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NSR database version of April 29, 2024.

Search: Author = R.Gharaei

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2023GH03      Nucl.Phys. A1037, 122700 (2023)

R.Gharaei, M.Jalali Shakib, K.P.Santhosh

Description of temperature effects on proton radioactivity

RADIOACTIVITY ^108,109I, ^112,113Cs, ¹¹⁷La, ¹²¹Pr, ^130,131Eu, ¹³⁵Tb, ^140,141Ho, ^{144,145,146,147}Tm, ^150,151Lu, ^155,156,157Ta, ^159,160,161Re, ^165,166,167Ir, ^170,171Au, ^176,177Tl, ¹⁸⁵Bi(p); analyzed available data; deduced T_1/2, influence of temperature dependence of the proton-core interaction potential through the nuclear surface tension coefficient γ on the half-lives of proton decay processes.

doi: 10.1016/j.nuclphysa.2023.122700
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2022GH02      Nucl.Phys. A1019, 122381 (2022)

R.Gharaei, M.R.Yazdi

The influence of the nuclear matter incompressibility on heavy-ion fusion reactions at near- and above-barrier energies

NUCLEAR REACTIONS ⁶²Ni, ⁹²Zr, ¹¹²Sn(¹⁶O, X), ⁹³Nb, ¹³⁹La, ²⁰⁸Pb(¹⁹F, X), ²⁰⁸Pb(²⁰Ne, X), ⁵⁸Ni, ¹⁴⁴Nd(²⁸Si, X), ¹⁶⁸Er(³⁴S, X), ⁹²Mo(⁶⁴Ni, X), ¹⁴⁴Sm(¹⁷O, X), ¹¹²Sn(⁶⁴Ni, X), ⁷⁰Ge(¹⁶O, X), ⁴⁸Ca, ⁵⁸Ni(³²S, X), ⁷³Ge(³⁷Cl, X), ⁵⁴Fe(⁵⁸Ni, X), ⁶⁴Ni(⁶⁴Ni, X), ¹⁸²W, ¹⁹⁴Pt(¹⁶O, X), ⁹³Nb(²⁸Si, X), ¹⁹²Os(⁴⁰Ca, X), ³⁰Si(³⁰Si, X), ⁶⁴Ni(³²S, X), ⁹²Zr(³⁵Cl, X), ³⁰Si(²⁴Mg, X), ¹⁷⁰Er(³⁰Si, X), ⁴⁸Ca(⁴⁰Ca, X), E(cm)<140 MeV; analyzed available data; deduced fusion σ, incompressibility constants, diffuseness parameters, barrier heights.

doi: 10.1016/j.nuclphysa.2021.122381
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2022GH09      Eur.Phys.J. A 58, 179 (2022)

R.Gharaei, S.Mohammadi, D.T.Akrawy, A.H.Ahmed

Calculation of α-decay half-lives for isotopes around N = Z using different proximity-type potentials

RADIOACTIVITY ^{105,106,107,108,109,110}Te, ^{108,109,110,111,112,113}I, ^{109,110,111,112,113}Xe, ^112,114Cs, ¹¹⁴Ba(α); calculated T_1/2 within the framework of 16 different versions of proximity potentials. Comparison with available data.

doi: 10.1140/epja/s10050-022-00820-9
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2021GH03      Eur.Phys.J. A 57, 104 (2021)

R.Gharaei, F.Kamelan Najjar, N.Ghal-Eh

Systematic study on α-decay half-lives: a new dependency of effective sharp radius on α-decay energy

RADIOACTIVITY ^{277,279,281,283,285,287,289,291,293,295,297,299,301,303,305,307,309,311,313}Ts, ^{278,280,282,284,286,288,290,292,294,296,298,300,302,304,306,308,310,312,314}Og, ^{279,281,283,285,287,289,291,293,295,297,299,301,303,305,307,309,311,313,315}119, ^{280,282,284,286,288,290,292,294,296,298,300,302,304,306,308,310,312,314,316}120(α); calculated T_1/2 using the framework of one-dimensional WKB approximation.

doi: 10.1140/epja/s10050-021-00419-6
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2021GH04      Nucl.Phys. A1013, 122223 (2021)

R.Gharaei, H.Hasanzade

Sub-barrier fusion of ^{34, 36}S+^{204, 206, 208}Pb: Signature of isotopic dependence of repulsive core potential in heavy-ion fusion reactions

NUCLEAR REACTIONS ^204,206,208Pb(³⁴S, X), (³⁶S, X), E(cm)<170 MeV; analyzed available data; deduced fusion σ using the effective M3Y force of the CDM3Y6 based on the G-matrix elements of the Paris interaction to formulate the NN interactions.

doi: 10.1016/j.nuclphysa.2021.122223
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2021GH14      Chin.Phys.C 45, 124101 (2021)

R.Gharaei, A.Fuji, B.Azadegan

Survey of deep sub-barrier heavy-ion fusion hindrance phenomenon for positive and negative Q-value systems using the proximity-type potential

NUCLEAR REACTIONS ¹⁹⁷Au(¹¹B, X), ¹⁹⁸Pt(¹²C, X), ²⁰⁸Pb(¹⁶O, X), ⁹⁴Mo(²⁸Si, X), ⁹⁶Zr(⁴⁸Ca, X), ⁶⁴Ni(²⁸Si, X), ⁵⁸Ni(⁵⁸Ni, X), ⁸⁹Y(⁶⁰Ni, X), ⁹⁰Zr(³⁶S, X), (⁴⁰Ca, X), ⁴⁰Ca(⁴⁰Ca, X), ⁴⁸Ca(⁴⁸Ca, X), ³⁰Si(¹²C, X), (²⁸Si, X), ²⁸Si(²⁴Mg, X), ⁴⁸Ca(³⁶S, X), (⁴⁰Ca, X), E not given; analyzed available data; calculated fusion σ at extreme sub-barrier energies using the coupled-channels (CC) theory that is based on the proximity formalism.

doi: 10.1088/1674-1137/ac23d3
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2021GH16      Phys.Scr. 96, 065306 (2021)

R.Gharaei, A.Fuji, B.Azadegan, A.A.Mowlavi

Exploring the fusion hindrance phenomenon: the case of ^{32, 34}S + ⁸⁹Y

NUCLEAR REACTIONS ⁸⁹Y(³²S, X), (³⁴S, X), E(cm)<100 MeV; analyzed available data; deduced sub-barrier fusion σ using the coupled-channels (CC) calculations, including couplings to the low-lying 2⁺ and 3^- states in reacting nuclei as well as mutual and multi-phonon excitations of these states, based on the proximity potential model.

doi: 10.1088/1402-4896/abf189
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2021SH32      Nucl.Phys. A1015, 122303 (2021)

J.Sheibani, R.Gharaei, A.Mirjalili, K.Javidan

Heavy-ion fusion cross sections in the barrier and high-energy regions: Signature of energy dependence in the repulsive core potential

NUCLEAR REACTIONS ²⁴⁸Cm(²⁸Mg, X), ²³⁸U(³⁶S, X), ²⁰⁸Pb(⁴⁸Ca, X), ²⁰⁹Bi(⁵⁰Ti, X), ²³⁸U(⁴⁰Ca, X), (⁴⁸Ca, X), E=190-240 MeV; analyzed available data; deduced effect of incompressibility of cold nuclear matter (CNM) on the high-energy fusion data.

doi: 10.1016/j.nuclphysa.2021.122303
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2019GH06      Nucl.Phys. A990, 47 (2019)

R.Gharaei, A.Hadikhani, V.Zanganeh

An explanation for the anomaly problem of diffuseness parameter of the nucleus-nucleus potential in heavy-ion fusion reactions: A possible thermal solution

doi: 10.1016/j.nuclphysa.2019.06.003
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2019GH07      Nucl.Phys. A990, 294 (2019)

R.Gharaei, G.L.Zhang

Assessment of the quality of different pocket formulas in reproducing experimental sub-barrier fusion cross sections

doi: 10.1016/j.nuclphysa.2019.07.012
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2019GH08      Eur.Phys.J. A 55, 119 (2019)

R.Gharaei, S.Mohammadi

Study of the surface energy coefficient used in nuclear proximity potential of the α-nuclei systems from density-dependent nucleon-nucleon interactions

doi: 10.1140/epja/i2019-12804-5
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2019ZA10      Nucl.Phys. A992, 121637 (2019)

V.Zanganeh, R.Gharaei, A.M.Izadpanah

Comparative study for different nuclear proximity potentials applied to quasi-elastic scattering and fusion reactions

doi: 10.1016/j.nuclphysa.2019.121637
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2018GH06      Nucl.Phys. A979, 237 (2018)

R.Gharaei, V.Zanganeh, N.Wang

Systematic study of proximity potentials for heavy-ion fusion cross sections

NUCLEAR REACTIONS ²⁴Mg(³⁴S, x), E(cm)=24-33 MeV;³⁰Si(²⁸Si, x), E(cm)=25-37 MeV;⁴⁰Ca(⁴⁰Ca, x), E(cm)=47-66 MeV;⁴⁸Ti(⁴⁰Ca, x), E(cm)=53-85 MeV;³²S(²⁴Mg, x), E(cm)=26-33 MeV;⁵⁴Fe(³⁵Cl, x), E(cm)=55-82 MeV;⁷²Ge(¹⁶O, x), E(cm)=30-52 MeV;¹⁸⁶W(¹⁶O, x), E(c)=62-98 MeV;⁹²Zr(²⁸Si, x), E(cm)=63-90 MeV;¹⁴⁴Sm(¹⁶O, x), E(cm)=56-90 MeV; calculated fusion σ using EBDM (Empirical Barrier Distribution Model) with different proximity potentials and also using coupled channels; compared with data; deduced the best of 14 tested proximity potentials.

doi: 10.1016/j.nuclphysa.2018.09.032
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2017GH02      J.Phys.(London) G44, 045108 (2017)

R.Gharaei

Analysis of the low- and high-energy fusion cross sections: the case of ⁵⁸Ni+⁵⁴Fe

NUCLEAR REACTIONS ⁵⁴Fe(⁵⁸Ni, X)¹¹²Xe, E(cm)<110 MeV; analyzed available data; deduced fusion σ, S-factor, J, π.

doi: 10.1088/1361-6471/aa5f7d
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2017GH07      Eur.Phys.J. A 53, 147 (2017)

R.Gharaei, A.Hadikhani

A systematic study on the influence of nuclear surface tension and temperature upon the parameterization of the fusion dynamics

NUCLEAR STRUCTURE Z=3-92; calculated fusion barrier position and height for a large number of combinations of colliding nuclei; deduced parameterized formula using experimental data, its parameters. Compared with data.

doi: 10.1140/epja/i2017-12336-0
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2017ZA04      Phys.Rev. C 95, 034620 (2017)

V.Zanganeh, R.Gharaei, N.Wang

Dynamical explanation for the anomaly in the diffuseness parameter of the nucleus-nucleus potential in heavy-ion fusion reactions

NUCLEAR REACTIONS ⁴⁶Ti(⁴⁰Ca, X), E(cm)=65, 75 MeV; calculated time evolution of density distribution. ⁹²Zr(¹⁶O, X), E(cm)=45, 50, 55, 60 MeV; ⁹²Zr(²⁸Si, X), E(cm)=70, 75, 80, 85 MeV; calculated dynamical nucleus-nucleus potentials. ⁹²Zr(¹²C, X), E(cm)=28-43 MeV; ⁹²Zr(¹⁶O, X), E(cm)=37-65 MeV; ⁹²Zr(²⁸Si, X), E(cm)=65-90 MeV; ⁹²Zr(³⁵Cl, X), E(cm)=77-105 MeV; ⁴⁶Ti(⁴⁰Ca, X), E(cm)=54-80 MeV; ¹⁵⁴Sm(¹⁶O, X), E(cm)=52-75 MeV; calculated fusion σ(E), diffuseness parameter as a function of incident energy. Improved quantum molecular dynamics (ImQMD) model. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.034620
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2016GH04      Nucl.Phys. A952, 28 (2016)

R.Gharaei, V.Zanganeh

Temperature-dependent potential in cluster-decay process

RADIOACTIVITY ²²¹Fr, ^{221,222,223,224,226}Ra, ²²⁵Ac, ^224,226Th(¹⁴C);^226,228Th(¹⁸O);²³¹Pa(²³F);^230,232Th, ²³¹Pa, ^{230,232,233,234}(²⁴Ne);²³³U(²⁵Ne);²³²Th, ^234,236U(²⁶Ne);²³⁶Pu(²⁸Mg);²³⁷Np, ²³⁸Pu(³⁰Mg);²⁴¹Am, ²⁴²Cm(³⁴Si); calculated minimum angular momentum, temperature, T_1/2; deduced proximity potential Hf parameter. T_1/2 compared to data. Z=56-104; calculated T_1/2; deduced temperature dependence of emission of ²⁶Mg and ²⁸Mg clusters on parent mass for Np decays. T_1/2 compared with published ASAF approach. WKB approximation with two different proximity 2010 potentials.

doi: 10.1016/j.nuclphysa.2016.04.001
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2016GH07      Eur.Phys.J. A 52, 129 (2016)

R.Gharaei, J.Sheibani

Parameterization of fusion barriers for light-projectiles-induced reactions using the proximity approach

doi: 10.1140/epja/i2016-16129-7
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2013GH02      Phys.Rev. C 88, 034601 (2013)

O.N.Ghodsi, H.R.Moshfegh, R.Gharaei

Role of the saturation properties of hot nuclear matter in the proximity formalism

NUCLEAR REACTIONS ⁵⁴Fe, ^58,62Ni, ⁵⁹Co(¹⁶O, X), E(cm)=25-48 MeV; ⁶²Ni(⁴⁰Ca, X), E(cm)=65-110 MeV; ^72,73Ge(³⁷Cl, X), E(cm)=63-77 MeV; ⁵⁸Ni(²⁸Si, X), E(cm)=47-63 MeV; ^62,64Ni(³⁰Si, X), E not given; ⁶⁰Ni(³⁵Cl, X), E not given; calculated barrier heights V_B and positions R_B in fusion reactions, fusion σ(E), diffuseness parameter vs temperature. Equation of state (EoS) extracted from extended Thomas-Fermi model (ETFM) for asymmetric nuclear matter at finite temperature. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.034601
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2013GH06      Phys.Rev. C 88, 054617 (2013)

O.N.Ghodsi, R.Gharaei

Analysis of heavy-ion fusion reactions at extreme sub-barrier energies using the proximity formalism

NUCLEAR REACTIONS ¹⁰⁰Mo(²⁸Si, X), E(cm)=62-98 MeV; ⁵⁴Fe(⁵⁸Ni, X), ⁶⁴Ni(⁶⁴Ni, X), E(cm)=82-110 MeV; calculated fusion σ(E). Coupled-channels approach based on proximity potential Prox.77 and its modified forms IPM-1, IPM-2 and IPM-3, with couplings to the low-lying 2+ and 3- states in target and projectile nuclei. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.054617
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2013GO15      Chin.Phys.Lett. 30, 102502 (2013)

M.Golshanian, O.N.Ghodsi, R.Gharaei, V.Zanganeh

The Analysis of the Fusion Reaction of two Colliding Nuclei Using the FCC Lattice Model

NUCLEAR REACTIONS ⁶⁴Ni, ⁹²Zr(²⁸Si, X), ⁶⁰Ni(⁵⁸Ni, X), ⁵⁸Ni(⁴⁸Ti, X), ⁴⁸Ti(⁴⁰Ca, X), ⁴⁶Ti(⁴⁶Ti, X), E<120 MeV; calculated fusion cross sections based on the FCC+CDM3Y6 model. Comparison with available data.

doi: 10.1088/0256-307X/30/10/102502
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2012GH01      Eur.Phys.J. A 48, 21 (2012)

O.N.Ghodsi, R.Gharaei

The systematic study of the influence of neutron excess on the fusion cross-sections using different proximity-type potentials

COMPILATION ^28,29,30Si(¹²C, X), (¹⁶O, X), E not given;²⁸Si(¹⁸O, X), (²⁸Si, X), E not given; ³⁰Si(¹⁶O, X), (²⁸Si, X), (³⁰Si, X), E not given;^40,44,48Ca(⁴⁰Ca, X), E not given;⁴⁸Ca(⁴⁸Ca, X), E not given; ⁵⁸Ni(²⁸Si, X), (³⁰Si, X), (³²S, X), (³⁴S, X), (³⁶S, X), (⁴⁰Ar, X), (⁴⁰Ca, X), (⁴⁸Ti, X), (⁵⁸Ni, X), E not given;⁶⁰Ni(⁴⁸Ti, X), (⁵⁰Ti, X), E not given;⁶²Ni(²⁸Si, X), (³⁰Si, X), (⁴⁰Ar, X), (⁴⁰Ca, X), E not given;⁶⁴Ni(²⁸Si, X), (³⁰Si, X), (³²S, X), (³⁴S, X), (³⁶S, X), (⁴⁰Ar, X), (⁴⁶Ti, X), (⁴⁸Ti, X), (⁵⁸Ni, X), (⁶⁴Ni, X), E not given; compiled, analyzed data on σ and fusion barriers; calculated σ, fusion barriers using different proximity potentials.

doi: 10.1140/epja/i2012-12021-x
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2012GH06      Phys.Rev. C 85, 064620 (2012)

O.N.Ghodsi, R.Gharaei

Temperature dependence of the repulsive core potential in heavy-ion fusion reactions

NUCLEAR REACTIONS ⁴⁰Ca(²⁸Si, X), E(cm)=175.2-265.8 MeV; ⁴⁸Ti(³⁵Cl, X), E(cm)=57.5-92.2 MeV; ⁷⁴Ge(⁴⁰Ar, X), E(cm)=108.4-147.3 MeV; calculated fusion cross sections, total interaction potentials, repulsive core strengths, temperature-dependent potentials. Equation of state of hot nuclear matter based on density- dependent Seyler-Blanchard formalism. Comparison with experimental data.

doi: 10.1103/PhysRevC.85.064620
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2012GH08      Phys.Rev. C 86, 024615 (2012)

O.N.Ghodsi, R.Gharaei, F.Lari

Systematic study of the isotopic dependence of fusion dynamics for neutron- and proton-rich nuclei using a proximity formalism

NUCLEAR REACTIONS ²²Si(¹⁰C, X), ^{22,24,26,28,29,30}Si(¹²C, X), (¹⁶O, X), ^20,22,24Mg, ²²Si(¹²O, X), ²⁴Mg, ²²Si(¹⁴O, X), ²⁴Mg, ²⁸Si(¹⁸O, X), ^24,26Mg(¹⁶O, X), ^30,32S(²⁰Mg, X), (²²Mg, X), ^32,34S(²⁴Mg, X), (²⁶Mg, X), ^22,24Si(²²Si, X), ^24,26Si(²⁴Si, X), ^26,28Si(²⁶Si, X), ^28,30Si(²⁸Si, X), ³⁰Si(³⁰Si, X), ^52,54,56Ni(²⁶Si, X), ^{52,54,58,62,64}Ni(²⁸Si, X), ^58,62,64Ni(³⁰Si, X), ^34,40Ca(³⁴Ca, X), ^36,40Ca(³⁶Ca, X), ^38,40Ca, ^38,40,42,44Ti(³⁸Ca, X), ⁴⁰Ca, ^{38,40,42,46,48,50}Ti(⁴⁰Ca, X), (⁴⁴Ca, X), ^40,48Ca(⁴⁸Ca, X), ^52,56Ni(²⁶S, X), (²⁸S, X), (³⁰S, X), ^58,64Ni(³²S, X), (³⁴S, X), (³⁶S, X), ^52,54,56Ni(³⁴Ar, X), ^52,54Ni(³⁶Ar, X), ^58,60,62,64Ni(⁴⁰Ar, X), ^50,52,54,56Ni(³⁶Ca, X), ^52,54,56Ni(³⁸Ca, X), ^52,54,58,62Ni(⁴⁰Ca, X), ^48,50,52,56Ni(⁴⁰Ti, X), ^52,56Ni(⁴²Ti, X), ^58,60,64Ni(⁴⁸Ti, X), ⁶⁴Ni(⁴⁶Ti, X), ⁶⁰Ni(⁵⁰Ti, X), ⁴⁸Ni(⁴⁸Ni, X), ⁵⁰Ni(⁵⁰Ni, X), (⁵²Ni, X), ^50,54,56Ni(⁵⁴Ni, X), ^50,52,54Ni(⁵⁶Ni, X), ^58,64Ni(⁵⁸Ni, X), ⁶⁴Ni(⁶⁴Ni, X), E(cm)=55-85 MeV; calculated fusion σ, barrier positions, barrier heights based on the AW 95, Bass 80, Denisov DP, and Prox. 2010 potentials. Proximity formalism. Comparison with experimental data.

doi: 10.1103/PhysRevC.86.024615
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2011GH06      Phys.Rev. C 84, 024612 (2011)

O.N.Ghodsi, R.Gharaei

Equation of state of hot polarized nuclear matter and heavy-ion fusion reactions

NUCLEAR REACTIONS ⁴⁰Ca(⁴⁰Ar, X), E(cm)=80-140 MeV; calculated density distribution overlaps, total potentials, fusion cross sections; deduced incompressibility effects of nuclear matter for the heavy-ion fusion reactions using equation of state of hot polarized nuclear matter. Comparison with experimental data.

doi: 10.1103/PhysRevC.84.024612
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