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Search: Author = S.Kalkal

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2023KU28      Eur.Phys.J. A 59, 277 (2023)

C.Kumar, Gonika, Yashraj, R.Biswas, S.Kalkal, S.Nath

Coupled reaction channel analysis of one- and two-nucleon transfer in 28Si+90, 94Zr

NUCLEAR REACTIONS 90Zr(28Si, 29Si)89Zr, 94Zr(28Si, 29Si)93Zr, 94Zr(28Si, 27Al)95Nb, 90Zr(28Si, 27Al)91Nb, 94Zr(28Si, 30Si)92Zr, 94Zr(28Si, 26Mg)96Mo, 90Zr(28Si, 26Mg)92Mo, E(cm)=60-80 MeV; calculated σ(θ) using the coupled reaction channel (CRC) formalism. Comparison with available data.

doi: 10.1140/epja/s10050-023-01195-1
Citations: PlumX Metrics

2022NO08      Eur.Phys.J. A 58, 129 (2022)

S.Noor, S.Kalkal, B.K.Guron, N.Madhavan, S.Nath, J.Gehlot, Gonika, R.Biswas, C.Kumar, A.Rani, A.Parihari

Channel coupling effects in interactions of 19F with 64, 68Zn at energies around the Coulomb barrier

NUCLEAR REACTIONS 64,68Zn(18F, X), E=40-60 MeV; measured reaction products; deduced fusion σ, Wood-Saxon potential parameters. Comparison with 1d-BPM, CCFULL and GRAZING calculations, CCDEF calculations. Heavy Ion Reacti on Analyzer (HIRA) at Inter-University Accelerator Center (IUAC), New Delhi.

doi: 10.1140/epja/s10050-022-00783-x
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6438.

2021BI03      Eur.Phys.J. A 57, 9 (2021)

R.Biswas, S.Kalkal, S.Nath

Studying multi-nucleon transfer reaction in a recoil mass spectrometer

NUCLEAR REACTIONS 94Zr(28Si, X), E=92.5 MeV; analyzed available data; calculated energy distribution of scattered target-like ions within the entrance aperture, charge state distribution of scattered target-like ions, trajectories and spectra, transmission efficiency, σ(θ) using a semi-microscopic Monte Carlo computer code.

doi: 10.1140/epja/s10050-020-00323-5
Citations: PlumX Metrics

2021KA31      Int.J.Mod.Phys. E30, 2150053 (2021)

S.Kalkal, S.Mandal, N.Madhavan, A.Jhingan, S.Nath, E.Prasad, R.Sandal, S.Goyal, M.Saxena, G.Mohanto, S.Verma, B.R.Behera, S.Kumar, U.Datta, A.K.Sinha, R.Singh, S.Noor

Ground state and excited state multinucleon transfer channels in interactions of 28Si with 90, 94Zr in near barrier region

NUCLEAR REACTIONS 90,94Zr(28Si, X), E=95.5 MeV; measured reaction products; deduced ground and excited states transfer reaction yields.

doi: 10.1142/S0218301321500531
Citations: PlumX Metrics

2019KH10      Phys.Rev. C 100, 064612 (2019)

Khushboo, N.Madhavan, S.Nath, A.Jhingan, J.Gehlot, B.Behera, S.Verma, S.Kalkal, S.Mandal

Searching the reason for sub-barrier fusion enhancement through multineutron transfer channels

NUCLEAR REACTIONS 70Zn(40Ca, X), E=106-142 MeV; measured evaporation residues, yields, fusion σ(E) using the Heavy-Ion Reaction Analyzer (HIRA) array at the Pelletron accelerator of IUAC-New Delhi; investigated effects of positive Q-value multi-neutron transfer channels on sub-barrier fusion. Comparison with coupled-channels calculations using CCFULL and ECC codes, including 3- excited state in 40Ca. 40,48Ca, 58,64Ni, 90,94,96Zr(40Ca, X), E(cm)=-3 to +3 MeV; analyzed experimental σ(fusion) data in literature.

doi: 10.1103/PhysRevC.100.064612
Citations: PlumX Metrics

2018CO01      Phys.Rev. C 97, 021601 (2018)

K.J.Cook, I.P.Carter, E.C.Simpson, M.Dasgupta, D.J.Hinde, L.T.Bezzina, S.Kalkal, C.Sengupta, C.Simenel, B.M.A.Swinton-Bland, K.Vo-Phuoc, E.Williams

Interplay of charge clustering and weak binding in reactions of 8Li

NUCLEAR REACTIONS 209Bi(8Li, X), E=38.2-40.9 MeV, [secondary 8Li from primary reaction 9Be(7Li, 8Li)8Be, E=45 MeV using SOLEROO separator at Australian National University]; measured proton, deuteron, triton, α, 7,8Li spectra using two ΔE-E telescopes, energy and angle, αα-, αt-, αd-, and αp-coin; deduced total α production σ, energy averages σ(θ) for singles and coincidence events, reaction Q values, relative energy distribution, 8Li breakup into charged clusters; calculated time of breakup for αt-pairs using classical dynamical model.

doi: 10.1103/PhysRevC.97.021601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0896.

2017MO40      Phys.Rev.Lett. 119, 222502 (2017)

M.Morjean, D.J.Hinde, C.Simenel, D.Y.Jeung, M.Airiau, K.J.Cook, M.Dasgupta, A.Drouart, D.Jacquet, S.Kalkal, C.S.Palshetkar, E.Prasad, D.Rafferty, E.C.Simpson, L.Tassan-Got, K.Vo-Phuoc, E.Williams

Evidence for the Role of Proton Shell Closure in Quasifission Reactions from X-Ray Fluorescence of Mass-Identified Fragments

NUCLEAR REACTIONS 238U(48Ti, X), E=276 MeV; measured reaction products, characteristic fluorescence x rays; deduced photon spectrum, fragment yields.

doi: 10.1103/PhysRevLett.119.222502
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2016CO11      Phys.Rev. C 93, 064604 (2016)

K.J.Cook, E.C.Simpson, D.H.Luong, S.Kalkal, M.Dasgupta, D.J.Hinde

Importance of lifetime effects in breakup and suppression of complete fusion in reactions of weakly bound nuclei

NUCLEAR REACTIONS 144Sm(9Be, X), E=25-28 MeV; 168Er(9Be, X), E=28-31 MeV; 196Pt, 186W(9Be, X), E=28-34 MeV; 208Pb, 209Bi(9Be, X), E=28-37 MeV; analyzed previous extensive sub-barrier breakup measurements (see 2010Ra03 reference) at 14UD electrostatic accelerator of ANU by explicit inclusion of excitation energies and lifetimes of unbound resonances, and improved efficiency determination of the BALiN detector array; deduced Q-values, relative energy, angular correlation of breakup modes, below-barrier near-target breakup probability versus distance of closest approach, above-barrier complete fusion suppression and fraction of incomplete fusion using classical dynamical model. Systematics of complete fusion suppression.

doi: 10.1103/PhysRevC.93.064604
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2016KA16      Phys.Rev. C 93, 044605 (2016)

S.Kalkal, E.C.Simpson, D.H.Luong, K.J.Cook, M.Dasgupta, D.J.Hinde, I.P.Carter, D.Y.Jeung, G.Mohanto, C.S.Palshetkar, E.Prasad, D.C.Rafferty, C.Simenel, K.Vo-Phuoc, E.Williams, L.R.Gasques, P.R.S.Gomes, R.Linares

Asymptotic and near-target direct breakup of 6Li and 7Li

NUCLEAR REACTIONS 58Ni(6Li, X), (7Li, X), E=13.07 MeV; 64Zn(6Li, X), E=13.55 MeV; 64Zn(7Li, X), E=13.60 MeV; measured energy, position, and time of flight (TOF) of the charged breakup fragments in coincidence mode using BALiN array, spectra of α-d and α-t breakup pairs at ANU Heavy Ion accelerator facility; deduced prompt and asymptotic breakups, probability of populating the excitation energies above the breakup threshold for 3+ resonant states of 6Li, excitation energy dependent mean-lives, β versus θ12 distributions, asymptotic, near-target, and total direct breakup differential σ(θ). Simulations using a modified version of Monte Carlo classical trajectory model code PLATYPUS.

doi: 10.1103/PhysRevC.93.044605
Citations: PlumX Metrics

2016SI04      Phys.Rev. C 93, 024605 (2016)

E.C.Simpson, K.J.Cook, D.H.Luong, S.Kalkal, I.P.Carter, M.Dasgupta, D.J.Hinde, E.Williams

Disintegration locations in 7Li → 8Be transfer-triggered breakup at near-barrier energies

NUCLEAR REACTIONS 58Ni(7Li, X), E=13.1 MeV; measured spectra of charged particles, relative energy distributions for the two α particles from 7Li proton pickup, αα-coin and αα(θ) from breakup process using the Breakup Array for Light Nuclei (BALiN) at 14UD tandem accelerator of the Australian National University; deduced large angular separations of the α fragments. Data consistent with disintegration of 0+ ground state and 2+ resonance of 8Be. Transfer-induced breakup reactions. Comparison with classical dynamical model simulations using a modified version of PLATYPUS code.

doi: 10.1103/PhysRevC.93.024605
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2015GA39      Phys.Rev. C 92, 054325 (2015), Erratum Phys.Rev. C 100, 069901 (2019)

R.Garg, S.Kumar, M.Saxena, S.Goyal, D.Siwal, S.Kalkal, S.Verma, R.Singh, S.C.Pancholi, R.Palit, D.Choudhury, S.S.Ghugre, G.Mukherjee, R.Kumar, R.P.Singh, S.Muralithar, R.K.Bhowmik, S.Mandal

Negative-parity high-spin states and a possible magnetic rotation band in 13559Pr76

NUCLEAR REACTIONS 123Sb(16O, 4n), E=82 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using INGA array at IUAC-Delhi. 135Pr; deduced high-spin levels, J, π, multipolarity, bands, magnetic-dipole band, configuration, B(M1)/B(E2). Comparison with tilted Axis Cranking (TAC) calculations by considering 3qp and 5qp configurations, and with structure 137Pr.

doi: 10.1103/PhysRevC.92.054325
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Data from this article have been entered in the XUNDL database. For more information, click here.

2015MU14      Phys.Rev. C 92, 054606 (2015)

I.Mukul, S.Nath, K.S.Golda, A.Jhingan, J.Gehlot, E.Prasad, S.Kalkal, M.B.Naik, T.Banerjee, T.Varughese, P.Sugathan, N.Madhavan, S.Pal

Probing fusion-fission dynamics in 203Bi

NUCLEAR REACTIONS 184W(19F, X), E=84.8, 89.8, 94.8, 99.8, 104.8, 109.8, 114.8, 119.8, 124.8 MeV; measured reaction products, (fission fragment)n-coin, fission fragment mass distributions, mass-angle distributions (MAD plots), double differential σ(E, θ) for evaporated neutrons, pre-scission and post-scission neutron multiplicities at 15UD Pelletron facility of UAC-Delhi; deduced no significant mass-angle correlations, Gaussian shape of fragment mass distributions, dissipative nature of decay of compound nuclei (CN), No clear signatures of non-CN fission (NCNF) processes. Statistical model (SM) calculation.

doi: 10.1103/PhysRevC.92.054606
Citations: PlumX Metrics

2014KA10      Phys.Rev. C 89, 034621 (2014)

M.Kaur, B.R.Behera, G.Singh, V.Singh, R.Sandal, A.Kumar, H.Singh, G.Singh, K.P.Singh, N.Madhavan, S.Nath, A.Jhingan, J.Gehlot, K.S.Golda, P.Sugathan, D.Siwal, S.Kalkal, E.Prasad, S.Appannababu

Anomalous deviations from statistical evaporation spectra for the decay of the 73Br and 77Rb compound systems

NUCLEAR REACTIONS 45Sc(28Si, X)73Br*, E=125 MeV; 45Sc(32S, X)77Rb*, E=125 MeV; measured inclusive and exclusive light charged-particle and neutron spectra, time-of flight, energy loss versus time-of-flight, σ for α particles, protons, evaporation residue σ using HIRA spectrometer at IUAC accelerator facility. Comparison with statistical model calculations using CASCADE code. Discussed effects of multistep compound (MSC) process.

doi: 10.1103/PhysRevC.89.034621
Citations: PlumX Metrics

2013SA01      Phys.Rev. C 87, 014604 (2013); Erratum Phys.Rev. C 87, 069901 (2013)

R.Sandal, B.R.Behera, V.Singh, M.Kaur, A.Kumar, G.Singh, K.P.Singh, P.Sugathan, A.Jhingan, K.S.Golda, M.B.Chatterjee, R.K.Bhowmik, S.Kalkal, D.Siwal, S.Goyal, S.Mandal, E.Prasad, K.Mahata, A.Saxena, J.Sadhukhan, S.Pal

Effect of N/Z in pre-scission neutron multiplicity for 16, 18O + 194, 198Pt systems

NUCLEAR REACTIONS 194,198Pt(16O, X), (18O, X)210Rn*/212Rn*/214Rn*/216Rn*, E=50, 61, 71.7, 79 MeV; measured fission fragment and neutron spectra by TOF, σ(E, θ) using NAND neutron detector array at LINAC+Pelletron facility at IUAC; deduced pre-scission neutron multiplicity. Statistical model analysis. Shell closure effect at N=126 for 212Rn.

doi: 10.1103/PhysRevC.87.014604
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6203.

2012KA06      Phys.Rev. C 85, 034606 (2012)

S.Kalkal, S.Mandal, A.Jhingan, J.Gehlot, P.Sugathan, K.S.Golda, N.Madhavan, R.Garg, S.Goyal, G.Mohanto, R.Sandal, S.Chakraborty, S.Verma, B.Behera, G.Eleonora, H.J.Wollersheim, R.Singh

Measurements and coupled reaction channels analysis of one- and two-proton transfer reactions for the 28Si + 90, 94Zr systems

NUCLEAR REACTIONS 90,94Zr(28Si, X), E=120 MeV; measured E(particle), energy loss, time of flight, σ(θ) for one-proton and two-proton stripping channels. Comparison with the coupled reaction channels (CRC) code FRESCO. DWBA analysis of σ(θ) data. Contribution of indirect multistep and sequential transfer to the two-proton stripping reaction above the Coulomb barrier.

doi: 10.1103/PhysRevC.85.034606
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6195.

2011KA16      Phys.Rev. C 83, 054607 (2011)

S.Kalkal, S.Mandal, N.Madhavan, A.Jhingan, E.Prasad, R.Sandal, S.Nath, J.Gehlot, R.Garg, G.Mohanto, M.Saxena, S.Goyal, S.Verma, B.R.Behera, S.Kumar, U.D.Pramanik, A.K.Sinha, R.Singh

Multinucleon transfer reactions for the 28Si+90, 94Zr systems in the region below and near the Coulomb barrier

NUCLEAR REACTIONS 90,94Zr(28Si, X), E=83.3, 86.4, 89.5, 92.5, 95.5 MeV; measured fragment spectra, time of flight, correlation spectrum between time of flight and position of recoiling particles, mass spectrum for 90,91,92,93,94Zr and 95Nb, transfer probability for 1n, 2n, 3n, 4n and 1p channels, excitation energy distributions of projectile like particles of 27Al, 28,29,30,31,32Si. Evidence of odd-even staggering in the extracted transfer probabilities implies the role of pairing correlation in multinucleon transfer reactions. Comparison with GRAZING calculations.

doi: 10.1103/PhysRevC.83.054607
Citations: PlumX Metrics

2011KA46      J.Phys.:Conf.Ser. 312, 082027 (2011)

S.Kalkal, S.Mandal, N.Madhavan, A.Jhingan, E.Prasad, R.Sandal, J.Gehlot, S.Verma, R.Garg, S.Goyal, M.Saxena, S.Nath, B.Behera, S.Kumar, U.D.Pramanik, D.Siwal, G.Mohanto, H.J.Wollersheim, A.K.Sinha, R.Singh

Fusion and transfer reactions around the Coulomb barrier for 28Si+90, 94Zr systems

NUCLEAR REACTIONS 90,92,94Zr(28Si, X), E=82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 103, 107, 110, 115, 120 MeV; measured reaction products; deduced fusion σ; calculated fusion σ using CCFULL.

doi: 10.1088/1742-6596/312/4/082027
Citations: PlumX Metrics

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
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6117.

2010KA08      Phys.Rev. C 81, 044610 (2010)

S.Kalkal, S.Mandal, N.Madhavan, E.Prasad, S.Verma, A.Jhingan, R.Sandal, S.Nath, J.Gehlot, B.R.Behera, M.Saxena, S.Goyal, D.Siwal, R.Garg, U.D.Pramanik, S.Kumar, T.Varughese, K.S.Golda, S.Muralithar, A.K.Sinha, R.Singh

Channel coupling effects on the fusion excitation functions for 28Si+90, 94Zr in sub- and near-barrier regions

NUCLEAR REACTIONS 90Zr(28Si, X), E(cm)=65.7, 67.3, 68.9, 70.4, 72.0, 73.6, 75.2, 76.7, 79.1, 82.2, 84.6, 88.5, 92.4 MeV; 94Zr(28Si, X), E(cm)=63.3, 65.0, 66.6, 68.2, 69.7, 71.3, 72.9, 74.5, 76.1, 77.7, 80.0, 83.2, 85.6, 89.6, 93.5 MeV; measured Eγ, Iγ, (evaporation residues)γ-coin, fusionσ(E). Comparison with coupled-channels calculations using CCFULL computer code.

doi: 10.1103/PhysRevC.81.044610
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6183.

2010NA14      Phys.Rev. C 81, 064601 (2010)

S.Nath, P.V.Madhusudhana Rao, S.Pal, J.Gehlot, E.Prasad, G.Mohanto, S.Kalkal, J.Sadhukhan, P.D.Shidling, K.S.Golda, A.Jhingan, N.Madhavan, S.Muralithar, A.K.Sinha

Evaporation residue excitation function from complete fusion of 19F with 184W

NUCLEAR REACTIONS 184W(19F, X), E=90-130 MeV; measured Eγ, Iγ, (evaporation residues)γ-coin, evaporation residue cross sections using energy and time-of-flight method, excitation functions. Statistical model analysis. Discussed effect of presence of isomeric states in the evaporation residues of odd-A Bi isotopes and 199Bi.

doi: 10.1103/PhysRevC.81.064601
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6139.

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
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6110.

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