NSR Query Results
Output year order : Descending NSR database version of April 25, 2024. Search: Author = Y.K.Gupta Found 42 matches. 2023GU15 Phys.Lett. B 845, 138120 (2023) Y.K.Gupta, V.B.Katariya, G.K.Prajapati, K.Hagino, D.Patel, V.Ranga, U.Garg, L.S.Danu, A.Pal, B.N.Joshi, S.Dubey, V.V.Desai, S.Panwar, N.Kumar, S.Mukhopadhyay, P.Singh, N.Sirswal, R.Sariyal, I.Mazumdar, B.V.John Precise determination of quadrupole and hexadecapole deformation parameters of the sd-shell nucleus, 28Si NUCLEAR REACTIONS 90Zr(28Si, 28Si), E=70-102 MeV; measured reaction products. 28Si; deduced σ, quadrupole and hexadecapole deformation parameters using a Bayesian analysis within the framework of coupled channels (CC) calculations. BARC-TIFR 14 MV Pelletron accelerator facility.
doi: 10.1016/j.physletb.2023.138120
2023MO26 Eur.Phys.J. A 59, 234 (2023) G.Mohanto, A.Parihari, Y.K.Gupta, A.Pal, A.Gandhi, S.De, K.Ramachandran, E.T.Mirgule, B.Srinivasan, K.Kalita, A.Kumar, N.K.Deb, K.Rani, A.Tejaswi, C.Vadagama, V.Bharud, L.S.Danu, B.J.Roy, M.Kushwaha, B.K.Nayak, A.Saxena Sensitivity of β4 values extracted from quasi elastic barrier distribution to the 2n transfer channel NUCLEAR REACTIONS 176Yb(16O, X), E=54-84 MeV; measured reaction products; deduced σ(E), the Fusion Barrier Distributions (FBD), impact of deformation parameters on experimental barrier distribution. The BARC-TIFR Pelletron LINAC facility, Mumbai.
doi: 10.1140/epja/s10050-023-01143-z
2022GU19 Phys.Lett. B 834, 137452 (2022) Y.K.Gupta, G.K.Prajapati, B.V.John, B.N.Joshi, L.S.Danu, S.Dubey, S.Mukhopadhyay, N.Kumar, K.Mahata, K.Ramachandran, A.Jhingan, M.Kumar, N.Deshmukh, A.S.Pradeep, B.K.Nayak, D.C.Biswas New signature of non-equilibrium fission from pre-scission α-particle emission NUCLEAR REACTIONS 232Th(16O, F)4H, E=96 MeV; measured reaction products, Eα, Iα, Ep, Ip, Eγ, Iγ; deduced pre-scission α-particle multiplicity spectra, fission time. Comparison with statistical model calculations. BARC-TIFR 14-MV Pelletron accelerator facility at Mumbai.
doi: 10.1016/j.physletb.2022.137452
2021JO07 Nucl.Phys. A1016, 122320 (2021) B.N.Joshi, Arun K.Jain, D.C.Biswas, B.V.John, Y.K.Gupta, L.S.Danu, R.P.Vind, G.K.Prajapati, S.Mukhopadhyay, N.Kumar Direct 16O-cluster knockout from 24Mg(g.s.) NUCLEAR REACTIONS 24Mg(16O, 216O)8Be, E=127, 119 MeV; measured reaction products; deduced σ(θ, E). Comparison with FR-DWIA calculations. BARC-TIFR Pelletron LINAC facility.
doi: 10.1016/j.nuclphysa.2021.122320
2021PA30 Phys.Rev. C 104, 024604 (2021) D.Paul, A.Sen, T.K.Ghosh, Md.M.Shaikh, K.Atreya, R.Santra, S.Kundu, T.K.Rana, K.Banerjee, C.Bhattacharya, S.Bhattacharya, J.K.Meena, D.C.Biswas, B.N.Joshi, N.Kumar, G.K.Prajapati, Y.K.Gupta, K.Mahata, K.Ramachandran, S.Pal Fission fragment mass and folding angle distributions in the reaction 9Be +238U NUCLEAR REACTIONS 238U(9Be, F), E=37.5, 39, 42, 47 MeV pulsed beam from BARC-TIFR Pelletron facility in Mumbai; measured fission fragments, σ(E) using two position-sensitive multiwire proportional counters (MWPC) and time-of-flight (TOF) method; deduced folding angle distributions, yields, fission fragment mass distributions, σ(E)(exp)/σ(E)(theory), incomplete fusion fission (ICF) σ(E), half-mass distribution in the fission of the compound nucleus 247Cm at 47 MeV. Comparison with experimental results from 6,7Li-induced reactions on actinide targets, and 238U(p, F), (α, F) and 232Th(12C, F) reactions. Comparison with semiempirical theoretical calculation using GEF code, and with macro-microscopic two-center shell model calculations, considering the admixture of incomplete fusion fission mechanism.
doi: 10.1103/PhysRevC.104.024604
2020GU11 Phys.Lett. B 806, 135473 (2020) Y.K.Gupta, B.K.Nayak, U.Garg, K.Hagino, K.B.Howard, N.Sensharma, M.Senyigit, W.P.Tan, P.D.O'Malley, M.Smith, R.Gandhi, T.Anderson, R.J.deBoer, B.Frentz, A.Gyurjinyan, O.Hall, M.R.Hall, J.Hu, E.Lamere, Q.Liu, A.Long, W.Lu, S.Lyons, K.Ostdiek, C.Seymour, M.Skulski, B.Vande Kolk Determination of hexadecapole (β4) deformation of the light-mass nucleus 24Mg using quasi-elastic scattering measurements NUCLEAR REACTIONS 90Zr(16O, 16O), (24Mg, 24Mg), E=61 MeV; measured reaction products. 24Mg; deduced deformation parameters, σ, B(Eλ). CCFULL calculations.
doi: 10.1016/j.physletb.2020.135473
2020HO11 Phys.Lett. B 807, 135608 (2020) K.B.Howard, U.Garg, M.Itoh, H.Akimune, M.Fujiwara, T.Furuno, Y.K.Gupta, M.N.Harakeh, K.Inaba, Y.Ishibashi, K.Karasudani, T.Kawabata, A.Kohda, Y.Matsuda, M.Murata, S.Nakamura, J.Okamoto, S.Ota, J.Piekarewicz, A.Sakaue, M.Senyigit, M.Tsumura, Y.Yang Compressional-mode resonances in the molybdenum isotopes: Emergence of softness in open-shell nuclei near A = 90 NUCLEAR REACTIONS 94,96,98,100Mo(α, α'), E=386 MeV; measured reaction products, Eα, Iα; deduced σ(θ, E), isoscalar giant monopole resonance (ISGMR) strength distributions within the MDA framework, softness in the molybdenum isotopes. Comparison with relativistic, self-consistent Random-Phase Approximation calculations.
doi: 10.1016/j.physletb.2020.135608
2020MU08 Nucl.Phys. A1000, 121785 (2020) S.Mukhopadhyay, D.C.Biswas, L.S.Danu, R.Chakrabarti, U.Garg, S.K.Tandel, Y.K.Gupta, B.N.Joshi, G.K.Prajapati, B.V.John, S.Saha, J.Sethi, R.Palit Lifetime measurement and shell model description of negative parity states up to band-termination in 49V
doi: 10.1016/j.nuclphysa.2020.121785
2020PA45 Phys.Rev. C 102, 054604 (2020) D.Paul, A.Sen, T.K.Ghosh, Md.M.Shaikh, K.Atreya, S.Kundu, K.Banerjee, C.Bhattacharya, S.Bhattacharya, J.K.Meena, D.C.Biswas, B.N.Joshi, N.Kumar, G.K.Prajapati, Y.K.Gupta, K.Mahata, K.Ramachandran, S.Pal Measurement of fragment-mass distributions from fission of 214At following the 9Be + 205Tl reaction NUCLEAR REACTIONS 205Tl(9Be, X)214At*, E=42, 43.5, 45, 47 MeV; measured reaction products, yields, time-of-flight difference of the fission fragments, Angular correlations using two position-sensitive multiwire proportional counters (MWPC) at the BARC-TIFR Pelletron facility; deduced fission-fragments mass distributions, half-mass yield distribution, slight asymmetric mass distribution. Comparison with theoretical predictions from a recent macroscopic-microscopic calculation.
doi: 10.1103/PhysRevC.102.054604
2020PR13 Phys.Rev. C 102, 054605 (2020) G.K.Prajapati, Y.K.Gupta, B.V.John, B.N.Joshi, H.Kaur, N.Kumar, L.S.Danu, S.Mukhopadhyay, S.Dubey, S.R.Jain, D.C.Biswas, B.K.Nayak Temperature and isospin dependence of the level-density parameter in the A ≈ 110 mass region NUCLEAR REACTIONS 94Mo(16O, X)110Sn*, E=55, 60, 70, 75, 80 MeV; 100Mo(16O, X)116Sn*, E=55, 60, 70, 75, 80, 95.5, 104.9, 114.6, 124.6, 136.6 MeV; measured reaction products, Eα, Iα, angular distributions using CsI(Tl) detectors in a Charge Particle Detector Array at the BARC-TIFR Pelletron Linac Accelerator facility; deduced double-differential σ(Eα), averaged α-particle energy spectra, inverse level-density parameter for Cd nuclei as a function of temperature and isospin. Statistical model analysis of experimental data using PACE2 code.
doi: 10.1103/PhysRevC.102.054605
2019HO17 Eur.Phys.J. A 55, 228 (2019) K.B.Howard, U.Garg, Y.K.Gupta, M.N.Harakeh Where we stand on structure dependence of ISGMR in the Zr-Mo region: Implications on K∞
doi: 10.1140/epja/i2019-12762-x
2019KU10 Phys.Rev. C 99, 041602 (2019) N.Kumar, D.C.Biswas, T.K.Ghosh, J.Sadhukhan, B.N.Joshi, Y.K.Gupta, R.P.Vind, G.K.Prajapati, S.Dubey, L.S.Danu, S.Mukhopadhyay, K.Mahata, B.V.John, S.Sodaye Role of quasifission in fission fragment mass distributions for the 28Si + 197Au reaction NUCLEAR REACTIONS 197Au(28Si, X), E=135.4-180.0 MeV; measured yields mass distribution and time correlation of fission fragments, distribution of ratio of parallel components as a function of mass ratio, variance of fission fragment mass distribution as a function of beam energy using two position-sensitive multiwire proportional counters (MWPCs) at Pelletron-LINAC facility of TIFR, Mumbai. Comparison with dynamical and statistical model calculations. 225Np; calculated potential energy surface (PES). Discussed role of quasifission process in fission fragment mass distribution.
doi: 10.1103/PhysRevC.99.041602
2019SE06 Phys.Lett. B 792, 170 (2019), Erratum Phys.Lett. B 820, 136556 (2021) N.Sensharma, U.Garg, S.Zhu, A.D.Ayangeakaa, S.Frauendorf, W.Li, G.H.Bhat, J.A.Sheikh, M.P.Carpenter, Q.B.Chen, J.L.Cozzi, S.S.Ghugre, Y.K.Gupta, D.J.Hartley, K.B.Howard, R.V.F.Janssens, F.G.Kondev, T.C.McMaken, R.Palit, J.Sethi, D.Seweryniak, R.P.Singh Two-phonon wobbling in 135Pr NUCLEAR STRUCTURE 135Pr; analyzed available data; deduced wobbling. Comparison with theoretical calculations in the framework of the quasiparticle triaxial rotor and triaxial projected shell models.
doi: 10.1016/j.physletb.2019.03.038
2018GU05 Phys.Rev. C 97, 064323 (2018) Y.K.Gupta, K.B.Howard, U.Garg, J.T.Matta, M.Senyigit, M.Itoh, S.Ando, T.Aoki, A.Uchiyama, S.Adachi, M.Fujiwara, C.Iwamoto, A.Tamii, H.Akimune, C.Kadono, Y.Matsuda, T.Nakahara, T.Furuno, T.Kawabata, M.Tsumura, M.N.Harakeh, N.Kalantar-Nayestanaki Isoscalar giant monopole, dipole, and quadrupole resonances in 90, 92Zr and 92Mo NUCLEAR REACTIONS 90,92Zr, 92Mo(α, α'), (α, α), E=385 MeV; measured Eα, α(θ), double differential σ(E, θ) using Grand Raiden spectrometer of RCNP; deduced energies, widths, EWSR and moment ratios for isoscalar giant monopole (ISGMR), dipole (ISGDR), and quadrupole (ISGQR) strength distributions, Lorentzian parameters of distributions, collective structures not influenced by nuclear shell structure near A=90. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.97.064323
2018GU16 Phys.Rev. C 98, 041601 (2018) Y.K.Gupta, D.C.Biswas, G.K.Prajapati, L.S.Danu, B.N.Joshi, S.Mukhopadhyay, B.V.John, S.Dubey, Si.Chettri, N.Kumar, R.P.Vind, S.Mukherjee Affirmation of transfer-breakup as a source for α particle emission in 12, 13C + 232Th fission reactions NUCLEAR REACTIONS 232Th(12C, F), (13C, F), E=74.5 MeV; measured reaction products and fission fragments, Eα, Iα, α(θ), (fragment)α-coin, α-particle multiplicity spectra by moving source disentangling analysis (MSDA) using position sensitive ionization chambers and hybrid detector telescope for fission fragment and α detection at BARC-TIFR 14-MV Pelletron accelerator facility; deduced compound nucleus excitation energy, Qα and S(n), α-particle multiplicity contributions, complementary fission fragment, near-scission emission, excess α-particle emission from α-transfer induced fission by α-particle transfer following breakup of 8Be into two α particles.
doi: 10.1103/PhysRevC.98.041601
2017BH01 Eur.Phys.J. A 52, 312 (2017) P.Bhar, S.K.Maurya, Y.K.Gupta, T.Manna Modelling of anisotropic compact stars of embedding class one
doi: 10.1140/epja/i2016-16312-x
2017GU18 Phys.Rev. C 96, 014608 (2017) Y.K.Gupta, D.C.Biswas, O.Serot, D.Bernard, O.Litaize, S.Julien-Laferriere, A.Chebboubi, G.Kessedjian, C.Sage, A.Blanc, H.Faust, U.Koster, A.Ebran, L.Mathieu, A.Letourneau, T.Materna, S.Panebianco Fission fragment yield distribution in the heavy-mass region from the 239Pu (nth, f) reaction NUCLEAR REACTIONS 239Pu(n, F), E=thermal; measured fission fragments in A=126 to 150 range using the Lohengrin recoil-mass spectrometer at ILL-Grenoble high-flux reactor facility; deduced distributions of kinetic energies and ionic charge, relative mass yields in three independent experiments. Comparison with JEFF-3.1.1 fission yield evaluation, and with predictions of Monte Carlo nuclear fission models using GEF and FIFRELIN codes.
doi: 10.1103/PhysRevC.96.014608
2017JO03 Pramana 88, 29 (2017) B.N.Joshi, A.K.Jain, D.C.Biswas, B.V.John, Y.K.Gupta, L.S.Danu, R.P.Vind, R.P.Vind, G.K.Prajapati, S.Mukhopadhyay, A.Saxena Search for 12C+12C clustering in 24Mg ground state NUCLEAR REACTIONS 24Mg(12C, 212C)12C, E=104 MeV; measured reaction products; deduced σ(θ, E). Comparison with theoretical calculations.
doi: 10.1007/s12043-016-1331-6
2017PA46 Chin.Phys.C 41, 104001 (2017) D.Patel, S.Mukherjee, N.Deshmukh, J.Lubian, J.-S.Wang, T.Correa, B.K.Nayak, Y.-Y.Yang, W.i-H.Ma, D.C.Biswas, Y.K.Gupta, S.Santra, E.T.Mirgule, L.S.Danu, N.L.Singh, A.Saxena Influence of breakup on elastic and α-production channels in the 6Li+ 116Sn reaction NUCLEAR REACTIONS 116Sn(6Li, X)4H, E=22-40 MeV; measured reaction products, Eα, Iα; deduced σ(θ). Comparison with the predictions of continuum-discretized coupled channels (CDCC) calculations.
doi: 10.1088/1674-1137/41/10/104001
2016BH08 Eur.Phys.J. A 52, 312 (2016) P.Bhar, S.K.Maurya, Y.K.Gupta, T.Manna Modelling of anisotropic compact stars of embedding class one
doi: 10.1140/epja/i2016-16312-x
2016BR01 Phys.Rev. C 93, 025503 (2016) M.Brodeur, C.Nicoloff, T.Ahn, J.Allen, D.W.Bardayan, F.D.Becchetti, Y.K.Gupta, M.R.Hall, O.Hall, J.Hu, J.M.Kelly, J.J.Kolata, J.Long, P.O'Malley, B.E.Schultz Precision half-life measurement of 17F RADIOACTIVITY 17F(β+)[from 2H(16O, X), E not given]; measured β radiation, half-life of 17F decay at the University of Notre Dame β-decay counting station; deduced mixing ratio ρ for the mixed transition between mirror nuclei and the correlation parameters based on Standard Model validity. Discussed uncertainty estimates. Comparison with previous experimental measurements. NUCLEAR REACTIONS 2H(16O, X)12C/13C/14N/15O/16O/17O/17F, E not given; measured yields of reaction products at Notre Dame TwinSol facility.
doi: 10.1103/PhysRevC.93.025503
2016DU25 Phys.Rev. C 94, 064610 (2016) S.Dubey, D.C.Biswas, S.Mukherjee, D.Patel, Y.K.Gupta, G.K.Prajapati, B.N.Joshi, L.S.Danu, S.Mukhopadhyay, B.V.John, S.V.Suryanarayana, R.P.Vind Quasi-elastic scattering and transfer angular distribution for 10, 11B + 232Th systems at near-barrier energies NUCLEAR REACTIONS 232Th(11B, 11B'), (11B, X), E=52, 53, 54, 55, 56, 57, 59, 61, 65 MeV; 232Th(10B, 10B'), (10B, X), E=49, 51, 52, 53, 54, 55, 56, 57, 59, 61, 65 MeV; measured outgoing particles, quasielastic σ(θ, E), transfer σ(E) for 12,13C, 9,10Be, 6,7Li, and reaction σ(E) at 14UD BARC-TIFR Pelletron facility; deduced optical model parameters, energy dependence of the real and imaginary potentials, reduced reaction cross sections. Optical model analysis using code ECIS with phenomenological Woods-Saxon potentials.
doi: 10.1103/PhysRevC.94.064610
2016GU05 Phys.Rev. C 93, 044324 (2016) Y.K.Gupta, U.Garg, J.Hoffman, J.Matta, P.V.Madhusudhana Rao, D.Patel, T.Peach, K.Yoshida, M.Itoh, M.Fujiwara, K.Hara, H.Hashimoto, K.Nakanishi, M.Yosoi, H.Sakaguchi, S.Terashima, S.Kishi, T.Murakami, M.Uchida, Y.Yasuda, H.Akimune, T.Kawabata, M.N.Harakeh Deformation effects on isoscalar giant resonances in 24Mg NUCLEAR REACTIONS 24Mg(α, α), (α, α'), E=386 MeV; measured Eα, Iα, σ(θ) using Grand Raiden magnetic spectrometer, position-sensitive multiwire drift chambers (MWDCs) and plastic scintillators at RCNP-Osaka facility. DWBA analysis. 24Mg; deduced levels, isoscalar giant resonances, l-transfers, widths, strength distributions for isoscalar giant monopole resonance (ISGMR), isoscalar giant dipole resonance (ISGDR) and isoscalar giant quadrupole resonance (ISGQR), K-splitting of ISGMR and ISGQR, energy-weighted sum rules (EWSR). Comparison with calculations based on self-consistent solution of deformed HFB and QRPA equations using Skyrme SkM* functionals for a prolate-deformed ground state in 24Mg and compared with those expected for a spherical ground state.
doi: 10.1103/PhysRevC.93.044324
2016GU13 Phys.Lett. B 760, 482 (2016) Y.K.Gupta, U.Garg, K.B.Howard, J.T.Matta, M.Senyigit, M.Itoh, S.Ando, T.Aoki, A.Uchiyama, S.Adachi, M.Fujiwara, C.Iwamoto, A.Tamii, H.Akimune, C.Kadono, Y.Matsuda, T.Nakahara, T.Furuno, T.Kawabata, M.Tsumura, M.N.Harakeh, N.Kalantar-Nayestanaki Are there nuclear structure effects on the isoscalar giant monopole resonance and nuclear incompressibility near A ∼ 90? NUCLEAR REACTIONS 90,92Zr, 92Mo(α, α'), E=385 MeV; measured reaction products, Eα, Iα; deduced σ(θ, E), isoscalar giant monopole resonance strength distributions.
doi: 10.1016/j.physletb.2016.07.021
2016MA47 Eur.Phys.J. A 52, 191 (2016) S.K.Maurya, Y.K.Gupta, T.T.Smitha, F.Rahaman A new exact anisotropic solution of embedding class one
doi: 10.1140/epja/i2016-16191-1
2016PE11 Phys.Rev. C 93, 064325 (2016) T.Peach, U.Garg, Y.K.Gupta, J.Hoffman, J.T.Matta, D.Patel, P.V.Madhusudhana Rao, K.Yoshida, M.Itoh, M.Fujiwara, K.Hara, H.Hashimoto, K.Nakanishi, M.Yosoi, H.Sakaguchi, S.Terashima, S.Kishi, T.Murakami, M.Uchida, Y.Yasuda, H.Akimune, T.Kawabata, M.N.Harakeh, G.Colo Effect of ground-state deformation on isoscalar giant resonances in 28Si NUCLEAR REACTIONS 28Si(α, α), (α, α'), E=386 MeV; measured Eα, Iα, σ(θ) for g.s., first 2+ state and giant resonances using Grand Raiden magnetic spectrometer at RCNP-Osaka cyclotron facility. 28Si; deduced isoscalar giant (ISGMR, ISGQR, ISGDR, ISGOR) resonances, L-transfers, widths, strength distributions, evidence of the effect of ground-state deformation of 28Si on strength distributions. Multipole-decomposition (MDA fits), and optical model analyses. Comparison with axially deformed Hartree-Fock-Bogoliubov (HFB) and the QRPA using the Skyrme energy-density functional (EDF).
doi: 10.1103/PhysRevC.93.064325
2015GU17 Phys.Lett. B 748, 343 (2015) Y.K.Gupta, U.Garg, J.T.Matta, D.Patel, T.Peach, J.Hoffman, K.Yoshida, M.Itoh, M.Fujiwara, K.Hara, H.Hashimoto, K.Nakanishi, M.Yosoi, H.Sakaguchi, S.Terashima, S.Kishi, T.Murakami, M.Uchida, Y.Yasuda, H.Akimune, T.Kawabata, M.N.Harakeh Splitting of ISGMR strength in the light-mass nucleus 24Mg due to ground-state deformation NUCLEAR REACTIONS 24Mg(α, α'), E=386 MeV; measured reaction products, Eα, Iα; deduced energy levels, J, π, B(Eλ), the isoscalar giant monopole resonance (ISGMR) strength distribution splitting, σ(θ). Comparison with available data.
doi: 10.1016/j.physletb.2015.07.021
2015PA26 Phys.Rev. C 91, 054614 (2015) D.Patel, S.Mukherjee, D.C.Biswas, B.K.Nayak, Y.K.Gupta, L.S.Danu, S.Santra, E.T.Mirgule Investigation of the threshold anomaly for the 7Li + 159Tb system NUCLEAR REACTIONS 159Tb(7Li, 7Li), E=24, 26, 28, 30, 35, 40, 44 MeV; measured elastically scattered 7Li spectra, σ(θ, E)(elastic)/σ(Rutherford) at BARC-TIFR Pelletron facility. Optical-model analysis using the Woods-Saxon potential. Comparison with Continuum-discretized coupled-channels calculations using FRESCO computer code with and without breakup couplings. Reduced reaction cross sections compared with previous experimental results of cross sections involving 7Li and 16O projectiles and different targets.
doi: 10.1103/PhysRevC.91.054614
2015XU11 Phys.Rev. C 92, 015807 (2015) J.Xu, E.Shields, F.Calaprice, S.Westerdale, F.Froborg, B.Suerfu, T.Alexander, A.Aprahamian, H.O.Back, C.Casarella, X.Fang, Yo.K.Gupta, A.Ianni, E.Lamere, W.H.Lippincott, Q.Liu, S.Lyons, K.Siegl, M.Smith, W.Tan, B.Vande Kolk Scintillation efficiency measurement of Na recoils in NaI(Tl) below the DAMA/LIBRA energy threshold NUCLEAR REACTIONS Na, I(n, n'), E=690 keV pulsed beam; measured Na-recoil spectra, double-TOF spectrum for coincidence events of Na recoils, E(n), I(n), 127I excitation events at Notre Dame accelerator facility; deduced Na-recoil quenching factors, spectral fits of the DAMA/LIBRA modulation amplitudes to standard WIMP model. Comparison with other experimental results for Na-recoil quenching factors. Relevance to DAMA/LIBRA dark matter claims.
doi: 10.1103/PhysRevC.92.015807
2014DU02 Phys.Rev. C 89, 014610 (2014) S.Dubey, S.Mukherjee, D.C.Biswas, B.K.Nayak, D.Patel, G.K.Prajapati, Y.K.Gupta, B.N.Joshi, L.S.Danu, S.Mukhopadhyay, B.V.John, V.V.Desai, S.V.Suryanarayana, R.P.Vind, N.N.Deshmukh, S.Appnnababu, P.M.Prajapati Effect of breakup processes on the near-barrier elastic scattering of the 6, 7Li + 232Th systems NUCLEAR REACTIONS 232Th(6Li, 6Li), (7Li, 7Li), E=24, 26, 30, 32, 35, 40, 44 MeV; measured scattered 6,7Li particle spectra, σ(E, θ), total fusion and reaction σ(E) using ΔE-E telescopes at BARC-TIFR pelletron accelerator facility; analyzed data by optical potential model ECIS code with Woods-Saxon and Sao Paulo potentials. Indication of breakup threshold anomaly for 6Li scattering. Discussed role of projectile breakup on reaction mechanism.
doi: 10.1103/PhysRevC.89.014610
2014PA27 Phys.Rev. C 89, 064614 (2014) D.Patel, S.Mukherjee, B.K.Nayak, S.V.Suryanarayana, D.C.Biswas, E.T.Mirgule, Y.K.Gupta, L.S.Danu, B.V.John, A.Saxena Fusion barrier distributions in 6, 7Li + 209Bi reactions from quasi-elastic and fusion excitation function measurements NUCLEAR REACTIONS 209Bi(6Li, X), (7Li, X), E=22.0-39.0 MeV; measured particle spectra, quasi-elastic σ(E), α cross sections versus incident energy at 14UD BARC-TIFR Pelletron facility; deduced fusion barrier distributions, transmission or capture probability as a function of incident energy; calculated total reaction σ(E), integrated breakup σ(E), breakup σ(E), and fusion distributions by continuum-discretized coupled-channel (CDCC) theory using FRESCO code.
doi: 10.1103/PhysRevC.89.064614
2013DE09 Phys.Rev. C 87, 034604 (2013) V.V.Desai, B.K.Nayak, A.Saxena, D.C.Biswas, E.T.Mirgule, B.John, S.Santra, Y.K.Gupta, L.S.Danu, G.K.Prajapati, B.N.Joshi, S.Mukhopadhyay, S.Kailas, P.K.Pujari, A.Kumar, D.Patel, S.Mukherjee, P.M.Prajapati Determination of 241Pu(n, f) cross sections by the surrogate-ratio method NUCLEAR REACTIONS 238U(6Li, d), E=39.6 MeV; 232Th(6Li, d), E=39.0 MeV; measured proton, deuteron, triton, α, projectile-like fragment (PLF), and fission fragment spectra, energy loss at BARC-TIFR facility; deduced σ. 241Pu(n, F), E=16-20 MeV; deduced σ(E) using surrogate ratio method (SRM). Comparison with previous studies, and calculations using EMPIRE 3.1 code for fission barrier libraries RIPL-1 and RIPL-3, and the barrier formula (BF). Best-fit σ(E) deduced for E(n)=2-20 MeV.
doi: 10.1103/PhysRevC.87.034604
2012BI15 J.Phys.:Conf.Ser. 381, 012091 (2012) D.C.Biswas, P.Roy, Y.K.Gupta, B.N.Joshi, B.K.Nayak, L.S .Danu, B.V.John, R.P.Vind, N.Deshmukh, S.Mukherjee, A.K.Jain, R.K.Choudhury Projectile structure effects in multi-nucleon and cluster transfers in 16, 18O+164Dy, 208Pb reactions NUCLEAR REACTIONS 164Dy, 208Pb(16O, X), (18O, X), E=90, 96 MeV; measured reaction fragments using ΔE-E Si telescopes inside scattering chamber; deduced projectile-like fragments σ(θ).
doi: 10.1088/1742-6596/381/1/012091
2012GU15 Phys.Rev. C 86, 014615 (2012) Y.K.Gupta, D.C.Biswas, B.John, B.K.Nayak, A.Chatterjee, R.K.Choudhury Enhanced α-particle emission in 12C+232Th fission due to the transfer-breakup process NUCLEAR REACTIONS 232Th(12C, X), E=69 MeV; measured Eα, α( fission fragment)-coin, α(θ), α-particle multiplicity spectra, 2α-particle spectra from 8Be breakup; deduced prefission and postfission components of a-particle emission from fits of spectra with moving-source model.
doi: 10.1103/PhysRevC.86.014615
2011AP02 Phys.Rev. C 83, 067601 (2011); Pub Note Phys.Rev. C 83, 069902 (2011) S.Appannababu, R.G.Thomas, L.S.Danu, P.K.Rath, Y.K.Gupta, B.V.John, B.K.Nayak, D.C.Biswas, A.Saxena, S.Mukherjee, R.K.Choudhury Fission fragment angular distributions in the 9Be + 232Th reaction NUCLEAR REACTIONS 232Th(9Be, X), E=39, 41, 44, 50 MeV; measured fission fragment spectra, σ(E, θ). Comparison with standard statistical saddle-point model (SSPM), and the preequilibrium fission (PEQ) model. Comparison of fission anisotropies for projectiles of 7Li, 9Be, 11B, 12C, 16O and 19F on 232Th target.
doi: 10.1103/PhysRevC.83.067601
2011DE05 Phys.Rev. C 83, 024607 (2011) N.N.Deshmukh, S.Mukherjee, D.Patel, N.L.Singh, P.K.Rath, B.K.Nayak, D.C.Biswas, S.Santra, E.T.Mirgule, L.S.Danu, Y.K.Gupta, A.Saxena, R.K.Choudhury, R.Kumar, J.Lubian, C.C.Lopes, E.N.Cardozo, P.R.S.Gomes Breakup threshold anomaly in the near-barrier elastic scattering of 6Li + 116, 112Sn NUCLEAR REACTIONS 112Sn(6Li, 6Li), (6Li, X), E=21, 23, 25, 35 MeV; 116Sn(6Li, 6Li), (6Li, X), E=20, 21, 22, 23, 26, 30, 35 MeV; measured 6Li spectra by E-ΔE method; deduced elastic scattering σ and total reaction σ. Optical model analysis with phenomenological Woods-Saxon potential. Comparison of reduced cross sections with reaction cross sections for several other systems. Presence of the breakup threshold anomaly.
doi: 10.1103/PhysRevC.83.024607
2011GU19 Phys.Rev. C 84, 031603 (2011) Y.K.Gupta, D.C.Biswas, R.K.Choudhury, A.Saxena, B.K.Nayak, B.John, K.Ramachandran, R.G.Thomas, L.S.Danu, B.N.Joshi, K.Mahata, S.K.Pandit, A.Chatterjee Systematics of pre- and near-scission α-particle multiplicities in heavy-ion-induced fusion-fission reactions NUCLEAR REACTIONS 232Th(11B, X), E=62 MeV; measured E(α), α(fission fragment)-coin, α-particle multiplicity spectra; deduced prescission and near-scission components. Systematics of α(pre-scission) and α(near-scission) σ for Ag+37Cl, 124Sn+37Cl, 141Pr+28Si, 164,167,170Er+28Si, 175Lu+28Si, 181Ta+19F, 197Au+12C, 197Au+16O, 197Au+19F, 197Au+28Si, 208Pb+19F, 208Pb+28Si, 232Th+16O, 232Th+19F, 232Th+28Si, 232Th+40Ar systems.
doi: 10.1103/PhysRevC.84.031603
2011JO02 Phys.Rev.Lett. 106, 022501 (2011) B.N.Joshi, A.K.Jain, Y.K.Gupta, D.C.Biswas, A.Saxena, B.V.John, L.S.Danu, R.P.Vind, R.K.Choudhury Heavy Cluster Knockout Reaction 16O(12C, 212C)4He and the Nature of the 12C-12C Interaction Potential NUCLEAR REACTIONS 16O(12C, 212C), E=118.8 MeV; measured reaction products, 12C-12C-coin.; deduced σ(θ), σ(θ, E), optical potentials. Comparison with finite range DWIA framework.
doi: 10.1103/PhysRevLett.106.022501
2011RO26 Phys.Rev. C 84, 011602 (2011) P.Roy, A.Saxena, B.K.Nayak, E.T.Mirgule, B.John, Y.K.Gupta, L.S.Danu, R.P.Vind, A.Kumar, R.K.Choudhury Systematic study of projectile-structure effect on the fusion-barrier distribution NUCLEAR REACTIONS 232Th(α, α'), E=16-30 MeV; measured Eα, Iα, quasi-elastic-scattering σ(E); deduced fusion-barrier distribution and width. 232Th(12C, 12C'), E(cm)=52-77 MeV; 232Th(16O, 16O'), E(cm)=70-97 MeV; 232Th(19F, 19F'), E(cm)=77-102 MeV; analyzed fusion-barrier distributions and widths. Comparison with coupled-channel fusion model calculations.
doi: 10.1103/PhysRevC.84.011602
2009GU30 Phys.Rev. C 80, 054611 (2009) Y.K.Gupta, D.C.Biswas, B.John, B.K.Nayak, A.Saxena, R.K.Choudhury Nuclear level-density parameters of nuclei in the Z ≈ 70 and A ≈ 180 mid-shell regions NUCLEAR REACTIONS 164Dy(11B, X), E=65 MeV; 164Dy(12C, X), E=74 MeV; 164Dy(16O, X), E=86 MeV; 181Ta(12C, X), E=77 MeV; measured γ-ray fold-gated α spectra; deduced differential σ and level-density parameters. Comparison with PACE2 statistical model calculations.
doi: 10.1103/PhysRevC.80.054611
2008GU15 Phys.Rev. C 78, 054609 (2008) Y.K.Gupta, B.John, D.C.Biswas, B.K.Nayak, A.Saxena, R.K.Choudhury Angular momentum dependence of the nuclear level-density parameter around Z ∼ 50 NUCLEAR REACTIONS 93Nb(19F, X), E=73.5 MeV; 89Y(24Mg, X), E=100.5 MeV; 89Y(24Mg, X), E=106.0 MeV; 93Nb(24Mg, X), E=103.3 MeV; 115In(11B, X), E=58.0 MeV; 115In(12C, X), E=71.0 MeV; 115In(16O, X), E=80.0 MeV; measured Eγ, Iγ, Eα, Iα, σ(θ). Deduced level-density parameters.
doi: 10.1103/PhysRevC.78.054609
2007NA12 Phys.Rev. C 75, 054615 (2007) B.K.Nayak, R.K.Choudhury, A.Saxena, P.K.Sahu, R.G.Thomas, D.C.Biswas, B.V.John, E.T.Mirgule, Y.K.Gupta, M.Bhike, H.G.Rajprakash Evidence for Coulomb effects on the fusion barrier distribution for deformed projectile nuclei NUCLEAR REACTIONS 115In(16O, X), E=49-69 MeV; 115In(28Si, X), E=92-114 MeV; 115In(30Si, X), E=92-120 MeV; measured cross sections, quasielastic excitation functions. Deduced fusion barrier distributions.
doi: 10.1103/PhysRevC.75.054615
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