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NSR database version of May 10, 2024.

Search: Author = M.M.Botros

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2016IS06      Int.J.Mod.Phys. E25, 1650026 (2016)

M.Ismail, W.M.Seif, M.M.Botros

Adiabatic and coupled channels calculations for near barrier fusion of ¹⁶O+²³⁸U using realistic nucleon-nucleon interaction

NUCLEAR REACTIONS ²³⁸U(¹⁶O, X)²⁵⁴Fm, E(cm) < 96 MeV; calculated σ, fusion barrier distribution using potentials derived from the DD M3Y-Reid NN force. Comparison with experimental data.

doi: 10.1142/S0218301316500269
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2016IS07      Phys.Rev. C 93, 054618 (2016)

M.Ismail, A.Adel, M.M.Botros

Nuclear spin of odd-odd α emitters based on the behavior of α-particle preformation probability

RADIOACTIVITY ^{166,167,169,171,172,173,174,175,177}Ir, ^{170,173,177,179,181,183,184,185,186}Au, ^{177,179,180,181}Tl, ^{184,185,186,187,188,189,190,191,192,193,194,195}Bi, ^{191,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216}At, ^{200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221}Fr, ^{206,207,208,209,210,211,212,213,214,215}Ac(α); calculated half-lives and preformation probabilities; deduced Jπ values from systematics of preformation probabilities. Wentzel-Kramers-Brillouin (WKB) approximation in combination with Bohr-Sommerfeld quantization condition using a realistic density-dependent CDM3Y1-Paris NN interaction. Comparison with experimental values.

doi: 10.1103/PhysRevC.93.054618
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2015SE14      Phys.Rev. C 92, 044302 (2015)

W.M.Seif, M.M.Botros, A.I.Refaie

Preformation probability inside α emitters having different ground state spin-parity than their daughters

RADIOACTIVITY ^149,151Tb, ^173,177,181Hg, ¹⁸⁰Tl, ^{179,181,183,185,187,189}Pb, ^{184,186,187,188,189,190,191,192,193,194,195,196,209,211,212,213}Bi, ^{189,203,209,211}Po, ^{194,195,210,212,220}At, ^{193,205,211,213,219,221}Rn, ^{210,212,214,220,221}Fr, ^{207,213,215,219,221,223}Ra, ^{210,214,216,220,223,224,225,226}Ac, ^{209,211,215,217,221,223,225,227,229}Th, ^{224,225,228,229,230}Pa, ^{217,219,223,225,227,231,235}U, ^{227,229,231,235,236,237}Np, ^{229,233,237,239,241}Pu, ^{235,239,240,241,243}Am, ^{239,241,243,245,247}Cm, ^{243,244,245,247,249}Bk, ^{237,247,249,251,253}Cf, ^{245,246,252,254,255}Es, ^{243,245,247,249,251,253,255,257}Fm, ^{247,249,251,255,256,257,258}Md, ^{253,255,257,257}No, ^255,257,259Lr, ^{255,257,259,261}Rf, ^257,259Db, ^259,261,265Sg, ²⁶¹Bh, ^263,267Hs, ^{267,269,271,273,277}Ds, ^277,281,285Cn(α); calculated preformation probabilities S(_α), half-lives for ground state to ground state unfavored α decays. Extended cluster model, with the Wentzel-Kramers-Brillouin penetrability and assault frequency, and Hamiltonian energy density scheme based on the Skyrme SLy4 interaction. Comparison with experimental values.

doi: 10.1103/PhysRevC.92.044302
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2014IS07      Can.J.Phys. 92, 1411 (2014)

M.Ismail, A.Y.Ellithi, M.M.Botros, A.F.Abdel Reheem

Fusion barrier parameters for a spherically deformed pair of nuclei

NUCLEAR REACTIONS ²²⁴Ra(⁴⁸Ca, X)²⁷²Hs, ²⁴⁴Pu(⁴⁸Ca, X)²⁹²Fl, E not given; calculated Coulomb barrier parameters, impact of deformations. The double folding model with effective density dependent M3Y-NN force, and the energy density functional method based on Skyrme force, comparison with available data.

doi: 10.1139/cjp-2013-0476
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2012IS08      Phys.Rev. C 86, 044317 (2012)

M.Ismail, A.Y.Ellithi, M.M.Botros, A.Abdurrahman

Penetration factor in deformed potentials: Application to α decay with deformed nuclei

RADIOACTIVITY ²¹⁰Pb, ^{212,214,216,218}Po, ^{214,216,218,220,222}Rn, ^{216,218,220,222,224,226}Ra, ^{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, ^{238,240,242,244,246,248}Cm, ^{240,242,244,246,248,250,252,254}Cf, ^{246,248,250,252,254,256}Fm, ^{252,254,256,258}No, ^256,258,260Rf, ^260,266Sg, ^264,266,270Hs, ^270,280Ds, ²⁸⁴Cn, ^286,288Fl, ^290,292Lv, ²⁹⁴118(α); calculated half-lives using deformed density dependent cluster model. Comparison with experimental data.

doi: 10.1103/PhysRevC.86.044317
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2011IS12      Int.J.Mod.Phys. E20, 2407 (2011)

M.Ismail, M.M.Botros, A.A.Wheida

Accuracy of the multipole expansion of density distribution in the presence of octupole deformation

NUCLEAR STRUCTURE ⁴⁰Ca, ²⁰⁸Pb; calculated multipole expansion, octupole deformation. Zero-range nucleon-nucleon (NN) interaction.

doi: 10.1142/S0218301311020423
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2010IS01      Phys.Rev. C 81, 024602 (2010)

M.Ismail, A.Y.Ellithi, M.M.Botros, A.Adel

Systematics of α-decay half-lives around shell closures

RADIOACTIVITY ^{178,180,184,186,190,194}Pb(α); ^{188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218}Po(α); ^{238,240,242,244,246,248}Cm(α);^{240,242,244,246,248,250,252,254}Cf(α); ^{246,248,250,252,254,256}Fm(α); ^252,254,256No(α); ^{262,264,266,268,270,272}Sg(α); ^{264,266,268,270,272,274,276}Hs(α); ^{268,270,272,274,276,278}Ds(α); ^{282,284,286,288,290,292,294,296,298,300,302,304}Cn(α); ^{286,288,290,292,294,296,298,300,302,304,306}Fl(α); ^{286,288,290,292,294,296,298,300,302,304,306,308}Lv(α);^{290,292,294,296,298,300,302,304,306,308,310}Og(α); ^{290,292,294,296,298,300,302,304,306,308,310}120(α); calculated α-decay half-lives using the preformed α model with the M3Y Paris effective interaction for different values of pre-formation probabilities. Comparison with experimental data.

doi: 10.1103/PhysRevC.81.024602
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2010IS05      Phys.Atomic Nuclei 73, 1660 (2010)

M.Ismail, A.Y.Ellithi, M.M.Botros, A.Adel

Binding energies of even-even superheavy nuclei in a semi-microscopic approach

NUCLEAR STRUCTURE Z=98-120; calculated binding energies, quadrupole, hexadecapole deformations, half-density radii. Skyrme nucleon-nucleon interaction, Thomas-Fermi approach.

doi: 10.1134/S1063778810100042
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2009IS03      Nucl.Phys. A828, 333 (2009)

M.Ismail, W.M.Seif, M.M.Botros

Effect of octupole and higher deformations on Coulomb barrier

NUCLEAR REACTIONS ²⁴⁴Pu(⁴⁸Ca, X)292114, E≈3-5 MeV/nucleon; calculated Coulomb barrier height/position using a double-folding model including effect of deformation.

doi: 10.1016/j.nuclphysa.2009.07.013
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2007IS07      Phys.Rev. C 75, 064610 (2007)

M.Ismail, A.Y.Ellithi, M.M.Botros, A.E.Mellik

Azimuthal angle dependence of Coulomb and nuclear interactions between two deformed nuclei

NUCLEAR REACTIONS ²³⁸U(²³⁸U, X), E not given; calculated azimuthal angle variation of the coulomb and nuclear heavy-ion potentials within the framework of the double folding model.

doi: 10.1103/PhysRevC.75.064610
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2003IS11      Yad.Fiz. 66, 1654 (2003); Phys.Atomic Nuclei 66, 1607 (2003)

M.Y.Ismail, A.Y.Ellithi, M.M.Osman, M.M.Botros

The Deformation and Orientation Effect on Reaction Cross Section with Deformed Targets

NUCLEAR REACTIONS ¹²⁰Sn, ¹⁵⁴Sm, ²³⁸U(¹²C, X), (¹⁶O, X), (²⁸Si, X), (⁴⁰Ca, X), (⁶⁰Ni, X), (⁹⁰Zr, X), (²⁰⁸Pb, X), E=30, 44, 77 MeV/nucleon; ¹⁷N(¹²C, X), E=0-900 MeV/nucleon; ²³⁸U(¹²C, X), E=40-100 MeV/nucleon; calculated reaction σ vs target deformation and orientation. Glauber-Sitenko theory, optical-limit approximation, comparisons with data.

doi: 10.1134/1.1611565
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