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NSR database version of April 27, 2024.

Search: Author = A.H.Ahmed

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2023AB23      Appl.Radiat.Isot. 202, 111043 (2023)

H.M.Abdullah, A.H.Ahmed

Empirical formula for (n, f) reaction cross sections of Uranium isotopes at 1-20 MeV neutrons

NUCLEAR REACTIONS ^{232,233,234,235,236,237,238}U(n, F), E<20 MeV; analyzed EXFOR library data; deduced empirical formula using the EMPIRE 3.2.3 and TALYS 1.95 computer codes for Uranium isotopes up to the third fission plateau.

doi: 10.1016/j.apradiso.2023.111043
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2022AB14      Int.J.Mod.Phys. E31, 2250049 (2022)

H.M.Abdullah, A.H.Ahmed

Empirical formulae for (n, p) reaction cross-sections at 14-15 MeV neutrons

NUCLEAR REACTIONS ¹⁸O, ¹⁹F, ^24,25,26Mg, ²⁷Al, ^28,29Si, ³¹P, ^32,34S, ^35,37Cl, ^39,41K, ⁴⁰Ca, ⁴⁴Ca, ⁴⁵Sc, ^46,47,48Ti, ⁵¹V, ⁵⁰Cr, ^52,53,54Cr, ⁵⁵Mn, ⁵⁴Fe, ^56,57,58Fe, ⁵⁹Co, ⁵⁸Ni, ^60,61Ni, ^63,65Cu, ⁶⁴Zn, ^66,67,68Zn, ⁷¹Ga, ⁷⁰Ge, ^72,73,74Ge, ⁷⁵As, ⁷⁴Se, ^76,77,78Se, ⁸⁰Se, ⁸¹Br, ⁸²Kr, ⁸⁷Rb, ^84,86,88Sr, ⁸⁹Y, ^90,91,92Zr, ⁹⁴Zr, ^94,95,96,97Mo, ⁹⁶Ru, ¹⁰⁰Ru, ¹⁰³Rh, ^104,105,106Pd, ¹⁰⁹Ag, ¹⁰⁶Cd, ^{110,111,112,113,114}Cd, ¹¹⁵In, ¹¹²Sn, ^116,117,118Sn, ¹²²Sn, ^122,124Te, ¹³⁰Te, ¹²⁷I, ¹³¹Xe, ¹³³Cs, ¹³²Ba, ¹³⁶Ba, ¹³⁹La, ¹⁴⁰Ce, ¹⁴¹Pr, ^144,146Nd, ¹⁴⁴Sm, ¹⁵³Eu, ¹⁵⁹Tb, ¹⁵⁶Dy, ¹⁶⁰Dy, ¹⁶⁷Er, ¹⁷⁶Yb, ¹⁷⁹Hf, ¹⁸¹Ta, ¹⁸³W, ¹⁸⁶W, ¹⁸⁷Re, ^188,189Os, ^191,193Ir, ¹⁹⁷Au, ^199,201Hg, ^203,205Tl(n, p), E=14-15 MeV; analyzed EXFOR library data; deduced New empirical formulae.

doi: 10.1142/S0218301322500495
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2022AB20      Appl.Radiat.Isot. 189, 110396 (2022)

H.M.Abdullah, A.H.Ahmed

Semi-empirical formula for (n, α) reaction cross sections at 14-15 MeV neutrons

NUCLEAR REACTIONS ⁹Be, ¹¹B, ^12,13C, ¹⁴N, ^16,17,18O, ²⁰Ne, ²³Na, ²⁶Mg, ^29,30Si, ³¹P, ³⁴S, ^35,37Cl, ⁴⁰Ar, ^39,41K, ⁴⁰ca, ⁴⁴Ca, ⁴⁵Sc, ⁴⁸Ti, ⁵¹V, ⁵⁴Cr, ⁵⁵Mn, ⁵⁴Fe, ⁵⁸Fe, ⁵⁹Co, ⁵⁸Ni, ^62,64Ni, ^63,65Cu, ⁶⁴Zn, ⁶⁸Zn, ^69,71Ga, ^72,74,76Ge, ⁷⁵AS, ^78,80Se, ^79,81Br, ⁸⁶Kr, ^85,87Rb, ⁸⁹Y, ^90,92,94,96Zr, ⁹³Nb, ⁹²Mo, ¹⁰⁰Mo, ^102,104Ru, ¹⁰³Rh, ^106,108,110Pd, ^107,109Ag, ¹⁰⁶Cd, ¹¹²Cd, ¹¹⁶Cd, ^113,115In, ¹¹²Sn, ^118,120,122Sn, ^{124,126,128,130}Te, ¹²⁷I, ¹³³Cs, ¹³⁸Ba, ^138,139La, ^140,142Ce, ¹⁴¹Pr, ^{142,143,144,145,146}Nd, ¹⁴⁴Sm, ^150,152Sm, ^151,153Eu, ^156,158,160Gd, ¹⁵⁹Tb, ¹⁵⁶Dy, ^162,164Dy, ¹⁶⁵Ho, ^168,170Er, ¹⁶⁹Tm, ^172,174,176Yb, ^175,176Lu, ^178,180Hf, ¹⁸¹Ta, ^183,184W, ¹⁸⁶W, ^185,187Re, ^190,192Os, ^191,193Ir, ^194,196Pt, ¹⁹⁷Au, ^200,202Hg, ^203,205Tl, ^206,208Pb, ²⁰⁹Bi(n, α), E=14-15 MeV; analyzed available EXFOE data; calculated σ using EMPIRE 3.2.3 and TALYS 1.95 nuclear model codes; deduced formula.

doi: 10.1016/j.apradiso.2022.110396
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2022AK03      Nucl.Phys. A1021, 122419 (2022)

D.T.Akrawy, Dorin N.Poenaru, A.H.Ahmed, L.Sihver

α-decay half-lives new semi-empirical relationship including asymmetry, angular momentum and shell effects

NUCLEAR STRUCTURE N=20-180; calculated α-decay T_1/2 using a modified version of the semi-empirical formula SemFIS. Comparison with available data.

doi: 10.1016/j.nuclphysa.2022.122419
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2022AK06      Eur.Phys.J. A 58, 145 (2022)

D.T.Akrawy, A.I.Budaca, G.Saxena, A.H.Ahmed

Generalization of the screened universal α-decay law by asymmetry and angular momentum

RADIOACTIVITY ^106,108Te, ¹¹²Xe, ¹¹⁴Ba, ^146,148Sm, ^148,150,152Gd, ^150,152,154Dy, ^152,154Er, ^154,156Yb, ^156,158,160Hf, ^158,160,162W, ¹⁶⁶W, ¹⁶²Os, ¹⁶⁶Os, ¹⁷⁰Os, ¹⁷⁴Os, ^{178,180,182,184}Pt, ^188,190Pt, ^174,176Hg, ^180,182,184Hg, ¹⁸⁸Hg, ^188,190Pb, ²¹⁰Pb, ^{190,192,194,196,198,200,202,204,206,208,210,212,214,216,218}Po, ^{194,196,198,200,202}Rn, ^{206,208,210,212}Rn, ^218,220,222Rn, ^{206,208,210,212,214}Ra, ^{220,222,224,226}Ra, ²¹⁰Th, ^216,218Th, ^{222,224,226,228,230,232}Th, ^{224,226,228,230,232,234,236,238}U, ^{230,232,234,236,238,240,242,244}Pu, ^{238,240,242,244,246,248}Cm, ²⁴⁰Cf, ^{244,246,248,250,252,254}Cf, ^{248,250,252,254,256}Fm, ²⁵²No, ²⁵⁶No, ^256,258Rf, ^260,262Sg, ^264,266Hs, ²⁷⁰Hs, ²⁷⁰Ds, ^286,288Fl, ^290,292Lv, ²⁹⁴Og, ^105,107Te, ¹⁰⁹Xe, ¹⁴⁷Sm, ¹⁵¹Gd, ^151,153Dy, ^153,155Er, ^155,157Yb, ¹⁵⁷Hf, ¹⁵⁹W, ¹⁶⁵W, ¹⁶¹Os, ¹⁶⁷Os, ¹⁷³Os, ^{167,169,171,173,175,177}Pt, ¹⁸³Pt, ^{173,175,177,179}Hg, ^183,185Hg, ¹⁹¹Pb, ^187,189,191Po, ^{195,197,199,201}Po, ^{205,207,209,211,213}Po, ^{195,197,199,201,203}Rn, ^{207,209,211,213,215}Rn, ^219,221Rn, ^203,205Ra, ^{209,211,213,215,217,219,221}Ra, ^{211,213,215,217,219,221,223,225,227}Th, ^217,219U, ^223,225U, ²³⁵U, ^239,241Pu, ^{241,243,245,247}Cm, ^249,251Cf, ^{251,253,255,257}Fm, ²⁶³Rf, ^259,261Sg, ^269,271Sg, ^265,267Hs, ²⁷³Hs, ²⁶⁷Ds, ^269,271,273Ds, ²⁷⁷Ds, ²⁸¹Ds, ²⁸¹Cn, ²⁸⁵Cn, ^287,288,289Fl, ^291,293Lv, ¹¹¹I, ¹⁴⁷Eu, ^149,151Tb, ¹⁵³Tm, ¹⁶⁹Ir, ¹⁷⁷Ir, ¹⁷³Au, ^181,183,185Au, ^177,179Tl, ^187,189Bi, ^193,195Bi, ^211,213Bi, ^{197,199,201,203,205,207,209,211,213,215,217,219}At, ^{201,203,205,207,209,211,213,215,217,219,221,223}Fr, ^{209,211,213,215,217,219,221,223,225,227}Ac, ^{213,215,217,219}Pa, ^225,227Pa, ²³¹Pa, ^235,237Np, ^239,241,243Am, ^243,245Bk, ²⁴⁹Bk, ^243,245Es, ^255,257Lr, ^257,259Db, ²⁶³Db, ²⁶¹Bh, ²⁶⁷Bh, ²⁷⁵Mt, ²⁷⁹Rg, ^283,285Nh, ^287,289Mc, ²⁹³Ts, ^110,112I, ¹¹⁴Cs, ¹⁴⁸Eu, ^152,154Ho, ^154,156Tm, ¹⁵⁸Lu, ¹⁶²Ta, ^160,162Re, ¹⁶⁶Ir, ^170,172,174Au, ¹⁸²Au, ¹⁸²Tl, ^212,213,214Bi, ^{196,198,200,202,204,206,208,210,212,214,216,218}At, ^{200,202,204,206,208,210,212,214,216,218,220}Fr, ^{206,208,210,212,214,216,218,220,222,224}Ac, ²¹²Pa, ²¹⁶Pa, ²²⁶Pa, ²³⁰Pa, ²⁵⁴Es, ²⁵⁶Md, ^256,258Db, ²⁶⁰Bh, ^264,266Bh, ^270,272,274Bh, ²⁶⁸Mt, ^274,276,278Mt, ^272,274Rg, ^278,280Rg, ²⁷⁸Nh, ^284,286Nh, ^288,290Mc, ²⁹⁴Ts(α); calculated T_1/2. Comparison with available data.

doi: 10.1140/epja/s10050-022-00789-5
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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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2020AK05      Int.J.Mod.Phys. E29, 2050052 (2020)

D.T.Akrawy, A.H.Ahmed, E.Tel, A.Aydin, L.Sihver

New empirical formula for calculating (n, p) reaction cross-sections at 14.5MeV neutrons

NUCLEAR STRUCTURE Z=20-90; analyzed available data; deduced formula.

doi: 10.1142/S0218301320500524
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2020HO08      Int.J.Mod.Phys. E29, 2050008 (2020)

S.S.Hosseini, H.Hassanabadi, D.T.Akrawy, A.H.Ahmed

Theoretical studies on Alpha decay half-lives of Astatine isotopes

RADIOACTIVITY ^{191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219}At(α); calculated Q-values, T_1/2. Comparison with available data.

doi: 10.1142/S0218301320500081
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2020SA23      Phys.Rev. C 101, 064610 (2020)

K.P.Santhosh, D..Akrawy, H.Hassanabadi, Al.H.Ahmed, T.A.Jose

α-decay half-lives of lead isotopes within a modified generalized liquid drop model

RADIOACTIVITY ^{178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220}Pb(α); calculated half-lives using modified generalized liquid drop model (MGLDM) with Akrawy, Royer, AKRE, and modified RenB formulas, and experimental Q(α) values. Comparison with available experimental half-lives, and with predicted half-lives in Coulomb and proximity potential model.

doi: 10.1103/PhysRevC.101.064610
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2019AK08      Phys.Rev. C 100, 044618 (2019)

D.T.Akrawy, A.H.Ahmed

α-decay systematics for superheavy nuclei

RADIOACTIVITY ^{255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270}Db, ^{259,260,261,262,263,264,265,266,267,268,269,270,271}Sg, ^{260,261,262,263,264,265,266,267,268,269,270,271,272,273,274}Bh, ^{264,265,266,267,268,269,270,271,272,273,274,275}Hs, ^{265,266,267,268,269,270,271,272,273,274,275,276,277,278}Mt, ^{267,268,269,270,271,272,273,274,275,276,277,278,279,280,281}Ds, ^{272,273,274,275,276,277,278,279,280,281,282}Rg, ^{276,277,278,279,280,281,282,283,284,285}Cn, ^{278,279,280,281,282,283,284,285,286,287,288}Nh, ^{283,284,285,286,287,288,289,290,291,292}Fl, ^{286,287,288,289,290,291,292,293,294,295}Mc, ^{287,288,289,290,291,292,293,294,295,296}Lv, ^{291,292,293,294,295,296,297,298,299,300}Ts, ^{291,292,293,294,295,296,297,298,299,300}Og, ^{296,297,298,299,300,301,302,303,304,305}119, ^{295,296,297,298,299,300,301,302,303,304}120(α); calculated half-lives using six empirical formulas: the scaling law of Brown (SLB), the modified scaling law Brown formula (MSLB), the Yibin et al. formula (YQZR), the modified Yibin et al. formula (MYQZR), the Viola-Seaborg formula (VS), and the modified Viola-Seaborg formula (MVS), with the readjustment of the formulas using new coefficients deduced from experimental α-decay half-lives of 356 nuclei, and compared with available experimental values; deduced that the modified YQZR formula (MYQZR) agrees better with the experimental data.

doi: 10.1103/PhysRevC.100.044618
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2018AH04      Int.J.Mod.Phys. E27, 1850079 (2018)

A.H.Ahmed

Systematics of (n, p) reaction cross-sections for light element target nuclei at 14.5 MeV neutrons

COMPILATION A=19-101; analyzed available data for σ of (n, p) reactions; deduced empirical formula. Comparison with TENDL calculated values.

doi: 10.1142/S0218301318500799
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2018AK07      Int.J.Mod.Phys. E27, 1850068 (2018)

D.T.Akrawy, A.H.Ahmed

New empirical formula for α-decay calculations

doi: 10.1142/S0218301318500684
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2007AH07      Nucl.Instrum.Methods Phys.Res. A582, 287 (2007)

A.H.Ahmed, H.M.Youhana

Empirical formulae to calculate n-yields from (α, n) reactions for ⁹Be, ¹⁹F, ²³Na, and ²⁷Al light element thick targets

NUCLEAR REACTIONS ⁹Be, ¹⁹F, ²³Na, ²⁷Al(α, n), E < 10 MeV; calculated neutron yields. Compared results to available data.

doi: 10.1016/j.nima.2007.08.122
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