NSR Query Results
Output year order : Descending NSR database version of May 1, 2024. Search: Author = U.Gupta Found 25 matches. 2023YA11 Phys.Rev. C 107, 044605 (2023) A.Yadav, G.Ram, M.S.Asnain, I.Majeed, M.Shuaib, V.R.Sharma, I.Bala, U.Gupta, S.Gupta, D.P.Singh, P.P.Singh, M.Sharma, R.Kumar, B.P.Singh, R.Prasad Understanding the low-energy incomplete fusion reactions NUCLEAR REACTIONS 159Tb(18O, 3n), (18O, 4n), (18O, 5n), (18O, 6n), (18O, 2nα), (18O, 5nα), (18O, 6nα), (18O, 5npα), E=82, 95, 97, 100 MeV; measured Eγ, Iγ; deduced σ(E), contributions of complete and incomplete fusion channels. Comparison to predictions done using the PACE4 code. Systematics of incomplete fusion with different projectiles - 12C, 13C, 14N, 16O, 18O, 19F, 20Ne. Activation technique experiment at the Inter-University Accelerator Centre (IUAC, New Delhi).
doi: 10.1103/PhysRevC.107.044605
2022MA13 Nucl.Phys. A1021, 122421 (2022) I.Majeed Bhat, Mohd.S.M.S.Asnain, V.R.Sharma, A.Yadav, M.K.Sharma, P.P.Singh, D.P.Singh, U.Gupta, R.N.Sahoo, A.Sood, M.Kaushik, R.Kumar, B.P.Singh, R.Prasad Effect of projectile structure on break-up fusion for 14N + 175Lu system at intermediate energies NUCLEAR REACTIONS 175Lu(14N, X)184Pt/185Pt/186Pt/183Ir/184Ir/185Ir/182Os/183Os/181Re/177W/178Ta, E=87.11 MeV; measured reaction products, Eγ, Iγ; deduced σ. Comparison with PACE4 predictions. The Inter University Accelerator, New Delhi, India.
doi: 10.1016/j.nuclphysa.2022.122421
2022MA25 Phys.Rev. C 105, 054607 (2022) I.Majeed Bhat, M.Shuaib, M.S.Asnain, M.K.Sharma, A.Yadav, V.R.Sharma, P.P.Singh, D.P.Singh, S.Gupta, U.Gupta, R.N.Sahoo, A.Sood, M.Kaushik, S.Kumar, R.Kumar, B.P.Singh, R.Prasad Role of precursor nuclei in heavy-ion induced reactions at low energies NUCLEAR REACTIONS 175Lu(14N, 4np), E=79.68, 87.11 MeV; 159Tb(12C, 3np), E=69.15, 77.77 MeV; 159Tb(13C, 4np), E=77.87, 84.59 MeV; measured Eγ, Iγ; deduced σ(E). Separated yields of the isotope produced in the direct reaction from feeding caused by decay of the isotopes from other channels. Pelletron accelerator facility of the Inter-University Accelerator Centre(IUAC), New Delhi. comparison to theoretical estimations. RADIOACTIVITY 184Pt(β+), (EC) [from 175Lu(14N, 5n), E=79.68, 87.11 MeV]; 167Lu(EC) [from 159Tb(13C, 5n), E=77.87, 84.59 MeV; 159Tb(12C, 4n), E=69.15, 77.77 MeV]; measured Eγ, Iγ; deduced T1/2. Comparison to other experimental data.
doi: 10.1103/PhysRevC.105.054607
2021AS08 Phys.Rev. C 104, 034616 (2021) M.S.Asnain, M.Shuaib, I.Majeed, M.K.Sharma, V.R.Sharma, A.Yadav, D.P.Singh, P.P.Singh, U.Gupta, R.N.Sahoo, A.Sood, M.Kaushik, S.Kumar, R.Kumar, B.P.Singh, R.Prasad Effect of non-α-cluster projectile on incomplete-fusion dynamics: Experimental study of the 14N + 181Ta NUCLEAR REACTIONS 181Ta(14N, 3n)192Hg, (14N, 4n)191Hg/191mHg, (14N, 5n)190Hg, (14N, 6n)189Hg/189mHg, (14N, 3np)191Au, (14N, 4np)190Au, (14N, 5np)189Au/189mAu, (14N, 2nα)189Pt, (14N, 4nα)187Pt, (14N, 5nα)186Pt, (14N, 3npα)187Ir, (14N, 4npα)186Ir/186mIr, (14N, 5npα)185Ir, (14N, 4n2α)183Os, (14N, 5np2α)181Re, E=65.53, 67.50, 69.47, 71.54, 73.65, 75.65, 77.08, 79.51, 81.42, 83.05, 85.17, 87.07 MeV; measured off-line Eγ, Iγ, σ(E) for radio-nuclides populated via complete fusion (CF) and/or incomplete fusion (ICF processes) by activation method at the ion-beam facility of the IUAC-New Delhi; deduced total fusion, total complete fusion, and total incomplete fusion σ(E). Comparison with statistical model calculations using PACE4 code. 190Hg; measured nominal half-life from γ-decay curves as an example for the purpose of correct identification of different radioactive nuclei produced through various reaction channels.
doi: 10.1103/PhysRevC.104.034616
2021OJ01 Phys.Rev. C 104, 034615 (2021) A.Ojha, S.Gupta, U.Gupta, P.P.Singh, A.Yadav, D.P.Singh, M.Shuaib, B.P.Singh, R.Prasad Mass-number dependence of statistical model parameters and its impact on incomplete fusion fraction calculations NUCLEAR REACTIONS 181Ta(16O, 3n)194Tl, (16O, 4n)193Tl, (16O, 5n)192Tl, (16O, 3np)193Hg, (16O, 4np)192Hg, (16O, 5np)191Hg, E=75-105 MeV; 165Ho(12C, 3n)174Ta, (12C, 4n)173Ta, (12C, 5n)172Ta, (12C, 3np)173Hf, E=55-85 MeV; 163Dy(14N, 3n)174Ta, (14N, 4n)173Ta, (14N, 5n)172Ta, E=65-85 MeV; 74Ge(16O, 4n)86Zr, (16O, 2np)87Y, (16O, 3np)86Y, (16O, 4np)85Y, E=50-110 MeV; calculated σ(E) using statistical model based PACE4 code, with optical model potential (OMP) parameters, summed σ(E) using different sets of OMP parameters and impact on incomplete fusion (ICF) fraction, and effect of deformation parameter β2 on incomplete fusion. Comparison with experimental data.
doi: 10.1103/PhysRevC.104.034615
2019SA17 Phys.Rev. C 99, 024607 (2019) R.N.Sahoo, M.Kaushik, A.Sood, P.Kumar, A.Sharma, S.Thakur, P.P.Singh, P.K.Raina, M.M.Shaikh, R.Biswas, A.Yadav, J.Gehlot, S.Nath, N.Madhavan, V.Srivastava, M.K.Sharma, B.P.Singh, R.Prasad, A.Rani, A.Banerjee, U.Gupta, N.K.Deb, B.J.Roy Sub-barrier fusion in the 37Cl + 130Te system NUCLEAR REACTIONS 130Te(37Cl, X), E=121-155 MeV; measured reaction products, evaporation residues, time of flight of evaporation residue, fusion σ(E) using the HIRA recoil mass spectrometer at the 15UD Pelletron accelerator of IUAC-New Delhi; deduced fusion barrier distributions, astrophysical S factor, logarithmic derivative L(E) factor. Comparison with coupled-channels code calculations using CCFULL code. Systematics of reduced fusion excitation functions of 37Cl projectiles on 58,60,62,64Ni, 130Te targets at sub-barrier energies.
doi: 10.1103/PhysRevC.99.024607
2019SO21 Acta Phys.Pol. B50, 291 (2019) A.Sood, P.Kumar, R.N.Sahoo, P.P.Singh, A.Yadav, V.R.Sharma, M.K.Sharma, D.P.Singh, U.Gupta, S.Aydin, R.Kumar, B.P.Singh, R.Prasad Entrance Channel Effects on Fission Fragment Mass Distribution in 12C + 169Tm System NUCLEAR REACTIONS 169Tm(12C, X), E= 77.18, 83.22, 89.25 MeV; measured Eγ, Iγ(t); deduced production σ of evaporation residues, isotopic yieldsmass distribution of fission fragments.
doi: 10.5506/aphyspolb.50.291
2018SA38 Acta Phys.Pol. B49, 585 (2018) R.N.Sahoo, M.Kaushik, A.Sood, P.Kumar, V.R.Sharma, A.Yadav, M.Shuaib, D.P.Singh, P.P.Singh, U.Gupta, M.K.Sharma, R.Kumar, B.P.Singh, S.Aydin, H.J.Wollersheim, R.Prasad Entrance Channel Effect on Incomplete Fusion NUCLEAR REACTIONS 169Tm(12C, x), E=5-7.5 MeV/nucleon; measured evaporation residues (ER) Eγ, Iγ(time); deduced 177Re σER; calculated σER using statistical model code PACE-IV with different level density parameter; calculated total (summed over all ERs) σT, complete and incomplete fusion σCF, σICF. 103Rh, 115In, 159Tb, 169Tm, 197Au(12C, x), E not given;103Rh, 159Tb, 169Tm(16O, x), E not given; measured reaction products Eγ, Iγ; deduced incomplete fusion fraction vs mass asymmetry (relative projectile-target velocity close to 0.05c vs asymmetry).
doi: 10.5506/aphyspolb.49.585
2017AL39 Nucl.Phys. A968, 403 (2017) R.Ali, M.Afzal Ansari, D.Singh, R.Kumar, D.P.Singh, M.K.Sharma, U.Gupta, B.P.Singh, P.D.Shidling, D.Negi, S.Muralithar, R.P.Singh, R.K.Bhowmik Observed side feeding in incomplete fusion dynamics in 16O + 160Gd reaction at energy ∼ 5.6 MeV/A: Spin distribution measurements NUCLEAR REACTIONS 160Gd(16O, x), E≈5.6 MeV/nucleon; measured Eγ, Iγ(θ), Ep, Ip(θ), Eα, Iα(θ), pγ-coin, αγ-coin using GDA (Gamma Detector Array) consisting of 12 n-type Compton suppressed HPGE working together with CPDA (Charged Particle Detector Array); deduced relative spin distributions (relative yields vs spin) of different reaction channels, evaporation residues yrast bands side feeding intensities, mean input angular momentum for different reaction channels.
doi: 10.1016/j.nuclphysa.2017.09.005
2017SO12 Phys.Rev. C 96, 014620 (2017) A.Sood, P.P.Singh, R.N.Sahoo, P.Kumar, A.Yadav, V.R.Sharma, Mohd.Shuaib, M.K.Sharma, D.P.Singh, U.Gupta, R.Kumar, S.Aydin, B.P.Singh, H.J.Wollersheim, R.Prasad Fission-like events in the 12C + 169Tm system at low excitation energies NUCLEAR REACTIONS 169Tm(12C, X)74mBr/74Kr/75Br/75Ge/75Kr/76Kr/77Kr/78As/79Rb/81Sr/84Br/85Zr/86Y/87Zr/89Rb/93Y/94Ru/95Ru/97Nb/98mNb/101Tc/102mTc/104Tc/104Ag/105Tc/105In/175Re/176Re/177Re/178Re/177W/173Ta/174Ta/175Ta/176Ta/171Lu, E=77.81, 83.22, 89.25 MeV; measured Eγ, Iγ, recoil-catcher activation technique, half-life of 74Kr decay, production σ(E) of fission products and evaporation residues, charge and mass distribution of fission fragments at the pelletron accelerator facility of IUAC-New Delhi; deduced fission as one of the competing modes of deexcitation of complete and/or incomplete fusion composites at low excitation energies. Comparison with calculations using PACE code. 181Ta(16O, X), E*=67.04 MeV; 159Tb(16O, X), E*=57.1 MeV; 169Tm(16O, X), E*=61.06 MeV; 232Th(7Li, X), E*=41.7 MeV; 232Th(11B, X), E*=55.7 MeV; 238U(11B, X), E*=67.4 MeV; 238U(22Ne, X), E*=64.5 MeV; 208Pb(20Ne, X), E*=46.4 MeV; analyzed previous experimental data for isotopic yield distributions.
doi: 10.1103/PhysRevC.96.014620
2012YA03 Phys.Rev. C 85, 034614 (2012) A.Yadav, V.R.Sharma, P.P.Singh, D.P.Singh, M.K.Sharma, U.Gupta, R.Kumar, B.P.Singh, R.Prasad, R.K.Bhowmik Large influence of incomplete fusion in 12C + 159Tb at Elab ≈ 4-7 MeV/nucleon NUCLEAR REACTIONS 159Tb(12C, X)160Ho/160mHo/161Ho/163Tm/165Tm/165Lu/167Yb/167Lu/168Lu/168mLu, E=54-88 MeV; measured Eγ, Iγ, production σ(E) for complete fusion and incomplete fusion; deduced total fusion cross section, percentage fraction of incomplete fusion (ICF), mass asymmetry dependence on ICF fraction. Gamma-activation technique. Comparison with statistical model code PACE4 and previous studies.
doi: 10.1103/PhysRevC.85.034614
2011YA17 Int.J.Mod.Phys. E20, 2133 (2011) A.Yadav, P.P.Singh, V.R.Sharma, U.Gupta, D.P.Singh, M.K.Sharma, B.P.Singh, R.Prasad, R.Kumar, R.P.Singh, S.Muralithar, R.K.Bhowmik Signature of pre-equilibrium-emission in forward-to-backward yield ratio measurement NUCLEAR REACTIONS 169Tm(16O, X)181Os/181Re/182Re/183Re/179W/181W/182W/179Ta/180Ta, E=5.6 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced normalized yield, yield ratios; deduced preequilibrium emission.
doi: 10.1142/S0218301311020198
2009GU24 Phys.Rev. C 80, 024613 (2009) U.Gupta, P.P.Singh, D.P.Singh, M.K.Sharma, A.Yadav, R.Kumar, S.Gupta, H.D.Bhardwaj, B.P.Singh, R.Prasad Disentangling full and partial linear momentum transfer events in the 16O+169Tm system at Eproj ≤ 5.4 MeV/nucleon NUCLEAR REACTIONS 169Tm(16O, X)171Lu/172Lu/171Hf/175Hf/181Re/181Os/182Os/182Ir, E=76, 81 MeV; measured σ, angular distributions, forward recoil ranges and most probable recoil ranges.
doi: 10.1103/PhysRevC.80.024613
2009SI02 Phys.Lett. B 671, 20 (2009) P.P.Singh, B.P.Singh, M.K.Sharma, U.Gupta, R.Kumar, D.Singh, R.P.Singh, S.Murlithar, M.A.Ansari, R.Prasad, R.K.Bhowmik Probing of incomplete fusion dynamics by spin-distribution measurement NUCLEAR REACTIONS 169Tm(16O, X)177Re/178Re/179Re/180Os/181Os/182Os/180Ir/181Ir/182Ir, E=5.6 MeV/nucleon; measured Eγ, Iγ, (charged-particle)γ-coin, yields, spin distributions; deduced γ cascade feeding intensities. Comparison with PACE4 calculations.
doi: 10.1016/j.physletb.2008.11.035
2009SI34 Phys.Rev. C 80, 064603 (2009) P.P.Singh, A.Yadav, D.P.Singh, U.Gupta, M.K.Sharma, R.Kumar, D.Singh, R.P.Singh, S.Muralithar, M.A.Ansari, B.P.Singh, R.Prasad, R.K.Bhowmik Role of high ℓ values in the onset of incomplete fusion NUCLEAR REACTIONS 169Tm(12C, X)171Lu/173Ta/174Ta/175Ta/176W/176Re/177Re/178Re/180Ir/180Os/, E=5.6, 6.5 MeV/nucleon; measured α spectra, Eγ, Iγ, γ(particle)-coin; deduced yields, spin distributions, and role of angular momentum on yields in incomplete fusion. Comparison with data for 169Tm(16O, X) reaction.
doi: 10.1103/PhysRevC.80.064603
2008GU13 Nucl.Phys. A811, 77 (2008) U.Gupta, P.P.Singh, D.P.Singh, M.K.Sharma, A.Yadav, R.Kumar, B.P.Singh, R.Prasad Observation of large incomplete fusion in 16O + 103Rh system at ≈ 3-5 MeV/nucleon NUCLEAR REACTIONS 103Rh(16O, X)114Te/115Te/116Te/117Te/115Sb/116Sb/117Sb/110Sn/108In/109In/110In/111In/103Ag/104Ag/106Ag, E≈46-85 MeV; measured Eγ, Iγ, σ. Discussed fraction of (in)complete fusion. Comparison with PACE4 calculations. HPGe detector, stacked targets, energy degradation technique.
doi: 10.1016/j.nuclphysa.2008.07.013
1979MI11 J.Phys.(London) G5, 855 (1979) The (n, 2n) Cross Sections of 85Rb, 107Ag and 181Ta at 14.6 MeV NUCLEAR REACTIONS 85Rb, 107Ag, 181Ta(n, 2n), E=14.6 MeV; measured σ. Natural target, NaI(Tl) detector, activation technique.
doi: 10.1088/0305-4616/5/6/011
1971MA14 Can.J.Phys. 49, 1053 (1971) P.N.Maheshwari, U.C.Gupta, C.St-Pierre Study of the 48Ti(α, p)51V and 50Ti(3He, d)51V Reactions NUCLEAR REACTIONS 48Ti(α, p), E=8-11 MeV; 50Ti(3He, d), E=10 MeV; measured σ(Ep, θ), σ(Ed, θ). 51V deduced levels, J, π, L, S.
doi: 10.1139/p71-129
1967SI01 Nucl.Phys. A91, 557 (1967) Lifetimes of the 1.10 and 1.29 MeV Excited States in 59Co RADIOACTIVITY 59Fe [from 58Fe(n, γ)]; measured βγ (t). 59Co levels deduced T1/2. Enriched target.
doi: 10.1016/0375-9474(67)90575-1
1965DH01 Current Sci.(India) 34, 504 (1965) K.C.Dhingra, U.C.Gupta, N.P.S.Sidhu Decay of 51Cr NUCLEAR STRUCTURE 51Cr; measured not abstracted; deduced nuclear properties.
1965GU06 Nucl.Phys. 73, 413 (1965) U.C.Gupta, P.K.Srivastava, G.D.Khera Decay of 86Rb RADIOACTIVITY 86Rb[from 85Rb(n, γ)]; measured Iγ, βγ-coin. Natural target.
doi: 10.1016/0029-5582(65)90686-3
1964MI07 Nucl.Phys. 51, 174 (1964) S.C.Misra, U.C.Gupta, N.P.S.Sidhu Decay of 47Sc NUCLEAR STRUCTURE 47Sc; measured not abstracted; deduced nuclear properties.
doi: 10.1016/0029-5582(64)90261-5
1962GU09 J.Sci.Ind.Res.(India) 21B, 1 (1962) U.C.Gupta, M.G.Shahani, P.K.Srivastava Internal Conversion Coefficients of Au198, Hg203, Cs137 and Cr51 Using a CsI(Tl) Scintillation Spectrometer NUCLEAR STRUCTURE 203Hg, 198Au, 137Cs, 51Cr; measured not abstracted; deduced nuclear properties.
1956MI17 Phys.Rev. 101, 740 (1956) D.W.Miller, B.M.Carmichael, U.C.Gupta, V.K.Rasmussen, M.B.Sampson Scattering of 22-MeV Alpha Particles by N14
doi: 10.1103/PhysRev.101.740
1955RA41 Phys.Rev. 100, 851 (1955) V.K.Rasmussen, D.W.Miller, M.B.Sampson, U.C.Gupta Reactions Be9(α, α'), Be9(α, d), and Be9(d, d')
doi: 10.1103/PhysRev.100.851
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