NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = K.Kapoor Found 14 matches. 2023SH05 Eur.Phys.J. A 59, 10 (2023) Study of dissipation role in fusion-fission reaction dynamics in mass region A > 190 via fission time NUCLEAR STRUCTURE 216Ra, 197Tl, 210Po, 213Fr; calculated fission times for systems with wide range of fissility using statistical model code JOANNE2. Comparison with available data.
doi: 10.1140/epja/s10050-023-00922-y
2022SH26 Eur.Phys.J. A 58, 83 (2022) S.Sharma, G.F.Grinyer, G.C.Ball, J.R.Leslie, C.E.Svensson, F.A.Ali, C.Andreoiu, N.Bernier, S.S.Bhattacharjee, V.Bildstein, C.Burbadge, R.Caballero-Folch, R.Coleman, A.Diaz Varela, M.R.Dunlop, R.Dunlop, A.B.Garnsworthy, E.Gyabeng Fuakye, G.M.Huber, B.Jigmeddorj, K.Kapoor, A.T.Laffoley, K.G.Leach, J.Long, A.D.MacLean, C.R.Natzke, B.Olaizola, A.J.Radich, N.Saei, J.T.Smallcombe, A.Talebitaher, K.Whitmore, T.Zidar High-precision half-life determination of 14O via direct β counting RADIOACTIVITY 14O(β+) [from Si(p, X), E=480 MeV]; measured decay products, Eβ, Iβ; deduced log ft, T1/2, the new world average based on several measurements. The Isotope Separator and Accelerator (ISAC) facility at TRIUMF.
doi: 10.1140/epja/s10050-022-00730-w
2021RA22 Phys.Rev. C 104, L042801 (2021) J.S.Randhawa, R.Kanungo, J.Refsgaard, P.Mohr, T.Ahn, M.Alcorta, C.Andreoiu, S.S.Bhattacharjee, B.Davids, G.Christian, A.A.Chen, R.Coleman, P.E.Garrett, G.F.Grinyer, E.G.Fuakye, G.Hackman, J.Hollett, R.Jain, K.Kapoor, R.Krucken, A.Laffoley, A.Lennarz, J.Liang, Z.Meisel, B.Nikhil, A.Psaltis, A.Radich, M.Rocchini, N.Saei, M.Saxena, M.Singh, C.Svensson, P.Subramaniam, A.Talebitaher, S.Upadhyayula, C.Waterfield, J.Williams, M.Williams First direct measurement of 59Cu(p, α)56Ni: step towards constraining the Ni-Cu cycle in the cosmos NUCLEAR REACTIONS 1H(59Cu, α)56Ni, E=8.5 MeV/nucleon, [secondary 59Cu beam from Nb(p, X), E=480 MeV at the TRIUMF cyclotron, followed by re-acceleration of 59Cu beam by ISAC-II superconducting LINAC, solid H2 target]; measured protons and α particles, angle-integrated σ using thick single-sided silicon strip detectors and a layer of thick CsI(Tl) detectors; deduced ratio of integrated σ to total σ, exclusive population of the ground state of 56Ni in (p, α). Comparison with Hauser-Feshbach based statistical model calculations; deduced overestimation of (p, α) cross section in this region. Discussed impact on νp process and x-ray bursts (XRBs). Relevance to Ni-Cu cycle in nucleosynthesis, with competing 59Cu(p, α)56Ni and 59Cu(p, γ)60Zn reactions.
doi: 10.1103/PhysRevC.104.L042801
2019KA29 Phys.Rev. C 100, 014620 (2019) K.Kapoor, N.Bansal, C.Sharma, S.Verma, K.Rani, R.Mahajan, B.R.Behera, K.P.Singh, A.Kumar, H.Singh, R.Dubey, N.Saneesh, M.Kumar, A.Yadav, A.Jhingan, P.Sugathan, B.K.Nayak, A.Saxena, H.P.Sharma, S.K.Chamoli Role of viscosity in fusion-fission dynamics via simultaneously measured neutron and α-particle multiplicities NUCLEAR REACTIONS 196Pt(16O, X)212Rn*, E=93, 99, 106 MeV pulsed beam; measured reaction products, particle-identification plot, Eα, Iα, En, In, (fragment)α- and (fragment)n-coin, pre-, and post-scission α and n multiplicity spectra, angular distributions using multiwire proportional counters for fragment detection, CsI(Tl) detectors for α detection, and organic scintillators for neutron detection at 15UD Pelletron facility of IUAC, New Delhi. Comparison with statistical model calculations using JOANNE2 code.
doi: 10.1103/PhysRevC.100.014620
2018KA31 Acta Phys.Pol. B49, 651 (2018) G.Kaur, B.R.Behera, A.Jhingan, R.Dubey, T.Banerjee, M.Thakur, R.Mahajan, P.Sharma, Khushboo, N.Saneesh, A.Yadav, K.Kapoor, N.Kumar, K.Rani, P.Sugathan, N.Rowley Quasi-elastic Scattering in the 48Ti+232Th Reaction NUCLEAR REACTIONS 232Th(48Ti, x), E=220-285 MeV; measured reaction products energy, intensity, angle, mainly projectile-like particles using hybrid telescope array; separated pure QuasiElastic (QE) events; deduced barrier distribution, σ(θ); calculated barrier distribution, σ(θ) using coupled channels with deformation, vibration and rotation.
doi: 10.5506/aphyspolb.49.651
2018MA48 Acta Phys.Pol. B49, 645 (2018) R.Mahajan, B.R.Behera, M.Thakur, G.Kaur, P.Sharma, K.Kapoor, P.Sugathan, A.Jhingan, A.Chatterjee, N.Saneesh, R.Dubey, A.Yadav, N.Kumar, H.Singh, A.Kumar, A.Saxena, S.Pal Fission Dynamics of 192, 202, 206, 210Po Compound Nuclei by Neutron Multiplicity Measurements NUCLEAR REACTIONS 144,154Sm(48Ti, x), E*=72 MeV; measured En, In; deduced neutron yields, double-differential yields, neutron pre and post multiplicities, pre and post temperatures of neutron sources; calculated neutron multiplicities, temperatures using compound nucleus statistical model with the strength of nuclear dissipation as a free parameter. Yields compared with 191Os(18O, x) and 194Pt(12C, x) reactions at 73.5 and 76.7 MeV, respectively, measured earlier; deduced no specific dependence on the (N-Z)/A of the fissioning nuclei, deduced importance of entrance channels.
doi: 10.5506/aphyspolb.49.645
2018MA55 Phys.Rev. C 98, 034601 (2018) R.Mahajan, B.R.Behera, M.Thakur, G.Kaur, P.Sharma, K.Kapoor, A.Kumar, P.Sugathan, A.Jhingan, A.Chatterjee, N.Saneesh, A.Yadav, R.Dubey, N.Kumar, H.Singh, A.Saxena, S.Pal Systematic study of 192, 202, 206, 210Po compound nuclei using neutron multiplicity as a probe NUCLEAR REACTIONS 144Sm(48Ti, X)192Po*, E=260 MeV; 154Sm(48Ti, X)202Po*, E=230 MeV; measured reaction products, time of flight, E(n), I(n), n(fragment)-coin, neutron multiplicity spectra using the NAND array for neutron detection at the 15 UD Pelletron+LINAC facility of IUAC-New Delhi; deduced compound nucleus pre- and post-scission neutron multiplicity and partial fusion σ. 194Pt(12C, X)206Po*, E*=76.7 MeV; 192Os(18O, X)210Po*, E*=73.5 MeV; analyzed compound nucleus pre-scission neutron multiplicity. Comparison with Shell model predictions for 192,202,206,210Po compound nuclei.
doi: 10.1103/PhysRevC.98.034601
2018PA42 Phys.Rev. C 98, 031601 (2018) A.Pal, S.Santra, D.Chattopadhyay, A.Kundu, A.Jhingan, P.Sugathan, N.Saneesh, M.Kumar, N.L.Singh, A.Yadav, C.Yadav, R.Dubey, K.Kapoor, K.Rani, H.Arora, A.C.Visakh, D.Kaur, B.K.Nayak, A.Saxena, S.Kailas, K.-H.Schmidt Mass distributions of fission fragments from nuclei populated by multinucleon transfer or incomplete fusion channels in 6, 7Li + 238U reactions NUCLEAR REACTIONS 238U(6Li, F), (6Li, αF), (6Li, tF), (6Li, dF), (6Li, pF), (7Li, F), (7Li, αF), (7Li, tF), (7Li, dF), (7Li, pF)241Pu/242Pu/243Pu/244Pu/240Np/241Np, E=30, 34, 40, 31.4, 41.4 MeV; measured mass and folding angle distributions for inclusive fission and fission fragments in coincidence with α, t, d, and p at IUAC-New Delhi Pelletron accelerator facility; deduced peak/valley ratio for inclusive and breakup/transfer-fission. Comparison with previous experimental data, and with predictions of GEF code. Discussed shell correction parameter for symmetric fragments.
doi: 10.1103/PhysRevC.98.031601
2018TH03 Phys.Rev. C 98, 014606 (2018) M.Thakur, B.R.Behera, R.Mahajan, G.Kaur, P.Sharma, K.Kapoor, K.Rani, P.Sugathan, A.Jhingan, N.Saneesh, R.Dubey, A.Yadav, A.Chatterjee, M.B.Chatterjee, N.Kumar, S.Mandal, S.K.Duggi, A.Saxena, S.Kailas, S.Pal Measurement of mass-gated neutron multiplicity for the 48Ti + 208Pb reaction at 57.4 MeV excitation energy NUCLEAR REACTIONS 208Pb(48Ti, F)256Rf*, E=275 MeV; measured fission products, neutrons, (particle)n-coin, angular distributions, double differential neutron multiplicity spectra using position-sensitive multiwire proportional counters (MWPC) for particles and NAND array for neutrons at the 15UD Pelletron-LINAC facility of IUAC-New Delhi; deduced scatter plot of mass and total kinetic energy (TKE) of fission fragments, neutron multiplicity and temperature values, prescission neutron multiplicity. Quasifission (QF) processes investigated through analyses of angular distributions, mass distributions (MD), mass-energy distributions (MED), and mass-angle distributions (MAD) of the fission fragments. Comparison with statistical model calculations.
doi: 10.1103/PhysRevC.98.014606
2018TH04 Acta Phys.Pol. B49, 631 (2018) M.Thakur, B.R.Behera, R.Mahajan, N.Saneesh, G.Kaur, P.Sharma, R.Dubey, K.Kapoor, A.Yadav, N.Kumar, S.Kumar, K.Rani, P.Sugathan, A.Jhingan, A.Chatterjee, M.B.Chatterjee, S.Mandal, A.Saxena, S.Pal, S.Kailas Fission Dynamics Studies of Near Super-heavy Compound Nucleus 256Rf NUCLEAR REACTIONS 208Pb(48Ti, f), E*=57.4 MeV; measured neutron multiplicity; deduced neutron energy spectra corrected for efficiency of the neutron detectors calculated using statistical code FLUKA at a threshold of 120 keV, spectra come from compound nucleus (pre-scission), fission fragment F1 and the complementary fission fragment F2 (post-scission); calculated double-differential neutron multiplicity spectra and their mechanisms contribution at E=273.1 MeV; fitted to the data; calculated variation of neutron pre-scission multiplicity Mpren vs E*; deduced the value of τdelay=33 x 1021 from the fit to data of 232Th(19F, f) reaction.
doi: 10.5506/aphyspolb.49.631
2017KA03 Phys.Lett. B 765, 317 (2017); Erratum Phys.Lett. B 766, 362 (2017) J.Kaur, N.Bansal, A.K.Bhati, R.Kumar, Vijay R.Sharma, K.Kapoor, V.Kumar, N.Kaur g-factor and quadrupole moment of the 21-/2 isomeric state in 131La: Signature for a weakly-deformed magnetic rotational band head NUCLEAR REACTIONS 116Cd(19F, 4nγ)131La, E=75 MeV; measured reaction products, Eγ, Iγ; deduced g -factor and the static quadrupole moment of a magnetic rotational band head, T1/2. Comparison with theoretical calculations.
doi: 10.1016/j.physletb.2016.12.012
2017KA58 Phys.Rev. C 96, 054605 (2017) K.Kapoor, S.Verma, P.Sharma, R.Mahajan, N.Kaur, G.Kaur, B.R.Behera, K.P.Singh, A.Kumar, H.Singh, R.Dubey, N.Saneesh, A.Jhingan, P.Sugathan, G.Mohanto, B.K.Nayak, A.Saxena, H.P.Sharma, S.K.Chamoli, I.Mukul, V.Singh Fission time scale from pre-scission neutron and α multiplicities in the 16O + 194Pt reaction NUCLEAR REACTIONS 194Pt(16O, X)210Rn*, E=98.4 MeV; measured Eα, Iα, fission fragments, (fragments)α-coin, angular distributions using multiwire proportional counters (MWPC) for detection of fission fragments, and an array of CsI detectors for α particles at 15UD Pelletron facility of IUAC-New Delhi; deduced particle identification plot, fission fragments mass ratio distribution, normalized α-particle multiplicity spectra, dissipation energy and dinucleus elongation as function of time and angular momentum, transient times and saddle to scission times. Comparison with statistical model calculations using JOANNE2 code.
doi: 10.1103/PhysRevC.96.054605
2017SH33 Phys.Rev. C 96, 034613 (2017) P.Sharma, B.R.Behera, R.Mahajan, M.Thakur, G.Kaur, K.Kapoor, K.Rani, N.Madhavan, S.Nath, J.Gehlot, R.Dubey, I.Mazumdar, S.M.Patel, M.Dhibar, M.M.Hosamani, Khushboo, N.Kumar, A.Shamlath, G.Mohanto, S.Pal Evaporation residue cross-section measurements for 48Ti-induced reactions NUCLEAR REACTIONS 142Nd(48Ti, X), E(cm)=140.43-202.01 MeV; 150Nd, (48Ti, X), E(cm)=142.18-204.61 MeV; 144Sm(48Ti, X), E(cm)=140.83-202.63 MeV; measured yield of evaporation residues (ERs) from two-dimensional time-of-flight and energy loss spectra, and σ(ER) using gas-filled mode of hybrid recoil mass analyzer (HYRA) at 15UD Pelletron+LINAC accelerator facility of IUAC-New Delhi. Comparison with statistical model calculations, using coupled-channel code CCFULL to obtain spin distribution of the compound nucleus.
doi: 10.1103/PhysRevC.96.034613
2017TH04 Eur.Phys.J. A 53, 133 (2017) M.Thakur, B.R.Behera, R.Mahajan, N.Saneesh, G.Kaur, P.Sharma, R.Dubey, K.Kapoor, A.Yadav, N.Kumar, S.Kumar, K.Rani, P.Sugathan, A.Jhingan, A.Chatterjee, M.B.Chatterjee, S.Mandal, A.Saxena, S.Pal, S.Kailas, A.Nasirov, B.Kayumov Binary fragmentation based studies for the near super-heavy compound nucleus 256Rf NUCLEAR REACTIONS 208Pb(48Ti, x), E=275 MeV; measured fission fragments using MWPCs; deduced intermediate mass fragments mass distribution, TKE; calculated QF (QuasiFission), FF (Fast Fission), DNS (Double Nuclear System) yields separately, especially close to near superheavy 256Rf. Compared to data.
doi: 10.1140/epja/i2017-12323-5
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