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NSR database version of April 27, 2024.

Search: Author = M.Balasubramaniam

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2021KA42      Int.J.Mod.Phys. E30, 2150089 (2021)

C.Karthika, M.Balasubramaniam

Signature of magic numbers in light exotic nuclei

NUCLEAR STRUCTURE ^{14,16,18,20,22,24,26}O, ^{18,20,22,24,26,28,30}Ne, ^{22,24,26,28,30,32,34,36,38,40}Mg, ^{24,26,28,30,32,34,36,38,40,42,44}Si, ^{28,30,32,34,36,38,40,42,44,46,48}S, ^{32,34,36,38,40,42,44,46,48,50,52}Ar, ^{36,38,40,42,44,46,48,50,52,54,56,58,60}Ni, ^{40,42,44,46,48,50,52,54,56,58,60,62,64}Ti; analyzed available data on 2n- and 2p-separation energies, 2⁺ energy levels; deduced magic numbers.

doi: 10.1142/S0218301321500890
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2021KO27      J.Phys.(London) G48, 025102 (2021)

C.Kokila, M.Balasubramaniam

Pre-existence probability for the ternary fission of Cf isotopes

RADIOACTIVITY ^{242,244,246,248,250,252,254,256}Cf(SF); calculated pre-existence probability as a function of fragment mass number, ternary breakup combinations, yields. ⁴He, ^12,14C, ^16,20O, ^20,24Ne, ^48,50Ca, ¹¹⁴Ru, ¹³²Sn, ¹⁴⁰Xe.

doi: 10.1088/1361-6471/abcb5a
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2020KA29      Eur.Phys.J. A 56, 148 (2020)

C.Karthika, M.Balasubramaniam

Scission point model applied to ¹⁸¹Re^* formed in ¹²C + ¹⁶⁹Tm reaction

doi: 10.1140/epja/s10050-020-00158-0
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2020KO04      Phys.Rev. C 101, 014614 (2020)

C.Kokila, M.Balasubramaniam

Effect of channel temperature and mass window in the fission decay of ¹⁸¹Re^*

NUCLEAR REACTIONS ¹⁶⁹Tm(¹²C, X)¹⁸¹Re^*, E=77.18, 83.22, 89.25 MeV; calculated fragmentation potential for the binary breakup of the compound nucleus (CN), preformation probability of all mass asymmetries, charge minimized fragmentation potential for the restricted mass range for the binary breakup of CN, σ for various mass windows of spherical and quadrupole deformed fragments. Dynamical cluster-decay model (DCM) for the decay of hot and rotating compound nuclei. Comparison with experimental data.

doi: 10.1103/PhysRevC.101.014614
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2019KA22      Eur.Phys.J. A 55, 59 (2019)

C.Karthika, M.Balasubramaniam

Scission point model for the mass distribution of ternary fission

RADIOACTIVITY ²³⁶U (SF); calculated available energy of asymmetric ¹³²Sn+¹⁰⁴Mo and symmetric ¹¹⁸Pd+¹¹⁸Pd breakup vs deformation, neutron and proton numbers, available energy for ternary breakup with ⁴He as the third partner abd with ⁴⁸Ca as the third partner, binary and ternary fission yields mass distributions for different scission distances.

doi: 10.1140/epja/i2019-12729-y
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2019KA50      Phys.Rev. C 100, 054611 (2019)

C.Karthika, M.Balasubramaniam

Mirror nuclei of 1n/2n halo systems as 1p/2p emitters

RADIOACTIVITY ¹¹N, ¹⁵F(p); ¹⁴F, ¹⁷Na, ¹⁹Al, ²²P, ²²Si, ²³P, ²⁴S, ²⁴P, ²⁶Cl, ²⁹K(p), (2p); calculated Q values and half-lives using extended Bethe-Weizsacker mass excess formula and from experimental mass excesses, for mirror nuclei of 1n-halo systems: ¹¹Be, ¹⁴B, ¹⁵C, ¹⁷C, ¹⁹C, ²²O, ²³O, ²⁴O, ²⁴F, ²⁶F and ²⁹Ne, respectively. ⁶Be(2p); ⁸C, ¹¹O, ¹²O, ¹⁴Ne, ¹⁷Mg, ¹⁹Si, ²²S, ²³S, ²⁷Ar, ²⁹Ca(p), (2p); calculated Q values and half-lives for mirror nuclei of 2n-halo systems: ⁶He, ⁸He, ¹¹Li, ¹²Be, ¹⁴Be, ¹⁷B, ¹⁹B, ²²C, ²³N, ²⁷F and ²⁹F, respectively. Cluster-core model. Comparison with other theoretical studies.

doi: 10.1103/PhysRevC.100.054611
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2019KO20      Phys.Rev. C 100, 034607 (2019)

C.Kokila, M.Balasubramaniam

Role of channel temperature and mass window in the binary breakup of ²³⁶U^*

NUCLEAR REACTIONS ²³⁵U(n, F), E=thermal; calculated preformation probabilities, fission yields and mass distribution of the compound nucleus ²³⁶U using the dynamical cluster decay model (DCM), by fixing the excitation energy of the compound nucleus, and temperature obtained iteratively to conserve the sum of the fragment excitation energy of the two fragments. Results compared with experimental data taken from ENDF/B-VIII.0 database.

doi: 10.1103/PhysRevC.100.034607
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2019SR02      Eur.Phys.J. A 55, 33 (2019)

I.Sreeja, M.Balasubramaniam

An empirical formula for the half-lives of exotic two-proton emission

RADIOACTIVITY ¹⁶Ne, ¹⁹Mg, ⁴⁵Fe, ⁴⁸Ni, ⁵⁴Zn, ⁶⁷Kr(2p); calculated T_1/2 using Effective Liquid Drop Model (ELDM), results parameterized using linear form in ξ; deduced coefficients of the suggested linear form from the fit of T_1/2 data and ELDM calculations; calculated T_1/2 using newly developed empirical formula.

doi: 10.1140/epja/i2019-12694-5
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2019SR06      Int.J.Mod.Phys. E28, 1950067 (2019)

I.Sreeja, M.Balasubramaniam

A generalized empirical formula for half-lives of alpha-decay fine structure

RADIOACTIVITY ²¹⁰Bi, ^208,214,218At, ^216,218Fr, ^214,222,224Ac, ²²⁸Pa, ²²⁰Fr, ²²⁴Ac, ²²⁸Pa, ²²⁰Fr, ²²⁴Ac, ²²⁸Pa, ²¹⁰Bi, ^208,214At, ²¹²Fr, ^214,224Ac, ²²⁸Pa, ²²⁴Ac, ^211,215,217At, ²²¹Fr, ^215,221Ac, ^217,231Pa, ^235,237Np, ^241,243Am, ^215,217At, ²²¹Fr, ²³¹Pa, ²³⁷Np, ²⁵³Es, ²¹¹Bi, ²³⁵Np, ²⁴³Am, ²²¹Fr, ²¹¹Bi(α); calculated T_1/2. Comparison with available data.

doi: 10.1142/S0218301319500678
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2019VI01      J.Phys.(London) G46, 025103 (2019)

K.R.Vijayaraghavan, V.G.Lakshmi, P.Prema, M.Balasubramaniam

Equatorial, collinear trajectories in the ternary fission of ²⁵²Cf for various third fragments

RADIOACTIVITY ²⁵²Cf(SF); calculated trajectories of fission fragments, the energy distribution and the angular distribution of fission fragments. ¹³²Sn, ¹¹⁶Pd, ⁷⁰Ni, ⁵⁰Ca, ⁴He; deduced restrictions on initial and final angles.

doi: 10.1088/1361-6471/aaf55c
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2018RA23      Eur.Phys.J. A 54, 156 (2018)

N.S.Rajeswari, C.Nivetha, M.Balasubramaniam

Nuclear surface energy coefficients in cluster decay

RADIOACTIVITY A=252-294(Ar), (Ca), (Ti), (Cr), (Fe), (Co), (Ni), (Zn), (Ga), (Ge), (Se); deduced fitted expression for clusters preformation, T_1/2; calculated T_1/2 for isotopes of listed nuclei and for the considered clusters and for α-decay. Compared with other calculations and experimental data.

doi: 10.1140/epja/i2018-12576-4
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2018SE14      Phys.Rev. C 98, 021601 (2018)

M.T.Senthil Kannan, J.Sadhukhan, B.K.Agrawal, M.Balasubramaniam, S.Pal

Dynamical model calculation to reconcile the nuclear fission lifetime from different measurement techniques

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁶O, F)²²⁴Th^*, E^*=37, 97, 187 MeV; ²³⁸U(p, F)²³⁹Np^*, E^*=0-200 MeV; ²³²Th(α, F)²³⁶U^*, E^*=0-200 MeV; ¹⁸¹Ta(¹⁹F, F)²⁰⁰Pb^*, E^*=0-200 MeV; calculated average fission lifetime, average neutron-evaporation time, last neutron-evaporation time, prescission neutron multiplicity of excited compound nucleus. ²³⁸U(⁶⁴Ni, F)³⁰²120^*, E^*=10-80 MeV; calculated average fission lifetime as a function of excitation energy. State-of-the-art model based on the stochastic Langevin equation to investigate full dynamical evolution of an excited compound system from the ground-state configuration up to scission. Comparison with available experimental data.

doi: 10.1103/PhysRevC.98.021601
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2018SR01      Int.J.Mod.Phys. E27, 1850032 (2018)

I.Sreeja, M.Balasubramaniam, R.K.Gupta

Preformation probability of two-proton emitters

RADIOACTIVITY ¹⁹Mg, ³⁰Ar, ³⁴Ca, ⁴⁵Fe, ⁴⁸Ni, ⁵⁴Zn, ⁶²Se, ^66,67Kr, ⁷¹Sr(2p); calculated preformation probability distributions.

doi: 10.1142/S0218301318500325
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2018SR03      Eur.Phys.J. A 54, 106 (2018)

I.Sreeja, M.Balasubramaniam

An empirical formula for the half-lives of ground state and isomeric state one proton emission

RADIOACTIVITY I, Pr, Cs, La, Eu, Ho, Tm, Lu, Ta, Re, Ir, Au, Tl, Bi, At(p); calculated T_1/2 for different isotopes, proton Q-value. Compared with other calculations.

doi: 10.1140/epja/i2018-12542-2
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2017KU21      Phys.Rev. C 96, 034623 (2017)

B.Kumar, M.T.Senthil Kannan, M.Balasubramaniam, B.K.Agrawal, S.K.Patra

Relative mass distributions of neutron-rich thermally fissile nuclei within a statistical model

RADIOACTIVITY ^236,250U, ^232,254Th(SF); calculated binary mass distributions and relative fragmentation yields of fission fragments from A=66 to 181 at temperatures T=1-3 MeV using the statistical model, with level density parameters from temperature-dependent relativistic mean field formalism (TRMF) and finite range droplet model (FRDM).

doi: 10.1103/PhysRevC.96.034623
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2017SE11      Phys.Rev. C 95, 064613 (2017)

M.T.Senthil Kannan, B.Kumar, M.Balasubramaniam, B.K.Agrawal, S.K.Patra

Relative fragmentation in ternary systems within the temperature-dependent relativistic mean-field approach

RADIOACTIVITY ²⁵²Cf, ²⁴²Pu, ²³⁶U(SF); calculated relative fragmentation probabilities in ternary fission, level density parameters. Temperature-dependent relativistic mean-field (TRMF) model for ternary fragmentation of heavy nuclei with the level density approach.

doi: 10.1103/PhysRevC.95.064613
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2017SE15      Eur.Phys.J. A 53, 164 (2017)

M.T.Senthil Kannan, M.Balasubramaniam

Charge distribution in the ternary fragmentation of ²⁵²Cf

NUCLEAR STRUCTURE ²⁵²Cf; calculated energy surface, deformation, ternary fission fragment charge distribution at E^*=10, 20, 30, 35 MeV.

doi: 10.1140/epja/i2017-12355-9
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2016BA05      Phys.Rev. C 93, 014601 (2016)

M.Balasubramaniam, K.R.Vijayaraghavan, K.Manimaran

Ternary fission of superheavy elements

RADIOACTIVITY ²⁹⁸Fl, ³⁰⁴120, ³¹⁰126(SF); calculated ternary fragmentation potentials as function of fragment mass number for possible ternary combinations, potential energy surfaces (PES) of proton- and neutron-minimized ternary fission fragments, Q values. Three-cluster model and two minimization procedures.

doi: 10.1103/PhysRevC.93.014601
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2015BA39      Pramana 85, 423 (2015)

M.Balasubramaniam, K.R.Vijayaraghavan, C.Karthikraj

Ternary fission

RADIOACTIVITY ²⁵²Cf, ²³⁶U(SF); calculated potential energy surfaces, ternary fission yields and mass distributions. Three-cluster model, level density approaches.

doi: 10.1007/s12043-015-1057-x
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2015VI01      Phys.Rev. C 91, 044616 (2015)

K.R.Vijayaraghavan, M.Balasubramaniam, W.von Oertzen

True ternary fission

RADIOACTIVITY ²⁵²Cf(SF); calculated ternary fragmentation potential energy surfaces as a function of three charge numbers of the minimized 972 fragment combinations corresponding to a collinear geometry; deduced true ternary fission regions (TEFF), deepest minima for ⁸⁸Se+⁸²Ge+⁸²Ge, ¹⁵²Ce+⁵⁰Ca+⁵⁰Ca, and ¹³²Sn+⁷²Ni+⁴⁸Ca. Three cluster model (TCM).

doi: 10.1103/PhysRevC.91.044616
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2014BA09      Int.J.Mod.Phys. E23, 1450018 (2014)

M.Balasubramaniam, N.S.Rajeswari

An empirical relation for cluster decay preformation probability

RADIOACTIVITY ²²¹Fr, ^{221,222,223,224,226}Ra, ²²⁵Ac(¹⁴C), ²²⁸Th(²⁰O), ²³⁰Th, ²³²U(²⁴Ne), ²³⁰U(²²Ne), ²³⁴U, ²³⁶Pu(²⁸Mg), ²³⁸Pu(³²Si), ²⁴²Cm(³⁴Si); calculated T_1/2. Comparison with experimental data.

doi: 10.1142/S0218301314500189
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2014BA56      Phys.Rev. C 90, 054611 (2014)

M.Balasubramaniam, C.Karthikraj, S.Selvaraj, N.Arunachalam

Ternary-fission mass distribution of ²⁵²Cf A level-density approach

RADIOACTIVITY ²⁵²Cf(SF); calculated level-density parameter and excitation energy as function of fragment mass numbers, ternary fission yields and mass distributions for a fixed ⁴⁸Ca third fragment as function of the other two fragment mass numbers. Level-density approach within the framework of statistical theory.

doi: 10.1103/PhysRevC.90.054611
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2014RA15      Eur.Phys.J. A 50, 105 (2014)

N.S.Rajeswari, M.Balasubramaniam

Exotic decay modes of odd-Z (105-119) superheavy nuclei

RADIOACTIVITY ¹⁰⁵Sb, ¹⁰⁹I, ^112,113Cs, ¹¹⁷La, ¹²¹Pr, ^130,131Eu, ¹³⁵Tb, ^140,141Ho, ^145,146,147Tm, ^150,151,155Lu, ^156,157Ta, ^159,160,161Re, ^{164,165,166,167}Ir, ^170,171Au, ^176,177Tl, ¹⁸⁵Bi(p);Z=105-119(p), (α), (¹²C), (¹³C), (²⁰Ne), (²²Ne), (²⁴Ne), (²⁴Mg), (²⁶Mg), (²⁸Mg), (²⁸Si), (³⁰Si), (³²Si), (³⁴Si), (³⁶Ar), (³⁸Ar), (⁴⁰Ar), (⁴²Ar), (⁴⁴Ar), (⁴⁰Ca), (⁴²Ca), (⁴⁴Ca), (⁴⁶Ca), (⁴⁸Ca); calculated T_1/2 using unified fission model with penetrability from WKB approximation and including deformation. Compared with available data.

doi: 10.1140/epja/i2014-14105-y
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2014VI06      Phys.Rev. C 90, 024601 (2014)

K.R.Vijayaraghavan, M.Balasubramaniam, W.von Oertzen

Collinear versus triangular geometry: A ternary fission study

RADIOACTIVITY ²⁵²Cf(SF); calculated ternary potential energy surfaces (PES) for different positioning of the three fragments from a collinear arrangement to a triangular arrangement as a function of the angle between the fragments of ¹³²Sn+¹¹⁶Pd+⁴He, ¹³²Sn+¹⁰⁶Mo+¹⁴C, and ¹³²Sn+⁷²Ni+⁴⁸Ca. Collinear geometry favored over orthogonal geometry for third fragment.

doi: 10.1103/PhysRevC.90.024601
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2013KA10      Phys.Rev. C 87, 024608 (2013)

C.Karthikraj, M.Balasubramaniam

Decay studies of ⁵⁹Cu^* formed in the ³⁵Cl + ²⁴Mg reaction using the dynamical cluster-decay model

NUCLEAR REACTIONS ³⁵Cl(²⁴Mg, X)⁵⁹Cu*, E=275 MeV; calculated binary fragmentation potentials for A=1-29, preformation probability and factor α, summed cross sections for A=1-29, cross section as function of charge distribution (Z=5-12) of fission fragments and factor α. Dynamical cluster-decay model (DCM). Comparison with experimental data.

doi: 10.1103/PhysRevC.87.024608
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2013RA05      J.Phys.(London) G40, 035104 (2013)

N.S.Rajeswari, M.Balasubramaniam

Nuclear surface energy coefficients in α-decay

RADIOACTIVITY ^{178,180,182,184,186,188,190,192,194,196,198,200,202,204,206,208,210}Pb, ^{188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218}Po, ^{198,200,202,204,206,208,210,212,214,216,218,220,222}Rn, ^{202,204,206,208,210,212,214,216,218,220,222,224,226}Ra, ^{210,212,214,216,218,220,222,224,226,228,230,232}Th, ^{220,222,224,226,228,230,232,234,236,238}U, ^{228,230,232,234,236,238,240,242,244}Pu, ^{240,242,244,246,248,250}Cm, ^{240,242,244,246,248,250,252,254}Cf, ^{246,248,250,252,254,256}Fm, ^{250,252,254,256}No(α); calculated T_1/2. Modified unified fission model approach, comparison with experimental data.

doi: 10.1088/0954-3899/40/3/035104
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2013TH05      Int.J.Mod.Phys. E22, 1330014 (2013)

S.Thakur, R.Kumar, K.R.Vijayaraghavan, M.Balasubramaniam

Alpha accompanied ternary fission of superheavy nuclei

RADIOACTIVITY ^{280,282,284,286,288,290,292,294,296,298,300,302,304,306,308,310}Fl, ^{280,282,284,286,288,290,292,294,296,298,300,302,304,306,308,310}Lv, ^{280,282,284,286,288,290,292,294,296,298,300,302,304,306,308,310}Og, ^{280,282,284,286,288,290,292,294,296,298,300,302,304,306,308,310}120(α), (SF); calculated ternary fission parameters. Comparison with available data.

doi: 10.1142/S0218301313500146
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2012KA23      Phys.Rev. C 86, 014613 (2012)

C.Karthikraj, N.S.Rajeswari, M.Balasubramaniam

Temperature-dependent binding energies in a dynamical cluster-decay model applied to the decay of hot and rotating ⁵⁶Ni^*

NUCLEAR REACTIONS ²⁴Mg(³²S, X)¹H/⁴He/⁸Be/¹²C/¹⁶O/²⁰Ne/²⁴Mg/²⁸Si, E(cm)=51.6, 60.5 MeV; A=12-28; calculated fragmentation potential, preformation probability and penetration probability as a function of angular momentum, σ for light and intermediate mass fragments, average total kinetic energy (TKE) for A=12-28 fragments using dynamical cluster-decay (DCM) model and calculated binding energies. Comparison with experimental data.

NUCLEAR STRUCTURE A=4-12, Z=1-8; A=56, Z=20-31; A=82, Z=30-41; A=116, Z=43-56; calculated ground-state binding energies as a function of temperature using Krappe's and Guet et al. formulae. Comparison with experimental data.

doi: 10.1103/PhysRevC.86.014613
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2012VI01      Eur.Phys.J. A 48, 27 (2012)

K.R.Vijayaraghavan, W.von Oertzen, M.Balasubramaniam

Kinetic energies of cluster fragments in ternary fission of ²⁵²Cf

RADIOACTIVITY ²⁵²Cf(SF); calculated energies, potentials of ternary fission fragments, correlations between fragments. Three heavy fragments.

doi: 10.1140/epja/i2012-12027-4
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2011MA19      Phys.Rev. C 83, 034609 (2011)

K.Manimaran, M.Balasubramaniam

All possible ternary fragmentations of ²⁵²Cf in collinear configuration

RADIOACTIVITY ²⁵²Cf(SF); calculated ternary fragmentation potential, potential barrier height, scattering potential, penetration probability and relative yield of fragment masses and ternary fission fragments using three cluster model with ^48,50Ca, ⁵⁴Ti, ⁶⁰Cr, ⁸²Ge treated as the third fragment in collinear emission of all possible ternary fragments. Comparison with experimental data.

doi: 10.1103/PhysRevC.83.034609
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2011RA36      Eur.Phys.J. A 47, 126 (2011)

N.S.Rajeswari, K.R.Vijayaraghavan, M.Balasubramaniam

Cluster pre-existence probability

NUCLEAR STRUCTURE ⁵⁶Ni, ¹¹⁶Ba, ²²⁶Ra, ²⁵⁶Fm; calculated cluster pre-existence probability using overlapping part of the interaction potential within WKB. Comparison with Gupta calculations.

doi: 10.1140/epja/i2011-11126-0
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2010MA05      J.Phys.(London) G37, 045104 (2010)

K.Manimaran, M.Balasubramaniam

Deformation and orientation effects in the ternary fragmentation potential of the ⁴He- and ¹⁰Be-accompanied fission of the ²⁵²Cf nucleus

RADIOACTIVITY ²⁵²Cf(SF); calculated ternary fragmentation channels of ⁴He, ¹⁰Be accompanied fission, deformation and orientation degrees of freedom.

doi: 10.1088/0954-3899/37/4/045104
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2010MA67      Eur.Phys.J. A 45, 293 (2010)

K.Manimaran, M.Balasubramaniam

Ternary fission fragmentation of ²⁵²Cf for all possible third fragments

RADIOACTIVITY ²⁵²Cf(SF); calculated ternary fission potential energy, Q-values, yields for different combinations of fission fragments.

doi: 10.1140/epja/i2010-11000-7
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2009MA07      Phys.Rev. C 79, 024610 (2009)

K.Manimaran, M.Balasubramaniam

Three-cluster model for the α-accompanied fission of californium nuclei

RADIOACTIVITY ^{238,240,242,244,246,248,250,252,254,256}Cf(SF); calculated ternary fragmentation potentials and relative yields of clusters in α-accompanied ternary fission using three-cluster model. Comparison with experimental data.

doi: 10.1103/PhysRevC.79.024610
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2009MA44      Int.J.Mod.Phys. E18, 1509 (2009)

K.Manimaran, M.Balasubramaniam

Cluster radioactivity in trans-tin region using semiempirical formula

doi: 10.1142/S0218301309013671
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2006GU05      J.Phys.(London) G32, 345 (2006)

R.K.Gupta, M.Balasubramaniam, R.Kumar, D.Singh, S.K.Arun, W.Greiner

The dynamical cluster-decay model of preformed clusters for a hot rotating ¹¹⁶Ba^* nucleus produced in the low-energy ⁵⁸Ni + ⁵⁸Ni reaction

NUCLEAR REACTIONS ⁵⁸Ni(⁵⁸Ni, X), E(cm)=100-400 MeV; calculated fragment mass distributions, light charged particle and intermediate mass fragment production σ, preformation probability, angular momentum effects. Dynamical cluster-decay model.

doi: 10.1088/0954-3899/32/3/009
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2006GU07      J.Phys.(London) G32, 565 (2006)

R.K.Gupta, M.Balasubramaniam, S.Kumar, S.K.Patra, G.Munzenberg, W.Greiner

Magic numbers in exotic light nuclei near drip lines

NUCLEAR STRUCTURE ^12,14Be, ¹⁸Ne, ²⁹F; calculated cluster configurations potential energies; deduced shell closure features.

doi: 10.1088/0954-3899/32/4/012
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2005BA04      Phys.Rev. C 71, 014603 (2005)

M.Balasubramaniam, N.Arunachalam

Proton and α-radioactivity of spherical proton emitters

RADIOACTIVITY ¹⁰⁵Sb, ^145,147Tm, ^150,151Lu, ^155,156,157Ta, ^160,161Re, ^{164,165,166,167}Ir, ¹⁷¹Au, ¹⁷⁷Tl, ¹⁸⁵Bi(p); calculated proton decay T_1/2 from ground and isomeric states. ¹⁰⁵Sb, ¹⁰⁹I, ^112,113Cs, ¹¹⁷La, ¹³¹Eu, ^140,141Ho, ^145,146,147Tm, ^150,151Lu, ^155,156,157Ta, ^160,161Re, ^{164,165,166,167,169}Ir, ^171,173Au, ¹⁷⁷Tl, ¹⁸⁵Bi(α); calculated α-decay T_1/2. Preformed cluster model, comparisons with data.

doi: 10.1103/PhysRevC.71.014603
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2005GU02      Phys.Rev. C 71, 014601 (2005)

R.K.Gupta, M.Balasubramaniam, R.Kumar, D.Singh, C.Beck, W.Greiner

Dynamical cluster-decay model for hot and rotating light-mass nuclear systems applied to the low-energy ³²S + ²⁴Mg → ⁵⁶Ni^* reaction

NUCLEAR REACTIONS ²⁴Mg(³²S, X), E(cm)=51.6, 60.5 MeV; calculated light particle and intermediate mass fragment yields, evaporation residue σ. Dynamical cluster-decay model.

doi: 10.1103/PhysRevC.71.014601
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2005GU20      J.Phys.(London) G31, 631 (2005)

R.K.Gupta, M.Balasubramaniam, R.Kumar, N.Singh, M.Manhas, W.Greiner

Optimum orientations of deformed nuclei for cold synthesis of superheavy elements and the role of higher multipole deformations

NUCLEAR REACTIONS ²³⁸Pu(⁴⁸Ar, X), ²⁰⁸Pb(⁶²Fe, X), (⁶²Ni, X), ²³⁰Ra(⁵⁶Cr, X), E not given; calculated scattering potentials, barrier heights vs deformation, orientation. Generalized nuclear proximity potential.

NUCLEAR STRUCTURE ²⁸⁶Cn, ²⁷⁰Hs; calculated compound nucleus fragmentation potentials following hot and cold fusion.

doi: 10.1088/0954-3899/31/7/009
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2004BA64      Phys.Rev. C 70, 017301 (2004)

M.Balasubramaniam, S.Kumarasamy, N.Arunachalam, R.K.Gupta

New semiempirical formula for exotic cluster decay

RADIOACTIVITY ²²¹Fr, ^{221,222,223,224,226}Ra, ²²⁵Ac(¹⁴C); ²²⁸Th(²⁰O); ²³⁰U(²²Ne); ²³¹Pa(²³F); ²³⁰Th, ²³¹Pa, ^{232,233,234,235}U(²⁴Ne); ^233,235U(²⁵Ne); ²³⁴U(²⁶Ne); ^234,236U, ^236,238Pu(²⁸Mg); ²³⁶U, ²³⁸Pu(³⁰Mg); ²³⁸Pu(³²Si); ^{177,178,179,180,181,182,183,184,185,186,187}Hg(⁸Be), (¹²C), (¹⁶O); calculated cluster decay T_1/2. Semiempirical formula, comparison with data.

doi: 10.1103/PhysRevC.70.017301
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2004GU11      Nucl.Phys. A738, 479 (2004)

R.K.Gupta, M.Balasubramaniam, R.Kumar, D.Singh, C.Beck

Collective clusterization effects in light heavy ion reactions

NUCLEAR REACTIONS ³²S(²⁴Mg, X), E(cm)=51.6, 60.5 MeV; calculated light particle and intermediate mass fragment production σ; deduced clusterization effects.

doi: 10.1016/j.nuclphysa.2004.04.091
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2003BA98      J.Phys.(London) G29, 2703 (2003)

M.Balasubramaniam, R.Kumar, R.K.Gupta, C.Beck, W.Scheid

Emission of intermediate mass fragments from hot ¹¹⁶Ba^* formed in low-energy ⁵⁸Ni + ⁵⁸Ni reaction

NUCLEAR REACTIONS ⁵⁸Ni(⁵⁸Ni, X), E(cm)=174, 185.5, 197, 315 MeV; calculated light fragments charge distribution, intermediate mass fragment preformation probabilities, cluster decay constants. ⁵⁸Ni(⁵⁸Ni, X)⁹⁹Cd/¹⁰⁰In/¹⁰¹Sn/¹⁰²In, E(cm)=174, 185.5, 197 MeV; calculated production σ. Dynamical cluster-decay model, comparisons with data.

doi: 10.1088/0954-3899/29/12/003
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2003GU08      Phys.Rev. C 68, 014610 (2003); Erratum Phys.Rev. C 68, 039902 (2003)

R.K.Gupta, R.Kumar, N.K.Dhiman, M.Balasubramaniam, W.Scheid, C.Beck

Cluster decay of hot ⁵⁶Ni^* formed in the ³²S + ²⁴Mg reaction

NUCLEAR REACTIONS ²⁴Mg(³²S, X), E(cm)=51.6, 60.5 MeV; calculated fragment yields, kinetic energy spectra. Preformed cluster-decay model.

doi: 10.1103/PhysRevC.68.014610
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2003GU13      Phys.Rev. C 68, 034321 (2003)

R.K.Gupta, S.Dhaulta, R.Kumar, M.Balasubramaniam, G.Munzenberg, W.Scheid

Closed-shell effects from the stability and instability of nuclei against cluster decays in the mass regions 130-158 and 180-198

NUCLEAR STRUCTURE ^{133,134,135,136,137}Nd, ^{144,145,146,147,148,149,150,151,152,153,154,155,156,157,158}Gd, ^{176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194}Hg, ^{192,193,194,195,196,197,198}Pb; calculated α-decay and cluster-decay associated fragmentation potentials, preformation probabilities, T_1/2; deduced shell effects.

doi: 10.1103/PhysRevC.68.034321
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2003KU05      J.Phys.(London) G29, 625 (2003)

S.Kumar, M.Balasubramaniam, R.K.Gupta, G.Munzenberg, W.Scheid

The formation and decay of superheavy nuclei produced in ⁴⁸Ca-induced reactions

NUCLEAR REACTIONS ²³²Th, ²³⁸U, ^242,244Pu, ²⁴⁸Cm(⁴⁸Ca, X), E not given; calculated fragmentation potentials of excited compound nuclei, fragment yields. Quantum mechanical fragmentation theory.

RADIOACTIVITY ²⁶⁹Sg, ²⁷³Hs, ^277,281Ds, ^284,285Cn, ^287,288,298Fl, ²⁹²Lv(α); calculated T_1/2, Qα. Generalized liquid drop model, preformed cluster model, comparison with data.

doi: 10.1088/0954-3899/29/4/303
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2002GU06      Phys.Rev. C65, 024601 (2002)

R.K.Gupta, M.Balasubramaniam, C.Mazzocchi, M.La Commara, W.Scheid

Decay of Excited ¹¹⁶Ba^* Formed in the ⁵⁸Ni + ⁵⁸Ni Reaction via the Emission of Intermediate Mass Fragments

NUCLEAR REACTIONS ⁵⁸Ni(⁵⁸Ni, X), E(cm) ≈ 170-200 MeV; calculated fragments charge and mass distributions, kinetic energy, role of cluster decay process.

doi: 10.1103/PhysRevC.65.024601
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2002GU10      J.Phys.(London) G28, 699 (2002)

R.K.Gupta, S.Kumar, M.Balasubramaniam, G.Munzenberg, W.Scheid

The Cluster-Core Model for the Halo Structure of Light Nuclei at the Drip Lines

NUCLEAR STRUCTURE ^6,8He, ¹¹Li, ^11,12,14Be, ^8,14,17,19B, ^{9,15,17,19,22}C, ^11,12,22N, ^22,23,24O, ^{17,24,26,27,29}F, ^17,18,29Ne, ²⁰Mg, ^26,27P, ³⁷S; calculated neutron and proton separation energies, halo features, potential energy vs cluster mass. Cluster-core model.

doi: 10.1088/0954-3899/28/4/309
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2002GU24      J.Phys.(London) G28, 2875 (2002)

R.K.Gupta, S.Kumar, R.Kumar, M.Balasubramaniam, W.Scheid

Structure effects in the region of superheavy elements via the α-decay chain of ²⁹³118

RADIOACTIVITY ²⁹³Og, ²⁸⁹Lv, ²⁸⁵Fl, ²⁸¹Cn, ²⁷⁷Ds, ²⁷³Hs(α), (¹⁰Be), (¹⁴C), (³⁴Si), (⁴⁸Ca); calculated α-decay and cluster decay T_1/2, Q, preformation and penetration probabilities; deduced shell effects.

doi: 10.1088/0954-3899/28/11/310
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2001GU14      J.Phys.(London) G27, 867 (2001)

R.K.Gupta, M.Balasubramaniam, G.Munzenberg, W.Greiner, W.Scheid

Cold ⁸⁶Kr Valley in Superheavy Z = 104-120 Nuclei

NUCLEAR STRUCTURE ²⁵⁸Rf, ²⁶⁰Sg, ²⁷⁰Hs, ²⁷⁰Ds, ²⁷⁸Cn, ^{284,288,290,294}Fl, ²⁹⁰Lv, ²⁹⁴Og; calculated compound systems potential energies; deduced optimal beam nuclei for superheavy element production.

doi: 10.1088/0954-3899/27/4/311
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2000GU04      J.Phys.(London) G26, L23 (2000)

R.K.Gupta, M.Balasubramaniam, R.K.Puri, W.Scheid

The Halo Structure of Neutron-Drip Line Nuclei: (Neutron) cluster-core model

NUCLEAR STRUCTURE ⁶He, ¹¹Li, ^11,14,17Be, ^14,19B, ^17,19,22C, ²²N, ^22,23O, ^24,26,27,29F, ²⁹Ne; calculated potential energy vs cluster configuration; deduced neutron halo structure features. Cluster-core model.

doi: 10.1088/0954-3899/26/2/102
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2000GU28      J.Phys.(London) G26, 1373 (2000)

R.K.Gupta, D.Bir, M.Balasubramaniam, W.Scheid

Cold Fission Versus Exotic Cluster Decay in ^{234, 236, 238}U Nuclei

RADIOACTIVITY ^234,236,238U(SF); calculated fission fragments mass distributions. Relationship to exotic cluster decay discussed. Quantum mechanical fragmentation theory.

doi: 10.1088/0954-3899/26/9/307
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1999BB03      Phys.Rev. C60, 064316 (1999)

M.Balasubramaniam, R.K.Gupta

Heavy-Ion Emission in Spontaneous Decays of ^{249, 252}Cf Nuclei

RADIOACTIVITY ^249,252Cf(α), (¹⁰Be), (¹⁴C), (²⁰O), (²²O), (³⁰Mg), (³⁴Si), (³⁶Si), (⁴²S), (⁴⁶Ar), (⁴⁸Ca), (⁵⁰Ca); calculated spontaneous cluster preformation probabilities, emission T_1/2. Preformed cluster model.

doi: 10.1103/PhysRevC.60.064316
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