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NSR database version of April 11, 2024.

Search: Author = M.Ivascu

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2016BU23      Nucl.Instrum.Methods Phys.Res. A837, 1 (2016)

D.Bucurescu, I.Cata-Danil, G.Ciocan, C.Costache, D.Deleanu, R.Dima, D.Filipescu, N.Florea, D.G.Ghita, T.Glodariu, M.Ivascu, R.Lica, N.Marginean, R.Marginean, C.Mihai, A.Negret, C.R.Nita, A.Olacel, S.Pascu, T.Sava, L.Stroe, A.Serban, R.Suvaila, S.Toma, N.V.Zamfir, G.Cata-Danil, I.Gheorghe, I.O.Mitu, G.Suliman, C.A.Ur, T.Braunroth, A.Dewald, C.Fransen, A.M.Bruce, Zs.Podolyak, P.H.Regan, O.J.Roberts

The ROSPHERE γ-ray spectroscopy array

NUCLEAR REACTIONS 110Pd(13C, 4n), E=50 MeV; 82Se(13C, X)92Zr, E=42 Mev; 140Ce(13C, 3n), E=62 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, T1/2. Comparison with available data.

doi: 10.1016/j.nima.2016.08.052
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Data from this article have been entered in the XUNDL database. For more information, click here.

2014GH07      Nucl.Data Sheets 119, 245 (2014)

I.Gheorghe, D.Filipescu, T.Glodariu, D.Bucurescu, I.Cata-Danil, G.Cata-Danil, D.Deleanu, D.Ghita, M.Ivascu, R.Lica, N.Marginean, R.Marginean, C.Mihai, A.Negret, T.Sava, L.Stroe, S.Toma, O.Sima, M.Sin

Absolute Cross Sections for Proton Induced Reactions on 147, 149Sm Below the Coulomb Barrier

NUCLEAR REACTIONS 147,149Sm(p, n), (p, γ), E=3.6-8.6 MeV; measured activation Eγ, Iγ, γγ-coin using high-efficiency HPGe in close geometry; deduced γ ray strength functions; calculated σ using EMPIRE code with different strength functions. Cross sections compared also with TENDL and MENDL evaluations and (p, n) σ also with Katch data.

doi: 10.1016/j.nds.2014.08.067
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0742.

2013DE02      Phys.Rev. C 87, 014329 (2013)

D.Deleanu, D.L.Balabanski, Ts.Venkova, D.Bucurescu, N.Marginean, E.Ganioglu, Gh.Cata-Danil, L.Atanasova, I.Cata-Danil, P.Detistov, D.Filipescu, D.Ghita, T.Glodariu, M.Ivascu, R.Marginean, C.Mihai, A.Negret, S.Pascu, T.Sava, L.Stroe, G.Suliman, N.V.Zamfir

Excited states in 129I

NUCLEAR REACTIONS 124Sn(7Li, 2n), E=23 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO) at the Bucharest Tandem accelerator facility. 129I; deduced high-spin levels, J, π, multipolarities, bands, configurations. Comparison with interacting Boson-Fermion model (IBFM) and total Routhian surface (TRS) calculations. Level systematics of 123,125,127,129,131,133I.

doi: 10.1103/PhysRevC.87.014329
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Data from this article have been entered in the XUNDL database. For more information, click here.

2012BU03      Phys.Rev. C 85, 017304 (2012)

D.Bucurescu, E.Dragulescu, S.Pascu, H-F.Wirth, D.Filipescu, G.Cata-Danil, I.Cata-Danil, D.Deleanu, K.Eppinger, T.Faestermann, D.G.Ghita, T.Glodariu, R.Hertenberger, M.Ivascu, R.Krucken, N.Marginean, R.Marginean, C.Mihai, A.Negret, T.Sava, L.Stroe, K.Wimmer, N.V.Zamfir

Excited states of the 150Pm odd-odd nucleus

NUCLEAR REACTIONS 140Ce, 142Nd, 152Sm(d, α), E=25 MeV; measured E(α), I(α) with Q3D spectrograph at Munich. 150Pm, 140Pr, 138La; deduced levels. 150Nd(p, n), E=7.1 MeV; measured Eγ, Iγ, γγ-coin. 150Pm; deduced levels. Comparison with results from other reactions.

doi: 10.1103/PhysRevC.85.017304
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Data from this article have been entered in the XUNDL database. For more information, click here.

2011FI06      Phys.Rev. C 83, 064609 (2011)

D.Filipescu, V.Avrigeanu, T.Glodariu, C.Mihai, D.Bucurescu, M.Ivascu, I.Cata-Danil, L.Stroe, O.Sima, G.Cata-Danil, D.Deleanu, D.G.Ghita, N.Marginean, R.Marginean, A.Negret, S.Pascu, T.Sava, G.Suliman, N.V.Zamfir

Cross sections for α-particle induced reactions on 115, 116Sn around the Coulomb barrier

NUCLEAR REACTIONS 115Sn(α, γ)119Te, 115Sn(α, n)118Te, 116Sn(α, n)119Te, E(cm)=9.3-14.8 MeV; 48Ti(α, n)51Cr, E not given; measured Eγ, Iγ, cross sections. Comparison with previous data and predictions of statistical model calculations.

doi: 10.1103/PhysRevC.83.064609
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0652.

2011MI08      Phys.Rev. C 83, 054310 (2011)

C.Mihai, A.A.Pasternak, S.Pascu, D.Filipescu, M.Ivascu, D.Bucurescu, G.Cata-Danil, I.Cata-Danil, D.Deleanu, D.G.Ghita, T.Glodariu, N.Marginean, R.Marginean, A.Negret, T.Sava, L.Stroe, G.Suliman, N.V.Zamfir

Lifetime measurements by the Doppler-shift attenuation method in the 115Sn(α, nγ)118Te reaction

NUCLEAR REACTIONS 115Sn(α, nγ), E=15 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), Monte-Carlo Doppler shift attenuations. 118Te; deduced levels, J, π, bands, multipolarity, mixing ratios, half-lives by DSAM, B(E1), B(M1), B(E2). Comparison with predictions of interacting boson model.

doi: 10.1103/PhysRevC.83.054310
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Data from this article have been entered in the XUNDL database. For more information, click here.

2010IV02      Rom.J.Phys. 55, 1006 (2010)

M.Ivascu, I.Cata-Danil, D.Filipescu, L.Stroe, T.Glodariu, D.Bucurescu, G.Cata-Danil, D.Deleanu, D.G.Ghita, N.Marginean, R.Marginean, C.Mihai, S.Pascu, T.Sava, G.Suliman, N.V.Zamfir

Astrophysical S Factor for Proton Capture on 147Sm and 149Sm

NUCLEAR REACTIONS 147,149Sm(p, γ), E not given; measured Eγ, Iγ; deduced S-factors. Comparison with NONSMOKER calculations.

2010MA68      Eur.Phys.J. A 46, 329 (2010)

N.Marginean, D.L.Balabanski, D.Bucurescu, S.Lalkovski, L.Atanasova, G.Cata-Danil, I.Cata-Danil, J.M.Daugas, D.Deleanu, P.Detistov, G.Deyanova, D.Filipescu, G.Georgiev, D.Ghita, K.A.Gladnishki, R.Lozeva, T.Glodariu, M.Ivascu, S.Kisyov, C.Mihai, R.Marginean, A.Negret, S.Pascu, D.Radulov, T.Sava, L.Stroe, G.Suliman, N.V.Zamfir

In-beam measurements of sub-nanosecond nuclear lifetimes with a mixed array of HPGe and LaBr3:Ce detectors

NUCLEAR REACTIONS 98Mo(12C, X), E=50 MeV;197Au(α, X), E=24 MeV; measured Eγ, Iγ(θ), γγ-coin. 199Tl 367 keV state deduced T1/2, B(M1), B(E2). HPGe and LaBr3:Ce detectors, delayed γγ-coin. B(EΛ) compared with data on odd-mass Tl isotopes.

doi: 10.1140/epja/i2010-11052-7
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2010MI04      Phys.Rev. C 81, 034314 (2010)

C.Mihai, A.A.Pasternak, D.Filipescu, M.Ivascu, D.Bucurescu, G.Cata-Danil, I.Cata-Danil, D.Deleanu, D.Ghita, T.Glodariu, Yu.N.Lobach, N.Marginean, R.Marginean, A.Negret, S.Pascu, T.Sava, L.Stroe, G.Suliman, N.V.Zamfir

Side feeding patterns and nuclear lifetime determinations by the Doppler shift attenuation method in (α, nγ) reactions

NUCLEAR REACTIONS 119Sn(α, nγ)122Te, E=15 MeV; measured Eγ, Iγ, γγ-coin, angular distributions, half-lives by Doppler shift attenuation method. 122Te; deduced levels, J, π, transition strengths with Monte Carlo simulations.

doi: 10.1103/PhysRevC.81.034314
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Data from this article have been entered in the XUNDL database. For more information, click here.

2010RU07      Eur.Phys.J. A 44, 31 (2010)

C.Rusu, D.Bucurescu, N.Marginean, M.Ionescu-Bujor, A.Iordachescu, G.Cata-Danil, I.Cata-Danil, D.Deleanu, D.Filipescu, D.Ghita, T.Glodariu, M.Ivascu, C.Mihai, R.Marginean, S.Pascu, T.Sava, L.Stroe, G.Suliman, N.V.Zamfir

Isomerism of low-lying states in 86Y

NUCLEAR REACTIONS 73Ge(16O, 2np), E=57 MeV; measured Eγ, Iγ, γγ-, (neutron)γ-coin using NE213 and HPGe detectors. 86,88Y; deduced levels, J, π, μ, configurations, multipolarities, B(E1), B(E2), B(E3), B(M1), T1/2. Comparison with shell model calculations. 85Rb(3He, 2n), (3He, np), E not given; analyzed Eγ, Iγ, γ(H, θ, t). 86Sr, 86Y; deduced g-factor.

doi: 10.1140/epja/i2010-10928-8
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Data from this article have been entered in the XUNDL database. For more information, click here.

2009RU03      Nucl.Phys. A818, 1 (2009)

C.Rusu, C.A.Ur, D.Bucurescu, A.Iordachescu, N.Marginean, G.Cata-Danil, I.Cata-Danil, M.Ionescu-Bujor, M.Ivascu, D.Bazzacco, T.Kroll, S.Lenzi, S.Lunardi, R.Menegazzo, C.Rossi Alvarez, G.de Angelis, A.Gadea, D.Napoli

In-beam gamma-ray spectroscopy and shell-model description of 85, 86Y isotopes

NUCLEAR REACTIONS 76Ge(14N, 4n), E=44-54 MeV; measured σ(E); 52Cr(37Cl, X)85Y/86Y, E=115 MeV; measured Eγ, Iγ, γγ-, (neutron)γ-coin using GASP array, NE213 and HPGe detectors. 85,86Y deduced levels, J, π, configurations, multipolarities, branching fraction, T1/2. Comparison with shell model calculations.

doi: 10.1016/j.nuclphysa.2008.11.012
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Data from this article have been entered in the XUNDL database. For more information, click here.

2009ZA03      Acta Phys.Pol. B40, 503 (2009)

N.V.Zamfir, D.Bucurescu, G.Cata-Danil, M.Ivascu, N.Marginean

Correlations of Energy Ratios for Collective Nuclear Bands

2008BU22      Phys.Rev. C 78, 044322 (2008)

D.Bucurescu, N.V.Zamfir, G.Cata-Danil, M.Ivascu, N.Marginean

Universality of Mallmann correlations for nuclear band structures

NUCLEAR STRUCTURE A=42-254; analyzed Mallmann Correlation plots for bands.

doi: 10.1103/PhysRevC.78.044322
Citations: PlumX Metrics

2008CA20      Phys.Rev. C 78, 035803 (2008)

I.Cata-Danil, D.Filipescu, M.Ivascu, D.Bucurescu, N.V.Zamfir, T.Glodariu, L.Stroe, G.Cata-Danil, D.G.Ghita, C.Mihai, G.Suliman, T.Sava

Astrophysical S factor for α capture on 117Sn

NUCLEAR REACTIONS 117Sn(α, γ), (α, p), E(cm)=11.5, 14.6 MeV; measured σ; deduced astrophysical S-factors. Comparison with McFadden Optical model calculations.

doi: 10.1103/PhysRevC.78.035803
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0518.

2008GH04      Int.J.Mod.Phys. E17, 1453 (2008)

D.G.Ghita, G.Cata-Danil, D.Bucurescu, I.Cata-Danil, M.Ivascu, C.Mihai, G.Suliman, L.Stroe, T.Sava, N.V.Zamfir

124Te and the e(5) critical point symmetry

RADIOACTIVITY 124I(β+); measured Eγ, Iγ, γγ-coin, log ft. 124Te; deduced levels, J, π. Comparison to model calculations.

doi: 10.1142/S0218301308010532
Citations: PlumX Metrics

2007MI12      Phys.Rev. C 75, 044302 (2007)

C.Mihai, N.V.Zamfir, D.Bucurescu, G.Cata-Danil, I.Cata-Danil, D.G.Ghita, M.Ivascu, T.Sava, L.Stroe, G.Suliman

γ-band staggering and E(5)-type structure: 64Zn

RADIOACTIVITY 64Ga(β+), (EC) [from 54Fe(12C, np)]; measured β-delayed Eγ, Iγ, γγ-coin. 64Zn deduced levels, J, π, transition strengths. Comparisons with predictions of the E(5) critical point symmetry.

doi: 10.1103/PhysRevC.75.044302
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Data from this article have been entered in the XUNDL database. For more information, click here.

2006BU04      Eur.Phys.J. A 27, 301 (2006)

D.Bucurescu, G.Cata-Danil, I.Cata-Danil, M.Ivascu, N.Marginean, R.Marginean, L.C.Mihailescu, C.Rusu, G.Suliman

Gamma-ray spectroscopy of the nucleus 139Ce

NUCLEAR REACTIONS 139La(p, n), E=5.0, 6.0 MeV; measured Eγ, Iγ, neutron spectra, γγ-, γn-coin, DSA. 130Te(12C, 3n), E=50.5 MeV; measured Eγ, Iγ, γγ-coin. 139Ce deduced levels, J, π, T1/2, B(M1), B(E2), configurations. GASP array, comparison with shell model predictions.

doi: 10.1140/epja/i2006-10007-y
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1401. Data from this article have been entered in the XUNDL database. For more information, click here.

2005BU08      Phys.Rev. C 71, 034315 (2005)

D.Bucurescu, Zs.Podolyak, C.Rusu, G.de Angelis, Y.H.Zhang, G.Cata-Danil, I.Cata-Danil, M.Ivascu, N.Marginean, R.Marginean, L.C.Mihailescu, G.A.Suliman, P.H.Regan, W.Gelletly, S.D.Langdown, J.J.Valiente-Dobon, D.Bazzacco, S.Lunardi, C.A.Ur, M.Axiotis, A.Gadea, E.Farnea, M.Ionescu-Bujor, A.Iordachescu, Th.Kroll, T.Martinez, P.G.Bizzeti, R.Broda, N.H.Medina, B.Quintana, B.Rubio

High-spin states in the nuclei 91Y and 95Nb

NUCLEAR REACTIONS 82Se(12C, 2np), E=38 MeV; 82Se(16O, 2np), E=48 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-, (neutron)γ-coin. 12C, 16O(82Se, X)91Y/95Nb, E=470 MeV; measured Eγ, Iγ, γγ-coin. 91Y, 95Nb deduced high-spin levels, J, π, configurations. GASP array, comparison with shell model predictions, level systematics in neighboring isotones discussed.

doi: 10.1103/PhysRevC.71.034315
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Data from this article have been entered in the XUNDL database. For more information, click here.

2003BU06      Eur.Phys.J. A 16, 469 (2003)

D.Bucurescu, A.Gadea, Ghe.Cata-Danil, I.Cata-Danil, M.Ivascu, N.Marginean, C.Rusu, L.Stroe, C.A.Ur

High-spin states in the 97Tc nucleus

NUCLEAR REACTIONS 82Se(19F, 4n), E=68 MeV; measured Eγ, Iγ, γγ-, (neutron)γ-coin. 97Tc deduced high-spin levels, J, π, configurations. Comparison with shell model predictions.

doi: 10.1140/epja/i2002-10134-5
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Data from this article have been entered in the XUNDL database. For more information, click here.

2001BU01      Phys.Rev. C63, 014306 (2001)

D.Bucurescu, Ghe.Cata-Danil, I.Cata-Danil, M.Ivascu, N.Marginean, C.A.Ur

Observation of the νh11/2 Sequence in the 97Mo Nucleus

NUCLEAR REACTIONS 82Se(19F, 3np), E=68 MeV; measured Eγ, Iγ, γγ-, nγ-, (charged particle)γ-coin. 97Mo deduced high-spin levels, J, π, configurations. Comparison with model predictions.

doi: 10.1103/PhysRevC.63.014306
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Data from this article have been entered in the XUNDL database. For more information, click here.

2001BU19      Eur.Phys.J. A 10, 255 (2001)

D.Bucurescu, Gh.Cata-Danil, I.Cata-Danil, M.Ivascu, N.Marginean, C.Rusu, L.Stroe, C.A.Ur, A.Gizon, J.Gizon, B.Nyako, J.Timar, L.Zolnai, A.J.Boston, D.T.Joss, E.S.Paul, A.T.Semple, C.M.Parry

High-Spin States in the 96Tc Nucleus

NUCLEAR REACTIONS 82Se(19F, 5n), E=68 MeV; Zn(36S, xnpα)96Tc, E=130 MeV; measured Eγ, Iγ, γγ-, (neutron)γ-coin. 96Tc deduced high-spin levels, J, π, configurations. Eurogam II array.

doi: 10.1007/s100500170110
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Data from this article have been entered in the XUNDL database. For more information, click here.

2001SO02      Phys.Rev. C63, 031304 (2001)

F.Soramel, A.Guglielmetti, L.Stroe, L.Muller, R.Bonetti, G.L.Poli, F.Malerba, E.Bianchi, A.Andrighetto, J.Y.Guo, Z.C.Li, E.Maglione, F.Scarlassara, C.Signorini, Z.H.Liu, M.Ruan, M.Ivascu, C.Broude, P.Bednarczyk, L.S.Ferreira

New Strongly Deformed Proton Emitter: 117La

RADIOACTIVITY 117La(p) [from 64Zn(58Ni, p4n), E=310 MeV]; measured proton spectra, T1/2. 117La deduced ground state and isomeric level T1/2, J, π, deformation, Nilsson orbital. Comparison with Gamow-state calculations. Mass separator.

doi: 10.1103/PhysRevC.63.031304
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2000MA63      Phys.Rev. C62, 034309 (2000)

N.Marginean, D.Bucurescu, Ghe.Cata-Danil, I.Cata-Danil, M.Ivascu, C.A.Ur

High-Spin States in the 94Nb Nucleus

NUCLEAR REACTIONS 82Se(19F, 3nα), E=68 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-, (neutron)γ-coin. 94Nb deduced high-spin levels, possible J, π, configurations. Comparisons with neighboring nuclides.

doi: 10.1103/PhysRevC.62.034309
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Data from this article have been entered in the XUNDL database. For more information, click here.

1999BU05      Int.J.Mod.Phys. E8, 17 (1999)

D.Bucurescu, I.Cata-Danil, M.Ivascu, N.Marginean, L.Stroe, C.A.Ur, N.Dinu

Lifetimes and Structure of Excited States of 73As

NUCLEAR REACTIONS 73Ge(p, n), E=3.15, 4.0, 4.5 MeV; measured Eγ, Iγ, DSA. 73As levels deduced T1/2, B(M1), B(E2). Comparison with model calculations.

NUCLEAR STRUCTURE 73As; calculated levels, J, π, B(M1), B(E2). Interacting boson-fermion model.

doi: 10.1142/S0218301399000045
Citations: PlumX Metrics

1999IV08      Phys.Rev. C60, 024302 (1999)

M.Ivascu, N.Marginean, D.Bucurescu, I.Cata-Danil, C.A.Ur, Yu.N.Lobach

Lifetime Measurements in 71Ge and a New Interacting Boson-Fermion Model Interpretation

NUCLEAR REACTIONS 71Ga(p, n), E=3, 3.5 MeV; measured Eγ, Iγ, DSA. 71Ge levels deduced J, π, T1/2, B(E2), B(M1), δ. Interacting boson-fermion calculations.

doi: 10.1103/PhysRevC.60.024302
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1996BU03      J.Phys.(London) G22, 371 (1996)

D.Bucurescu, N.Marginean, G.Cata-Danil, M.Ivascu, L.Stroe, C.A.Ur

Global Phenomenology of B(E2) Values in Unique Parity Quasibands of Odd-A Nuclei

doi: 10.1088/0954-3899/22/3/010
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1996BU12      Phys.Lett. 376B, 1 (1996)

D.Bucurescu, N.V.Zamfir, G.Cata-Danil, M.Ivascu, L.Stroe, C.A.Ur, R.F.Casten

Global Correlations of Unique Parity Structures in Odd-A Nuclei

NUCLEAR STRUCTURE A=75-197; analyzed unique parity level data; deduced global correlations.

doi: 10.1016/0370-2693(96)00264-X
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1996BU39      Phys.Lett. 386B, 12 (1996)

D.Bucurescu, N.Marginean, G.Cata-Danil, M.Ivascu, L.Stroe, C.A.Ur

Global Anharmonic Vibrator Behaviour of One-Quasiparticle Structure in Odd-A Nuclei and the IBFA Model

NUCLEAR STRUCTURE Z=37-80; analyzed in-band excitation energies correlations, odd-A Rb-Hg nuclei; deduced one-quasiparticle structure global anharmonic vibrator.

doi: 10.1016/0370-2693(96)00968-9
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1996BU41      Phys.Rev. C54, 2313 (1996)

D.Bucurescu, I.Cata-Danil, G.Ilas, M.Ivascu, N.Marginean, L.Stroe, C.A.Ur

Doppler-Shift Attenuation Method Lifetime Measurements of Low-Lying States in 111In

NUCLEAR REACTIONS 111Cd(p, n), E=3.8, 4.5, 4.7 MeV; measured Eγ, Iγ, DSA. 111In levels deduced T1/2, B(λ) ratio, δ(E2/M1). Enriched target. Interacting boson-fermion model calculations.

doi: 10.1103/PhysRevC.54.2313
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1995BU15      Phys.Rev. C52, 616 (1995)

D.Bucurescu, G.Cata-Danil, G.Ilas, M.Ivascu, L.Stroe, C.A.Ur

Doppler-Shift Attentuation Method Lifetime Measurements in 115Sb and 117Sb

NUCLEAR REACTIONS 115,117Sn(p, n), E=4.4-5.9 MeV; measured Eγ, Iγ, DSA. 115,117Sb deduced levels T1/2.

doi: 10.1103/PhysRevC.52.616
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1994BU08      Phys.Rev. C49, R1759 (1994)

D.Bucurescu, G.Cata-Danil, M.Ivascu, L.Stroe, C.A.Ur

Global Systematics of Unique Parity Quasibands in Odd-A Collective Nuclei

doi: 10.1103/PhysRevC.49.R1759
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1993BU11      Phys.Rev. C48, R21 (1993)

D.Bucurescu, Gh.Cata-Danil, M.Ivascu, C.A.Ur

Band Structure Systematics and Symmetries in Even-Even Nuclei

doi: 10.1103/PhysRevC.48.R21
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1993IV01      Roum.J.Phys. 38, 379 (1993)


Spectroscopy of Neutron-Rich Nuclei by Use of Radioactive Beam

NUCLEAR STRUCTURE A ≈ 25-200; calculated fragmentation σ Coulomb part for (11Li, 9Li) reaction.

NUCLEAR REACTIONS 197Au(11Li, 9LiX), E ≈ 5-90 MeV/nucleon; calculated fragmentation σ Coulomb part.

1993SI26      Roum.J.Phys. 38, 55 (1993)

I.Silisteanu, M.Ivascu, I.Rotter

The Excitation of Collective Modes in Heavy Fragment Radioactivity

RADIOACTIVITY 221Fr, 221,222,223,224,226Ra, 225Ac(14C); 231Pa(23F); 230,232Th, 231Pa, 234,232,233U(24Ne); 233U(25Ne); 234U(26Ne); 234U, 238Pu(28Mg); 237Np, 238Pu(30Mg); 238Pu(32Si); 241Am(34Si); calculated cluster decay resonance width, decay T1/2. Collective mode excitation, microscopic, macroscopic method.

1993SI27      Roum.J.Phys. 38, 329 (1993)

I.Silisteanu, W.Scheid, M.Ivascu

Alpha and 12C Emission Energies of 114Ba

RADIOACTIVITY 114Ba(α), (12C); analyzed Qα data in other Ba, Cs, Xe, I, Te isotopes; deduced α-, 12C-decay Qα, mass excess.

1992BU11      Z.Phys. A343, 139 (1992)

D.Bucurescu, G.Cata-Danil, M.Ivascu, A.Gizon, J.Gizon, C.A.Ur

IBFM for Ba Isotopes and Chaoticity

NUCLEAR STRUCTURE 121,123,125,127,129,131Ba; analyzed predicted levels; deduced fluctuation properties reach chaotic limit. Interacting boson-fermion model.

doi: 10.1007/BF01291818
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1992DR04      Nucl.Phys. A548, 435 (1992)

E.Dragulescu, M.Ivascu, C.Petrache, D.Popescu, G.Semenescu, I.Gurgu, M.Ionescu-Bujor, A.Iordachescu, G.Pascovici, R.A.Meyer, V.Lopac, S.Brant, V.Paar, D.Vorkapic, D.Vretenar

Nuclear Structure and High-Spin States of 137Pr

NUCLEAR REACTIONS 126Te(14N, 3n), E=52-56 MeV; 122Sn(19F, 4n), E=68-76 MeV; measured Eγ, Iγ, σ(E, Eγ, θ), γγ(t), (X-ray)γ(t), γ(t). 137Pr deduced levels, J, π, δ(E2/M1), T1/2. Enriched targets. Ge(Li) detectors.

NUCLEAR STRUCTURE 137Pr; calculated levels. Interacting boson-fermion model.

doi: 10.1016/0375-9474(92)90694-F
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1992KU01      Phys.Rev. C45, 640 (1992)

J.Kumpulainen, R.Julin, J.Kantele, A.Passoja, W.H.Trzaska, E.Verho, J.Vaaramaki, D.Cutoiu, M.Ivascu

Systematic Study of Low-Spin States in Even Cd Nuclei

NUCLEAR REACTIONS 106,108,110,112,116Cd(p, p'), E=7-9 MeV; 107,109Ag(p, 2n), E=12.3-17.4 MeV; 108,110Pd(α, 2n), E=17-20MeV; measured Eγ, Iγ, γγ-, pγ-coin, γ(θ). 106,108,110,112,116Cd deduced levels, J, π, ICC. Enriched targets, Ge, Si(Li) detectors.

RADIOACTIVITY 106,108,110In(EC), (β+); measured Eγ, Eβ. 106,108,110Cd deduced levels J, π, ICC, Ge, Si(Li) detectors.

doi: 10.1103/PhysRevC.45.640
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1992PE15      Z.Phys. A344, 227 (1992)

C.M.Petrache, G.de Angelis, D.Bucurescu, M.Ivascu, D.Bazzacco, S.Lunardi

Shape Change and Shape Coexistence in 134Pr

NUCLEAR REACTIONS 119Sn(19F, 4n), E=87 MeV; measured γγ-coin. 134Pr deduced levels, J, π, rotational band structure, configuration.

doi: 10.1007/BF01291710
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1992TO06      Rev.Roum.Phys. 37, 211 (1992)

V.Topor Pop, D.B.Ion, M.Ivascu, M.Petrascu, M.Haiduc, R.Ion-Mihai, K.D.Tolstov

Search for Spontaneous Emission of Pions

RADIOACTIVITY 252Cf(SF); measured SF-decay to π-decay branching ratio upper limits.

NUCLEAR REACTIONS 235U(n, F), E=thermal; measured SF-decay to π-decay branching ratio.

1990AV01      Z.Phys. A335, 299 (1990)

M.Avrigeanu, M.Ivascu, V.Avrigeanu

Nuclear Level Densities Below 40 MeV Excitation Energy in the Mass Region A ≈ 50

NUCLEAR STRUCTURE A=50-65; analyzed resonance data; deduced level density, other parameters.

NUCLEAR REACTIONS, ICPND 52Cr, 56,54Fe, 58,60Ni(n, n'), E=2-20 MeV; calculated inelastic σ(E). 51V(α, X), (α, n), E=5.5-12 MeV; calculated reaction σ(E). 52,50Cr, 54,56Fe, 58,60Ni(n, xp), E ≈ 14.8 MeV; 50,52Cr, 54,56Fe, 58,60Ni(n, xα), E ≈ 14.5 MeV; calculated angle integrated particle emission spectra. 52,50Cr(n, 2n), E ≈ 13-20 MeV; 52Cr(n, p), (n, α), E ≈ 5-19 MeV; 53Cr(n, p), E ≈ 5-20 MeV; 61,58Ni, 54Fe(n, p), E ≈ 2-20 MeV; 54Fe(n, α), E ≈ 4-20 MeV; 58Ni, 54Fe(n, 2n), E ≈ 14-20 MeV; 56Fe(n, 2n), E=11-22 MeV; 60Ni, 56Fe(n, p), E ≈ 5-20 MeV; 58Ni(n, np), E ≈ 10-20 MeV; 62Ni(n, p), (n, α), E ≈ 6-20 MeV; calculated reaction σ(E). Statistical model.

1990CA13      Z.Phys. A335, 271 (1990)

G.Cata, D.Bucurescu, D.Cutoiu, M.Ivascu, N.V.Zamfir

Effective Boson Number Calculations in Mo and Cd Isotopes

NUCLEAR STRUCTURE 96,98,100,102,104Mo, 106,108,110,112,114,116Cd; calculated levels, B(λ), γ-branching. Interacting boson model.

1990IV01      Fiz.Elem.Chastits At.Yadra 21, 1405 (1990); Sov.J.Part.Nucl. 21, 599 (1990)

M.Ivascu, I.Silisteanu

Cluster Radioactivity Half-Lives

RADIOACTIVITY A=221-252; compiled, reviewed cluster decay T1/2 data, model results.

1990ZA04      Phys.Lett. 241B, 463 (1990)

N.V.Zamfir, D.Bucurescu, R.F.Casten, M.Ivascu

A Simple Phenomenology for 2+(γ) States

NUCLEAR STRUCTURE Z=20-100; analyzed 2+ level data.

doi: 10.1016/0370-2693(90)91852-3
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1989AV03      J.Phys.(London) G15, L241 (1989)

M.Avrigeanu, D.Bucurescu, M.Ivascu, G.Semenescu, V.Avrigeanu

On the Overlap of the Pre-Equilibrium and Direct Reaction Models

NUCLEAR REACTIONS 54,56Fe(n, n'), E=11 MeV; calculated σ. 56Fe(n, n'), E ≈ 14 MeV; calculated neutron emission spectra. Preequilibrium, direct reaction models overlap.

doi: 10.1088/0954-3899/15/11/004
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1989BA01      Z.Phys. A332, 29 (1989)

A.F.Barfield, P.von Brentano, A.Dewald, K.O.Zell, N.V.Zamfir, D.Bucurescu, M.Ivascu, O.Scholten

Evidence for the Two-Body Nature of the E1 Transition Operator in the sdf-Interacting Boson Model

NUCLEAR REACTIONS 144Sm(α, α'), E=14 MeV; measured γ-spectra following Coulomb excitation. 144Sm levels deduced B(λ). sdf-interacting boson model.

1989BU20      Phys.Lett. 229B, 321 (1989)

D.Bucurescu, G.Cata, D.Cutoiu, E.Dragulescu, M.Ivascu, N.V.Zamfir, A.Gizon, J.Gizon

Investigation of the Particle-Core Structure of Odd-Mass Nuclei in the N(p)N(n) Scheme

NUCLEAR STRUCTURE A ≈ 80-100; A ≈ 130; analyzed odd mass nuclei band structure; deduced particle-core structure. The N(p)N(n) scheme.

doi: 10.1016/0370-2693(89)90411-5
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1989PE17      Stud.Cercet.Fiz. 41, 451 (1989)

C.M.Petrache, M.Ivascu, G.Semenescu

Modelul Nilsson Rotitor si Structura de Benzi a Nucleului Impar-impar 134Pr

NUCLEAR STRUCTURE 134Pr; calculated levels. Rotating Nilsson model.

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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1989SI13      J.Phys.(London) G15, 1405 (1989)

I.Silisteanu, M.Ivascu

Estimates of the Influence of Nuclear Deformations on the Lifetimes of Heavy-Fragment Radioactivities

RADIOACTIVITY 234,232U(24Ne); 234U, 234Pu(28Mg); 241Am, 237Np(30Mg); 240,246Cm, 240Pu, 241Am(34Si); calculated fragment emission energy, T1/2; deduced deformations role.

doi: 10.1088/0954-3899/15/9/010
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1988AV04      Z.Phys. A329, 177 (1988)

M.Avrigeanu, M.Ivascu, V.Avrigeanu

Pre-Equilibrium Emission in Neutron Induced Reactions on 54,56Fe

NUCLEAR REACTIONS 54,56Fe(n, p), (n, xp), (n, α), (n, xα), (n, xn), (n, 2n), E=20 MeV; 54,56Fe(n, p), (n, α), E=14.8 MeV; calculated σ(En), σ(θp, Ep), σ(θn, En), angle integrated σ. Hybrid preequilibrium emission model.

1988BU09      J.Phys.(London) G14, L175 (1988)

D.Bucurescu, G.Cata, M.Ivascu, N.V.Zamfir, C.F.Liang, P.Paris

Collectivity of the Neutron-Deficient Odd Yttrium Isotopes

NUCLEAR STRUCTURE 79,81,85,83Y; calculated levels. Multi-shell, interacting boson fermion model.

1988IO02      Rev.Roum.Phys. 33, 239 (1988)

D.B.Ion, R.Ion-Mihai, M.Ivascu

Theoretical Predictions for Nuclear Pionic Radioactivity

RADIOACTIVITY 234,236U, 240,242Pu, 244,246Cm, 250,252Cf, 256,258Fm, 260Rf, 264Hs(SF); calculated pion decay T1/2. Pion fissionability parameter.

1988IO03      Rev.Roum.Phys. 33, 109 (1988)

D.B.Ion, R.Ion-Mihai, M.Ivascu

Spontaneous Lambda0 Emission as a Natural Strange Radioactivity

RADIOACTIVITY 256,257Fm, 250,252Cf, 242,244Cm, 240,242Pu(SF); calculated lambda-emission width.

NUCLEAR REACTIONS 233,235U(n, F), E=thermal; calculated lambda-emission width following fission.

1988IO04      Rev.Roum.Phys. 33, 1071 (1988)

D.B.Ion, R.Ion-Mihai, M.Ivascu

Predictions for Pionic Radioactivity of Even-Even Parent Nuclei

RADIOACTIVITY 236,238U, 242,244Pu, 248,250Cm, 252,254,256Cf, 244,248,256,258Fm, 258No, 260,262Rf, 264Hs(SF); calculated pion decay Γ(π)/Γ(SF).

1988IO05      Rev.Roum.Phys. 33, 1075 (1988)

D.B.Ion, R.Ion-Mihai, M.Ivascu

Predictions for Pion Radioactivity of Heavy Nuclei with A-Odd

RADIOACTIVITY 233,235U, 237Np, 239Pu, 241,243Am, 249Bk, 249Cf, 253,255Es, 257,259Fm, 259,257Md, 259Lr, 259Sg, 261Bh(SF); calculated pion decay Γ(π)/Γ(SF).

1988IV02      Nucl.Phys. A485, 93 (1988)

M.Ivascu, I.Silisteanu

The Microscopic Approach to the Rates of Radioactive Decay by Emission of Heavy Clusters

RADIOACTIVITY 222,223,224,226Ra, 231Pa, 232,233U(α), (12C), (24Ne); calculated α-, cluster-decay T1/2, ratios, spectroscopic factor, Γ ratios. Microscopic model.

doi: 10.1016/0375-9474(88)90524-6
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1988IV04      Rev.Roum.Phys. 33, 105 (1988)

M.Ivascu, M.Brehui, M.Haiduc, D.B.Ion, R.Ion-Mihai, C.Petrascu, M.Petrascu, K.Tolstov, V.Topor

Search for Pion Emission in Thermal Neutron Induced Fission of 235U

NUCLEAR REACTIONS 235U(n, F), E=thermal; measured charged pion emission (Γπ/ΓF) upper limit following fission.

1987AV07      Rev.Roum.Phys. 32, 837 (1987)

M.Avrigeanu, V.Avrigeanu, G.Cata, M.Ivascu

EDBW Model for the E1 Gamma-Ray Strength Function in the Mass Region 50 ≤ A ≤ 90

NUCLEAR STRUCTURE A=40-240; analyzed GDR data; deduced E1 strength function nuclear deformation dependence for A=50-90.

1987DR12      Rev.Roum.Phys. 32, 485 (1987)

E.Dragulescu, M.Ivascu, M.Ionescu-Bujor, A.Iordachescu, C.Petrache, D.Popescu, G.Pascovici, G.Semenescu, M.Duma, I.Gurgu, F.Baciu, R.A.Meyer, V.Paar, S.Brant, D.Vorkapic, D.Vretenar, H.Ajazaj

High-Spin Spectroscopy of Pr Nuclei

NUCLEAR REACTIONS 118,119,120,122,124Sn, 121,123Sb, 125,126,128,130Te, 136,138Ce(19F, X), (16O, X), (14N, X), E not given; measured Eγ, Iγ, γ(θ), γγ(t), X-ray(γ)(t). 133,134,135,136,137,138,139Pr deduced levels, J, π, band structure, γ-branching. In-beam γ-ray spectroscopy. Interacting boson model calculations.

1987DR13      Rev.Roum.Phys. 32, 743 (1987)

E.Dragulescu, M.Ivascu, D.Popescu, G.Semenescu, I.Gurgu, L.Marinescu, F.Baciu

Levels in 134,135,136Ba Excited by the (9Be, xnγ) Reactions

NUCLEAR REACTIONS 128,130Te(9Be, xn), E=30-37 MeV; measured σ(E, Eγ), γ-spectra. 134,135,136Ba deduced levels, band characteristics.

1987DR14      Rev.Roum.Phys. 32, 947 (1987)

E.Dragulescu, M.Ivascu, C.Petrache, D.Popescu, G.Semenescu, M.Duma, I.Gurgu, F.Baciu, S.Brant, V.Paar, D.Vorkapic

Shape Transition in Pr Nuclei

NUCLEAR REACTIONS 118,119,120Sn(19F, xn), E=72-76 MeV; 125Te(14N, 4n), E=52-58 MeV; measured γγ(t), γ(X-ray)(t), σ(Eγ, E). 133,135Pr deduced levels, J, π.

1987IO03      Rev.Roum.Phys. 32, 299 (1987)

D.B.Ion, R.Ion-Mihai, M.Ivascu

Experimental Evidence for Spontaneous Pion Emission from Ground State of 252Cf

RADIOACTIVITY 252Cf(SF); measured light charged particle spectra following (SF)-decay; deduced evidence for natural π-, μ-decay, Γ(π+μ)/Γ(SF). ΔE-E method.

1987IV01      Rev.Roum.Phys. 32, 549 (1987)

M.Ivascu, A.Sandulescu, I.Silisteanu

On the Rates of Radioactive Decays by Emission of Heavy Clusters

RADIOACTIVITY 222,223,224,226Ra(14C), 231Pa, 232,233U(24Ne); calculated T1/2, branching ratios, one-body resonance widths, cluster spectroscopic factors. Microscopic-macroscopic method.

1987IV03      Rev.Roum.Phys. 32, 697 (1987)

M.Ivascu, V.Avrigeanu, M.Avrigeanu

Nuclear Level Densities in the Mass Range 40 < A < 65

NUCLEAR STRUCTURE A=40-70; calculated level densities. Back shifted Fermi gas model.

1987IV04      Rev.Roum.Phys. 32, 713 (1987)

M.Ivascu, M.Avrigeanu, V.Avrigeanu

A Geometry Dependent Hybrid Pre-Equilibrium Emission Model with Conservation of Angular Momentum

NUCLEAR REACTIONS 46,48Ti(n, np), E=15 MeV; calculated angle integrated σ. Geometry dependent hybrid preequilibrium model.

1987IV05      Rev.Roum.Phys. 32, 937 (1987)

M.Ivascu, D.B.Ion, D.Bucurescu, G.Cata, D.Cutoiu, D.Galeriu, R.Ion-Mihai, N.V.Zamfir

Search for Spontaneous Emission of Mesons from 252Cf

RADIOACTIVITY 252Cf(SF); measured (light particle)(heavy particle)-coin; deduced meson decay branching upper limits.

1987PO08      Rev.Roum.Phys. 32, 283 (1987)

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

Superasymmetric Fission Model for Deformed Nuclei

RADIOACTIVITY 221,222,223,224,226Ra, 221Fr, 225Ac(14C); 230,232Th, 232,233U, 231Pa(24Ne); 237Np(32Si); 241Am(34Si); calculated log T1/2. 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 T1/2 vs fragment mass. Analytical superasymmetric fission model.

1986BU10      Z.Phys. A324, 387 (1986); Erratum Z.Phys. A327, 241 (1987)

D.Bucurescu, G.Cata, D.Cutoiu, G.Constantinescu, M.Ivascu, N.V.Zamfir

An Extended IBA Consistent-Q Formalism Applied to Ru and Pd Isotopes

NUCLEAR STRUCTURE 98,100,102,104,106,108Ru, 102,104,106,108,110,112Pd; calculated levels, B(E2). Interacting boson approximation.

1986GA04      J.Phys.(London) G12, 329 (1986)

D.Galeriu, D.Bucurescu, M.Ivascu

Nuclear Deformations in the A ≈ 80-100 Region

NUCLEAR STRUCTURE 77,79,81,82,83,84,85,86,90,91,92,93,94,95,96,97,98,99Sr, 99,100,101,102,103,104,105,106,107,108,109,110,111,112Pd; calculated mass excess errors. 92,98,100Zr; calculated mass coefficient vs deformation. 92,93,94,95,96,97,98,99,100Zr; calculated stiffness coefficient. 92,94,96,98Zr; calculated 2+ levels. 92,94,96,98,100,102,104,106Mo; calculated dynamic deformation vs N. 81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102Zr, 93,95,97,99,101Sr, 97,99,101Mo; calculated Fermi energy nucleon number dependence. 100,102,106Mo, 96,98,100,101,102,103Zr, 76,77,78,96,98Sr, 72,73,74,75,76,78Kr; calculated potential energy surfaces. Strutinsky approach, Nilsson type potential.

doi: 10.1088/0305-4616/12/4/006
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1986IO02      Rev.Roum.Phys. 31, 551 (1986)

D.B.Ion, R.Ion-Mihai, M.Ivascu

Experimental Evidence for Spontaneous Pion Emission from the Ground State of Transuranium Nuclides

NUCLEAR REACTIONS 235U(n, F), E=thermal; analyzed light particle emission data following fission; deduced π, μ emissions.

RADIOACTIVITY 252Cf, 259Md(SF); analyzed light particle emission data; deduced π, μ emissions.

1986IO03      Ann.Phys.(New York) 171, 237 (1986)

D.B.Ion, M.Ivascu, R.Ion-Mihai

Spontaneous Pion Emission as a New Natural Radioactivity

RADIOACTIVITY Z=92-106; calculated pionic decay Q, decay widths, statistical factors, energy distributions; deduced pionic radioactivity, possible mechanisms. Nuclear masses input.

doi: 10.1016/0003-4916(86)90001-1
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1986IV02      Radiat.Eff. 95, 207 (1986)

M.Ivascu, M.Avrigeanu, V.Avrigeanu

Preequilibrium and Statistical Model Calculations for Neutron Activation Cross Sections on Titanium Isotopes

NUCLEAR REACTIONS 46,47,48,49,50Ti(n, p), (n, n'p), (n, 2n), E=threshold-20 MeV; calculated σ(E). Hauser-Feshbach, optical model, preequilibrium emission.

doi: 10.1080/00337578608208697
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1986IV03      Radiat.Eff. 95, 211 (1986)

M.Ivascu, M.Avrigeanu, V.Avrigeanu

Level Density Shell Effects in Neutron Induced Reactions on Molybdenum Isotopes

NUCLEAR REACTIONS 92,94,95,96,97,98,100Mo(n, p), (n, n'p), (n, 2n), E=threshold-20 MeV; calculated σ(En), binding energies; deduced isotopic effects. Preequilibrium, statistical models.

doi: 10.1080/00337578608208698
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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, T1/2, 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, 232,234,233,235U, 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 T1/2, branching ratios. Analytical superasymmetric fission model.

1985BU10      Rev.Roum.Phys. 30, 181 (1985)

D.Bucurescu, G.Cata, G.Constantinescu, D.Cutoiu, M.Ivascu, N.V.Zamfir

Interacting Boson and Interacting Boson-Fermion Calculations in the A ≈ 100 Transitional Region

NUCLEAR STRUCTURE 96,98,100,102,104,106Ru, 98,100,102,104,106,108Pd; calculated levels, band structure, B(E2), quadrupole moment. 97,99,101,103,105Rh; calculated levels, model parameter dependence. Interacting boson model.

1985BU11      Nucl.Phys. A443, 217 (1985)

D.Bucurescu, G.Cata, D.Cutoiu, G.Constantinescu, M.Ivascu, N.V.Zamfir

IBFA Description of High-Spin Positive-Parity States in Rh Isotopes

NUCLEAR STRUCTURE 96,98,100,102,104,106Ru, 99Rh; calculated levels, B(E2). 97,101,103,105,107Ru; calculated levels; deduced model parameters. Interacting boson-fermion approximation.

NUCLEAR REACTIONS 88Sr(14N, 3n), E=54 MeV; measured Eγ, Iγ, recoil. 99Rh deduced levels, T1/2, B(E2). Interacting boson-fermion approximation model comparison.

doi: 10.1016/0375-9474(85)90261-1
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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, T1/2. 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, 222,223,224,226Ra(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 T1/2, (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, 223,224,225,227Ac, 227,228,229,230,232Th, 231Pa, 232,233,234,235,238U, 236,237Np, 236,239,240,242Pu, 243Am, 239,251,252Cf; calculated heavy ion emission T1/2, 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, 220,221,225,226Th, 222,223,225Pa, 221Ra, 232,236Pu, 233Am, 235Np, 236Pu(SF); calculated multiple, single heavy ion emission T1/2 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, 180,182,183,184W, 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, T1/2. Analytical superasymmetric fission model.

doi: 10.1103/PhysRevC.32.2198
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1984BU26      J.Phys.(London) G10, 1189 (1984)

D.Bucurescu, G.Constantinescu, D.Cutoiu, M.Ivascu, N.V.Zamfir, A.A.Haliem

High-Spin States in 86Y

NUCLEAR REACTIONS, ICPND 76Ge(14N, 4n), E=38-56 MeV; 73Ge(16O, 2np), E=48-60 MeV; measured Eγ, Iγ, σ(E), σ(Eγ, θγ), (charged-particle)γ-, γγ-coin. 86Y deduced levels, J, π. Ge(Li) detectors, enriched targets.

doi: 10.1088/0305-4616/10/9/009
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1984DR03      Nucl.Phys. A419, 148 (1984)

E.Dragulescu, M.Ivascu, R.Mihu, D.Popescu, G.Semenescu, V.Paar, D.Vretenar

Coulomb Excitation of Levels in 143Nd and 145Nd

NUCLEAR REACTIONS 143,145Nd(16O, 16O'), E=35-45 MeV; 143,145Nd(α, α'), E=9.7-12.2 MeV; measured Coulomb excitation, Eγ, Iγ, σ(Eγ, θγ). 143,145Nd deduced levels, decay, J, π, δ, B(E2). Enriched targets.

doi: 10.1016/0375-9474(84)90290-2
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1984DR05      J.Phys.(London) G10, 1099 (1984)

E.Dragulescu, M.Ivascu, R.Mihu, D.Popescu, G.Semenescu, A.Velenik, V.Paar

Coulomb Excitation of Levels in 135Ba and 137Ba

NUCLEAR REACTIONS 135,137Ba(α, α'), E=9.6-12.2 MeV; 135,137Ba(16O, 16O'), E=35-45 MeV; measured Eγ, Iγ, γ(θ), σ(Eγ, E) following Coulomb excitation. 135Ba(14N, 14N'), E=40 MeV; measured Eγ, Iγ, γ(θ) following Coulomb excitation. 135,137Ba deduced levels, J, π, δ, γ-branching, B(E2). Enriched targets, Ge(Li) detectors, Compton suppression spectrometer.

doi: 10.1088/0305-4616/10/8/015
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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, 232,233,234,235,238U, 237Np, 252Cf(SF); calculated cluster SF decay T1/2, (T1/2(SF)/T1/2(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, 219,221,218,227Th, 217,216Ra, 215,216Fr, 212,213Po, 215Rn; calculated SF decay T1/2 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, 232,233,234,235,238U, 237Np, 252Cf; calculated α-decay to cluster emission T1/2 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 106,108,107,109,110Te, 110,112,111,113Xe, 110,111,112,113I, 114Cs(α); N=55-100; Te, Xe, I, Cs, Ba, La, Ce, Pr, Nd, Pm(α); calculated T1/2 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 T1/2. Experimental mass tabulation input.

1983BU09      Nucl.Phys. A401, 22 (1983)

D.Bucurescu, G.Cata, D.Cutoiu, G.Constantinescu, M.Ivascu, N.V.Zamfir

Description of the Neutron Deficient Sr and Zr Isotopes in the Interacting Boson Model

NUCLEAR STRUCTURE 78,80,82,84Sr; calculated levels, potential energy surfaces, backbending plots, B(E2) ratios. 80,82,84,86Zr; calculated levels, backbending plots, B(E2) ratios. 85Y, 83,81Sr; calculated levels, B(E2). Interacting boson model.

doi: 10.1016/0375-9474(83)90334-2
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1983DR10      Rev.Roum.Phys. 28, 13 (1983)

E.Dragulescu, M.Ivascu, R.Mihu, D.Popescu, G.Semenescu

Levels of 141Nd Populated by 141Pr(p, nγ)141Nd Reaction

NUCLEAR REACTIONS 141Pr(p, nγ), E=3.85-5.35 MeV; measured Eγ, Iγ, σ(Eγ), γγ-coin. 141Nd deduced levels, γ-branching, J, π. Unified model, intermediate coupling approach.

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 T1/2. 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 T1/2, 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 T1/2, interaction, fission barriers, shell effects. Fission approach, Myers-Swiatecki liquid drop model.

1981BU02      J.Phys.(London) G7, 399 (1981)

D.Bucurescu, G.Constantinescu, M.Ivascu, N.V.Zamfir, M.Avrigeanu

Recoil-Distance Measurements of the Lifetimes of High-Spin States in 83Sr and 85Sr

NUCLEAR REACTIONS 74,76Ge(12C, 3n), E=40-45 MeV; measured γ(θ), DSA, recoil. 83,85Sr deduced levels, J, π, γ-branching, δ, T1/2, γ-multipolarity, B(M1), B(E2). Enriched targets, Ge(Li)detector. Asymmetric rotor model, variable moment of inertia.

doi: 10.1088/0305-4616/7/3/015
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1981BU05      J.Phys.(London) G7, 667 (1981)

D.Bucurescu, G.Constantinescu, M.Ivascu, N.V.Zamfir, M.Avrigeanu, D.Cutoiu

Evidence for a g9/2 Decoupled Band in 85Y

NUCLEAR REACTIONS 74Ge(14N, 3n), E=40-52 MeV; 72Ge(16O, 2np), E=45-64 MeV; 73Ge(16O, 3np), E=48-60 MeV; measured σ(Eγ, E), σ(Eγ, θ), pγ-, γγ-coin. 85Y deduced levels, J, π. Enriched targets, Ge(Li) detector.

doi: 10.1088/0305-4616/7/5/011
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1981BU06      J.Phys.(London) G7, L123 (1981)

D.Bucurescu, G.Constantinescu, D.Cutoiu, M.Ivascu, N.V.Zamfir

Possible Shape Phase Transition in the Heavy Kr Isotopes

NUCLEAR STRUCTURE 70,72,74,76,78,80,82,84,86,88,90,92,94,96Kr; calculated potential energy surfaces; deduced phase transition effects between N=58 and 60. Mascroscopic approach, shell, pairing effect microscopic corrections.

doi: 10.1088/0305-4616/7/1/016
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