACE4, EMPIRE-3.2.2 and ALICE20 calculations.
doi: 10.1140/epja/s10050-021-00520-w
2021KU18 Phys.Rev. C 104, 014602 (2021) D.Kumar, M.Maiti, R.Prajapat, A.Chauhan, R.Biswas, J.Gehlot, S.Nath, R.Kumar, N.Madhavan, G.N.Jyothi, R.N.Sahoo, M.M.Shaikh, V.Srivastava Analysis of mass-separated evaporation residues formed in ^{32}S + ^{70, 68}Zn fusion reactions: The special case of ^{97, 95}Ru NUCLEAR REACTIONS ^{68}Zn(^{32}S, X), E=130-150 MeV; ^{70}Zn(^{32}S, X), E=115-135 MeV; measured produced evaporation residues (ERs) transported to the focal plane of HIRA detector array and a multiwire proportional counter (MWPC), Eγ, Iγ from the radioactive ERs at the 15 UD Pelletron facility of the Inter-University Accelerator Centre (IUAC), New Delhi; ^{95m}Tc, ^{97,97m,98}Rh, ^{97m,98}Ru; measured γ-ray spectra from the decays of the produced ERs; deduced two-dimensional ΔE vs X-position matrices of different mass product, yields of evaporation residues and compared with theoretical yields using semimicroscopic Monte Carlo code TERS. ^{95,97}Ru; deduced maximum production yields.
doi: 10.1103/PhysRevC.104.014602
2021KU32 Bull.Rus.Acad.Sci.Phys. 85, 1479 (2021) D.Kumar, E.M.Kozulin, G.N.Knyazheva, M.Maiti, I.M.Itkis, A.A.Bogachev, K.V.Novikov, M.Cheralu, T.Banerjee, I.N.Diatlov, N.I.Kozulina, I.V.Pchelintsev, I.V.Vorobiev, A.N.Pan, R.Prajapat, R.Kumar, E.Vardaci, W.H.Trzaska, A.Andreyev, I.M.Harca Investigation on Competing Fission Modes in ^{178}Pt^{*} Produced by ^{36}Ar + ^{142}Nd Reaction up to High Excitation Energies NUCLEAR REACTIONS ^{142}Nd(^{36}Ar, X)^{178}Pt, E=158-222 MeV; measured fission products, TOF; deduced mass-energy distributions of binary fission fragments, total kinetic energies, asymmetric and symmetric modes. Comparison with theoretical systematics. The double arm time-of-flight spectrometer CORSET.
doi: 10.3103/S1062873821120194
2021PR01 Phys.Rev. C 103, 014608 (2021) Fusion-fission events in the ^{11}B + ^{181}Ta reaction up to 5.7 MeV/nucleon energy NUCLEAR REACTIONS ^{181}Ta(^{11}B, 6n)^{186}Pt, (^{11}B, 5n)^{187}Pt, (^{11}B, 4n)^{188}Pt, (^{11}B, 3n)^{189}Pt, (^{11}B, 5np)^{186}Ir/^{186m}Ir, (^{11}B, 4np)^{187}Ir, (^{11}B, 3np)^{188}Ir, (^{11}B, 5nα)^{183m}Os, (^{11}B, F)^{24}Na/^{34m}Cl/^{66}Ge/^{74m}Br/^{83}Br/^{77}Kr/^{87m}Sr/^{90}Mo/^{97m}Rh/^{103}Cd/^{108}In/^{109}In/^{110m}In/^{115}Ag/^{123}Xe/^{129}Sb/^{130}Sb/^{131}La/^{137}Nd/^{139m}Nd/^{149}Nd/^{160m}Ho, E=53.5, 54.9, 56.6, 58.7, 59.6, 62.4 MeV; measured activation σ(E) by off-line Eγ, Iγ measurements at 14UD BARC-TIFR Pelletron facility; deduced σ(E) of residues and fission fragments, complete and incomplete fusion evaporation σ(E), isotopic, isobaric and isomeric yields as function of beam energy, isomeric cross-section ratios, preequilibrium (PEQ) reaction strength in ^{181}Ta(^{11}B, 3n)^{189}Pt, and compared with experimental data for other reaction systems. Comparison with theoretical calculations using statistical model codes EMPIRE3.2.2, and PACE4. Comparison of measured isotopic yield distributions for ^{181}Ta, ^{232}Th, ^{238}U(^{11}B, F), ^{181}Ta(^{16}O, F), ^{169}Tm(^{19}F, F), and ^{238}U(^{22}Ne, F). Comparison of measured reduced fusion excitation functions for ^{159}Tb, ^{181}Ta, ^{209}Bi(^{11}B, X), ^{159}Tb, ^{181}Ta(^{12}C, X), and ^{174,176}Yb(^{16}O, X).
doi: 10.1103/PhysRevC.103.014608
2021PR04 Phys.Rev. C 103, 034620 (2021) Probing the influence of incomplete fusion in the ^{6}Li + ^{89}Y reaction up to 7.2 MeV/nucleon energy NUCLEAR REACTIONS ^{89}Y(^{6}Li, 2n)^{93m}Mo, (^{6}Li, 4n)^{91}Mo, (^{6}Li, 5n), ^{90}Mo, (^{6}Li, 2np)^{92m}Nb, (^{6}Li, 4np)^{90}Nb, (^{6}Li, 2nα)^{89m}Zr/^{89}Zr, (^{6}Li, 3nα)^{88}Zr, (^{6}Li, pα)^{90m}Y, (^{6}Li, 3npα)^{87m}Y, (^{6}Li, 2α)^{87m}Sr, E=23-43 MeV; measured Eγ, Iγ, σ(E) by off-line γ-spectrometry at the 14UD BARC-TIFR Pelletron facility. ^{87m}Sr, ^{89,89m}Zr, ^{90m}Y, ^{90,92m}Nb, ^{93m}Mo; measured activity and half-lives of their decays at E(^{6}Li)=23.8 MeV for ^{93m}Mo, ^{90m}Y, 33.5 MeV for ^{93m}Mo, ^{90,92m}Nb, and 42.7 MeV for ^{89,89m}Zr, ^{87m}Sr. Comparison with theoretical cross-sections in the framework of EMPIRE3.2.2, and fusion l-distribution using CCFULL code; estimated complete fusion (CF) σ(E), incomplete fusion (ICF) σ(E) in α-emitting channels, and strength of incomplete fusion (FICF).
doi: 10.1103/PhysRevC.103.034620
2020CH47 Phys.Rev. C 102, 064606 (2020) A.Chauhan, R.Prajapat, G.Sarkar, M.Maiti, R.Kumar, Malvika, Gonika, J.Gehlot, S.Nath, A.Parihari, N.Madhavan Evaporation residue cross section in the ^{37}Cl + ^{68}Zn fusion reaction near the Coulomb barrier NUCLEAR REACTIONS ^{68}Zn(^{37}Cl, X), (^{37}Cl, 4n)^{101}Ag, (^{37}Cl, 5n)^{100}Ag, (^{37}Cl, 3np)^{101}Pd, (^{37}Cl, 4np)^{100}Pd, (^{37}Cl, 5np)^{99}Pd, (^{37}Cl, nα)^{100}Rh, (^{37}Cl, 2nα)^{99}Rh, (^{37}Cl, 3nα)^{98}Rh, (^{37}Cl, 4nα)^{97}Rh, (^{37}Cl, 2npα)^{98}Ru, (^{37}Cl, 3npα)^{97}Ru, E=94.8-138.9 MeV; measured recoiling evaporation residues (ERs), time-of-flight using the recoil mass spectrometer HIRA at the 15UD Pelletron accelerator facility of IUAC-New Delhi; deduced two-dimensional mass spectrum, fusion σ(E), total ER σ(E) for the production of individual residual nuclei, fragmentation potentials. Comparison with theoretical calculations using CCFULL code for coupled channel model, PACE4 code for statistical model, DCM code for non-statistical model.
doi: 10.1103/PhysRevC.102.064606
2020KU24 Bull.Rus.Acad.Sci.Phys. 84, 1001 (2020) D.Kumar, E.M.Kozulin, M.Cheralu, G.N.Knyazheva, I.M.Itkis, M.G.Itkis, K.V.Novikov, A.A.Bogachev, N.I.Kozulina, I.N.Diatlov, I.V.Pchelintsev, I.V.Vorobiev, T.Banerjee, Y.S.Mukhamejanov, A.N.Pan, V.V.Saiko, P.P.Singh, R.N.Sahoo, A.N.Andreyev, D.M.Filipescu, M.Maiti, R.Prajapat, R.Kumar Study of Mass-Asymmetric Fission of ^{180, 190}Hg Formed in the ^{36}Ar + ^{144, 154}Sm Reactions NUCLEAR REACTIONS ^{36}Ar(^{144}Sm, X), (^{154}Sm, X)^{180}Hg/^{190}Hg, E= 158, 181, 222 MeV; measured reaction products; deduced asymmetric fission of ^{180,190}Hg with the most probable masses of light and heavy fragments of 79 and 101 amu, and 84 and 106 amu, respectively. Two components manifesting the symmetric and asymmetric fission modes are observed in the kinetic energy distributions.
doi: 10.3103/S1062873820080213
2020PR02 Phys.Rev. C 101, 024608 (2020) Measurement of residual cross sections in the ^{7}Li + ^{89}Y reaction up to 5.7 MeV/nucleon and analysis of fusion mechanisms NUCLEAR REACTIONS ^{89}Y(^{7}Li, 3n)^{93m}Mo, (^{7}Li, 3np)^{92m}Nb, (^{7}Li, 3nα)^{89}Zr, (^{7}Li, pα)^{91m}Y, (^{7}Li, npα)^{90m}Y, E=19-40 MeV; measured Eγ, Iγ, σ(E) by off-line γ-spectrometry at the 14UD BARC-TIFR Pelletron facility; deduced complete fusion (CF) and incomplete fusion (ICF) cross sections, ICF strength fraction using the present and earlier data. Comparison with predictions of equilibrium and pre-equilibrium reaction models using EMPIRE3.2.2 and ALICE19 codes.
doi: 10.1103/PhysRevC.101.024608
2020PR05 Phys.Rev. C 101, 064620 (2020) Analysis of the dynamics of ^{7}Li-induced fusion with ^{nat}Zr up to 44 MeV NUCLEAR REACTIONS Zr(^{7}Li, X)^{96}Tc/^{95}Tc/^{95m}Tc/^{94}Tc/^{94m}Tc/^{93}Tc/^{93m}Tc/^{93m}Mo/^{96}Nb/^{90}Nb, E=28-44 MeV; measured Eγ, Iγ, complete fusion (CF) and incomplete fusion (ICF) σ(E) for reaction residues using offline γ-spectrometry using HPGe detector at 14UD BARC-TIFR Pelletron facility; deduced isomeric cross section ratios (ICR). Comparison with theoretical predictions using EMPIRE3.2 and CCFULL codes, and with previous experimental cross sections.
doi: 10.1103/PhysRevC.101.064620
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