NSR Query Results
Output year order : Descending NSR database version of April 25, 2024. Search: Author = K.M.Varier Found 28 matches. 2021VI08 Phys.Rev. C 104, 054602 (2021) A.C.Visakh, E.Prasad, P.V.Laveen, M.Shareef, A.Shamlath, S.Nath, N.Madhavan, J.Gehlot, Gonika, R.Biswas, A.Parihari, J.Khuyagbaatar, B.Lommel, B.Kindler, A.M.Vinodkumar, B.R.S.Babu, S.Sanila, K.M.Varier, S.Appannababu Fusion studies in 16O + 142, 150Nd reactions at energies near the Coulomb barrier NUCLEAR REACTIONS 142Nd(16O, X), E=60-104 MeV; 150Nd(16O, X), E=56-104 MeV from the 15-UD Pelletron accelerator at IUAC-New Delhi; measured reaction products using the Heavy Ion Reaction Analyzer (HIRA), with electromagnetic configuration of Q1Q2-ED1-M-MD-ED2-Q3Q4 and two silicon surface barrier detectors (SSBDs), evaporation residues (ERs) using position sensitive multiwire proportional counter (MWPC), two-dimensional ΔE versus ToF spectra, σ(E) for ERs; deduced fusion σ(E). 148Nd(18O, X), 142,144,148Nd(16O, X), E-VB=-10-35 MeV analyzed previous and present experimental measurements for reduced fusion σ(E). Comparison with coupled channels calculations using CCFULL code, and with 1D-BPM predictions using Akyuz-Winther (AW) potential parameters.
doi: 10.1103/PhysRevC.104.054602
2020JI03 Phys.Rev. C 101, 024611 (2020) P.Jisha, A.M.Vinodkumar, B.R.S.Babu, S.Nath, N.Madhavan, J.Gehlot, A.Jhingan, T.Banerjee, Ish Mukul, R.Dubey, N.Saneesh, K.M.Varier, E.Prasad, A.Shamlath, P.V.Laveen, M.Shareef Evaporation residue measurements of compound nuclei in the A ≈ 200 region NUCLEAR REACTIONS 181Ta(16O, X), (18O, X), E=68-110 MeV; measured reaction products, time-of-flight and E-ΔE, evaporation residue σ(E). Comparison with coupled-channel (CC) calculations using CCFULL code. 181Ta(16O, X), (18O, X), E(cm)=60-120 MeV; 180Hf(19F, X), E(cm)=70-115 MeV; analyzed present and previous experimental σ(E) data using the HIVAP code. 181Ta(12C, X), (13C, X), (16O, X), (18O, X), 174,176Yb, 181Ta, 182,184W(16O, X), E(cm)/VB=0.9-1.5; analyzed experimental data in literature for reduced cross sections of evaporation residues. 204,206,208Pb(12C, X), 180Hf, 181Ta, 197Au, 194,198Pt(19F, X), 181Ta, 188,192Os, 197Au(18O, X), 181Ta, 184,186W, 188,192Os, 197Au(16O, X), E not given; analyzed experimental data in literature for charge products ZpZt and neutron numbers of compound nuclei, fission barriers scaling factors, ratio of mass asymmetry values, and fusion probabilities.
doi: 10.1103/PhysRevC.101.024611
2016SH01 Nucl.Phys. A945, 67 (2016) A.Shamlath, M.Shareef, E.Prasad, P.Sugathan, R.G.Thomas, A.Jhingan, S.Appannababu, A.K.Nasirov, A.M.Vinodkumar, K.M.Varier, C.Yadav, B.R.S.Babu, S.Nath, G.Mohanto, Ish Mukul, D.Singh, S.Kailas Fission fragment mass distribution studies in 30Si + 180Hf reaction NUCLEAR REACTIONS 180Hf(30Si, F), E=128-148 MeV;194Pt(16O, F), E not given; measured fission fragments using two large area position-sensitive MWPCs; deduced fragment mass distribution; calculated fragment mass distribution, potential energy surface using CCFULL code, ratio quasifission σ to capture σ using DNS (Double Nuclear System) model.
doi: 10.1016/j.nuclphysa.2015.09.011
2015LA18 J.Phys.(London) G42, 095105 (2015) P.V.Laveen, E.Prasad, N.Madhavan, S.Pal, J.Sadhukhan, S.Nath, J.Gehlot, A.Jhingan, K.M.Varier, R.G.Thomas Fusion measurements for the 18O + 194Pt reaction and search for neutron shell closure effects NUCLEAR REACTIONS 194Pt(18O, X)212Rn, E=77.7-105.3 MeV; measured reaction products, fission fragments; deduced evaporation residue σ, fission fragments σ(θ). Comparison with statistical model analysis of the evaporation residue data employing shell-corrected free energy fission barrier height.
doi: 10.1088/0954-3899/42/9/095105
2015SA16 Phys.Rev. C 91, 044621 (2015) R.Sandal, B.R.Behera, V.Singh, M.Kaur, A.Kumar, G.Kaur, P.Sharma, N.Madhavan, S.Nath, J.Gehlot, A.Jhingan, K.S.Golda, H.Singh, S.Mandal, S.Verma, E.Prasad, K.M.Varier, A.M.Vinodkumar, A.Saxena, J.Sadhukhan, S.Pal Probing nuclear dissipation via evaporation residue excitation functions for the 16, 18O+198Pt reactions NUCLEAR REACTIONS 198Pt(16O, 16O), (16O, X)214Rn*, E=78.0-105.6 MeV; 198Pt(18O, 18O), (18O, X)216Rn*, E=77.8-105.4; measured evaporation residues (ER), scattered 16,18O spectra, TOF spectrum, angular distributions of ERs, σ(E) for ERs and fusion using HYRA analyzer at IUAC-New Delhi 15 UD Pelletron facility. Comparison with statistical model calculations of compound nuclear decay with Kramers' fission width.
doi: 10.1103/PhysRevC.91.044621
2012PR04 Nucl.Phys. A882, 62 (2012) E.Prasad, K.M.Varier, R.G.Thomas, A.M.Vinodkumar, K.Mahata, S.Appannababu, P.Sugathan, K.S.Golda, B.R.S.Babu, A.Saxena, B.V.John, S.Kailas Fission fragment angular distribution measurements for 16O + 194Pt reaction at energies near the Coulomb barrier NUCLEAR REACTIONS 194Pt(16O, F), E=79-90 MeV; measured fission E(fragment), I(fragment, θ); calculated σ(θ), fission barrier, ER σ, neutron multiplicity using SSPM (saddle point statistical model) PACE code and RFRM (rotating FR model) moments of inertia; deduced fission fragments σ(θ), σ, fission probability, fission barrier, level density parameters.
doi: 10.1016/j.nuclphysa.2012.03.005
2011PR13 Phys.Rev. C 84, 064606 (2011) E.Prasad, K.M.Varier, N.Madhavan, S.Nath, J.Gehlot, S.Kalkal, J.Sadhukhan, G.Mohanto, P.Sugathan, A.Jhingan, B.R.S.Babu, T.Varughese, K.S.Golda, B.P.A.Kumar, B.Satheesh, S.Pal, R.Singh, A.K.Sinha, S.Kailas Evaporation residue excitation function measurement for the 16O + 194Pt reaction NUCLEAR REACTIONS 194Pt(16O, X)210Rn*, E=75.4, 79.5, 83.7, 87.8, 91.9, 96.0, 101.1, 103.1 MeV; measured particle spectra of evaporation residues, time of flight, energy loss, σ(θ) of evaporation residues, evaporation residue cross sections. Hybrid Recoil Mass Analyzer (HYRA). Data analyzed with statistical model calculations using KramersĀ formula. PACE3 results. 197Au(16O, X)213Fr*, E(cm)=70-130 MeV; 197Au(18O, X)215Fr*, E(cm)=60-120 MeV; analyzed σ(E) data with statistical model calculations assuming Bohr-Wheeler and Kramers fission widths.
doi: 10.1103/PhysRevC.84.064606
2010PR05 Phys.Rev. C 81, 054608 (2010) E.Prasad, K.M.Varier, R.G.Thomas, P.Sugathan, A.Jhingan, N.Madhavan, B.R.S.Babu, R.Sandal, S.Kalkal, S.Appannababu, J.Gehlot, K.S.Golda, S.Nath, A.M.Vinodkumar, B.P.A.Kumar, B.V.John, G.Mohanto, M.M.Musthafa, R.Singh, A.K.Sinha, S.Kailas Conclusive evidence of quasifission in reactions forming the 210Rn compound nucleus NUCLEAR REACTIONS 186W(24Mg, X)210Rn, E=111-125 MeV; 194Pt(16O, X)210Rn, E=75-102 MeV; measured fission fragment mass ratio distributions and mass ratio widths. Comparison with coupled-channel calculations.
doi: 10.1103/PhysRevC.81.054608
2010PR08 Nucl.Phys. A834, 208c (2010) E.Prasad, K.M.Varier, B.R.S.Babu, N.Madhavan, K.S.Golda, S.Nath, B.P.A.Kumar, J.J.Das, J.Gehlot, P.Sugathan, A.Jhingan, A.K.Sinha, B.R.Behera, R.Sandal, H.Singh, R.Singh, R.G.Thomas, S.Kailas Study of fission fragment mass distribution for 16O + 194Pt reaction NUCLEAR REACTIONS 194Pt(16O, F), E=75-102 MeV; measured fission fragment mass and angular distributions using TOF method. Comparison with calculations.
doi: 10.1016/j.nuclphysa.2009.12.042
2009SA03 Nucl.Phys. A817, 35 (2009) K.P.Santhosh, V.B.Jose, A.Joseph, K.M.Varier Heavy-ion fusion cross sections and barrier distributions for 12C, 16O, 28Si and 35Cl on 92Zr NUCLEAR REACTIONS 92Zr(12C, X), E(cm)=27-45 MeV; 92Zr(16O, X), E(cm)=38-70 MeV; 92Zr(28Si, X), E(cm)=64-90 MeV; 92Zr(35Cl, X), E(cm)=76-96 MeV; calculated fusion σ, barrier distribution using a one-dimensional barrier penetration model and comparison with data.
doi: 10.1016/j.nuclphysa.2008.11.008
2008AB15 Pramana 70, 633 (2008) K.K.Abdullah, N.Ramachandran, K.K.Nair, B.R.S.Babu, A.Joseph, R.Thomas, K.M.Varier Attenuation studies near K-absorption edges using Compton scattered 241Am gamma rays ATOMIC PHYSICS Sm, Eu, Gd, Tb, Dy, Er(γ, γ'), E=49.38-57.96 keV; measured attenuation coefficients near K-absorption edges.
doi: 10.1007/s12043-008-0024-1
2008AJ01 Phys.Rev. C 77, 021601 (2008) B.P.Ajitkumar, K.M.Varier, B.V.John, A.Saxena, B.K.Nayak, D.C.Biswas, R.G.Thomas, S.Kailas Fission fragment anisotropies for the 13C+235U system at near-Coulomb barrier energies NUCLEAR REACTIONS 235U(13C, X), E(cm)=55-85 MeV; measured fission fragment spectra, anisotropies, excitation functions. 236U(12C, X); compared fission anisotropies.
doi: 10.1103/PhysRevC.77.021601
2008AJ02 Phys.Rev. C 77, 21601 (2008) B.P.Ajitkumar, K.M.Varier, B.V.John, A.Saxena, B.K.Nayak, D.C.Biswas, R.G.Thomas, S.Kailas Fission fragment anisotropies for the 13C + 235U system at near-Coulomb barrier energies NUCLEAR REACTIONS 235U(13C, f), E=59.7-79.6 MeV; measured products; deduced σ, σ(E). Data were imported from EXFOR entry D6032.
doi: 10.1103/physrevc.77.021601
2008SH21 Phys.Lett. B 670, 99 (2008) P.D.Shidling, N.Madhavan, V.S.Ramamurthy, S.Nath, N.M.Badiger, S.Pal, A.K.Sinha, A.Jhingan, S.Muralithar, P.Sugathan, S.Kailas, B.R.Behera, R.Singh, K.M.Varier, M.C.Radhakrishna Experimental signature of entrance channel effect in heavy mass region via evaporation residue cross section and spin distribution measurements NUCLEAR REACTIONS 184W(16O, F), 181Ta(19F, F), E*=50-90 MeV; measured Eγ, Iγ, (particle)γ-coin, Evaporation Residue cross sections and γ multiplicity distributions.
doi: 10.1016/j.physletb.2008.10.044
2006SH28 Phys.Rev.C 74, 064603 (2006) P.D.Shidling, N.M.Badiger, S.Nath, R.Kumar, A.Jhingan, R.P.Singh, P.Sugathan, S.Muralithar, N.Madhavan, A.K.Sinha, S.Pal, S.Kailas, S.Verma, K.Kalita, S.Mandal, R.Singh, B.R.Behera, K.M.Varier, M.C.Radhakrishna Fission hindrance studies in 200Pb: Evaporation residue cross section and spin distribution measurements NUCLEAR REACTIONS 184W(16O, xnyp), E=84, 92, 100, 108, 116, 120 MeV; measured Eγ, Iγ, fusion and evaporation residue σ; deduced spin distributions for residual nuclei, fission hindrance.
doi: 10.1103/PhysRevC.74.064603
2005KU38 Phys.Rev. C 72, 067601 (2005); Erratum Phys.Rev. C 73, 039901 (2006) B.P.A.Kumar, K.M.Varier, R.G.Thomas, K.Mahata, B.V.John, A.Saxena, H.G.Rajprakash, S.Kailas Fission fragment angular distributions of the 13C + 232Th system at near-barrier energies NUCLEAR REACTIONS 232Th(13C, X), E=55-75 MeV; measured fission fragment angular distributions, anisotropies, fusion σ.
doi: 10.1103/PhysRevC.72.067601
1999VA20 Pramana 53, 529 (1999) K.M.Varier, A.M.Vinodkumar, N.V.S.V.Prasad, P.V.M.Rao, D.L.Sastry, L.T.Baby, M.C.Radhakrishna, N.G.Puttaswamy, J.J.Das, P.Sugathan, N.Madhavan, A.K.Sinha, D.O.Kataria Transfer Measurements for the Ti + Ni Systems at Near Barrier Energies NUCLEAR REACTIONS 64Ni(46Ti, X), (48Ti, X), E=120-142 MeV; measured one-, two-neutron transfer probability; deduced effect on fusion σ.
doi: 10.1007/s12043-999-0025-8
1997KA48 Phys.Rev. C56, 1902 (1997) D.O.Kataria, A.K.Sinha, J.J.Das, N.Madhavan, P.Sugathan, L.T.Baby, I.Mazumdar, R.Singh, C.V.K.Baba, Y.K.Agarwal, A.M.Vinodkumar, K.M.Varier One- and Two-Nucleon Transfer in the 28Si + 68Zn System at Energies Below the Coulomb Barrier NUCLEAR REACTIONS, ICPND 68Zn(28Si, 29Si), (28Si, 30Si), (28Si, 27Al), (28Si, 26Mg), E=65-83 MeV; measured target-like fragment mass, E, yield; deduced two-nucleon transfer related features. 68Zn(28Si, X), E=50-70 MeV; calculated fusion σ(E). 28Si, 68Zn levels deduced β2, β3. Recoil mass separator. Semiclassical theory, coupled-channels calculations.
doi: 10.1103/PhysRevC.56.1902
1997SI26 J.Phys.(London) G23, 1331 (1997) A.K.Sinha, L.T.Baby, N.Badiger, J.J.Das, S.K.Hui, D.O.Kataria, R.G.Kulkarni, N.Madhavan, P.V.M.Rao, I.Majumdar, M.C.Radhakrishna, N.V.S.V.Prasad, N.G.Puttaswamy, P.Shakeeb, R.Singh, D.L.Shastry, P.Sugathan, V.Tripathi, K.M.Varier, A.M.Vinodkumar Sub-Barrier Few-Nucleon Transfer Reaction and Channel Coupling Effects in Heavy Ion Fusion NUCLEAR REACTIONS, ICPND 64Ni(32S, X), E not given; measured transfer reaction probabilities; 64Ni(28Si, X), E(cm)=45-65 MeV; 144Nd(28Si, X), E=110-135 MeV; measured fusion, transfer σ. HIRA recoil mass separator. Coupled-channel calculations.
doi: 10.1088/0954-3899/23/10/022
1996AC04 Nucl.Phys. A609, 91 (1996) D.Ackermann, P.Bednarczyk, L.Corradi, D.R.Napoli, C.M.Petrache, P.Spolaore, A.M.Stefanini, K.M.Varier, H.Zhang, F.Scarlassara, S.Beghini, G.Montagnoli, L.Muller, G.F.Segato, F.Soramel, C.Signorini Cross Sections and Average Angular Momenta in the Fusion of 28Si + 94,100Mo and 58,64Ni + 64Ni NUCLEAR REACTIONS 100,94Mo(28Si, X), E=85-118 MeV; 64Ni(58Ni, X), (64Ni, X), E=170-220 MeV; measured (evaporation residues)γ-coin; deduced fusion σ(E) mean-spin distribution <l>(E) around, below the Coulomb barrier. Coupled-channel calculations. Recoil mass spectrometer.
doi: 10.1016/S0375-9474(96)00282-5
1996KA55 Nucl.Instrum.Methods Phys.Res. A372, 311 (1996) D.O.Kataria, J.J.Das, N.Madhavan, P.Sugathan, A.K.Sinha, G.Dayanand, M.C.Radhakrishna, A.M.Vinodkumar, K.M.Varier, M.Singh, N.V.S.V.Prasad A Modular Focal Plane Detector System for the Heavy Ion Reaction Analyzer at NSC, New Delhi NUCLEAR REACTIONS 48Ti(32S, X), E=80 MeV; 68Zn(28Si, X), E=78 MeV; 60Ni(48Ti, X), E=160 MeV; 27Al(28Si, X), E=150 MeV; measured evaporation residue energy spectra; deduced detector characteristics. Low pressure multi-wire proportional counter plus split anode ionization detector.
doi: 10.1016/0168-9002(95)01242-7
1996PR05 Nucl.Phys. A603, 176 (1996) N.V.S.V.Prasad, A.M.Vinodkumar, A.K.Sinha, K.M.Varier, D.L.Sastry, N.Madhavan, P.Sugathan, D.O.Kataria, J.J.Das Study of Transfer Channel Coupling and Entrance Channel Effects for the Near and Sub-Barrier Fusion of 46Ti + 64Ni, 50Ti + 60Ni and 19F + 93Nb Systems NUCLEAR REACTIONS 64Ni(46Ti, X), E(cm)=72.7-92.3 MeV; 60Ni(50Ti, X), E(cm)=72.6-90.8 MeV; 93Nb(19F, X), E(cm)=44.4-59.4 MeV; measured σ(evaporation residue), σ(E). 93Nb(19F, X), E=57, 60 MeV; measured σ(E), transfer reaction. Self-supporting foils, recoil mass separator, multi-wire proportional counter.
doi: 10.1016/0375-9474(96)00110-8
1996VI01 Phys.Rev. C53, 803 (1996) A.M.Vinodkumar, K.M.Varier, N.V.S.V.Prasad, D.L.Sastry, A.K.Sinha, N.Madhavan, P.Sugathan, D.O.Kataria, J.J.Das Absence of Isotopic Dependence in the Sub-Barrier Fusion of 48Ti + 58,60,64Ni System NUCLEAR REACTIONS, ICPND 48Ti(58Ni, X), (60Ni, X), (64Ni, X), E=72-95 MeV; measured Eγ, Iγ, evaporation residue σ; deduced average spin distributions, fusion σ(E). Recoil mass seperator, enriched targets. Coupled-channels calculations.
doi: 10.1103/PhysRevC.53.803
1996VI05 Phys.Rev. C54, 791 (1996) A.M.Vinodkumar, A.K.Sinha, N.V.S.V.Prasad, K.M.Varier, P.Sugathan Fusion Systematics in the Barrier Region using the Neutron Flow Model NUCLEAR STRUCTURE A=64-208; analyzed heavy-ion induced fusion reaction data for targets from 64Ni-208Pb; deduced intersurface distance, barrier distribution width related features.
doi: 10.1103/PhysRevC.54.791
1995AC01 Nucl.Phys. A583, 129c (1995) D.Ackermann, F.Scarlassara, P.Bednarczyk, S.Beghini, L.Corradi, G.Montagnoli, L.Muller, D.R.Napoli, C.M.Petrache, K.M.Varier, F.Soramel, P.Spolaore, A.M.Stefanini, G.F.Segato, C.Signorini, H.Zhang Mean Angular Momenta in Heavy Ion Fusion NUCLEAR REACTIONS, ICPND 112Cd(16O, X), 94,100Mo(28Si, X), 64Ni(64Ni, X), (58Ni, X), E(cm) ≈ 44-110 MeV; measured fusion σ(E). Coupled-channels analyses.
doi: 10.1016/0375-9474(94)00646-5
1989VA12 Nucl.Instrum.Methods Phys.Res. A280, 428 (1989) Elastic and Inelastic Scattering of 59.54 keV Gamma Rays NUCLEAR REACTIONS 27Al, Cu, Mo, Yb, Ta, 197Au, Pb(γ, γ), E=59.54 keV; measured σ(θ). S-matrix calculations. ATOMIC PHYSICS 27Al, Cu, Mo, Yb, Ta, 197Au, Pb(γ, γ), E=59.54 keV; measured σ(θ). S-matrix calculations.
doi: 10.1016/0168-9002(89)90947-9
1987KA43 Phys.Rev. A36, 5626 (1987) P.P.Kane, G.Basavaraju, S.M.Lad, K.M.Varier, L.Kissel, R.H.Pratt Inelastic and Anomalous Elastic Scattering of 88.03-keV γ Rays ATOMIC PHYSICS 27Al, 197Au, Pb, 209Bi(γ, γ), (γ, γ'), E=88.03 keV; measured σ(θ); deduced resonance Raman, Compton scattering features.
doi: 10.1103/PhysRevA.36.5626
1979BA55 Pramana 12, 665 (1979) G.Basavaraju, P.P.Kane, K.M.Varier Elastic Scattering of 1.17 and 1.33 MeV Gamma Rays by Molybdenum, Tantalum and Lead NUCLEAR REACTIONS Pb, Ta, Mo(γ, γ), E=1.17, 1.33 MeV; measured σ(θ).
doi: 10.1007/BF02846856
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