NSR Query Results
Output year order : Descending NSR database version of April 25, 2024. Search: Author = R.K.Choudhury Found 112 matches. Showing 1 to 100. [Next]2019CH25 Europhys.Lett. 126, 12002 (2019) R.K.Choudhury, Ajay Kumar, R.G.Thomas, G.Mishra, A.Mitra, B.K.Nayak, A.Saxena Anomalous oscillatory features in neutron emission from D + D fusion in palladium at 100 keV implantation energy NUCLEAR REACTIONS 2H(d, X), E=100 keV; measured reaction products, En, In; deduced neutron yields. Comparison with GEANT4 calculations, EXFOR library.
doi: 10.1209/0295-5075/126/12002
2015CH48 Pramana 85, 199 (2015) Overview of research by the fission group in Trombay
doi: 10.1007/s12043-015-1026-4
2015DA13 Pramana 85, 379 (2015) L.S.Danu, D.C.Biswas, B.K.Nayak, R.K.Choudhury Fission fragment mass distributions via prompt γ-ray spectroscopy NUCLEAR REACTIONS 238U(18O, X), E=100 MeV; measured reaction products, Eγ, Iγ; deduced relative yield distribution of various fission fragments, fission fragment mass distributions. Comparison with available data.
doi: 10.1007/s12043-015-1052-2
2014DA07 Phys.Rev. C 89, 044607 (2014) L.S.Danu, B.K.Nayak, E.T.Mirgule, R.K.Choudhury, U.Garg Role of neutron transfer on fusion barrier distributions of the 28, 30Si + 124Sn systems NUCLEAR REACTIONS 124Sn(28Si, X), (30Si, X), E=90-118 MeV; measured projectile-like fragment (PLF) spectra, σ(E)(quasielastic)/σ(E)(Rutherford) at 14-UD BARC-TIFR Pelletron accelerator facility; deduced quasielastic fusion barrier distributions. Comparison with coupled-channel (CC) calculations using CCFULL code for one neutron transfer channel, and a code available on NRV webpage for multi-neutron transfer channels. Sensitivity to deformation parameter β4 of the 28Si projectile from NRV calculations.
doi: 10.1103/PhysRevC.89.044607
2013PA34 Pramana 81, 587 (2013) D.Patel, S.Santra, S.Mukherjee, B.K.Nayak, P.K.Rath, V.V.Parkar, R.K.Choudhury Elastic scattering and fusion cross-sections in 7Li + 27Al reaction NUCLEAR REACTIONS 27Al(7Li, 7Li), (7Li, X)30Si/29Si/28Si/26Mg/29Al, E=8-16 MeV; measured reaction products, Eα, Iα; deduced σ, σ(θ, E). Comparison with coupled-channels and transfer calculations using FRESCO.
doi: 10.1007/s12043-013-0597-1
2012BH01 Nucl.Sci.Eng. 170, 44 (2012) M.Bhike, B.J.Roy, A.Saxena, R.K.Choudhury, S.Ganesan Measurement of 232Th(n, γ)233Th, 98Mo(n, γ)99Mo, 186W(n, γ)187W, 115In(n, γ)116m1In, and 92Mo(n, p)92mNb Cross Sections in the Energy Range of 1.6 to 3.7 MeV NUCLEAR REACTIONS 232Th(n, γ), E =1.6, 2.2, 3.0, 3.7 MeV; 98Mo, 186W, 115In, 197Au(n, γ), 92Mo(n, p), E=3.2 MeV; measured reaction products, Eγ, Iγ; deduced σ. Comparison with ENDF/B-VII.0, JENDL-4.4, JEFF-3.1 evaluated nuclear libraries, EMPIRE nuclear model code calculations.
doi: 10.13182/NSE10-63
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
2012DA17 Eur.Phys.J. A 48, 186 (2012) L.S.Danu, P.K.Joshi, D.C.Biswas, S.Mukhopadhyay, A.Goswami, P.N.Prashanth, L.A.Kinage, R.K.Choudhury, B.Singh Revisiting the decay scheme and half-life of 139Ba RADIOACTIVITY 139Ba(β-); measured 139La Eγ, Iγ, γγ-coin. 139Ba deduced β-decay scheme, branching ratios, log ft to individual levels. 139La deduced levels, J, π, γ transitions, branching ratios, T1/2 of individual levels. 139Ba deduced β-decay scheme, branching ratios, log ft to individual levels. Compared with other data and ENSDF.
doi: 10.1140/epja/i2012-12186-2
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
2012MU08 Phys.Rev. C 85, 064321 (2012) S.Mukhopadhyay, L.S.Danu, D.C.Biswas, A.Goswami, P.N.Prashanth, L.A.Kinage, A.Chatterjee, R.K.Choudhury Prompt γ spectroscopic studies of fragment nuclei in thermal neutron induced fission of 235U NUCLEAR REACTIONS 235U(n, F), E=thermal; measured Eγ, Iγ, γγ-coin. 88,90Kr, 94,95,96,98Sr, 96,98,100,102Zr, 128,130,132,134,136Te, 136,137,138,139,140Xe, 140,141,142,143,144,145,146Ba; deduced yrast and near-yrast levels, J, π, isotopic yield and mean angular momentum distributions of fission fragments.
doi: 10.1103/PhysRevC.85.064321
2012RA01 Nucl.Phys. A874, 14 (2012) P.K.Rath, S.Santra, N.L.Singh, K.Mahata, R.Palit, B.K.Nayak, K.Ramachandran, V.V.Parkar, R.Tripathi, S.K.Pandit, S.Appannababu, N.N.Deshmukh, R.K.Choudhury, S.Kailas Fusion of 6Li with 152Sm: Role of projectile breakup versus target deformation NUCLEAR REACTIONS 152Sm(6Li, xn), E=20-40 MeV; measured Eγ, Iγ; deduced complete, incomplete fusion σ also for isomeric states 154Tbm1,154Tbm2, reaction mechanism; calculated σ using CC and statistical code PACE, fusion σ using proximity potentials; deduced level density parameters. Comparison of scaled σ with other reactions.
doi: 10.1016/j.nuclphysa.2011.10.004
2012YA13 Phys.Rev. C 86, 034606 (2012) C.Yadav, R.G.Thomas, R.K.Choudhury, P.Sugathan, A.Jhingan, S.Appannababu, K.S.Golda, D.Singh, Ish Mukul, J.Gehlot, E.Prasad, H.J.Wollersheim Evidence of quasifission in asymmetric reactions forming the 250Cf compound system NUCLEAR REACTIONS 238U(12C, X)250Cf(*), E=61-76 MeV; 232Th(18O, X)250Cf(*), E=80-96 MeV; measured fission fragment distributions, TOF, mass ratio versus parallel velocity plots, mass-angle correlations, fission fragment mass distribution. Evidence of quasifission in the 18O+232Th system.
doi: 10.1103/PhysRevC.86.034606
2011AP01 Phys.Rev. C 83, 034605 (2011) S.Appannababu, S.Mukherjee, B.K.Nayak, R.G.Thomas, P.Sugathan, A.Jhingan, E.Prasad, D.Negi, N.N.Deshmukh, P.K.Rath, N.L.Singh, R.K.Choudhury Fission fragment mass distributions in reactions forming the 213Fr compound nucleus NUCLEAR REACTIONS 186W(27Al, X), E=123-140 MeV; 197Au(16O, X), E=79-100 MeV; measured fission fragment spectra; deduced density plots for mass ratio vs center of mass angle, mass ratio distributions 213Fr; deduced mass variance. Comparison with theoretical calculations.
doi: 10.1103/PhysRevC.83.034605
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
2011DE29 Eur.Phys.J. A 47, 118 (2011) N.N.Deshmukh, S.Mukherjee, B.K.Nayak, D.C.Biswas, S.Santra, E.T.Mirgule, S.Appannababu, D.Patel, A.Saxena, R.K.Choudhury, J.Lubian, P.R.S.Gomes Investigation of the threshold anomaly in the near-barrier elastic scattering of 7Li on 116Sn NUCLEAR REACTIONS 116Sn(7Li, 7Li), E=18, 19, 20, 21, 22, 23, 24, 26, 30, 35 MeV; measured E(particle), I(particle, θ); calculated σ, σ(θ); deduced σ, σ(θ), optical potential parameters.
doi: 10.1140/epja/i2011-11118-0
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
2011SU23 J.Korean Phys.Soc. 59, 971s (2011) S.V.Suryanarayana, H.Naik, S.Ganesan, S.Kailas, R.K.Choudhury, G.Kim Total Cross Sections for Neutron Nucleus Scattering NUCLEAR REACTIONS 9Be, 10,11B, 13C, 19F, 24Mg, 27Al, 31P, 40Ca, 55Mn, 59Co, 89Y, 90Zr, 93Nb, 120Sn, 181Ta, 197Au, 208Pb, 209Bi, 232Th, 238U(n, X), E=20-600 MeV; calculated total σ using Ramsauer model and optical model; deduced radii, model parameters. Comparison to data.
doi: 10.3938/jkps.59.971
2010DA03 Phys.Rev. C 81, 014311 (2010) L.S.Danu, D.C.Biswas, A.Saxena, A.Shrivastava, A.Chatterjee, B.K.Nayak, R.G.Thomas, R.K.Choudhury, R.Palit, I.Mazumdar, P.Datta, S.Chattopadhyay, S.Pal, S.Bhattacharya, S.Muralithar, K.S.Golda, R.K.Bhowmik, J.J.Das, R.P.Singh, N.Madhavan, J.Gerl, S.K.Patra, L.Satpathy Fine structure dips in the fission fragment mass distribution for the 238U(18O, f) reaction NUCLEAR REACTIONS 238U(18O, F)Sr/Zr/Mo/Ru/Pd/Cd/Sn/Te/Xe/Ba/Ce/Nd/Sm, E=100 MeV; measured Eγ, Iγ, γγ-coin, fission fragment mass distribution and yields of Sr (A=90-96), Zr (A=96-102), Mo (A=98-108), Ru (A=104-112), Pd (A=108-116), Cd (A=114-122), Sn (A=116-128), Te (A=124-134), Xe (A=130-138), Ba (A=136-144), Ce (A=142-148), Nd (A=146-152) and Sm (A=150-158) using INGA array. Discussed effect of nuclear structure in the dynamical evolution of fissioning nucleus. 128Te; measured Eγ and γγ-coin.
doi: 10.1103/PhysRevC.81.014311
2010KU10 Phys.Rev. C 81, 054601 (2010) H.Kumawat, V.Jha, V.V.Parkar, B.J.Roy, S.Santra, V.Kumar, D.Dutta, P.Shukla, L.M.Pant, A.K.Mohanty, R.K.Choudhury, S.Kailas Inclusive α-production cross section for the 6Li + 90Zr system at energies near the fusion barrier NUCLEAR REACTIONS 90Zr(6Li, X), E=15, 17, 19, 21, 25, 30 MeV; measured α-spectra, σ and σ(θ). Comparison with DWBA and statistical model calculations.
doi: 10.1103/PhysRevC.81.054601
2010PA16 J.Phys.(London) G37, 085103 (2010) S.K.Patra, R.K.Choudhury, L.Satpathy Anatomy of neck configuration in fission decay NUCLEAR STRUCTURE 232,240,250,256Th, 236,250,256,260U; calculated binding energies, quadrupole deformation parameter, rms radii; deduced fission neck properties for highly deformed configurations. RMF theory.
doi: 10.1088/0954-3899/37/8/085103
2010SA19 Nucl.Phys. A834, 186c (2010) S.Santra, V.V.Parkar, K.Ramachandran, A.Shrivastava, B.J.Roy, B.K.Nayak, A.Chatterjee, R.K.Choudhury, S.Kalias Asymmetry in resonant breakup peaks in 6Li+209Bi reaction NUCLEAR REACTIONS 209Bi(6Li, α), (6Li, d), E=36, 40 MeV; measured Eα, Iα(θ), Ed, Id(θ), dα-coin; deduced σ(θ). 209Bi(6Li, 6Li), E=36, 40 MeV; measured σ(θ). Comparison with CDCC calculations. Sequential breakup via resonant state.
doi: 10.1016/j.nuclphysa.2009.12.035
2009AP03 Phys.Rev. C 80, 024603 (2009) S.Appannababu, S.Mukherjee, N.L.Singh, P.K.Rath, G.Kiran Kumar, R.G.Thomas, S.Santra, B.K.Nayak, A.Saxena, R.K.Choudhury, K.S.Golda, A.Jhingan, R.Kumar, P.Sugathan, H.Singh Absence of entrance channel effects in fission fragment anisotropies of the 215Fr compound nucleus NUCLEAR REACTIONS 197Au(18O, X)215Fr, E=77.7-96.7 MeV; 204Pb(11B, X)215Fr, E=51.5-63.5 MeV; measured fission fragment angular distributions and anisotropies of the 215Fr compound nucleus; deduced fission excitation functions, fusion barrier distributions. Comparison with standard saddle-point statistical model (SSPSM) calculations.
doi: 10.1103/PhysRevC.80.024603
2009BH06 Nucl.Sci.Eng. 163, 175 (2009) M.Bhike, A.Saxena, B.J.Roy, R.K.Choudhury, S.Kailas, S.Ganesan Measurement of 67Zn(n, p)67Cu, 92Mo(n, p)92mNb, and 98Mo(n, γ)99Mo Reaction Cross Sections at Incident Neutron Energies of En = 1.6 and 3.7 MeV NUCLEAR REACTIONS 67Zn, 92Mo(n, p), 98Mo(n, γ), E=1.6, 3.7 MeV; measured Eγ, Iγ; deduced σ. Comparison with EMPIRE-2.19 model code.
doi: 10.13182/NSE163-175
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
2009MU10 Phys.Rev. C 80, 014607 (2009) S.Mukherjee, B.K.Nayak, D.S.Monteiro, J.Lubian, P.R.S.Gomes, S.Appannababu, R.K.Choudhury Quasi-elastic scattering in the 6Li+232Th reaction NUCLEAR REACTIONS 232Th(6Li, X), E=24-38 MeV; measured σ, excitation functions, and barrier distributions. Comparison with coupled-channel calculations using a double-folding potential.
doi: 10.1103/PhysRevC.80.014607
2009RA08 Phys.Rev. C 79, 051601 (2009) P.K.Rath, S.Santra, N.L.Singh, R.Tripathi, V.V.Parkar, B.K.Nayak, K.Mahata, R.Palit, Suresh Kumar, S.Mukherjee, S.Appannababu, R.K.Choudhury Suppression of complete fusion in the 6Li+144Sm reaction NUCLEAR REACTIONS 144Sm(6Li, 2n), (6Li, 3n), E=20-40 MeV; measured Eγ, Iγ, cross sections. 159Tb, 165Ho(7Li, X), 162Dy(α, X), 160Gd(12C, X), E not given; discussed systematics of reactions. Comparison with coupled channel calculations.
doi: 10.1103/PhysRevC.79.051601
2009SA26 Phys.Lett. B 677, 139 (2009) S.Santra, V.V.Parkar, K.Ramachandran, U.K.Pal, A.Shrivastava, B.J.Roy, B.K.Nayak, A.Chatterjee, R.K.Choudhury, S.Kailas Resonant breakup of 6Li by 209Bi NUCLEAR REACTIONS 209Bi(6Li, α), E=36, 40 MeV; measured Eα, Iα, Ed, Id, (charged-particle)(charged-particle)-coin, σ, σ(θ); deduced reaction mechanism features. Comparison with coupled-channel calculations.
doi: 10.1016/j.physletb.2009.05.016
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
2008KU16 Phys.Rev. C 78, 044617 (2008) H.Kumawat, V.Jha, B.J.Roy, V.V.Parkar, S.Santra, V.Kumar, D.Dutta, P.Shukla, L.M.Pant, A.K.Mohanty, R.K.Choudhury, S.Kailas Breakup threshold anomaly in the elastic scattering for the 6Li + 90Zr system NUCLEAR REACTIONS 90Zr(6Li, 6Li), E=11, 12, 13, 14, 15, 17, 19, 21, 25, 30 MeV; measured angular distributions, σ, optical potentials, normalization factors. Comparison with Continuum Discretized Coupled Channels calculations.
doi: 10.1103/PhysRevC.78.044617
2008NA27 Phys.Rev. C 78, 061602 (2008) B.K.Nayak, A.Saxena, D.C.Biswas, E.T.Mirgule, B.V.John, S.Santra, R.P.Vind, R.K.Choudhury, S.Ganesan Determination of the 233Pa(n, f) reaction cross section from 11.5 to 16.5 MeV neutron energy by the hybrid surrogate ratio approach NUCLEAR REACTIONS 232Th(6Li, α), (6Li, d), E=38.0 MeV; measured fission spectra, charged particle spectra. 233Pa(n, F), E=11.5-16.5 MeV; deduced fission σ. Comparison with predictions of EMPIRE code.
doi: 10.1103/PhysRevC.78.061602
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
2007TH01 Phys.Rev. C 75, 024604 (2007) R.G.Thomas, A.Saxena, P.K.Sahu, R.K.Choudhury, I.M.Govil, S.Kailas, S.S.Kapoor, M.Barbui, M.Cinausero, G.Prete, V.Rizzi, D.Fabris, M.Lunardon, S.Moretto, G.Viesti, G.Nebbia, S.Pesente, B.Dalena, G.D'Erasmo, E.M.Fiore, M.Palomba, A.Pantaleo, V.Paticchio, G.Simonetti, N.Gelli, F.Lucarelli Fission and binary fragmentation reactions in 80Se + 208Pb and 80Se + 232Th systems NUCLEAR REACTIONS 208Pb, 232Th(80Se, X), E=470-630 MeV; measured fragments kinetic energy and mass distributions, neutron multiplicities; deduced reaction mechanism features.
doi: 10.1103/PhysRevC.75.024604
2006SA20 Phys.Rev. C 73, 064604 (2006) P.K.Sahu, A.Saxena, B.K.Nayak, R.G.Thomas, B.V.John, R.K.Choudhury Fusion barrier distribution derived from quasielastic excitation functions in 11B, 12C, 13C + 209Bi reactions NUCLEAR REACTIONS 209Bi(12C, X), (13C, X), E=50-72 MeV; 209Bi(11B, X), E=40-62 MeV; measured quasielastic excitation functions; deduced fusion barrier distributions.
doi: 10.1103/PhysRevC.73.064604
2005NA47 Pramana 65, 1053 (2005) B.K.Nayak, E.T.Mirgule, R.K.Choudhury Application of pulse shape discrimination in Si detector for fission fragment angular distribution measurements NUCLEAR REACTIONS 232Th(10B, F), E=64 MeV; measured fission fragment energy and angular distributions. Pulse shape discrimination.
doi: 10.1007/BF02705280
2005SA49 Phys.Rev. C 72, 034604 (2005) P.K.Sahu, R.G.Thomas, A.Saxena, R.K.Choudhury, S.S.Kapoor, L.M.Pant, M.Barbui, M.Cinausero, G.Prete, V.Rizzi, D.Shetty, D.Fabris, M.Lunardon, S.Moretto, G.Viesti, G.Nebbia, S.Pesente, B.Dalena, G.D'Erasmo, D.Di Santo, E.M.Fiore, M.Palomba, A.Pantaleo, V.Paticchio, G.Simonetti, N.Gelli, F.Lucarelli, A.Brondi, E.Vardaci Binary fragmentations of excited nuclear systems in the 372 MeV 56Fe + 232Th reaction NUCLEAR REACTIONS 232Th(56Fe, X), E=372 MeV; measured fragments kinetic energy and mass distributions, neutron spectra and multiplicities, (neutron)(fragment)-coin; deduced binary fragmentation features.
doi: 10.1103/PhysRevC.72.034604
2004FA24 Prog.Theor.Phys.(Kyoto), Suppl. 154, 417 (2004) D.Fabris, A.Saxena, G.Prete, D.V.Shetty, G.Viesti, B.K.Nayak, D.C.Biswas, R.K.Choudhury, S.S.Kapoor, M.Barbui, E.Fioretto, M.Cinausero, M.Lunardon, S.Moretto, G.Nebbia, S.Pesente, A.M.Samant, A.Brondi, G.La Rana, R.Moro, E.Vardaci, N.Gelli, F.Lucarelli Dynamical Effects in the Region of Heavy and Super-Heavy Nuclei NUCLEAR REACTIONS 232Th(28Si, X), E=340 MeV; measured transfer-induced fission yields, projectile-like fragments and neutron spectra; deduced target-like fragment excitation energy and angular momentum, dynamical effects.
doi: 10.1143/PTPS.154.417
2004SA04 Nucl.Phys. A730, 299 (2004) A.Saxena, D.Fabris, G.Prete, D.V.Shetty, G.Viesti, B.K.Nayak, D.C.Biswas, R.K.Choudhury, S.S.Kapoor, M.Lunardon, S.Moretto, G.Nebbia, S.Pesente, V.Rizzi, A.M.Samant, M.Barbui, E.Fioretto, M.Cinausero, A.Brondi, G.La Rana, R.Moro, E.Vardaci, N.Gelli, F.Lucarelli Particle multiplicities in the fission-like reactions of 340 MeV 28Si on 232Th NUCLEAR REACTIONS 232Th(28Si, F), (28Si, X), E=340 MeV; measured fission fragment spectra, Eα, En, angular correlations, pre-scission α and neutron multiplicities; deduced reaction mechanism features. Comparison with statistical and dynamical model calculations.
doi: 10.1016/j.nuclphysa.2003.11.007
2004SA57 Phys.Rev. C 70, 051602 (2004) Y.S.Sawant, A.Saxena, R.K.Choudhury, P.K.Sahu, R.G.Thomas, L.M.Pant, B.K.Nayak, D.C.Biswas Temperature and fissility dependence of fragment mass variance in heavy ion induced fission NUCLEAR REACTIONS Pb, 209Bi, 235U(12C, X), 209Bi(11B, X), E ≈ barrier; measured fission fragment kinetic energy and mass distributions; deduced temperature and fissility dependence, related features.
doi: 10.1103/PhysRevC.70.051602
2004SU25 Nucl.Instrum.Methods Phys.Res. A534, 518 (2004) C.Sunil, A.Saxena, R.K.Choudhury, L.M.Pant Neutron yield and dose equivalent from heavy ion interactions on thick target NUCLEAR REACTIONS Al(7Li, X), (11B, X), (12C, X), (19F, X), Cu(7Li, X), (12C, X), (19F, X), Ni(11B, X), (12C, X), E ≈ 22-105 MeV; measured neutron spectra, thick-target yields.
doi: 10.1016/j.nima.2004.06.131
2003DU14 Pramana 60, 1079 (2003) D.Dutta, S.V.S.Sastry, A.K.Mohanty, K.Kumar, R.K.Choudhury Photon production from quark gluon plasma at finite baryon density NUCLEAR REACTIONS Pb(Pb, X), E=high; analyzed photon yields, sensitivity to baryon density.
doi: 10.1007/BF02707034
2003PA02 Eur.Phys.J. A 16, 43 (2003) L.M.Pant, A.Saxena, R.G.Thomas, D.C.Biswas, R.K.Choudhury Pre- and Post-scission neutron multiplicities in 19F + 209Bi reaction at 108 MeV NUCLEAR REACTIONS 209Bi(19F, nF), E=108 MeV; measured pre- and post-scission neutron spectra, multiplicities, fragment mass distributions, angular correlations; deduced fusion fission dynamical time, other reaction mechanism features.
doi: 10.1140/epja/i2002-10072-2
2003SA54 Phys.Rev. C 68, 054612 (2003) P.K.Sahu, A.Saxena, R.K.Choudhury, B.K.Nayak, D.C.Biswas, L.M.Pant, R.G.Thomas, Y.S.Sawant Investigation of target shell effect in heavy ion induced transfer reactions in 11B + 208Pb and 11B + 209Bi reactions NUCLEAR REACTIONS 208Pb(11B, 12C), (11B, 12B), (11B, 13C), (11B, 9Be), (11B, 14C), (11B, 10Be), (11B, 10B), (11B, 7Li), E=69 MeV; 209Bi(11B, 8Li), (11B, 9Li), E=69 MeV; measured σ(θ), particle spectra, total transfer σ; deduced target shell closure effect.
doi: 10.1103/PhysRevC.68.054612
2003TH02 Phys.Rev. C 67, 041601 (2003) R.G.Thomas, R.K.Choudhury, A.K.Mohanty, A.Saxena, S.S.Kapoor Fission fragment angular distributions: A probe to study heavy-ion fusion dynamics NUCLEAR REACTIONS 232Th, 238U(16O, F), E(cm) ≈ 70-120 MeV; 232Th(12C, F), (10B, F), (11B, F), E(cm) ≈ 40-80 MeV; 235,236,238U(12C, F), E(cm) ≈ 50-90 MeV; analyzed fission fragment angular distributions, anisotropy; deduced role of pre-equilibrium fission, related reaction mechanism features.
doi: 10.1103/PhysRevC.67.041601
2002SA30 Phys.Rev. C65, 064601 (2002) A.Saxena, D.Fabris, G.Prete, D.V.Shetty, G.Viesti, B.K.Nayak, D.C.Biswas, R.K.Choudhury, S.S.Kapoor, M.Barbui, E.Fioretto, M.Cinausero, M.Lunardon, S.Moretto, G.Nebbia, S.Pesente, A.M.Samant, A.Brondi, G.La Rana, R.Moro, E.Vardaci, A.Ordine, N.Gelli, F.Lucarelli Fission of Targetlike Fragments Populated in the Multinucleon Transfer Reactions of 340 MeV 28Si on 232Th NUCLEAR REACTIONS 232Th(28Si, X), E=340 MeV; measured fragments charge and angular distributions; deduced transfer-induced fission mechanism features.
doi: 10.1103/PhysRevC.65.064601
2002TH06 Phys.Rev. C65, 057601 (2002) R.G.Thomas, B.K.Nayak, A.Saxena, D.C.Biswas, L.M.Pant, R.K.Choudhury Fission Fragment Anisotropies of 10B, 11B + 237Np Reactions NUCLEAR REACTIONS 237Np(10B, F), (11B, F), E ≈ 50-70 MeV; measured fission excitation functions, fragment angular distributions, anisotropies. Comparison with entrance-channel-dependent K-state model.
doi: 10.1103/PhysRevC.65.057601
2001CH93 Pramana 57, 585 (2001) Recent Studies in Heavy Ion Induced Fission Reactions
doi: 10.1007/s12043-001-0064-2
2001JO08 Phys.Rev. C63, 054301 (2001) B.John, R.K.Choudhury, B.K.Nayak, A.Saxena, D.C.Biswas Level Density Parameter in A ∼ 108-204 Nuclei at Medium Excitation Energy NUCLEAR REACTIONS 93Nb, 165Ho(19F, αX), E=73-98 MeV; 115In, 165Ho, 169Tm, 181Ta, 197Au(11B, αX), E=55-71 MeV; 165Ho(10B, αX), (12C, αX), (16O, αX), E=57-96 MeV; measured α spectra, σ(Eα, θ); deduced level density parameters, shell effects. Statistical model analysis.
doi: 10.1103/PhysRevC.63.054301
2001PA26 Eur.Phys.J. A 11, 47 (2001) L.M.Pant, R.K.Choudhury, A.Saxena, D.C.Biswas Variation of Total Kinetic Energy and Mass Distributions in the Fusion-Fission Reaction of 16O, 19F + 209Bi at Near Barrier Energies NUCLEAR REACTIONS 209Bi(16O, X), E=80-92 MeV; 209Bi(19F, X), E=88-108 MeV; measured fragments kinetic energy and mass distributions; deduced possible dynamical effects.
doi: 10.1007/s100500170095
2001SA29 Phys.Rev. C64, 014609 (2001) P.K.Sahu, R.K.Choudhury, D.C.Biswas, B.K.Nayak Evidence for Correlated Pair Transfer of Valence Nucleons in Multiparticle Stripping Channels in the 18O + 174Yb Reaction NUCLEAR REACTIONS 174Yb(16O, 15O), (16O, 17O), (16O, 15N), (16O, 14C), (16O, 13C), (16O, 12C), (16O, 11B), (18O, 16O), (18O, 17N), (18O, 15N), (18O, 14C), (18O, 13C), (18O, 12C), (18O, 11B), E=83 MeV; measured transfer σ, σ(θ); deduced correlated pair transfer.
doi: 10.1103/PhysRevC.64.014609
2001SI29 Phys.Rev. C64, 024607 (2001) S.Sinha, M.R.Pahlavani, R.Varma, R.K.Choudhury, B.K.Nayak, A.Saxena Fusion Barrier Distributions from Quasielastic Excitation Function Measurements in 16, 18O + 120, 124Sn Systems NUCLEAR REACTIONS 120,124Sn(16O, X), (18O, X), E=42-67 MeV; measured quasielastic backward angle σ; deduced fusion barrier distributions. Comparison with model predictions.
doi: 10.1103/PhysRevC.64.024607
2000BI05 Eur.Phys.J. A 7, 189 (2000) D.C.Biswas, R.K.Choudhury, M.Cinausero, B.Fornal, D.V.Shetty, G.Viesti, D.Fabris, E.Fioretto, M.Lunardon, G.Nebbia, G.Prete, D.Bazzacco, M.De Poli, D.R.Napoli, C.A.Ur, G.Vedovato Study of the Mo-Ba Partition in 252Cf Spontaneous Fission RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ γγ-coin, Mo-Ba channel fission fragment relative yields, neutron and γ-ray multiplicities; deduced no fission mode involving a hyperdeformed Ba and a spherical Mo fragment. GASP array.
doi: 10.1007/PL00013598
2000DU02 Phys.Rev. C61, 034902 (2000) D.Dutta, A.K.Mohanty, K.Kumar, R.K.Choudhury Dissipative Phenomena in a Chemically Nonequilibrated Quark Gluon Plasma
doi: 10.1103/PhysRevC.61.034902
2000DU13 Phys.Rev. C61, 064911 (2000) D.Dutta, A.K.Mohanty, K.Kumar, R.K.Choudhury Effect of Baryon Density on Parton Production, Chemical Equilibration, and Thermal Photon Emission from the Quark Gluon Plasma
doi: 10.1103/PhysRevC.61.064911
2000NA27 Phys.Rev. C62, 031601 (2000) B.K.Nayak, R.G.Thomas, R.K.Choudhury, A.Saxena, P.K.Sahu, S.S.Kapoor, R.Varma, D.Umakanth Effect of Projectile Ground State Spin on Fission Fragment Anisotropies in 10B, 11B + 232Th Reactions NUCLEAR REACTIONS 232Th(10B, F), (11B, F), E=52, 54, 58, 68 MeV; measured fission σ, fragment angular distributions; deduced role of projectile spin. Comparison with model predictions.
doi: 10.1103/PhysRevC.62.031601
2000SI04 Phys.Rev. C61, 034612 (2000) S.Sinha, R.Varma, R.K.Choudhury, B.K.Nayak, A.Saxena, R.G.Thomas, B.V.Dinesh Measurement of Quasielastic and Transfer Excitation Functions in 16O, 19F + 232Th Reactions NUCLEAR REACTIONS 232Th(16O, X), (16O, 14N), (16O, 15N), (16O, 12C), (16O, 13C), (16O, 14C), E=73-99 MeV; 232Th(19F, X), (19F, 16O), (19F, 17O), (19F, 18O), (19F, 14N), (19F, 15N), (19F, 16N), (19F, 12C), (19F, 13C), (19F, 14C), (19F, 15C), E=83-109 MeV; measured quasielastic and transfer excitation functions; deduced fusion barrier distributions, transfer probabilities. Comparison with semiclassical model.
doi: 10.1103/PhysRevC.61.034612
1999CH33 Phys.Rev. C60, 054609 (1999) R.K.Choudhury, A.Saxena, A.Chatterjee, D.V.Shetty, S.S.Kapoor, M.Cinausero, L.Corradi, E.Farnea, E.Fioretto, A.Gadea, D.Napoli, G.Prete, A.M.Stefanini, D.Bazzacco, S.Beghini, D.Fabris, G.Montagnoli, G.Nebbia, C.Rossi-Alvarez, F.Scarlassara, C.Ur, G.Viesti Fragment Spin as a Function of the Mass Asymmetry in Heavy Ion Induced Fission Reactions NUCLEAR REACTIONS 209Bi, 232Th(12C, F), E=59-90 MeV; 209Bi, 232Th(16O, F), E=80-120 MeV; measured fission fragments spin vs mass; deduced equilibration times, related features. Gasp array. Statistical model analysis.
doi: 10.1103/PhysRevC.60.054609
1999CH49 Nucl.Phys. (Supplement) A654, 845c (1999) R.K.Choudhury, A.Saxena, A.Chatterjee, D.V.Shetty, S.S.Kapoor, C.R.Alvarez, D.Bazzacco, S.Beghini, M.Cinausero, L.Corradi, D.Fabris, E.Farnea, E.Fioretto, A.Gadea, G.Hontagnoli, D.Napoli, G.Nebbia, G.Prete, F.Scarlassara, A.Stefanini, C.Ur, G.Viesti Studies of Fragment Spin as a Function of Fragment Mass in Heavy Ion Induced Fission Reactions NUCLEAR REACTIONS 209Bi, 232Th(12C, F), (16O, F), E=5-7.5 MeV/nucleon; measured fission fragment mass distributions, Eγ, (fragment)γ-coin; deduced fragment spin vs mass. GASP array, statistical model analysis.
doi: 10.1016/S0375-9474(00)88559-0
1999DU07 Phys.Rev. C60, 014905 (1999) D.Dutta, K.Kumar, A.K.Mohanty, R.K.Choudhury Chemical Equilibration and Thermal Dilepton Production from the Quark Gluon Plasma at Finite Baryon Density
doi: 10.1103/PhysRevC.60.014905
1999NA03 Phys.Rev. C59, R580 (1999) D.M.Nadkarni, A.Saxena, D.C.Biswas, R.K.Choudhury, S.S.Kapoor, N.Majumdar, P.Bhattacharya Measurement of Fission Excitation Functions in 11B, 16O, 19F + 232Th Reactions in the Extreme Sub-Barrier Energy Region NUCLEAR REACTIONS 232Th(11B, F), E=19-65 MeV; 232Th(16O, F), (19F, F), E=55-80 MeV; measured fission fragments folding angle distributions, fusion and transfer induced fission σ; deduced fusion barrier distributions, low-momentum transfer fission component.
doi: 10.1103/PhysRevC.59.R580
1999SH42 Phys.Rev. C60, 061601 (1999) D.V.Shetty, R.K.Choudhury, B.K.Nayak, D.M.Nadkarni, S.S.Kapoor Suppression of Collective Spin Excitations for High-K States in Heavy Ion Induced Fission Reactions NUCLEAR REACTIONS 209Bi(12C, F), E=71-85 MeV; 209Bi(16O, F), E=89-98 MeV; 209Bi(19F, F), E=97-111 MeV; measured fission fragments spin vs emission angle; 232Th(12C, F), (16O, F), (19F, F), E not given; analyzed fission fragments spin vs emission angle; deduced suppression of collective spin for high-K states.
doi: 10.1103/PhysRevC.60.061601
1999SH46 Pramana 53, 521 (1999) D.V.Shetty, R.K.Choudhury, B.K.Nayak, D.M.Nadkarni, S.S.Kapoor Some Aspects of Heavy Ion Fusion-Fission Dynamics NUCLEAR REACTIONS 209Bi, 232Th(12C, F), (16O, F), (19F, F), E ≈ barrier; measured Eγ, Iγ, fragments angular distribution following fission; deduced fission fragments spin vs bombarding energy and emission angle.
doi: 10.1007/s12043-999-0024-9
1998MA75 Phys.Rev.Lett. 81, 4778 (1998) N.Majumdar, P.Bhattacharya, D.C.Biswas, R.K.Choudhury, D.M.Nadkarni, A.Saxena Majumdar et al. Reply: (Comment on ' Anomalous Peaklike Structure in the Fission Fragment Anisotropies at Sub-Barrier Energies in 11B, 12C, 16O, 19F + 232Th Reactions ')
doi: 10.1103/PhysRevLett.81.4778
1998SH19 Phys.Rev. C58, R616 (1998) D.V.Shetty, R.K.Choudhury, B.K.Nayak, D.M.Nadkarni, S.S.Kapoor Emission Angle Dependence of Fission Fragment Spin in 12C, 16O, and 19F + 232Th Reactions NUCLEAR REACTIONS 232Th(12C, F), E=60-90 MeV; 232Th(16O, F), E=85-100 MeV; 232Th(19F, F), E=105-113 MeV; measured γ-ray multiplicity following fission, (fragment)γ-coin; deduced average fragment spins vs emission angle, fragments collective excitation modes. Statistical model analysis.
doi: 10.1103/PhysRevC.58.R616
1998VA11 Phys.Rev. C57, 3462 (1998) R.Varma, S.Sinha, B.K.Nayak, R.G.Thomas, A.Saxena, D.C.Biswas, L.M.Pant, D.M.Nadkarni, R.K.Choudhury, P.Bhattacharya Fusion Barrier and Spin Distributions in 12C + 232Th Reaction Via Quasielastic Scattering NUCLEAR REACTIONS 232Th(12C, X), E=51-79 MeV; measured quasielastic σ(E, θ); deduced fusion barrier, spin distributions. Model comparisons.
doi: 10.1103/PhysRevC.57.3462
1997BI08 Phys.Rev. C56, 1926 (1997) D.C.Biswas, R.K.Choudhury, B.K.Nayak, D.M.Nadkarni, V.S.Ramamurthy Single and Multinucleon Transfer in 19F, 16O, 12C + 232Th Reactions at Near Barrier Energies NUCLEAR REACTIONS 232Th(19F, X), E=92-114 MeV; 232Th(16O, X), E=86.6, 94.8 MeV; 232Th(12C, X), E=59-82 MeV; measured projectile-like fragment σ(E, Z), σ(θ) for quasielastic, transfer reactions; deduced model parameters, transfer probabilities, Q-value dependence. Semiclassical model.
doi: 10.1103/PhysRevC.56.1926
1997CH12 Z.Phys. A357, 189 (1997) R.K.Choudhury, A.Saxena, K.Kumar Understanding the Anomalous Fragment Anisotropies in Heavy-Ion Induced Fission in the Dynamical Trajectory Model NUCLEAR REACTIONS, ICPND 232Th, 237Np(12C, X), E(cm) ≈ 60-90 MeV; 232Th, 237Np(16O, X), E(cm) ≈ 80-110 MeV; 232Th, 237Np(19F, X), E(cm) ≈ 90-120 MeV; analyzed fusion σ(E), fission fragment anisotropy. Dynamical trajectory model.
doi: 10.1007/s002180050233
1997NA10 Phys.Rev. C55, 2951 (1997) B.K.Nayak, R.K.Choudhury, D.C.Biswas, L.M.Pant, A.Saxena, D.M.Nadkarni, S.S.Kapoor Studies of One- and Two-Proton Transfer in 12C, 16O + 154Sm, and 16O + 115In Reactions NUCLEAR REACTIONS 154Sm(16O, X), E=100 MeV; 154Sm(12C, X), E=86 MeV; 115In(16O, X), E=90 MeV; measured σ(θ), spectra for 1p, 2p transfer channels; deduced transfer probabilities. Binding energies from semiclassical model, slope anomaly.
doi: 10.1103/PhysRevC.55.2951
1997SH22 Phys.Rev. C56, 868 (1997) D.V.Shetty, R.K.Choudhury, B.K.Nayak, D.M.Nadkarni, S.S.Kapoor Investigation of Fusion l Distributions at Near and Sub-Barrier Energies Through Fission Fragment γ Ray Multiplicity Measurements NUCLEAR REACTIONS 232Th(12C, F), E=60-86 MeV; 232Th(16O, F), E=84-100 MeV; measured fission fragment γ multiplicity vs E(beam); deduced fission fragment, compound nucleus spin distributions, nonequilibrium processes at sub-barrier energies.
doi: 10.1103/PhysRevC.56.868
1996CH13 Phys.Rev. C53, 2739 (1996) D.R.Chakrabarty, V.M.Datar, R.K.Choudhury, B.K.Nayak, Y.K.Agarwal, C.V.K.Baba, M.K.Sharan Study of Nuclear Shapes in Tl Isotopes Via Excited State Giant Dipole Resonance Studies in the Reaction 16O + 181Ta NUCLEAR REACTIONS 181Ta(16O, X), E=84-107 MeV; measured Eγ, Iγ, γ-anisotropy; deduced Tl isotopes shape features, GDR parameters.
doi: 10.1103/PhysRevC.53.2739
1996MA03 Phys.Rev. C53, R544 (1996) N.Majumdar, P.Bhattacharya, D.C.Biswas, R.K.Choudhury, D.M.Nadkarni, A.Saxena Reexamination of the Nuclear Orientation Model of Quasifission Reactions to Explain Anomalous Fragment Anisotropies at Sub-Barrier Energies NUCLEAR REACTIONS 232Th(19F, F), E=84.5-106.5 MeV; 232Th(16O, F), E=95-77 MeV; 232Th(12C, F), E=54-84 MeV; measured fission fragment σ(θ), fusion σ(E).
doi: 10.1103/PhysRevC.53.R544
1996MA61 Phys.Rev.Lett. 77, 5027 (1996) N.Majumdar, P.Bhattacharya, D.C.Biswas, R.K.Choudhury, D.M.Nadkarni, A.Saxena Anomalous Peaklike Structure in the Fission Fragment Anisotropies at Sub-Barrier Energies in 11B, 12C, 16O, 19F + 232Th Reactions NUCLEAR REACTIONS 232Th(19F, F), E=73.5-80 MeV; 232Th(16O, F), E=69.2-74.8 MeV; 232Th(11B, F), E=43-49.7 MeV; 232Th(12C, F), E(cm)=40-70 MeV; measured fission fragment σ(θ); deduced anomalous peaklike structure explanation possibility.
doi: 10.1103/PhysRevLett.77.5027
1996PA27 Phys.Rev. C54, 2037 (1996) L.M.Pant, A.Saxena, R.K.Choudhury, D.M.Nadkarni Mass Dependence of Fragment Anisotropy in the Fission of 11B + 237Np and 16O + 209Bi Systems NUCLEAR REACTIONS 237Np(11B, F), E=76 MeV; 209Bi(16O, F), E=100 MeV; measured fission fragment angular anisotropy, mass dependence, mass, energy correlations. Statistical model analysis.
doi: 10.1103/PhysRevC.54.2037
1995BH08 Nuovo Cim. 108, 819 (1995) P.Bhattacharya, N.Majumdar, P.Basu, M.L.Chatterjee, D.C.Biswas, A.Saxena, V.S.Ambekar, R.K.Choudhury, D.M.Nadkarni Measurement of Complete Fusion-Fission and Transfer-Fission Cross-Sections and Angular Distributions for 19F + 232Th at Sub-Barrier Energies by Fission Fragment Folding-Angle Technique NUCLEAR REACTIONS, ICPND 232Th(19F, F), E=78.5-106.5 MeV; measured σ(fragment) vs θ(folding) for transfer-, fusion fission, σ(E).
1995BI21 Phys.Rev. C52, R2827 (1995) D.C.Biswas, R.K.Choudhury, D.M.Nadkarni, V.S.Ramamurthy Evidence of Massive Cluster Transfers in 19F + 232Th Reaction at Near Barrier Energies NUCLEAR REACTIONS 232Th(19F, X), E=113.6, 106.5 MeV; measured σ(fragment θ); deduced reduced transfer probability, Q-value dependence.
doi: 10.1103/PhysRevC.52.R2827
1995CH65 Pramana 44, 177 (1995) R.K.Choudhury, D.M.Nadkarni, V.S.Ambekar, B.V.Dinesh, A.Saxena, M.S.Samant, D.C.Biswas, L.M.Pant Deep Inelastic Collisions of 32S + 27Al Reaction at 130 MeV Bombarding Energy NUCLEAR REACTIONS 27Al(32S, X), E=130 MeV; measured fragment distribution for Z=6-10, average kinetic energy vs fragment Z; deduced highly stretched scission configurations.
doi: 10.1007/BF02847697
1995MA41 Phys.Rev. C51, 3109 (1995) N.Majumdar, P.Bhattacharya, D.C.Biswas, R.K.Choudhury, D.M.Nadkarni, A.Saxena Fission-Fragment Angular Distributions and Excitation Functions in Fission Following Complete Fusion and Targetlike-fragment Fission Reactions of 19F + 232Th at Near- and Sub-Barrier Energies NUCLEAR REACTIONS 232Th(19F, F), E=84.5-106.5 MeV; measured fission σ(E), σ(fragment θ). Coupled-channels analysis.
doi: 10.1103/PhysRevC.51.3109
1995NA21 Phys.Rev. C52, 3081 (1995) B.K.Nayak, R.K.Choudhury, L.M.Pant, D.M.Nadkarni, S.S.Kapoor Fusion l Distribution in 16O, 28Si + 115In Reactions at Near- and Sub-Barrier Energies NUCLEAR REACTIONS 115In(16O, X), E=55-80 MeV; 115In(28Si, X), E=105-115 MeV; measured Eα, γ-multiplicity distributions; deduced l-distribution moments. One-dimensional barrier penetration model.
doi: 10.1103/PhysRevC.52.3081
1995SA27 Phys.Rev. C51, 3127 (1995) M.S.Samant, R.P.Anand, R.K.Choudhury, S.S.Kapoor, D.M.Nadkarni Prescission Neutron Emission in 235U(n(th), f) Through Fragment-Neutron Angular Correlation Studies NUCLEAR REACTIONS 235U(n, F), E=thermal; measured prompt neutron energy spectra, σ(θ), (fragment)(n)(θ) following fission; deduced prescission neutron multiplicity.
doi: 10.1103/PhysRevC.51.3127
1994BI17 Nucl.Instrum.Methods Phys.Res. A340, 551 (1994) D.C.Biswas, V.S.Ambekar, L.M.Pant, B.V.Dinesh, R.K.Choudhury A Position Sensitive Ionisation Chamber for Measurement of Fission Fragments and Medium Mass Heavy Ions RADIOACTIVITY 252Cf(SF); measured fission fragment energy distributions. Position sensitive ionization chamber telescope. NUCLEAR REACTIONS 232Th(10B, F), E=60 MeV; measured fission fragment energy distributions. Position sensitive ionization chamber telescope.
doi: 10.1016/0168-9002(94)90137-6
1994CH17 Nucl.Phys. A569, 93c (1994) R.K.Choudhury, K.L.Wolf, H.Jabs, J.Schoemaker, J.B.Natowitz, K.Hagel, Y.Lou, R.Wada, R.P.Schmitt, W.Turmel, H.Xu Giant Dipole Resonance Gamma Decay of 142Nd Nuclei Produced by 16O + 126Te and 22Ne + 120Sn Reactions at E(*) = 150 MeV NUCLEAR REACTIONS 126Te(16O, X), E=179 MeV; 120Sn(22Ne, X), E=193 MeV; measured particle, γ-spectra. 142Nd deduced GDR parameters, no entrance channel effects.
doi: 10.1016/0375-9474(94)90099-X
1994KU41 Pramana 42, 123 (1994) K.Kumar, R.K.Choudhury, A.Saxena Mass Asymmetry Dependence of Fusion Time-Scales in 11B + 237Np and 12C, 16O, 19F + 232Th Reactions in a Dynamical Trajectory Model NUCLEAR REACTIONS 237Np(11B, X), E=77 MeV; 232Th(19F, X), E=104 MeV; 232Th(12C, X), E=77 MeV; 232Th(16O, X), E=104 MeV; calculated composite system shape time evolution, formation time vs angular momentum.
doi: 10.1007/BF02847507
1994SA03 Phys.Rev. C49, 932 (1994) A.Saxena, A.Chatterjee, R.K.Choudhury, S.S.Kapoor, D.M.Nadkarni Entrance Channel Effects in the Fusion-Fission Time Scales from Studies of Prescission Neutron Multiplicities NUCLEAR REACTIONS 232Th(11B, F), E not given; 232Th(12C, F), E=86 MeV; 232Th(16O, F), E=104 MeV; 237Np(11B, F), E=77 MeV; measured neutron emission spectra, different angles; deduced pre-scission neutron multiplicities in fusion-fission reactions, fusion-fission time-scales, transient, saddle-to-scission, formation delays.
doi: 10.1103/PhysRevC.49.932
1993KA35 Pramana 41, 339 (1993) S.Kailas, A.Navin, A.Chatterjee, P.Singh, A.Saxena, D.M.Nadkarni, D.C.Biswas, R.K.Choudhury, S.S.Kapoor Sub-Barrier Fission Fragment Angular Distributions for the System 19F + 232Th NUCLEAR REACTIONS 232Th(19F, F), E=89.3-93.6 MeV; measured fission fragment σ(θ), anisotropy. Statistical model analysis.
doi: 10.1007/BF02847398
1993SA25 Pramana 40, 299 (1993) M.S.Samant, R.P.Anand, R.K.Choudhury, S.S.Kapoor, K.Kumar, D.M.Nadkarni, A.Saxena Prompt Neutron Emission Spectra and Multiplicities in the Thermal Neutron Induced Fission of 235U NUCLEAR REACTIONS 235U(n, F), E=thermal; measured fission fragment neutron emission spectra, total kinetic energies, multiplicities.
doi: 10.1007/BF02845849
1992RA10 Nucl.Instrum.Methods Phys.Res. A313, 227 (1992) M.N.Rao, S.R.S.Murthy, R.K.Choudhury Determination of Fission Fragment Angle by the Methods of Grid Pulse Height and the Time Difference between Grid and Collector Pulses in a Back-to-Back Gridded Ionisation Chamber NUCLEAR REACTIONS 235U(n, F), E=thermal; measured fission fragment σ(θ), mass, kinetic energy correlations. Back-to-back gridded ionization chamber.
doi: 10.1016/0168-9002(92)90100-I
1991KA03 Phys.Rev. C43, 1466 (1991) S.Kailas, A.Navin, A.Chatterjee, P.Singh, R.K.Choudhury, A.Saxena, D.M.Nadkarni, S.S.Kapoor, V.S.Ramamurthy, B.K.Nayak, S.V.Suryanarayana Fission Fragment Angular Distributions for the System 19F + 232Th NUCLEAR REACTIONS 232Th(19F, F), E=94-108 MeV; measured fission fragment σ(θ), anisotropy; deduced entrance channel dependences. Saddle-point statistical model.
doi: 10.1103/PhysRevC.43.1466
1991VA02 Phys.Rev. C43, 1850 (1991) R.Varma, G.K.Mehta, R.K.Choudhury, S.S.Kapoor, B.K.Nayak, V.S.Ramamurthy Prompt Gamma-Ray Multiplicity Distributions in Spontaneous Fission of 252Cf RADIOACTIVITY 252Cf(SF); measured prompt γ-ray multiplicity distribution; deduced fission fragment average spin, width.
doi: 10.1103/PhysRevC.43.1850
1990RA17 Nucl.Instrum.Methods Phys.Res. B51, 102 (1990) M.N.Rao, D.C.Biswas, R.K.Choudhury Charge Determination of Fission Fragments via Energy Loss and X-Ray Measurements RADIOACTIVITY 252Cf(SF); measured fission fragment X-ray spectra, X-ray yields; deduced fission fragment charge distribution.
doi: 10.1016/0168-583X(90)90509-S
1987CH04 Nucl.Phys. A463, 597 (1987) R.K.Choudhury, A.Saxena, V.S.Ramamurthy, D.M.Nadkarni, S.S.Kapoor Variation of Kinetic Energy Distributions of Fission Fragments with Bombarding Energy in 4He Induced Fision of 238U at Medium Energies NUCLEAR REACTIONS, ICPND 238U(α, F), E=32, 40, 48, 56 MeV; measured fission fragment yield vs mass, kinetic energy distributions.
doi: 10.1016/0375-9474(87)90632-4
1987NA01 Phys.Rev. C35, 149 (1987) M.N.Namboodiri, R.K.Choudhury, L.Adler, J.D.Bronson, D.Fabris, U.Garg, P.L.Gonthier, K.Hagel, D.R.Haenni, Y.W.Lui, Z.Majka, G.Mouchaty, T.Murakami, J.B.Natowitz, G.Nebbia, R.P.Schmitt, S.Simon, J.P.Sullivan, D.H.Youngblood Linear Momentum and Angular Momentum Transfer in the Reactions of 16O with 154Sm NUCLEAR REACTIONS 154Sm(16O, X), E=180, 310 MeV; measured (ejectile)γ-, (residue)γ-coin, σ(fragment θ, E), < Eγ > vs fragment for X=6,7Li, 7,9,10Be, 10,11B, 11,12,13,14C, 13,14,15N, 15,16,17O; deduced angular, linear momentum transfer correlation.
doi: 10.1103/PhysRevC.35.149
1984CH17 Phys.Lett. 143B, 74 (1984) R.K.Choudhury, P.L.Gonthier, K.Hagel, M.N.Namboodiri, J.B.Natowitz, L.Adler, S.Simon, S.Kniffen, G.Berkowitz Evidence for Large Angular Momentum Induced Deformations of 59Cu NUCLEAR REACTIONS 27Al(32S, X), E=105, 214 MeV; measured σ(θα, Eα), (fusion residue)α-, (evaporation residue)α-coin. 59Cu deduced large angular momentum induced deformations. Rotating liquid drop model.
doi: 10.1016/0370-2693(84)90807-4
1984KU22 Phys.Rev. C30, 2096 (1984) K.Kumar, R.K.Choudhury, V.S.Ramamurthy, S.S.Kapoor Dynamical Aspects of the Correlation between Nucleon Exchange and Energy Loss for the 136Xe + 209Bi System NUCLEAR REACTIONS 209Bi(136Xe, X), E=825-1650 MeV; calculated fragment mass, charge variances, energy loss correlation; deduced nucleon exchange rate. Classical dynamic, one-body transport models.
doi: 10.1103/PhysRevC.30.2096
1984SI15 Nucl.Phys. A430, 249 (1984) S.H.Simon, P.L.Gonthier, R.K.Choudhury, M.N.Namboodiri, K.Hagel, S.Kniffen, R.Patton, L.Adler, J.B.Natowitz The Reactions of 12C with 12C at 293 MeV NUCLEAR REACTIONS 12C(12C, X), E=293 MeV; measured σ(fragment θ, E) for Z=1-9; deduced reaction σ, mechanisms. Incomplete fusion model.
doi: 10.1016/0375-9474(84)90204-5
1983NA08 Phys.Rev. C28, 460 (1983) M.N.Namboodiri, R.K.Choudhury, J.B.Natowitz, K.Hagel, L.Adler, P.L.Gonthier, H.Simon, S.Kniffen, R.Patton, E.Tomasi, C.Ngo, C.Mazur, M.Ribrag Momentum Widths in the Fragmentation of 32 MeV/u 10B NUCLEAR REACTIONS 181Ta(10B, p), (10B, t), (10B, 3He), (10B, α), (10B, 9Be), (10B, 7Li), (10B, 6Li), E=320 MeV; measured σ(light fragment θ, E); deduced fragment momentum widths. Projectile fragmentation model.
doi: 10.1103/PhysRevC.28.460
1983SA10 Nucl.Phys. A400, 435c (1983) R.C.Sarantites, M.Jaaskelainen, F.A.Dilmanian, H.Puchta, R.Woodward, J.R.Beene, D.C.Hensley, M.L.Halbert, J.Hattula, J.H.Barker, R.Novotny, L.Adler, R.K.Choudhury, M.N.Namboodiri, R.P.Schmitt, J.B.Natowitz Research Highlights with the Spin Spectrometer NUCLEAR REACTIONS 146Nd(20Ne, 8n), E=136 MeV; 146Nd(20Ne, 6n), (20Ne, 7n), E=136, 149 MeV; 144Nd(20Ne, 6n), (20Ne, 7n), 146Nd(20Ne, 8n), E=149 MeV; measured continuum γ-spectra, γ-multiplicities; deduced fusion reaction, entry state energy, angular momentum dependences. 160,158,159Yb deduced effective moment of inertia vs spin, entry line energy vs γ-multiplicity, localized stretched dipole transition. 157,161Yb deduced localized stretched dipole transition.
doi: 10.1016/0375-9474(83)90448-7
1982DI16 Phys.Rev.Lett. 49, 1909 (1982) F.A.Dilmanian, D.G.Sarantites, M.Jaaskelainen, H.Puchta, R.Woodward, J.R.Beene, D.C.Hensley, M.L.Halbert, R.Novotny, L.Adler, R.K.Choudhury, M.N.Namboodiri, R.P.Schmitt, J.B.Natowitz Alpha-Particle Angular Distributions with Respect to Spin Direction NUCLEAR REACTIONS 150Nd(20Ne, xα), E=176 MeV; measured σ(θ, Eα) vs γ-multiplicity, evaporation residue spin direction; deduced α-emitting nucleus deformation characteristics.
doi: 10.1103/PhysRevLett.49.1909
1981CH23 J.Phys.(London) G7, 1247 (1981) R.K.Choudhury, R.Govil, S.S.Kapoor A Study of the Friction Force Dependence of the Heavy-Ion Fusion Cross Sections NUCLEAR REACTIONS 116Sn(37Cl, X), E(cm) ≈ 100-400 MeV; 14N, 12C(12C, X), E(cm) ≈ 7-100 MeV; 24Mg(32S, X), E(cm) ≈ 33-200 MeV; 27Al(12C, X), E(cm)=10-100 MeV; calculated σ(fusion, E); deduced dependence on friction force strength. Classical, dynamical trajectory calculations.
doi: 10.1088/0305-4616/7/9/016
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