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NSR database version of April 11, 2024.

Search: Author = D.N.Poenaru

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2024GH01      Phys.Rev. C 109, 024611 (2024)

R.A.Gherghescu, H.Stoecker, D.N.Poenaru

Decay of the superheavy nucleus ³¹⁰126

doi: 10.1103/PhysRevC.109.024611
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2022GH07      Phys.Rev. C 106, 034611 (2022)

R.A.Gherghescu, D.N.Poenaru

Fission channels for fragment isotopes from ²⁹⁸Fl with magic nucleon numbers

RADIOACTIVITY ²⁸⁹Fl(SF); calculated macroscopic barriers for Pb-accompanied fission channels, logarithms of the spontaneous fission T_1/2 for Sn- and Pb-isotope channels, penetrability logarithms for the Sn- and Pb-fission channels, inertia tensor coupling components and total mass inertia after contraction. Favored fission channels are determined as ¹⁸²Pb+¹¹⁶Ge, ¹⁸⁶Pb+¹¹²Ge, ¹³⁶Sn+¹⁶²Gd, ¹⁴⁰Sn+¹⁵⁸Gd. Binary macroscopic-microscopic based on the two-center shell model plus dynamics method.

doi: 10.1103/PhysRevC.106.034611
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2022GH08      Phys.Rev. C 106, 034616 (2022)

R.A.Gherghescu, D.N.Poenaru

Fission barriers of superheavy nuclei for emitted fragment isotopes near proton magic numbers

RADIOACTIVITY ²⁹⁸Fl(SF); calculated fission barrier height and position for Pb- and Sn-channels, shell correction to macroscopic and potential barrier evolution against the reduced distance between centers, proton and neutron shell corrections. Deformed two-center shell model (DTCSM) and Strutinsky binary method.

doi: 10.1103/PhysRevC.106.034616
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2021PO05      Int.J.Mod.Phys. E30, 2150016 (2021)

D.N.Poenaru, R.A.Gherghescu

Proton radioactivity of nuclei with atomic numbers Z = 51-91 and mass number 104-211

NUCLEAR STRUCTURE Z=51-91; analyzed available data; calculated proton radioactivity Q-values, T_1/2 using the analytical super-asymmetric fission (ASAF) model; deduced proton and neutron drip lines.

doi: 10.1142/S0218301321500166
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2018PO04      Eur.Phys.J. A 54, 14 (2018)

D.N.Poenaru, H.Stocker, R.A.Gherghescu

Cluster and alpha decay of superheavy nuclei

RADIOACTIVITY ²⁵³Es(⁴⁶Ar); ²⁵²Fm(⁴⁸Ca); ²⁶⁵Rf(⁵⁵Ti); ²⁶⁷Rf(⁶¹Cr); ²⁶⁹Sg(⁶⁴Fe); ²⁷¹Sg(⁶⁵Fe); ²⁷⁸Bh(⁷³Ni); ²⁷³Hs(⁶⁸Ni); ²⁷⁵Hs(⁷⁰Ni); ²⁷⁷Hs(⁷¹Ni); ²⁷⁸Hs(⁷²Ni); ²⁸²Mt(⁷¹Co); ²⁷⁹Ds(⁷¹Ni); ²⁸¹Ds(⁷²Ni); ²⁸²Ds(⁷⁴Ni); ²⁸⁶Rg(⁷⁸Cu); ²⁸¹Cn(⁷⁴Zn); ²⁸²Cn(⁷⁴Zn); ²⁸³Cn(⁷⁶Zn); ²⁸⁴Cn(⁷⁶Zn); ²⁸⁵Cn(⁷⁷Zn); ²⁸⁷Nh(⁷⁹Ga); ²⁹⁰Nh(⁸¹Ga); ²⁸⁴Fl(⁷⁸Ge); ^286,287,288Fl(⁸⁰Ge); ²⁸⁹Fl(⁸¹Ge); ^290,294Fl(⁸²Ge); ^291,292Lv(⁸⁴Se); ²⁹³Lv(⁸⁵Se); ²⁹⁴Og(⁸⁶Kr); ²⁹⁵Og(⁸⁷Kr); ²⁹⁷119(⁸⁹Rb); ²⁹⁹119(⁹¹Rb); ³⁰⁰119(⁹²Rb); ²⁹⁹120(⁹¹Sr); ³⁰⁰120(⁹²Sr); ³⁰¹120(⁹³Sr); ³⁰²120(⁹⁴Sr); calculated cluster decay Q-value using AME16 and W4 models, T_1/2 using ASAF model. ^{297,299,300,302}119(α); calculated possible α-decay chains Q, T_1/2 for each nucleus within the chain. ³⁰⁰120(⁹²Sr);³⁰²120(⁹⁴Sr); calculated possible cluster decay energy, T_1/2, branching relative to α-decay.

doi: 10.1140/epja/i2018-12469-6
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2018PO06      Phys.Rev. C 97, 044621 (2018)

D.N.Poenaru, R.A.Gherghescu

α decay and cluster radioactivity of nuclei of interest to the synthesis of Z=119, 120 isotopes

RADIOACTIVITY ²⁹⁹120(⁹¹Sr); ³⁰⁰120(⁹²Sr); ³⁰¹120(⁹³Sr); ³⁰²120(⁹⁴Sr); calculated Q-value, T_1/2 for cluster decays, branching ratio relative to α-decay using Analytical Super-asymmetric Fission (ASAF), and WS4 models. ^300,302120, ^297,299119(α); calculated Q-value, T_1/2 using Akrawy (AKRA), ASAF, Universal Formula (UNIV), and Semi-empirical formula based on fission theory (semFIS). ^302,300,299120, ^299,297119, ^{298,296,295,294}Og, ^295,293Ts, ^{294,293,292,291,290}Lv, ^291,289Mc, ^{290,289,288,287,286}Fl, ^287,285Nh, ^{286,285,284,283,282}Cn, ^283,281Rg, ^281,279Ds, ^277,275Hs, ²⁷¹Sg, ²⁶⁷Rf(α); calculated kinetic energies, T_1/2 using ASAF and WS4 models. Comparison with other theoretical calculations. Relevance to synthesis of Z=119 and 120 isotopes.

doi: 10.1103/PhysRevC.97.044621
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2018PO12      Europhys.Lett. 124, 52001 (2018)

D.N.Poenaru, R.A.Gherghescu

Alpha decay and cluster radioactivity of super heavy nuclei ^{303, 304}120

RADIOACTIVITY ^303,304120, ^299,300Og, ^295,296Lv, ^291,292Fl, ^287,288Cn, ²⁸⁴Ds(α), ^303,304120(⁹²Sr), (⁹⁴Sr); calculated T_1/2. Comparison with available data.

doi: 10.1209/0295-5075/124/52001
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2017AK04      J.Phys.(London) G44, 105105 (2017)

D.T.Akrawy, D.N.Poenaru

Alpha decay calculations with a new formula

NUCLEAR STRUCTURE A=130, 119, 109, 96, 188, 147, 131, 114, 136, 84, 76, 48; calculated T_1/2 using a new semi-empirical formula.

doi: 10.1088/1361-6471/aa8527
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2017PO09      Europhys.Lett. 118, 22001 (2017)

D.N.Poenaru, R.A.Gherghescu

Cluster preformation at the nuclear surface in cold fission

RADIOACTIVITY ²⁶⁴Sg, ²⁶⁰Rf(SF); calculated deformation energy for symmetrical spontaneous fission, shell and pairing correction energies for symmetrical fission. Macroscopic-microscopic method for deformation energy based on asymmetric two-center shell model.

doi: 10.1209/0295-5075/118/22001
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2016PO05      Phys.Rev. C 94, 014309 (2016)

D.N.Poenaru, R.A.Gherghescu

Spontaneous fission of the superheavy nucleus ²⁸⁶Fl

RADIOACTIVITY ²⁸⁶Fl(SF); calculated half-life, deformation energy, touching point deformation energy using cranking inertia with proton and neutron contributions, and the two-center shell model plus Yukawa-plus-exponential macroscopic energy; deduced fission barriers for ten different combinations of fragments. Investigated four laws of variation of R2=R2(R) for two deformation coordinates, R, the separation distance of the fragments, and R₂, the radius of the light fragment: exponentially decreasing (ED) and linearly decreasing (LD), linearly increasing (LI), and constant value; deduced LI mode as the most advantageous one from the least action trajectory, justifying microscopic assumptions of cluster preformation at the nuclear surface. The touching point deformation energy versus mass asymmetry shows three minima, corresponding to the three decay modes of spontaneous fission, cluster decay, and alpha decay. Fission barriers for ten different combinations of fragments.

doi: 10.1103/PhysRevC.94.014309
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2016PO10      Eur.Phys.J. A 52, 349 (2016)

D.N.Poenaru, R.A.Gherghescu

Light fragment preformation in cold fission of ²⁸²Cn

NUCLEAR STRUCTURE ²⁴⁰Pu, ²⁵²Cf, ²⁸²Cn; calculated potential energy surface, deformation, separation distance, mass asymmetry for different radii of emitted light fission fragment.

doi: 10.1140/epja/i2016-16349-9
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2015GH06      Pramana 85, 439 (2015)

R.A.Gherghescu, D.N.Poenaru

Spontaneous fission of superheavy nuclei

RADIOACTIVITY ^282,292120(SF); calculated fission channels with the lowest T_1/2, deformation energy and penetrability for binary nuclear configurations typical for fission processes. The macroscopic-microscopic method.

doi: 10.1007/s12043-015-1059-8
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2015PO06      Pramana 85, 415 (2015)

D.N.Poenaru, R.A.Gherghescu

Fission approach to cluster radioactivity

RADIOACTIVITY ²⁸⁶Fl(SF); calculated potential energy surfaces, α-decay and cluster decay T_1/2. Comparison with experimental data.

doi: 10.1007/s12043-015-1056-y
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2014PO11      J.Phys.(London) G41, 125104 (2014)

D.N.Poenaru, R.A.Gherghescu

Fission decay of ²⁸²Cn studied using cranking inertia

RADIOACTIVITY ²⁸²Cn(SF); ¹³⁰Pd, ¹³²Sn, ¹³⁴Cd, ¹³⁶Sn, ¹³⁸Te, ¹⁴⁰Xe, ¹⁴¹Ba. calculated potential energy surfaces, deformation energies, inertia tensor, T_1/2.

doi: 10.1088/0954-3899/41/12/125104
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2014SH13      Rom.J.Phys. 59, 515 (2014)

N.S.Shakib, R.A.Gherghescu, D.N.Poenaru, M.M.Firoozabadi, M.F.Rahimi

Fission Paths Influenced by Proton and Neutron Magicity

RADIOACTIVITY ²³⁶U, ²⁴⁴Pu(SF); calculated fission products macroscopic energies, level schemes, shell corrections, barriers. The macroscopic-macroscopic method.

2013GH04      Rom.J.Phys. 58, 1178 (2013)

R.A.Gherghescu, D.N.Poenaru

Shell and Pairing Influence on Sub-Barrier Nuclear Fusion

RADIOACTIVITY ²³⁶Pu(¹¹⁸Ag); calculated shell and pairing corrections for neutrons and protons, and their sum for symmetric splitting.

NUCLEAR STRUCTURE ^290,294Og; calculated total deformation energy, crancking tensor of inertia. Strutinsky and BCS methods.

2013PO06      J.Phys.(London) G40, 105105 (2013)

D.N.Poenaru, R.A.Gherghescu, W.Greiner

Nuclear inertia and the decay modes of superheavy nuclei

RADIOACTIVITY ²⁸⁴Cn(SF); calculated potential barriers. ¹³²Sn, ¹⁵²Sm, ¹³⁰Cd, ¹⁵⁴Gd, ^138,142,146Ba, ¹⁴⁰Ce, ¹⁴⁴Xe;deduced mass and charge asymmetry, fission fragment parameters, T_1/2. Comparison AME 2012 and other data.

doi: 10.1088/0954-3899/40/10/105105
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2013PO07      Rom.J.Phys. 58, 1157 (2013)

D.N.Poenaru, R.A.Gherghescu, W.Greiner

Alpha- Cluster-and Fission Decay of Superheavy Nuclei

NUCLEAR STRUCTURE Z=118-124; calculated T_1/2 for α-cluster decay and fission. Analytical superasymmetric fission model.

2012PO01      J.Phys.(London) G39, 015105 (2012)

D.N.Poenaru, R.A.Gherghescu, W.Greiner

Simple relationships for α-decay half-lives

RADIOACTIVITY ^108,109,110Te, ¹¹²I, ^109,110Xe, ^112,113,114Ba, ^164,165Re, ^173,175Ir, ¹⁶⁹Pt, ¹⁷⁹Au, ¹⁷⁵Hg, ¹⁸⁶Tl, ²⁰³Bi, ¹⁹⁴At, ²²¹Rn, ^203,210Fr, ²²⁸Ac, ²³²Am, ^238,239Cm, ²⁴⁷Es, ^247,249Fm, ^247,251Md, ^251,255,257No, ^{253,254,255,258}Lr, ^257,258Rf, ^{256,257,258,260}Db, ^{260,261,263,265,271}Sg, ^{261,262,266,272}Bh, ^265,267,270Hs, ^270,276,278Mt, ^{267,269,279,281}Ds, ^279,280Rg, ^283,284,285Cn, ^{272,282,283,284,285,286}Nh, ^{286,287,288,289}Fl, ^287,288,289Mc, ^{290,291,292,293}Lv, ^293,294Ts, ^294,295Og(α); calculated T_1/2; deduced universal decay law using α-like R-matrix theory.

doi: 10.1088/0954-3899/39/1/015105
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2012PO04      Rom.J.Phys. 57, 431 (2012)

D.N.Poenaru, R.A.Gherghescu, W.Greiner

Metallic Atomic Clusters

2012PO05      Phys.Rev. C 85, 034615 (2012)

D.N.Poenaru, R.A.Gherghescu, W.Greiner

Cluster decay of superheavy nuclei

NUCLEAR STRUCTURE Z=104-124; calculated half-lives and branching ratios for α decay, and competing cluster decay with spontaneous emission of Be, C, Ar, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Br, Kr, Sr, Y, Zr, Nb, and Mo isotopes. Analytical superasymmetric fission (ASAF) model with Q values from AME-11, and three different theoretical mass calculations. Discussed unexpected dominance of cluster decay over α decay for some of the heaviest superheavy isotopes, and need for better accuracy of calculated masses in the region of heaviest SHE for reliable half-life predictions.

RADIOACTIVITY ^302,303,304122(α), (⁹⁶Zr); ³⁰⁴124(α), (⁹⁵Zr), (⁹⁶Zr), (⁹⁸Mo); ^305,306124(α), (¹⁰⁰Mo); ³⁰⁷124(α), (¹⁰²Mo); calculated Q values, half-lives for α and cluster decay, branching ratios. Analytical superasymmetric fission (ASAF) model with Q values from three different theoretical mass calculations.

doi: 10.1103/PhysRevC.85.034615
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2012PO09      Int.J.Mod.Phys. E21, 1250022 (2012)

D.N.Poenaru, R.A.Gherghescu, W.Greiner

Competition of α decay and heavy particle decay in superheavy nuclei

NUCLEAR STRUCTURE Z=104-126; calculated T_1/2 for heavy cluster emission; deduced large half-lives for Z=124. AME11 mass table.

doi: 10.1142/S021830131250022X
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2011PO02      Phys.Rev. C 83, 014601 (2011)

D.N.Poenaru, R.A.Gherghescu, W.Greiner

Single universal curve for cluster radioactivities and α decay

NUCLEAR STRUCTURE Z=87-96; calculated half-lives of cluster decay modes of 37 heavy nuclei with the emission of ¹⁴C, ²⁰O, ²³F, ^22,24,25,26Ne, ^28,30Mg, ^32,34Si clusters. Z=52-118; calculated half-lives of α decay for 163 even-even nuclei. A new single line of universal curve (UNIV) for alpha decay and cluster radioactivities based on fission theory. Comparison with the universal decay law (UDL) derived using α-like R-matrix theory. Comparison with experimental data.

doi: 10.1103/PhysRevC.83.014601
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2011PO08      Phys.Rev.Lett. 107, 062503 (2011)

D.N.Poenaru, R.A.Gherghescu, W.Greiner

Heavy-Particle Radioactivity of Superheavy Nuclei

RADIOACTIVITY ²²²Ra, ²⁸⁸Fl(¹⁴C), (⁸⁰Ge); calculated T_1/2, spontaneous emission of heavy particles. KTUY05 and FRDM95 mass models.

doi: 10.1103/PhysRevLett.107.062503
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2010PO07      Nucl.Phys. A834, 163c (2010)

D.N.Poenaru, W.Greiner

Extension of superasymmetric fission theory from cluster decay to nanophysics

RADIOACTIVITY Z=87-96(α), (¹⁴C), (²⁰O), (²⁴Ne), (²⁵Ne), (²⁸Mg), (³⁰Mg), (³²Si), (³⁴Si); analyzed T_1/2 for cluster decay. Discussed cluster emission from metallic clusters.

doi: 10.1016/j.nuclphysa.2009.12.029
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2009PO13      J.Phys.(London) G36, 125101 (2009)

D.N.Poenaru, R.A.Gherghescu, W.Greiner

Special properties of ²⁶⁴Fm and of atomic clusters emitting singly charged trimers

NUCLEAR STRUCTURE ²⁶⁴Fm; calculated potential energy surfaces, deformation energies.Comparison with superheavy nucleus ²⁹⁴118.

doi: 10.1088/0954-3899/36/12/125101
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2008GH01      Phys.Rev. C 77, 044607 (2008)

R.A.Gherghescu, D.N.Poenaru, N.Carjan

Neck influence on fission paths

RADIOACTIVITY ²³⁶Pu (SF); calculated potential energy surfaces.

doi: 10.1103/PhysRevC.77.044607
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2008GH03      Phys.Rev. C 78, 024604 (2008)

R.A.Gherghescu, D.N.Poenaru, W.Greiner

Proton gap due to the necking potential

NUCLEAR REACTIONS ¹⁴⁴Nd(⁹²Se, F)E not given; calculated deformation energy, penetrabilities of ¹⁴⁴Nd+⁹²Se fission channel.

doi: 10.1103/PhysRevC.78.024604
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2008GH05      Int.J.Mod.Phys. E17, 2221 (2008)

R.A.Gherghescu, D.N.Poenaru, W.Greiner

Binary and ternary emission from superheavy nuclei

RADIOACTIVITY ^282,288,294120(SF); calculated dynamical barriers for the main and ternary fission channels.

doi: 10.1142/S0218301308011379
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2008PO07      Int.J.Mod.Phys. E17, 2255 (2008)

D.N.Poenaru, W.Greiner

Cluster radioactivities - past, present and future

doi: 10.1142/S0218301308011446
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2007PO03      Europhys.Lett. 77, 62001 (2007)

D.N.Poenaru, R.A.Gherghescu, N.Carjan

Alpha-decay lifetimes semiempirical relationship including shell effects

NUCLEAR STRUCTURE Z=52-118; analyzed α-decay T_1/2; deduced parameters.

doi: 10.1209/0295-5075/77/62001
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2007PO08      Int.J.Mod.Phys. E16, 995 (2007)

D.N.Poenaru, R.A.Gherghescu, I.H.Plonski, W.Greiner

Heavy particle radioactivities

NUCLEAR STRUCTURE ²²⁸Th; calculated potential energy surface for binary decay modes using macroscopic-microscopic model.

doi: 10.1142/S0218301307006459
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2006GH06      J.Phys.(London) G32, L73 (2006)

R.A.Gherghescu, D.N.Poenaru, W.Greiner, Y.Nagame

Synthesis of ²⁸⁶114 and ²⁹⁰114 using low-energy fusion channels

NUCLEAR REACTIONS ¹⁷²Er(¹¹⁴Pd, X), (¹¹⁸Pd, X), ¹⁷⁰Er(¹¹⁶Pd, X), (¹²⁰Pd, X), ¹⁶⁸Er(¹¹⁸Pd, X), (¹²²Pd, X), ¹⁴⁴Ba(¹⁴²Ce, X), ¹⁴⁴Ce(¹⁴²Ba, X), ¹⁴⁶Ce(¹⁴⁰Ba, X), ¹⁴⁸Ce(¹³⁸Ba, X), ¹⁶²Gd(¹²⁴Sn, X), ¹⁶⁰Gd(¹²⁶Sn, X), ¹⁵⁸Gd(¹²⁸Sn, X), ¹⁵⁶Gd(¹³⁰Sn, X), ¹⁵⁶Sm(¹³⁰Te, X), ¹⁵⁴Sm(¹³²Te, X), ¹⁵²Sm(¹³⁴Te, X), ¹⁶⁸Dy(¹¹⁸Cd, X), (¹²²Cd, X), ¹⁶⁶Dy(¹²⁰Cd, X), ¹⁶⁴Dy(¹²²Cd, X), ¹⁵⁰Nd(¹³⁶Xe, X), ¹⁴⁸Nd(¹³⁸Xe, X), ¹⁷⁰Yb(¹²⁰Ru, X), ¹⁷²Yb(¹¹⁸Ru, X), ¹⁷⁴Yb(¹¹⁶Ru, X), ¹⁷⁶Yb(¹¹⁴Ru, X), ¹⁷⁸Yb(¹¹²Ru, X), ¹⁸⁰Yb(¹¹⁰Ru, X), ¹⁷⁴Hf(¹¹⁶Mo, X), ¹⁷⁶Hf(¹¹⁴Mo, X), ¹⁷⁸Hf(¹¹²Mo, X), ¹⁸⁰Hf(¹¹⁰Mo, X), ¹⁸²Hf(¹⁰⁸Mo, X), ¹⁸⁴Hf(¹⁰⁶Mo, X), ¹⁸⁶Hf(¹⁰⁴Mo, X), ¹⁷⁸W(¹¹²Zr, X), ¹⁸²W(¹⁰⁸Zr, X), ¹⁸⁴W(¹⁰⁶Zr, X), ¹⁸⁶W(¹⁰⁴Zr, X), ¹⁸⁸W(¹⁰²Zr, X), ¹⁹⁰W(¹⁰⁰Zr, X), ¹⁸²Os(¹⁰⁸Sr, X), ¹⁸⁶Os(¹⁰⁴Sr, X), ¹⁸⁸Os(¹⁰²Sr, X), ¹⁹⁰Os(¹⁰⁰Sr, X), ¹⁸⁶Pt(¹⁰⁴Kr, X), ¹⁸⁸Pt(¹⁰²Kr, X), ¹⁹⁰Pt(¹⁰⁰Kr, X), E not given; calculated fusion barrier distributions, potential energy. Macroscopic-microscopic approach, dynamic minimization.

doi: 10.1088/0954-3899/32/11/L03
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2006PO02      Phys.Rev. C 73, 014608 (2006)

D.N.Poenaru, R.A.Gherghescu, W.Greiner

Potential energy surfaces for cluster emitting nuclei

RADIOACTIVITY ²²²Ra(¹⁴C); ²³²U(²⁴Ne); ²³⁶Pu(²⁸Mg); ²⁴²Cm(³⁴Si); calculated potential energy surfaces, cluster emission and fission barrier features, shell effects. Asymmetric two-center shell model.

doi: 10.1103/PhysRevC.73.014608
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2006PO08      Phys.Rev. C 74, 014312 (2006)

D.N.Poenaru, I.-H.Plonski, W.Greiner

α-decay half-lives of superheavy nuclei

NUCLEAR STRUCTURE Z=93-118; calculated α-decay T_1/2. Several models compared with data.

doi: 10.1103/PhysRevC.74.014312
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2006PO11      J.Phys.(London) G32, 1223 (2006)

D.N.Poenaru, I.H.Plonski, R.A.Gherghescu, W.Greiner

Valleys due to Pb and Sn on the potential energy surface of superheavy and lighter α-emitting nuclei

NUCLEAR STRUCTURE ¹⁰⁶Te, ²¹²Po, ²⁹⁴Og; calculated potential energy surfaces; deduced shell effects. Two-center shell model. Systematics of α-decay half-lives discussed.

doi: 10.1088/0954-3899/32/9/002
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2005GH05      Phys.Rev. C 72, 027602 (2005)

R.A.Gherghescu, D.N.Poenaru

Werner-Wheeler mass tensor for fusionlike configuration

NUCLEAR REACTIONS ²⁴⁰Pu(⁵⁴Cr, X), E not given; calculated mass tensor components.

doi: 10.1103/PhysRevC.72.027602
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2005GH09      Rom.J.Phys. 50, 377 (2005)

R.A.Gherghescu, D.N.Poenaru, W.Greiner

Deformation effects in two-center shell model

NUCLEAR REACTIONS ¹⁶O(¹⁸Ne, X), (²⁰Ne, X), (²²Ne, X), E not given; calculated shell and deformation effects in fusion reactions. Two-center shell model.

2005PO01      Nucl.Phys. A747, 182 (2005)

D.N.Poenaru, R.A.Gherghescu, W.Greiner

Complex fission phenomena

NUCLEAR STRUCTURE ¹⁷⁰Yb, ^{226,228,230,232,234,236,238}Th, ^{230,232,234,236,238}U, ²⁵²Cf; calculated saddle-point deformation parameters and energies for binary, ternary, and multicluster fission. Integro-differential equation.

doi: 10.1016/j.nuclphysa.2004.09.104
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2005PO11      Eur.Phys.J. A 24, 355 (2005)

D.N.Poenaru, R.A.Gherghescu, W.Greiner

Analytical relationship for the cranking inertia

NUCLEAR STRUCTURE ²⁴⁰Pu; calculated deformation, rotational inertia, pairing gap, Fermi energy. Analytic result, comparison with hydrodynamical model.

doi: 10.1140/epja/i2004-10218-2
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2005PO27      Rom.J.Phys. 50, 187 (2005)

D.N.Poenaru, R.A.Gherghescu, W.Greiner

Microscopic model for the nuclear inertia tensor

NUCLEAR STRUCTURE ¹⁴⁴Nd, ²⁵²Cf; calculated effective mass, shell corrections vs deformation.

2003PO15      Europhys.Lett. 64, 164 (2003)

D.N.Poenaru, W.Greiner

Deformation energy minima at finite mass asymmetry

NUCLEAR STRUCTURE ^{226,228,230,232,234,236,238}Th, ^{230,232,234,236,238}U; calculated saddle point deformation energy vs mass asymmetry. Phenomenological shell corrections.

doi: 10.1209/epl/i2003-00612-8
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2003PO18      Acta Phys.Hung.N.S. 18, 409 (2003)

D.N.Poenaru, R.A.Gherghescu, W.Greiner

Fission into Equally Sized Three Fragments

NUCLEAR STRUCTURE ¹⁷⁰Yb, ²³⁶U, ²⁵²Cf; calculated ternary fission associated equilibrium shapes.

doi: 10.1556/APH.18.2003.2-4.50
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2002PO03      Phys.Rev. C65, 054308 (2002); Erratum Phys.Rev. C66, 049902 (2002)

D.N.Poenaru, Y.Nagame, R.A.Gherghescu, W.Greiner

Systematics of Cluster Decay Modes

NUCLEAR STRUCTURE Z=87-96; analyzed α-decay, cluster decay T_1/2, related data; deduced systematic features.

doi: 10.1103/PhysRevC.65.054308
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2002PO16      J.Nucl.Radiochem.Sci. 3, No 1, 43 (2002)

D.N.Poenaru, W.Greiner, Y.Nagame, R.A.Gherghescu

Nuclear Shapes in Complex Fission Phenomena

NUCLEAR STRUCTURE ²³⁸U, ^228,232Th; calculated fission associated deformations, saddle-point deformation energies.

2001HA67      Acta Phys.Hung.N.S. 14, 161 (2001)

J.H.Hamilton, A.V.Ramayya, J.K.Hwang, G.M.Ter-Akopian, A.V.Daniel, T.N.Ginter, C.J.Beyer, J.Kormicki, X.Q.Zhang, A.M.Rodin, A.S.Fomichev, J.Kliman, L.Krupa, M.Jandel, Yu.Ts.Oganessian, W.Greiner, D.N.Poenaru, G.Chubaryan, D.Seweryniak, R.V.F.Janssens, J.O.Rasmussen, S.-C.Wu, R.Donangelo, W.C.Ma, R.B.Piercey, J.D.Cole

Behavior of Nuclear Matter under Extreme Conditions in Fission

RADIOACTIVITY ²⁵²Cf(SF); measured Eγ, Iγ, γγ-, (charged particle)γ-coin; deduced neutron multiplicity, fission fragments isotopic yields, long-lived nuclear molecules. Gammasphere array.

doi: 10.1556/APH.14.2001.1-4.16
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13807.

2001PO06      J.Phys.(London) G27, L19 (2001)

D.N.Poenaru, W.Greiner, J.H.Hamilton, A.V.Ramayya

Fragment Configurations in Multi-Cluster Fission

RADIOACTIVITY ²⁵²Cf(SF); calculated Q-values and yields for multi-cluster fission; deduced decay mechanism features.

doi: 10.1088/0954-3899/27/4/101
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2001PO20      Acta Phys.Hung.N.S. 13, 79 (2001)

D.N.Poenaru, B.Dobrescu, W.Greiner, J.H.Hamilton, A.V.Ramayya

Fission Energy Surfaces and Ternary Fission

NUCLEAR STRUCTURE ²⁵²Cf; calculated deformation energy, shell corrections, T_1/2 for ternary fission. Three-center liquid drop model.

RADIOACTIVITY ²⁵²Cf(SF); calculated deformation energy, shell corrections, T_1/2 for ternary fission. Three-center liquid drop model.

doi: 10.1556/APH.13.2001.1-3.9
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2001PO31      Acta Phys.Hung.N.S. 14, 285 (2001)

D.N.Poenaru, W.Greiner, J.H.Hamilton, A.V.Ramayya

Nuclear Molecules in Ternary Fission

RADIOACTIVITY ²³⁶U, ²⁴⁰Pu, ²⁴⁶Cm, ²⁵²Cf, ^252,256Fm, ²⁶⁰No, ²⁶²Rf; calculated quasi-molecular states T_1/2 for ¹⁰Be-accompanied ternary fission.

doi: 10.1556/APH.14.2001.1-4.27
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2000PO09      J.Phys.(London) G26, L97 (2000)

D.N.Poenaru, B.Dobrescu, W.Greiner, J.H.Hamilton, A.V.Ramayya

Nuclear Quasi-Molecular States in Ternary Fission

RADIOACTIVITY ²⁵²Cf(SF); calculated deformation energies and shell correction energies in ternary fission, quasi-molecular T_1/2 in ternary fission for cases when the lightest fragment is ¹⁰Be or ¹²C.

doi: 10.1088/0954-3899/26/6/104
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1999PO05      J.Phys.(London) G25, L7 (1999)

D.N.Poenaru, W.Greiner

New Decay Modes: Multicluster spontaneous emission from nuclei

RADIOACTIVITY ²⁵²Cf(SF); calculated multi-cluster accompanied fission Q-values, fragment energies; deduced possible decay mechanism.

doi: 10.1088/0954-3899/25/3/012
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1999PO10      Phys.Rev. C59, 3457 (1999)

D.N.Poenaru, W.Greiner, J.H.Hamilton, A.V.Ramayya, E.Hourany, R.A.Gherghescu

Multicluster Accompanied Fission

RADIOACTIVITY ²⁵²Cf, ²⁶²Rf(SF); calculated multicluster accompanied fission Q-values, configurations.

doi: 10.1103/PhysRevC.59.3457
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1998GH02      J.Phys.(London) G24, 1149 (1998)

R.A.Gherghescu, D.N.Poenaru, W.Greiner

Fission Channels of ³⁰⁴120

NUCLEAR STRUCTURE ³⁰⁴120; calculated potential energy vs deformation, fission channels relative probabilities.

RADIOACTIVITY ³⁰⁴120(SF); calculated T_1/2.

doi: 10.1088/0954-3899/24/6/009
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1998GH04      Nuovo Cim. 111A, 105 (1998)

R.A.Gherghescu, D.N.Poenaru, W.Greiner

Energy Valleys of Double-Magic Superheavy Nuclei

NUCLEAR STRUCTURE ²⁹⁸Fl, ³⁰⁴120; calculated potential energy surfaces; deduced fission, fusion barriers, deformation parameters, shell effects.

1998PO02      J.Phys.(London) G24, L23 (1998)

D.N.Poenaru, W.Greiner, R.A.Gherghescu

Shell Closure at the Touching Point of Nuclear Fragments

NUCLEAR STRUCTURE ¹⁰⁶Te, ¹¹⁶Ce, ²¹²Po, ²²⁸Th, ^258,264Fm; calculated touching point deformation energy vs proton number; deduced alpha, cluster decay modes.

doi: 10.1088/0954-3899/24/3/002
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1998PO04      At.Data Nucl.Data Tables 68, 91 (1998)

D.N.Poenaru, W.Greiner, R.A.Gherghescu

Energy Released in Ternary Fission

NUCLEAR STRUCTURE Z=90-116; calculated ternary fission Q-values.

doi: 10.1006/adnd.1997.0758
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1998PO26      Nuovo Cim. 111A, 887 (1998)

D.N.Poenaru, R.A.Gherghescu, W.Greiner

Alpha-Decay Valley of ¹⁰⁶Te

NUCLEAR STRUCTURE ²³⁶Pu, ¹⁰⁶Te; calculated potential energy surfaces; deduced decay modes, related features. Phenomenological shell correction.

doi: 10.1007/BF03035974
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1997GH09      J.Phys.(London) G23, 1715 (1997)

R.A.Gherghescu, D.N.Poenaru, W.Greiner

Deformation Energy of Superheavy Nuclei

NUCLEAR STRUCTURE ²⁸⁰Hs, ²⁹⁸Fl, ³⁰⁴120; calculated potential energy vs deformation. Macroscopic-microscopic method.

doi: 10.1088/0954-3899/23/11/019
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1997PO21      Nuovo Cim. 110A, 1049 (1997)

D.N.Poenaru, W.Greiner, E.Hourany, R.A.Gherghescu

Even-Even-Like Alpha- and Cluster Emitters

doi: 10.1007/BF03035944
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1996GH02      Z.Phys. A354, 367 (1996)

R.A.Gherghescu, D.N.Poenaru, W.Greiner

Two-Dimensional Sequence of Shapes for Cold-Fission of ²⁶⁴Fm

NUCLEAR STRUCTURE ²⁶⁴Fm; calculated symmetrical cold fission inertia tensor components, potential energy surface function.

doi: 10.1007/s002180050059
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1996PO10      J.Phys.(London) G22, 621 (1996)

D.N.Poenaru, W.Greiner, E.Hourany

Proton-Rich Cluster Emitter Half-Lives

RADIOACTIVITY ^114,116Ba, ^118,120Ce, ¹²²Nd, ¹²⁶Sm, ¹³²Gd(¹²C), (¹⁶O), (²⁰Ne), (²⁴Mg), (²⁸Si); calculated cluster emission T_1/2, branching ratios with respect to α-, β-decay. Analytical super-asymmetric fission model.

doi: 10.1088/0954-3899/22/5/009
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1995GH11      Phys.Rev. C52, 2636 (1995)

R.A.Gherghescu, W.Greiner, D.N.Poenaru

Two-Dimensional Nuclear Inertia: Analytical relationships

RADIOACTIVITY ²⁵²Cf(⁴⁰Ar), (α); calculated cluster-, α-emission associated inertia tensors vs separation distance, light fragment radius. Werner-Wheeler approximation.

doi: 10.1103/PhysRevC.52.2636
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1995HO11      Phys.Rev. C52, 267 (1995)

E.Hourany, G.Berrier-Ronsin, A.Elayi, P.Hoffmann-Rothe, A.C.Mueller, L.Rosier, G.Rotbard, G.Renou, A.Liebe, D.N.Poenaru, H.L.Ravn

²²³Ra Nuclear Spectroscopy in ¹⁴C Cluster Radioactivity

RADIOACTIVITY ²²³Ra(¹⁴C); measured E(¹⁴C), T_1/2; deduced hindrance factors. Implanted source, SOLENO spectrometer.

doi: 10.1103/PhysRevC.52.267
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1995PO02      Phys.Rev. C51, 594 (1995)

D.N.Poenaru, W.Greiner, E.Hourani

¹²C Emission from ¹¹⁴Ba and Nuclear Properties

NUCLEAR STRUCTURE A=222-242; calculated cluster decay T_1/2, several model-dependent quantities. Different models.

RADIOACTIVITY ¹¹⁴Ba(¹²C); calculated T_1/2 vs (Q-value), correction energy, radii dependences. Different models.

doi: 10.1103/PhysRevC.51.594
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1994GH08      Fizika(Zagreb) B3, 119 (1994)

R.A.Gherghescu, W.Greiner, D.N.Poenaru

Unexpected Property of Proximity Potentials

NUCLEAR STRUCTURE Z=80-120; calculated cold fission barriers; deduced two maxima for Z=96-120. Two macroscopic models.

1994MI18      Z.Phys. A349, 39 (1994)

M.Mirea, D.N.Poenaru, W.Greiner

Threedimensional Dynamics of Nuclear Decay Modes

RADIOACTIVITY ²³⁴U(α), (²⁸Mg); calculated elongation, necking-in, mass asymmetry radii vs relative separation distance between centers. Nondissipative three-dimensional fission dynamics.

NUCLEAR STRUCTURE ²³⁴U; calculated necking-in radius vs relative separation distance between centers, cold fission, ¹⁰⁰Zr fragment. Nondissipative three-dimensional fission dynamics.

doi: 10.1007/BF01296331
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1994PO16      Z.Phys. A349, 307 (1994)

D.N.Poenaru, W.Greiner, E.Hourani, M.Hussonnois

Nuclear Structure Effects in Cluster Radioactivity

NUCLEAR STRUCTURE ²⁰⁸Pb; calculated cluster preformation probability; deduced structure role in low probability as parent compared to daughter in cluster decay. Semi-classical method.

doi: 10.1007/BF01288981
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1994PO17      Z.Phys. A349, 305 (1994)

D.N.Poenaru, W.Greiner

Cluster Preformation in Closed- and Mid-Shell Nuclei

NUCLEAR STRUCTURE A=221-242; calculated cluster preformation probability; deduced structure dependence. Semiclassical model.

doi: 10.1007/BF01288980
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1994PO18      Z.Phys. A349, 307 (1994)

D.N.Poenaru, W.Greiner, E.Hourani, M.Hussonnois

Nuclear Structure Effects in Cluster Radioactivity

RADIOACTIVITY ²²³Ra(¹⁴C); calculated cluster decay hindrance factors; deduced structure effects role. Analytical superasymmetric fission model.

doi: 10.1007/BF01288981
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1994PO29      Ann.Phys.(Leipzig) 3, 107 (1994)

D.N.Poenaru, E.Hourani, W.Greiner

Cluster Radioactivities of Odd-Mass Nuclei

RADIOACTIVITY ²²¹Fr, ^221,223Ra, ²²⁵Ac(¹⁴C); ²³³U, ²³¹Pa(²⁴Ne); ²³¹Pa(²³F); calculated cluster decay T_1/2, daughter excited states transitions. Fission model.

doi: 10.1002/andp.19945060205
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1993MI41      Roum.J.Phys. 38, 71 (1993)

M.Mirea, D.N.Poenaru, D.Mirea

Two-Center Shell Model with Mass-Asymmetry and Necking-In

NUCLEAR STRUCTURE ²³⁴U; calculated asymmetric fission one-body levels, ¹⁰⁰Zr light fragment. Two-center shell model, mass asymmetry, necking-in.

1993PO04      Phys.Rev. C47, 2030 (1993)

D.N.Poenaru, W.Greiner, R.Gherghescu

New Island of Cluster Emitters

NUCLEAR STRUCTURE A=114-123; calculated ¹²C, ¹⁶O, ²⁸Si, other cluster emission T_1/2 relative to α-decay, branching ratios; deduced new cluster emitters island. Analytical superasymmetric fission model.

doi: 10.1103/PhysRevC.47.2030
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1992GH03      Roum.J.Phys. 37, 1005 (1992)

R.Gherghescu, D.N.Poenaru

Potential Barriers for Symmetrical Cold Fission Processes

NUCLEAR STRUCTURE Z=80-120; N ≤ 200; calculated deformation energy vs interfragment distance in cold symmetrical fission. Yukawa-plus-exponential model, two intersecting spheres shape parametrization.

1992PO15      Fizika(Zagreb) B1, 221 (1992)

D.N.Poenaru, W.Greiner, R.Gherghescu, D.Mazilu

Metastability of α-Stable Neutron-Rich Nuclei

RADIOACTIVITY A=163-226; calculated cluster emission T_1/2. Proton deficient nuclei clusters, superasymmetric fission model.

1991PO09      At.Data Nucl.Data Tables 48, 231 (1991)

D.N.Poenaru, D.Schnabel, W.Greiner, D.Mazilu, R.Gherghescu

Nuclear Lifetimes for Cluster Radioactivities

NUCLEAR STRUCTURE Z=52-122; calculated partial T_1/2, Q for cluster emission.

doi: 10.1016/0092-640X(91)90008-R
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1991PO16      Phys.Scr. 44, 427 (1991)

D.N.Poenaru, W.Greiner

Cluster Preformation as Barrier Penetrability

RADIOACTIVITY N ≈ 40-160; analyzed α-decay T_1/2; deduced cluster preformation probability interpretation. Comparison with barrier penetrability in fission.

doi: 10.1088/0031-8949/44/5/004
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1991PO23      J.Phys.(London) G17, S443 (1991)

D.N.Poenaru, W.Greiner

Rare Decay Modes by Cluster Emission from Nuclei

NUCLEAR STRUCTURE A=222-238; calculated cluster decay T_1/2. Fission theory, prescission barrier penetrability.

doi: 10.1088/0954-3899/17/S/045
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1989HO16      Ann.Phys.(Paris) 14, 311 (1989)

E.Hourani, M.Hussonnois, D.N.Poenaru

Radioactivities by Light Fragment (C, Ne, Mg) Emission

1989PO18      Nucl.Phys. A502, 59c (1989)

D.N.Poenaru, W.Greiner, M.Ivascu

Predicted Halflives for Cluster Radioactivities

doi: 10.1016/0375-9474(89)90654-4
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1987PO08      Rev.Roum.Phys. 32, 283 (1987)

D.N.Poenaru, M.Ivascu, D.Mazilu, I.H.Plonski

Superasymmetric Fission Model for Deformed Nuclei

RADIOACTIVITY ^{221,222,223,224,226}Ra, ²²¹Fr, ²²⁵Ac(¹⁴C); ^230,232Th, ^232,233U, ²³¹Pa(²⁴Ne); ²³⁷Np(³²Si); ²⁴¹Am(³⁴Si); calculated log T_1/2. Superasymmetric fission model.

1987PO16      Z.Phys. A328, 309 (1987)

D.N.Poenaru, J.A.Maruhn, W.Greiner, M.Ivascu, D.Mazilu, R.Gherghescu

Cold Fission as Heavy Ion Emission

RADIOACTIVITY ^234,236U, ²³⁹Np, ²⁴⁰Pu(SF); calculated most probable cold fission light fragments, charged particle emission T_1/2 vs fragment mass. Analytical superasymmetric fission model.

1986PO06      At.Data Nucl.Data Tables 34, 423 (1986)

D.N.Poenaru, W.Greiner, K.Depta, M.Ivascu, D.Mazilu, A.Sandulescu

Calculated Half-Lives and Kinetic Energies for Spontaneous Emission of Heavy Ions from Nuclei

NUCLEAR STRUCTURE Z=47-106; calculated, evaluated heavy-ion SF decay characteristics, T_1/2, branching ratio relative to α-decay, Q, kinetic energies. Analytical superasymmetric fission model.

doi: 10.1016/0092-640X(86)90013-6
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1986PO15      Z.Phys. A325, 435 (1986)

D.N.Poenaru, W.Greiner, M.Ivascu, D.Mazilu, I.H.Plonski

Odd-Even Staggering of Heavy Cluster Spontaneous Emission Rates

RADIOACTIVITY ^221,222Ra, ²²⁸Th, ²²¹Fr, ^224,225Ac(¹⁴C); ^223,225,224Ac(¹⁵N); ^228,229Th(²⁰O); ²³⁰Th(²²O); ^229,230,232Th, ^{232,234,233,235}U, ²³¹Pa(²⁴Ne); ²³²Th, ^234,235U(²⁶Ne); ^234,233,235U, ²³²Th, ²³⁶Pu, ²³⁶Np(²⁸Mg); ^233,235U(²⁵Ne); ^240,239Pu, ²⁴²Cm, ²⁴¹Am(³⁴Si), ²⁵²Cf, ²⁵²Es(⁴⁶Ar); ²⁴⁰Cm, ²³⁷Np, ²³⁵U(³²Si); ²⁵²Cf, ²⁵¹Es, ²⁵⁵No, ²⁵⁴Md(⁴⁸Ca); ²³¹Pa(²³F); ²³⁷Np(³⁰Mg); ²³⁵U, ²³⁶Np(²⁹Mg); ²³⁹Pu(³³Si); ²⁵⁷Fm, ²⁵⁸Md(⁵¹Ca); calculated T_1/2, branching ratios. Analytical superasymmetric fission model.

1985GR01      Z.Phys. A320, 347 (1985)

W.Greiner, M.Ivascu, D.N.Poenaru, A.Sandulescu

On Exotic Nuclear Decay of ²²³Ra by Emission of ¹⁴C Nuclei

RADIOACTIVITY ²³⁸U; calculated α, Ne, Mg, S, ³⁴Si, Ar, Ca, Ti, Cr, Fe penetrability, T_1/2. Even-even cluster emission, superasymmetric fission mechanism.

doi: 10.1007/BF01881286
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1985PO11      Phys.Rev. C32, 572 (1985)

D.N.Poenaru, M.Ivascu, A.Sandulescu, W.Greiner

Atomic Nuclei Decay Modes by Spontaneous Emission of Heavy Ions

RADIOACTIVITY ²²²Fr, ^{222,223,224,226}Ra(¹⁴C); ^223,224Ac, ²³¹Th, ²³²U(¹⁵N); ^233,235U(²⁴Ne); ^233,235U(²⁵Ne); ²³³U, ²³⁶Np, ²³⁶Pu(²⁸Mg); ²³⁵U, ²³⁶Np(²⁹Mg); ²³⁹Cm(³²Si); ²⁵¹Cf(⁴⁶Ar); ²⁵³Fm, ²⁵⁴Md, ²⁵⁵No(⁴⁸Ca); ²⁵⁸Md, ²⁵⁹No(⁵⁰Ca); calculated decay T_1/2, (heavy ion/α) branching ratio.

doi: 10.1103/PhysRevC.32.572
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1985PO12      Rev.Roum.Phys. 30, 173 (1985)

D.N.Poenaru, M.Ivascu, A.Sandulescu, W.Greiner

New Natural Radioactivities by Emission of Heavy Ions

RADIOACTIVITY ²²²Fr, ^225,226Ra, ^{223,224,225,227}Ac, ^{227,228,229,230,232}Th, ²³¹Pa, ^{232,233,234,235,238}U, ^236,237Np, ^{236,239,240,242}Pu, ²⁴³Am, ^239,251,252Cf; calculated heavy ion emission T_1/2, branching ratio relative to α-decay.

1985PO14      J.Phys.(Paris), Lett. 46, L591 (1985)

D.N.Poenaru, M.Ivascu

Two Alpha, Three Alpha and Multiple Heavy-Ion Radioactivities

RADIOACTIVITY ^219,220Ac, ^{220,221,225,226}Th, ^222,223,225Pa, ²²¹Ra, ^232,236Pu, ²³³Am, ²³⁵Np, ²³⁶Pu(SF); calculated multiple, single heavy ion emission T_1/2 following fission, decay mode competition. Superasymmetric fission model, analytical variant.

doi: 10.1051/jphyslet:019850046013059100
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1985PO20      Phys.Rev. C32, 2198 (1985)

D.N.Poenaru, W.Greiner, M.Ivascu, A.Sandulescu

Heavy Cluster Decay of Trans-Zirconium ' Stable ' Nuclides

RADIOACTIVITY ¹⁵⁰Sm(¹²C), (α); ¹⁵¹Eu, ¹⁵⁶Dy, ¹⁸¹Ta, ^{180,182,183,184}W, ¹⁸⁴Os(α); ¹⁵⁴Gd(¹⁶O), (α); ¹⁶⁹Tm, ¹⁷⁰Yb(³²Si), (α); ¹⁶⁸Yb(³⁰Si), (α); ¹⁸⁰Hf, ¹⁸⁵Re(⁴⁸Ca), (α); ¹⁸⁶W(⁵⁰Ca), (α); ¹⁸⁷Os(⁴⁹Ca), (α); ¹⁸⁸Os(⁵²Ti), (α); ¹⁸⁹Os(⁵³Ti), (α); ¹⁹²Os(⁵⁸Cr), (α); ¹⁹¹Ir, ¹⁹²Pt(⁵⁶Cr), (α); ¹⁹⁸Pt(⁵⁸Ni), (α); ¹⁹⁷Au(⁶²Fe), (α); ¹⁹⁶Hg(⁶⁰Fe), (α); ²⁰²Hg(⁶⁸Ni), (α); calculated heavy cluster decay, Q, T_1/2. Analytical superasymmetric fission model.

doi: 10.1103/PhysRevC.32.2198
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1985SA02      Phys.Rev.Lett. 54, 490 (1985)

A.Sandulescu, D.N.Poenaru, W.Greiner, J.H.Hamilton

Comment on ' Exotic Nuclear Decay of ²²³Ra by Emission of ¹⁴C Nuclei '

NUCLEAR STRUCTURE ^223,226Ra, ²³²Th, ²³³U, ²³⁷Np; analyzed decay by ¹⁴C, ^24,25,26Ne, ³⁰Mg emission.

doi: 10.1103/PhysRevLett.54.490
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1984PO08      J.Phys.(London) G10, L183 (1984)

D.N.Poenaru, M.Ivascu, A.Sandulescu, W.Greiner

Spontaneous Emission of Heavy Clusters

RADIOACTIVITY ^223,226Ra, ²²⁷Ac, ^230,232Th, ^{232,233,234,235,238}U, ²³⁷Np, ²⁵²Cf(SF); calculated cluster SF decay T_1/2, (T_1/2(SF)/T_1/2(α)); deduced decay probability dependence on magic, near magic nature of daughter nucleus. Two-center spherical shape parametrization.

doi: 10.1088/0305-4616/10/8/004
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1984PO11      J.Phys.(Paris) 45, 1099 (1984)

D.N.Poenaru, M.Ivascu

⁵He Radioactivity

RADIOACTIVITY ^214,217At, ^217,218,226Ac, ^{219,221,218,227}Th, ^217,216Ra, ^215,216Fr, ^212,213Po, ²¹⁵Rn; calculated SF decay T_1/2 for ⁵He emission.

doi: 10.1051/jphys:019840045070109900
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1984PO22      Izv.Akad.Nauk SSSR, Ser.Fiz. 48, 1897 (1984)

D.N.Poenaru, M.Ivascu, A.Sendulesky, V.Grainer

Decay of Heavy Nuclei with Cluster Emission

NUCLEAR STRUCTURE ^223,224Ra, ²²⁷Ac, ^230,232Th, ²³¹Pa, ^{232,233,234,235,238}U, ²³⁷Np, ²⁵²Cf; calculated α-decay to cluster emission T_1/2 ratio following fission.

1984PO25      Rev.Roum.Phys. 29, 587 (1984)

D.N.Poenaru, M.Ivascu

The Island of Alpha Activity Close to the Double Magic Nucleus ¹⁰⁰Sn

RADIOACTIVITY ^{106,108,107,109,110}Te, ^{110,112,111,113}Xe, ^{110,111,112,113}I, ¹¹⁴Cs(α); N=55-100; Te, Xe, I, Cs, Ba, La, Ce, Pr, Nd, Pm(α); calculated T_1/2 for range of isotopes. Semi-empirical formula, Q from mass formula.

1984PO26      Rev.Roum.Phys. 29, 623 (1984)

D.N.Poenaru, M.Ivascu

Spontaneous Emission of Charged Particles from Nuclei

NUCLEAR STRUCTURE ²⁰⁸Pb, ²⁰⁹Bi, ²¹¹At, ²¹⁰Po, ²¹²Rn; calculated spontaneous Z=3-10 charged particle decay T_1/2. Experimental mass tabulation input.

1983PO06      J.Phys.(Paris) 44, 791 (1983)

D.N.Poenaru, M.Ivascu

Estimation of the Alpha Decay Half-Lives

RADIOACTIVITY N ≈ 90-155; calculated α-decay partial T_1/2. Fission theory based semi-empirical relationships.

doi: 10.1051/jphys:01983004407079100
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1983PO07      Rev.Roum.Phys. 28, 309 (1983)

D.N.Poenaru, M.Ivascu

A Basic Set of Experimental Data on the Strong Alpha Transitions

RADIOACTIVITY A=108-244; analyzed α-decay T_1/2, Q data; deduced semi-empirical formula parameters.

1982PO06      Rev.Roum.Phys. 27, 129 (1982)

D.N.Poenaru, M.Ivascu

Fission Approach to the Alpha Decay

RADIOACTIVITY N=110-156; calculated α-decay T_1/2, interaction, fission barriers, shell effects. Fission approach, Myers-Swiatecki liquid drop model.

1981PO11      J.Phys.(London) G7, 965 (1981)

D.N.Poenaru, M.Ivascu

Alpha Decay from Fission Isomeric States

RADIOACTIVITY, Fission ^236m,238mU, ^{236m,238m,240m,242m}Pu, ^240m,242mCm; calculated α-decay T_1/2. Liquid drop model, phenomenological shell correction.

doi: 10.1088/0305-4616/7/7/019
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1980PO02      Rev.Roum.Phys. 25, 55 (1980)

D.N.Poenaru, M.Ivascu, D.Mazilu, A.Sandulescu

On the Charge Density Asymmetry of Heavy-Ion Fusion Reactions

NUCLEAR REACTIONS ¹⁰⁹Ag(⁴⁰Ar, X), ¹³⁸Ce(⁵⁷Fe, X), ¹⁴⁴Nd(⁶¹Ni, X), E not given; calculated interaction barriers, fusion Q, potential energy surfaces. Generalized liquid drop model.

1980PO10      J.Phys.(Paris), Lett. 41, L-589 (1980)

D.N.Poenaru, M.Ivascu, D.Mazilu

A New Semiempirical Formula for the Alpha Decay Half-Lives

RADIOACTIVITY, Fission Nd, Dy, Er, Sm, Yb, Hf, Gd, Os, Pt, Hg, Po, Rn, Ra, Th, U, Pu, Cf, Cm, Fm, No; calculated α-decay T_1/2. Semiempirical formula, explicit neutron, proton number dependence.

doi: 10.1051/jphyslet:019800041024058900
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