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Search: Author = S.Chopra

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2023CH39      Phys.Rev. C 108, L021601 (2023)

S.Chopra, P.O.Hess, M.K.Sharma

Conspicuous role of the neck-length parameter for future superheavy element discoveries

NUCLEAR REACTIONS ⁹³Nb(¹²C, X)¹⁰⁵Ag, E^*=40.959, 54.067 MeV;¹⁷²Yb(⁴⁸Ca, X)²²⁰Th, E^*=35.4 MeV;²³⁵U(¹¹B, X)²⁴⁶Bk, E^*=35-58 MeV; calculated neck-length parameter for different decay channels. Calculations within within the framework of the dynamical cluster-decay model (DCM).

doi: 10.1103/PhysRevC.108.L021601
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2023KU02      Phys.Rev. C 107, 014610 (2023)

N.Kumari, A.Deep, S.Chopra, R.Kharab

Systematic analysis of the decay of ^{287, 288, 290, 292}Fl^* formed in the complete fusion reactions ^{239, 240, 242, 244}Pu + ⁴⁸Ca including Skyrme forces

NUCLEAR REACTIONS ²⁴⁴Pu(⁴⁸Ca, X)²⁹²Fl^*, E=46.9^*; calculated scattering potential for hot fusion at fixed temperature, mass fragmentation potential, preformation yields. ²³⁹Pu(⁴⁸Ca, X)²⁸⁷Fl^*,240Pu(⁴⁸Ca, X)²⁸⁸Fl^*,242Pu(⁴⁸Ca, X)²⁹⁰Fl^*,244Pu(⁴⁸Ca, X)²⁹²Fl^*, E=32.5-52.6 MeV; calculated σ (excitation functions) of 1n, 2n, 3n, 4n, 5n channels from compound nuclei ^{287,288,290,292}Fl^*. Quantum mechanical fragmentation theory (QMFT) based dynamical cluster-decay model (DCM) calculations using SLy4, SkM^* and KDE0(v1) Skyrme interactions. Comparison with available experimental data.

doi: 10.1103/PhysRevC.107.014610
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2022CH03      Phys.Rev. C 105, 014610 (2022)

S.Chopra, M.K.Sharma, P.O.Hess, J.Bedi

Possibility to form Z=120 via the ⁶⁴Ni + ²³⁸U reaction using the dynamical cluster-decay model

NUCLEAR REACTIONS ²³⁸U(⁶⁴Ni, X)³⁰²120^*, E(cm)=260-300 MeV; calculated mass fragmentation potential, evaporation residues (ERs) σ(E), fission and quasifission σ(E), preformation probability as a function of fragment mass number. ²⁴⁸Cm(⁵⁴Cr, X)³⁰²120^*, E^*=39.7 MeV; calculated preformation probability as a function of fragment mass number. Dynamical cluster-decay model (DCM). Comparison with available experimental data.

doi: 10.1103/PhysRevC.105.014610
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2022CH43      Phys.Rev. C 106, L031601 (2022)

S.Chopra, N.Goel, M.K.Sharma, P.O.Hess, Hemdeep

Theoretical attempt to predict the cross sections in the case of new superheavy elements

NUCLEAR REACTIONS ²⁴⁸Cm(⁵⁴Cr, X), (⁵⁴Cr, n), (⁵⁴Cr, 2n), (⁵⁴Cr, 3n), (⁵⁴Cr, 4n), ²⁴⁵Cm(⁴⁸Ca, X), (⁴⁸Ca, n), (⁴⁸Ca, 2n), (⁴⁸Ca, 3n), (⁴⁸Ca, 4n), ²⁴⁹Cf(⁴⁸Ca, X), (⁴⁸Ca, n), (⁴⁸Ca, 2n), (⁴⁸Ca, 3n), (⁴⁸Ca, 4n), E(cm)=33, 193.561 MeV; calculated σ, survival probability for ²⁹⁷Og, ²⁹³Lv compound nucleus. Dynamical cluster-decay model (DCM) calculations. Comparison to available experimental data.

doi: 10.1103/PhysRevC.106.L031601
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2022NI05      Physics of Part.and Nuclei 53, 441 (2022)

Niyti, A.Deep, R.Kharab, R.Singh, S.Chopra

Study of Decay Properties of ²⁶⁰Sg^* Nucleus Formed in ⁵²Cr + ²⁰⁸Pb Reaction by Using GSkI Skyrme Force

NUCLEAR REACTIONS ²⁰⁸Pb(⁵²Cr, X)²⁶⁰Sg, E=13.3, 18.6 MeV; analyzed available data; deduced σ using the Dynamical Cluster-decay Model (DCM).

doi: 10.1134/S1063779622020642
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2021CH28      Phys.Rev. C 103, 064615 (2021)

S.Chopra, M.K.Sharma, P.O.Hess, Hemdeep, NeetuMaan

Impact of noncoplanar degrees of freedom on quasifission contributions with the estimation of unobserved decay channels for the study of ¹⁹⁶Pt^* using the dynamical cluster-decay model

NUCLEAR REACTIONS ¹³²Sn(⁶⁴Ni, X)¹⁹⁶Pt^*, E(cm)=165.5, 167.2, 171, 175.2, 183.7, 195.2 MeV; calculated l-dependent scattering potential for ¹⁹⁵Pt+1n in the decay of ¹⁹⁶Pt^* for 167.2 MeV, evaporation residues (ERs) and fusion-fission cross sections, mass fragmentation potential and preformation probability at 195.2 MeV using dynamical cluster-decay model (DCM). Comparison with available experimental data.

doi: 10.1103/PhysRevC.103.064615
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2020DE33      Phys.Rev. C 102, 034607 (2020)

A.Deep, Niyti, R.Kharab, R.Singh, S.Chopra

Examining the entrance channel effects on the synthesis of the double deformed nucleus ²⁷⁰Hs: A theoretical study using the dynamical cluster-decay model including Skyrme forces

NUCLEAR REACTIONS ²⁶Mg(²⁴⁸Cm, xn)²⁷⁴Hs^*,36S(²³⁸U, xn)²⁷⁴Hs^*,48Ca(²²⁶Ra, xn)²⁷⁴Hs^*, E^*=40-51 MeV; calculated fusion evaporation residue cross sections for 3n-, 4n- and 5n-channels, mass fragmentation potentials, preformation yields, excitation function of individual 3n- to 5n-evaporation channels, best-fitted neck-length parameter using dynamical cluster-decay model (DCM), with Skyrme energy density functionals. Comparison with experimental data. Relevance to super-heavy nuclei.

doi: 10.1103/PhysRevC.102.034607
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2019CH48      Int.J.Mod.Phys. E28, 1950068 (2019)

S.Chopra, H.Kaur, A.Kundra

Study on the compound nucleus fusion probability P_CN in ¹²C +⁹³Nb reaction at above barrier energies using different degrees-of-freedom

NUCLEAR REACTIONS ⁹³Nb(¹²C, X)¹⁰⁵Ag, E(cm)<70 MeV; calculated σ, compound nucleus fusion probability.

doi: 10.1142/S021830131950068X
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2019DE31      Int.J.Mod.Phys. E28, 1950079 (2019)

A.Deep, Niyti, R.Kharab, R.Singh, S.Chopra

Skyrme forces and isotopic dependence of evaporation residue cross-section in the decay of ^{252, 254-256}No^* formed in ^{204, 206, 207, 208}Pb ⁴⁸Ca reactions

NUCLEAR REACTIONS ^{204,206,207,208}Pb(⁴⁸Ca, X)^{252,254,255,256}No, E=20-45 MeV; analyzed available data; calculated preformation yields and probabilities, σ.

RADIOACTIVITY ^{252,254,255,256}No(n), (2n), (3n), (4n); analyzed available data; deduced fusion evaporation residue σ for he decay of compound nuclei using the Skyrme energy density functional (SEDF)-based on semi-classical extended Thomas Fermi (ETF) approach under frozen density approximation.

doi: 10.1142/S0218301319500794
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2018CH53      Phys.Rev. C 98, 041603 (2018)

S.Chopra, Hemdeep, P.Kaushal, R.K.Gupta

Signatures of higher-multipole deformations and non-coplanarity as essential, additional degrees-of-freedom in heavy-ion reactions

NUCLEAR REACTIONS ⁶⁴Ni(¹³²Sn, X)¹⁹⁶Pt^*, E^*=55-90 MeV; ⁹³Nb(¹²C, X)¹⁰⁵Ag^*, E^*=40-60 MeV; ¹⁰⁰Mo(⁶⁴Ni, X)¹⁶⁴Yb^*, E^*=25-70 MeV; ²³⁵U(¹¹B, X)²⁴⁶Bk^*, E^*=47.5-72.5 MeV; ¹⁷²Yb(⁴⁸Ca, X)²²⁰Th^*, E^*=35-45 MeV; ¹⁵⁴Gd(⁴⁸Ca, X)²⁰²Po^*, E^*=41-54 MeV; ¹⁸⁰Hf(⁴⁰Ar, X)²²⁰Th^*, E^*=36-46 MeV; ¹³⁸Ba(⁸²Se, X)²²⁰Th^*, E^*=35-45 MeV; ²³²Th(¹⁴N, X)²⁴⁶Bk^*, E^*=43-61 MeV; calculated compound and non-compound nucleus σ(E) for three deformations β₂, β₃ and β₄ and non-coplanarity using dynamical cluster-decay model. Comparison with experimental values; deduced that higher-multipole deformations together with non-coplanar configurations are important for analysis of a compound nucleus fusion reaction.

doi: 10.1103/PhysRevC.98.041603
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2018HE10      Phys.Rev. C 97, 044623 (2018)

Hemdeep, S.Chopra, A.Kaur, P.Kaushal, R.K.Gupta

Role of higher-multipole deformations and noncoplanarity in the decay of the compound nucleus ²²⁰Th^* within the dynamical cluster-decay model

NUCLEAR REACTIONS ¹⁸⁰Hf(⁴⁰Ar, X)²²⁰Th*, E=35.637.41.37, 46.73 MeV; ¹⁷²Yb(⁴⁸Ca, X)²²⁰Th*, E=35.4, 39.9, 46.2 MeV; ¹³⁸Ba(⁸²Se, X)²²⁰Th*, E=34.47, 39.47, 44.47 MeV; ²⁰⁴Pb(¹⁶O, X)²²⁰Th*, E=39-46.75 MeV; calculated fragmentation potential V(A), preformation yields, σ for 1n to 5n decay channels, and best-fitted neck-length parameter of compound nucleus (CN) ²²⁰Th; deduced role of octupole (β₃) and hexadecupole (β₄) deformations with corresponding compact orientations for both coplanar and noncoplanar configurations in decay of ²²⁰Th compound nucleus. Dynamical cluster-decay model (DCM) based on the quantum mechanical fragmentation theory (QMFT). Comparison with experimental values.

doi: 10.1103/PhysRevC.97.044623
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2018KA28      Phys.Rev. C 98, 014602 (2018)

P.Kaushal, A.Kaur, Hemdeep, S.Chopra, R.K.Gupta

⁴⁸Ca-induced reaction on the lanthanide target ¹⁵⁴Gd and its decay to ground and metastable states within the dynamical cluster-decay model

NUCLEAR REACTIONS ¹⁵⁴Gd(⁴⁸Ca, xn)²⁰²Po^*, E^*=41.03-53.61 MeV; calculated scattering and fragmentation potentials, preformation and penetration probabilities, σ(E) for 1n to 5n channels, and for evaporation residues. ^{197m,198,199m}Po; investigated decay of ²⁰²Po compound nucleus to ¹⁹⁸Po g.s. and to ^197,199Po metastable states by neutron evaporation channels. Quantum mechanical fragmentation theory (QMFT) based dynamical cluster-decay model (DCM). Comparison with available experimental data, and with other theoretical predictions.

doi: 10.1103/PhysRevC.98.014602
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2018NI10      Acta Phys.Pol. B49, 639 (2018)

Niyti, R.Singh, A.Deep, R.Kharab, S.Chopra, R.K.Gupta

Dynamical Cluster-decay Model Based on Skyrme Force KDE0(v1) and the Dynamics of^{208, 206, 204}Pb+⁴⁸Ca → ^{256, 254, 252}No^* Reaction

NUCLEAR REACTIONS ^204,206,208Pb(⁴⁸Ca, xn)^252,254,256No, E^*=19.6-43.6 MeV; calculated channel cross section σ_xn for fixed x (x=1-4, but most of calculations done for 2n emission) vs E^*; compared with available published data; calculated "optimum hot" fusion reactions σ using Dynamical Cluster-decay Model (DCM) with pocket formula for the proximity potential; deduced that they reproduce data well with neck-length parameter fitted.

doi: 10.5506/aphyspolb.49.639
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2017CH21      Phys.Rev. C 95, 044603 (2017)

S.Chopra, Hemdeep, R.K.Gupta

Synthesis of the Z=122 superheavy nucleus via ⁵⁸Fe- and ⁶⁴Ni-induced reactions using the dynamical cluster-decay model

NUCLEAR REACTIONS ²⁴⁸Cm(⁵⁸Fe, xn)³⁰⁶122*, E*=25-68 MeV; ²⁴²Pu(⁶⁴Ni, xn)³⁰⁶122*, E*=25-68 MeV; calculated σ(E*) for 1n-, 2n-, 3n- and 4n-channels, evaporation residue (ER) σ, compound nucleus formation probability, fragmentation potentials, preformation probabilities as function of fragment mass in hot fusion reactions. Dynamical cluster-decay model based on dynamical or quantum mechanical fragmentation theory (QMFT), and two-center shell model (TCSM).

doi: 10.1103/PhysRevC.95.044603
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2017HE03      Phys.Rev. C 95, 014609 (2017)

Hemdeep, S.Chopra, A.Kaur, R.K.Gupta

Formation and decay of the compound nucleus ²²⁰Th^* within the dynamical cluster-decay model

NUCLEAR REACTIONS ¹⁷²Yb(⁴⁸Ca, X)²²⁰Th*, ²⁰⁴Pb(¹⁶O, X)²²⁰Th*, ¹⁹⁴Pt(²⁶Mg, X)²²⁰Th*, ¹⁸⁰Hf(⁴⁰Ar, X)²²⁰Th*, ¹³⁸Ba(⁸²Se, X)²²⁰Th*, ¹³⁴Xe(⁸⁶Kr, X)²²⁰Th*, ¹²⁴Sn(⁹⁶Zr, X)²²⁰Th, E*=39.9, 25-50 MeV; calculated scattering and mass-fragmentation potentials, preformation yields for hot-fusion reactions, evaporation residue, and 1n- to 5n-decay channel cross sections, penetrability versus angular momentum. Dynamical cluster-decay model (DCM) based on quantum-mechanical fragmentation theory (QMFT). Comparison with available experimental data.

doi: 10.1103/PhysRevC.95.014609
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2017NI04      Phys.Rev. C 95, 034602 (2017)

Niyti, A.Deep, R.Kharab, S.Chopra, R.K.Gupta

Skyrme forces and decay of the²⁶⁶₁₀₄Rf^* nucleus synthesized via different incoming channels

NUCLEAR REACTIONS ²⁴⁸Cm(¹⁸O, X)²⁶⁶Rf*, E=88.2-101.3 MeV; ²⁴⁴Pu(²²Ne, X)²⁶⁶Rf*, E=109.0-124.8 MeV; calculated mass fragmentation potentials, preformation yields. ²⁴⁸Cm(¹⁸O, 4n), (¹⁸O, 5n), (¹⁸O, 6n), ²⁴⁴Pu(²²Ne, 4n), ²⁴⁴Pu(²²Ne, 5n)²⁴⁴Pu(²²Ne, 6n), E=80-130 MeV; calculated σ(E), neck-length parameters, preformation and penetration probabilities. ²⁵⁸Md(⁸Li, X), ²⁵⁴Es(¹²B, X), ²⁴²Pu(²²Ne, X), ²¹⁸Po(⁴⁸Ca, X), ²¹²Pb(⁵⁴Ti, X), ²⁰⁵Au(⁶¹Mn, X), ²⁴²Pu(²²Ne, X), ¹⁹⁵Os(⁷¹Ni, X), ¹⁹²W(⁷⁴Zn, X), ¹⁸²Yb(⁸⁴Se, X), ¹⁵⁷Nd(¹⁰⁹Ru, X), ¹³²Te(¹³⁴Te, X), E=94.8 MeV; calculated evaporation residue σ for 4n-, 5n-, and 6n-decay channels of compound nucleus ²⁶⁶Rf in the dynamical cluster-decay model (DCM). Skyrme energy density functional (SEDF) based on semiclassical extended Thomas Fermi (ETF) approach, and using SIII, SIV, new GSkI and KDE0(v1) forces.

doi: 10.1103/PhysRevC.95.034602
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2016CH07      Phys.Rev. C 93, 024603 (2016)

S.Chopra, Hemdeep, A.Kaur, R.K.Gupta

Non-coplanar compact configurations of nuclei and non-compound-nucleus contribution in the fusion cross section of the ¹²C + ⁹³Nb reaction

NUCLEAR REACTIONS ⁹³Nb(¹²C, X)¹⁰⁵Ag*, E(cm)=41.097, 47.828, 54.205 MeV; calculated fragmentation potential as function of fragment mass number, preformation probability and penetrability probability as function of angular momentum, σ(E) for evaporation residue (ER) and summed intermediate mass fragments (IMFs) from A=5-13, fusion σ(CN and nCN) for compound and non-compound nuclei; deduced large non-compound-nucleus (nCN) contribution in the measured fusion cross section. Dynamical cluster-decay model (DCM) with various nuclear interaction potentials. Comparison with experimental data.

doi: 10.1103/PhysRevC.93.024603
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2016CH15      Phys.Rev. C 93, 044604 (2016)

S.Chopra, A.Kaur, Hemdeep, R.K.Gupta

Product P_CNP_surv or the "reduced" evaporation residue cross section σ_ER/Σ_fusion for "hot" fusion reactions studied with the dynamical cluster-decay model

NUCLEAR REACTIONS ⁹³Nb(¹²C, X)¹⁰⁵Ag*, E(*)=40.95-54.06 MeV; ⁹²Mo(³²S, X)¹²⁴Ce*, E(*)=46.5 MeV;¹⁰⁰Mo(⁶⁴Ni, X)¹⁶⁴Yb*, E(*)=30.6-66.5 MeV; ¹¹²Sn(⁶⁴Ni, X)¹⁷⁶Pt*, E(*)=22.92-61.42 MeV; ¹¹⁸Sn(⁶⁴Ni, X)¹⁸²Pt*, E(*)=33.215-70.465 MeV; ¹²⁴Sn(⁶⁴Ni, X)¹⁸⁸Pt*, E(*)=44.337-77.487 MeV; ⁶⁴Ni(¹³²Sn, X)¹⁹⁶Pt*, E(*)=54.498-84.2 MeV; ¹⁵⁴Sm(⁴⁸Ca, X)²⁰²Pb*, E(*)=44.5-65.3 MeV; ¹⁹⁴Pt(¹⁹F, X)²¹³Fr*, E(*)=47.397-61.059 MeV; ²⁰⁴Pb(¹¹B, X)²¹⁵Fr*, E(*)=31.21-43.48 MeV; ¹⁹⁷Au(¹⁸O, X)²¹⁵Fr*, E(*)=39.10-56.57 MeV; ¹⁹⁸Pt(¹⁹F, X)²¹⁷Fr*, E(*)=43.479-69.650 MeV; ²³²Th(¹⁴N, X)²⁴⁶Bk*, E(*)=43-60.9 MeV; ²³⁵U(¹¹B, X)²⁴⁶Bk*, E(*)=34.3-55.9 MeV; ²⁴³Am(¹¹B, X)²⁵⁴Fm*, E(*)=42.34-53.822 MeV; ²³⁸U(⁴⁸Ca, X)²⁸⁶Cn*, E(*)=33.1-40.78 MeV; ²⁴⁴Pu(⁴⁸Ca, X)²⁹²Fl*, E(*)=35.51-36.73 MeV; calculated product of fusion probability and survival probability in compound nucleus (CN), σ(ER)/σ(fusion) as function of CN excitation energy. Dynamical cluster-decay model (DCM) for hot fusion reactions using Blocki et al. pocket formula for nuclear proximity potential and the SEDF with SIII and GSkI forces.

doi: 10.1103/PhysRevC.93.044604
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2015CH06      Phys.Rev. C 91, 014602 (2015)

S.Chopra, A.Kaur, R.K.Gupta

Noncompound nucleus decay contribution in the ¹²C + ⁹³Nb reaction using various formulations of nuclear proximity potential

NUCLEAR REACTIONS ⁹³Nb(¹²C, X)¹⁰⁵Ag*, E(cm)=41.097, 47.828, 54.205, 60.05 MeV; calculated fusion σ(E), angular momentum as function of beam energy, mass fragmentation potential as function of fragment mass, penetration and preformation probability as function of angular momentum, fusion evaporation residue σ. Dynamical cluster-decay model (DCM) and extended-Wong model using Skyrme energy density functionals (SEDFs) SIII, SIV, SSk, GSkI, and KDE0(v1). Comparison with experimental data.

doi: 10.1103/PhysRevC.91.014602
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2015CH16      Phys.Rev. C 91, 034613 (2015)

S.Chopra, A.Kaur, R.K.Gupta

Determination of the compound nucleus survival probability P_surv for various "hot" fusion reactions based on the dynamical cluster-decay model

NUCLEAR REACTIONS ⁹³Nb(¹²C, X)¹⁰⁵Ag, E=40.95-54.06 MeV; ⁹²Mo(³²S, X)¹²⁴Ce, E=46.5 MeV; ¹⁰⁰Mo(⁶⁴Ni, X)¹⁶⁴Yb, E=30.6-66.5 MeV; ¹¹²Sn(⁶⁴Ni, X)¹⁷⁶Pt, E=22.92, 61.42 MeV; ¹¹⁸Sn(⁶⁴Ni, X)¹⁸²Pt, E=33.21, 70.46 MeV; ¹²⁴Sn(⁶⁴Ni, X)¹⁸⁸Pt, E=44.34, 77.49 MeV; ⁶⁴Ni(¹³²Sn, X)¹⁹⁶Pt, E=54.50, 84.2 MeV; ¹⁵⁴Sm(⁴⁸Ca, X)²⁰²Pb, E=44.5-65.3 MeV; ¹⁹⁴Pt(¹⁹F, X)²¹³Fr, E=47.40, 61.06 MeV; ¹⁹⁷Au(¹⁸O, X)²¹⁵Fr, E=39.10, 56.57 MeV;²⁰⁴Pb(¹¹B, X)²¹⁵Fr, E=31.21, 43.48 MeV; ¹⁹⁸Pt(¹⁹F, X)²¹⁷Fr, E=43.48, 69.65 MeV; ²³²U(¹⁴N, X)²⁴⁶Bk, E=43, 60.9 MeV; ²³⁵U(¹¹B, X)²⁴⁶Bk, E=34.3, 55.9 MeV; ²³⁸U(⁴⁸Ca, X)²⁸⁶Cn, E=33.1, 40.78 MeV; ⁴⁸Ca(²⁴⁴Pu, X)²⁹²Fl, E=35.51, 36.73 MeV; calculated survival probability as function of excitation energy of the compound nucleus, evaporation residue and fusion-fission σ(E). Dynamical cluster-decay model (DCM). Comparison with available cross section data.

doi: 10.1103/PhysRevC.91.034613
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2015KA21      Phys.Rev. C 91, 064601 (2015)

A.Kaur, S.Chopra, R.K.Gupta

α versus non-α cluster decays of the excited compound nucleus ¹²⁴Ce^* using various formulations of the nuclear proximity potential

NUCLEAR REACTIONS ⁹²Mo(³²S, X)¹²⁴Ce*, E(cm)=111.29 MeV; calculated l_max, neck-length parameters, mass fragmentation potential, interaction potential for ¹¹⁶Xe+⁸Be decay channel of ¹²⁴Ce, relative σ for evaporation residues of 2p, 3p, ^4,5Li, ^6,7,8,9Be and ^10,11,12,13C, pre-formation probability, l-summed fragment preformation probability, penetrability and fusion σ as function of fragment mass; deduced comparison of σ for α decay and non-α decay channels of decay of compound nucleus ¹²⁴Ce. Dynamical cluster-decay model (DCM) extended to interaction potentials SII, SIII, SIV, SKa, SkM, and SLy4, GSkI and KDE0(v1) from Skyrme energy density functional (SEDF). Comparison with experimental data, and with other theoretical calculations.

doi: 10.1103/PhysRevC.91.064601
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2014KA09      Phys.Rev. C 89, 034602 (2014)

A.Kaur, S.Chopra, R.K.Gupta

α-cluster versus non-α-cluster decay of the excited compounds nucleus ¹²⁴Ce using the dynamical cluster-decay model

NUCLEAR REACTIONS ⁹²Mo(³²S, X)¹²⁴Ce*, E=140, 150 MeV; calculated mass and charge fragmentation potentials, σ(channel)/σ(¹²⁰Cs), quasifusion σ, σ as function of decay channel, angular momentum, charge and mass fragmentation potential, neck-length parameter, l-summed fragment preformation probability, and penetrability, decay σ as function of light fragment mass number, effects of α-cluster and non-α-cluster decay of compound nucleus ¹²⁴Ce. Dynamical cluster-decay model (DCM) with effects up to hexadecapole deformation. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.034602
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2014KA16      Acta Phys.Pol. B45, 349 (2014)

A.Kaur, S.Chopra, R.K.Gupta

Relative Population of ⁶Be and ⁸Be Clusters in the Decay of Excited Compound Nucleus ¹²⁴Ce^* Using the Dynamical Cluster-decay Model

RADIOACTIVITY ¹²⁴Ce(SF); calculated mass fragment distribution. Dynamical cluster model, PACE4 calculations.

doi: 10.5506/APhysPolB.45.349
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2014KA41      Phys.Rev. C 90, 024619 (2014)

A.Kaur, S.Chopra, R.K.Gupta

Compound nucleus formation probability P_CN determined within the dynamical cluster-decay model for various "hot" fusion reactions

NUCLEAR REACTIONS ¹⁰⁰Mo(⁶⁴Ni, X)¹⁶⁴Yb*, E(cm)=122.9-158.8 MeV; ¹⁵⁴Sm(⁴⁸Ca, X)²⁰²Pb*, E(cm)=135.5-156.8 MeV; ⁹³Nb(¹²C, X)¹⁰⁵Ag*, E(cm)=41.09-54.21 MeV; ⁹²Mo(³²S, X)¹²⁴Ce*, E(cm)=111.3 MeV; ²³⁸U(⁴⁸Ca, X)²⁸⁶Cn*, E(cm)=187.1-201.3 MeV; ⁴⁸Ca(²⁴⁴Pu, X)²⁹²Fl*, E(cm)=190.8-200.2 MeV; ²³²U(¹⁴N, X)²⁴⁶Bk*, E(cm)=68.5-86.4 MeV; ²³⁵U(¹¹B, X)²⁴⁶Bk*, E(cm)=49-70.6 MeV; ¹¹²Sn(⁶⁴Ni, X)¹⁷⁶Pt*, E(cm)=149.75-188.25 MeV; ¹¹⁸Sn(⁶⁴Ni, X)¹⁸²Pt*, E(cm)=155.8-193.05 MeV; ¹²⁴Sn(⁶⁴Ni, X)¹⁸⁸Pt*, E(cm)=161.85-195.84 MeV; ⁶⁴Ni(¹³²Sn, X)¹⁹⁶Pt*, E(cm)=165.5-195.2 MeV; calculated fusion and formation probability as function of excitation energy of the compound nucleus and target-projectile charge numbers product, variation of fusion probability with fissility parameter. Dynamical cluster-decay model (DCM) for hot fusion reactions.

doi: 10.1103/PhysRevC.90.024619
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2013CH34      Phys.Rev. C 88, 014615 (2013)

S.Chopra, M.Bansal, M.K.Sharma, R.K.Gupta

One-neutron and noncompound-nucleus decay contributions in the ¹²C + ⁹³Nb reaction at energies near and below the fusion barrier

NUCLEAR REACTIONS ⁹³Nb(¹²C, X)¹⁰⁵Ag*, E(cm)=41.1, 47.8, 54.2 MeV; calculated fusion evaporation residue (ER) σ, ER+intermediate mass fragments (IMF) σ, quasi-fission cross sections, l-summed fragment preformation probability. ⁹³Nb(¹²C, X)¹⁰⁵Ag*, E(cm)=40-56 MeV; calculated excitation functions, fusion-fission σ. Dynamical cluster-decay model (DCM) with deformation. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.014615
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2012BA43      Phys.Rev. C 86, 034604 (2012)

M.Bansal, S.Chopra, R.K.Gupta, R.Kumar, M.K.Sharma

Dynamical cluster-decay model using various formulations of a proximity potential for compact non-coplanar nuclei: Application to the ⁶⁴Ni + ¹⁰⁰Mo reaction

NUCLEAR REACTIONS ¹⁰⁰Mo(⁶⁴Ni, X)¹⁶⁴Yb(*), E(cm)=119.5-158.8 MeV; calculated 1n to 4n evaporation σ(E) as function of angular momentum, fusion-evaporation and fusion-fission σ(E), fragment potentials for charge-favored fragments, fragment preformation probability, neck length parameter as function of incident energy. Dynamical cluster-decay model (DCM). Comparison with experimental data, and with CASCADE calculations.

doi: 10.1103/PhysRevC.86.034604
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