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Search: Author = O.Dumitrescu

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2001MI20      Acta Phys.Pol. B32, 2231 (2001)

D.Mihailescu, D.Radu, O.Dumitrescu

Neutral Currents in ¹⁴N-Nucleus

NUCLEAR STRUCTURE ¹⁴N; calculated parity non-conserving matrix elements, γ-ray polarization of excited state decay.

NUCLEAR REACTIONS ¹³C(polarized p, p), E^* ≈ 9 MeV; calculated longitudinal and transverse analyzing powers.

2000MI15      J.Phys.(London) G26, 811 (2000)

D.Mihailescu, S.Popescu, I.Bulboaca, O.Dumitrescu

Parity Nonconservation in ⁶Li

NUCLEAR STRUCTURE ⁶Li; calculated parity and isospin forbidden alpha decay t_1/2 of the 3.56 MeV excited state. Comparison with other calculations and experimental upper limit.

doi: 10.1088/0954-3899/26/6/305
Citations: PlumX Metrics

2000MI37      Aust.J.Phys. 53, 751 (2000)

D.Mihailescu, D.Radu, O.Dumitrescu

Neutral Currents in the ¹⁶O Nucleus

NUCLEAR REACTIONS ¹⁵N(polarized p, α), E ≈ 4.35 MeV; calculated parity-nonconserving analyzing powers. ¹⁶O deduced parity-mixed doublet decay features.

NUCLEAR STRUCTURE ¹⁶O; calculated parity-nonconserving matrix elements.

2000PO11      Phys.Rev. C61, 065501 (2000)

S.Popescu, O.Dumitrescu, J.P.Vary

Neutral Current Effects in ¹⁶O

NUCLEAR STRUCTURE ¹⁶O; calculated transition polarization, asymmetry, sensitivity to parity nonconserving effects.

doi: 10.1103/PhysRevC.61.065501
Citations: PlumX Metrics

1998MI31      Roum.J.Phys. 43, 41 (1998)

D.Mihailescu, S.Popescu, I.Bulboaca, O.Dumitrescu

Neutral Currents in ⁶Li

NUCLEAR STRUCTURE ⁶Li; calculated parity-nonconserving α-decay width.

1997BO16      Phys.Lett. 396B, 15 (1997)

R.Bonetti, I.Bulboaca, F.Carstoiu, O.Dumitrescu

Hindrance Factors in ALpha and Cluster Radioactivity of ²³³U

RADIOACTIVITY ²³³U(α), (²⁴Ne), (²⁸Mg); calculated weak favored(in some cases), unfavored transition hindrance factors, branching ratios.

doi: 10.1016/S0370-2693(97)00118-4
Citations: PlumX Metrics

1997PO23      Roum.J.Phys. 42, 475 (1997)

S.Popescu, O.Dumitrescu

Parity Nonconservation in ¹⁹Ne Atomic Nucleus

NUCLEAR STRUCTURE ¹⁹Ne; calculated parity non-conserving matrix elements, isocalar, isovector contributions. Proposal for γ asymmetry measurement.

1996DU21      Fiz.Elem.Chastits At.Yadra 27, 1543 (1996); Phys.Part.Nucl. 27, 625 (1996)

O.Dumitrescu

Neutral Currents in Low-Energy Nuclear-Physics Processes

NUCLEAR STRUCTURE ¹⁰B, ^13,14,15N, ^15,16,17O, ^18,19F, ^20,21Ne, ²³Na, ³⁰P, ³⁰Si, ³⁶Cl, ³⁶Ar, ¹⁸⁰Hf, ²²³Th; analyzed mixed-parity doublets. Shell-model calculations. Parity nonconservation induced by weak hadron-hadron interactions.

NUCLEAR REACTIONS ¹⁵N(polarized p, α), E ≈ 0.9, 4.35 MeV; calculated longitudinal, transverse analyzing power. Parity nonconservation induced by weak hadron-hadron interactions.

1995DU05      Phys.Rev. C51, 3264 (1995)

O.Dumitrescu, C.Cioaca

Fine Structure in the Cluster Decays of the Translead Nuclei

RADIOACTIVITY ²⁵⁵Fm(α), (²⁰O); ²²³Ra(¹⁴C); ²²⁹Th(²⁰O); calculated hindrance factors. Enlarged superfluid model.

doi: 10.1103/PhysRevC.51.3264
Citations: PlumX Metrics

1994DU03      Phys.Rev. C49, 1466 (1994)

O.Dumitrescu

Fine Structure of Cluster Decays

RADIOACTIVITY ²⁴¹Am, ²⁴³Cm(α); calculated α-decay hindrance factors. ²²³Ra(¹⁴C); ²⁴³Cm(³⁴Si); calculated cluster decay hindrance factors. One-level R-matrix approach.

doi: 10.1103/PhysRevC.49.1466
Citations: PlumX Metrics

1994MI27      Roum.J.Phys. 39, 223 (1994)

D.Mihailescu, H.Comisel, O.Dumitrescu

Neutral Currents in ¹⁶O Investigated Via ¹⁵N(p(pol), α)¹²C Resonance Reaction

NUCLEAR REACTIONS ¹⁵N(polarized p, α), E ≈ 4.25-4.45 MeV; calculated longitudinal, irregular transverse analyzing power vs θ. ¹⁶O deduced isovector parity mixing doublet features. Shell model, neutral currents, other data analyses as input.

1993DE37      Nucl.Phys. A565, 818 (1993)

B.Desplanques, O.Dumitrescu

Parity Nonconservation in the Transition (1/2)^-, T = 1/2(2.789 MeV) → (3/2)⁺, T = 1/2(g.s.) in ²¹Ne: An isovector case as in the ¹⁸F nucleus ( Question )

NUCLEAR STRUCTURE ²¹Ne; calculated parity mixed doublet transition matrix element; deduced mainly isovector nature.

doi: 10.1016/0375-9474(93)90006-J
Citations: PlumX Metrics

1993DU01      Nucl.Phys. A552, 306 (1993)

O.Dumitrescu, G.Clausnitzer

Search for Neutral Currents in ³⁰P and ²³Na Nuclei

NUCLEAR STRUCTURE ³⁰P, ²³Na; calculated parity forbidden (M1+E2) transition γ CP. Strong, weak interaction models.

doi: 10.1016/0375-9474(93)90495-J
Citations: PlumX Metrics

1993GR05      Phys.Rev. C47, 2666 (1993)

M.Grigorescu, B.A.Brown, O.Dumitrescu

Alpha Decay of ¹⁶O Excited States

NUCLEAR STRUCTURE ¹⁶O; calculated levels, α-decay widths. Shell model, folding model potential wave functions, one-level R-matrix approach.

doi: 10.1103/PhysRevC.47.2666
Citations: PlumX Metrics

1992DU04      Nuovo Cim. 105A, 901 (1992)

O.Dumitrescu, G.Stratan

Parity Mixing in ³⁶Cl Investigated via Circular Polarization of the 1.95105 MeV Gamma-Rays

NUCLEAR STRUCTURE ³⁶Cl; calculated parity forbidden transition γ CP. Strong, weak interaction models.

doi: 10.1007/BF02730831
Citations: PlumX Metrics

1991BR28      Rev.Roum.Phys. 36, 135 (1991)

I.Brandus, F.Carstoiu, O.Dumitrescu, M.Horoi, F.Nichitiu

Multistep Direct and Compound Nuclear Reactions with Polarized Projectiles

NUCLEAR REACTIONS ¹³C, ¹⁵N(p, p), (polarized p, p), E ≤ 1.17 MeV; calculated σ(θ), analyzing power vs E. Double-folding interaction potential, multi-step direct compound nuclear reactions.

1991DU04      Nucl.Phys. A535, 94 (1991)

O.Dumitrescu

Parity and Isospin Nonconservation in ¹⁶O Investigated via ¹⁵N(p(pol), α)¹²C Resonance Reaction

NUCLEAR REACTIONS ¹⁵N(polarized p, α), E=0.898 MeV; calculated longitudinal asymmetry. ¹⁶O level deduced parity nonconserving longitudinal, transverse analyzing powers, α-decay width.

doi: 10.1016/0375-9474(91)90517-A
Citations: PlumX Metrics

1991KN03      Phys.Rev. C44, 491 (1991)

N.Kniest, M.Horoi, O.Dumitrescu, G.Clausnitzer

Isovector Parity Mixing in ¹⁶O Investigated via the ¹⁵N(p(pol), α₀)¹²C Resonance Reaction

NUCLEAR REACTIONS ¹⁵N(polarized p, α), E=resonance; analyzed data. ¹⁶O level deduced isovector parity mixing, α-decay features.

doi: 10.1103/PhysRevC.44.491
Citations: PlumX Metrics

1990DU01      Phys.Rev. C41, 1462 (1990)

O.Dumitrescu, M.Horoi, F.Carstoiu, G.Stratan

Parity Nonconserving Asymmetries in Resonance Scattering and Nuclear Reactions Induced by Polarized Protons

NUCLEAR REACTIONS ¹³C(polarized p, p), E=1.13-1.17 MeV; ¹⁵N(polarized p, p), E=0.6-0.8 MeV; calculated σ(E), analyzing power vs E. ¹⁵N(p, α), E not given; calculated parity nonconserving analyzing power.

doi: 10.1103/PhysRevC.41.1462
Citations: PlumX Metrics

1990DU03      Nuovo Cim. 103A, 653 (1990)

O.Dumitrescu, M.Horoi

An Enlarged Superfluid Model of Atomic Nucleus

NUCLEAR STRUCTURE ^{197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214}Pb; calculated isotope shifts, rms charge radii. ¹⁵²Sm; calculated levels. Enlarged superfluid model.

doi: 10.1007/BF02789018
Citations: PlumX Metrics

1987AP02      Nucl.Phys. A470, 64 (1987)

M.Apostol, I.Bulboaca, F.Carstoiu, O.Dumitrescu, M.Horoi

Alpha-Like Four Nucleon Correlations in Superfluid Phases of Atomic Nuclei

NUCLEAR STRUCTURE ¹⁵²Nd, ¹⁵⁶Sm, ¹⁶⁰Gd, ¹⁶⁴Dy, ¹⁶⁸Er, ¹⁷⁶Hf, ¹⁸⁰W, ¹⁸⁴Os, ²⁴⁰Pu, ²⁴⁶Cf; calculated coupling strength constants, gap parameters, mass differences, enhancement factors. BCS approach.

doi: 10.1016/0375-9474(87)90120-5
Citations: PlumX Metrics

1987AP03      Europhys.Lett. 4, 197 (1987)

M.Apostol, I.Bulboaca, F.Carstoiu, O.Dumitrescu, M.Horoi

Dynamical Alpha-Type Correlations in Deformed Superfluid Nuclei

NUCLEAR STRUCTURE ¹⁵²Nd, ¹⁶⁰Gd, ¹⁶⁸Er, ¹⁷⁶Hf, ¹⁸⁴Os; calculated superfluidity enhancement factors, α-type correlation coefficients.

doi: 10.1209/0295-5075/4/2/011
Citations: PlumX Metrics

1987AP04      Rev.Roum.Phys. 32, 533 (1987)

M.Apostol, I.Bulboaca, F.Carstoiu, O.Dumitrescu, M.Horoi

Alpha-Like Four Nucleon Correlations in Superfluid Phases of Atomic Nuclei

NUCLEAR STRUCTURE ¹⁵²Nd, ¹⁵⁶Sm, ¹⁶⁰Gd, ¹⁶⁴Dy, ¹⁶⁸Er, ¹⁷⁶Hf, ¹⁸⁰W, ¹⁸⁴Os, ²⁴⁰Pu, ²⁴⁶Cf; calculated pairing, gap parameters, mass differences, superfluid enhancement factors. Four-nucleon correlations, BCS.

1986AP01      Rev.Roum.Phys. 31, 657 (1986)

M.Apostol, I.Bulboaca, F.Carstoiu, O.Dumitrescu, M.Horoi

α-Like Superfluid Phase in Heavy Nuclei

NUCLEAR STRUCTURE ¹³²Sn, ¹³⁶Te, ¹⁴⁰Xe, ¹⁴⁴Ba, ¹⁴⁸Ce, ¹⁵²Nd, ¹⁵⁶Sm, ¹⁶⁰Gd, ¹⁶⁴Dy, ¹⁶⁸Er, ¹⁷²Yb, ¹⁷⁶Hf, ¹⁸⁰W, ¹⁸⁴Os, ¹⁸⁸Pt, ¹⁹²Hg, ¹⁹⁶Pb, ²⁰⁰Po, ²⁰⁴Rn; calculated α-aggregate separation energies, average mass defects, proton, neutron and α-like superfluidities. Superfluidity model.

1986CA22      Rev.Roum.Phys. 31, 553 (1986)

F.Carstoiu, O.Dumitrescu, G.Stratan

On Parity Violation in Alpha Decay of Deformed Nuclei

NUCLEAR STRUCTURE ²⁰Ne; calculated parity-nonconserving α decay widths. Fermi liquid, quasiparticle RPA models.

1985CA25      Nucl.Phys. A441, 221 (1985)

F.Carstoiu, O.Dumitrescu, G.Stratan, M.Braic

On Parity Violation in α-Decay

NUCLEAR STRUCTURE ¹⁶O; calculated regular, parity nonconserving α-widths. Shell model, Pauli corrections.

doi: 10.1016/0375-9474(85)90031-4
Citations: PlumX Metrics

1982BU19      Nuovo Cim. 70A, 142 (1982)

A.Bulgac, S.Holan, F.Carstoiu, O.Dumitrescu

Fermi-Liquid Model of Alpha-Decay

RADIOACTIVITY ²¹⁰Bi, ²¹⁰Po, ^202,206,210Rn, ^{208,210,212,214}Ra; calculated α-decay width. Fermi liquid model, Pauli principle, new universal constant.

doi: 10.1007/BF02902943
Citations: PlumX Metrics

1982BU26      Rev.Roum.Phys. 27, 331 (1982)

A.Bulgac, F.Carstoiu, O.Dumitrescu

Interionic Double Folding Yukawa Interaction Potential

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁶O, ¹⁶O), (¹¹⁶Sn, ¹¹⁶Sn), (α, α), ¹¹⁶Sn(⁶⁶Zn, ⁶⁶Zn), E not given; calculated nucleus-nucleus double folding potential characteristics. Semi-analytical form.

1982CA11      Nuovo Cim. 70A, 38 (1982)

F.Carstoiu, O.Dumitrescu, L.Fonda

Semi-Classical Description of Coherent Rotational States with Inclusion of Nuclear Interactions

NUCLEAR REACTIONS ²³⁸U(⁴⁸Ca, ⁴⁸Ca'), E=175, 180, 185, 190 MeV; calculated coherent rotational state amplitudes, fission α-decay time derivative. Semi-classical model.

1980DU11      Nuovo Cim. A58, 105 (1980)

O.Dumitrescu, L.Fonda, N.Mankoc-Borstnik

Alpha Decay of Coherent Rotational States

RADIOACTIVITY ²³⁸U; calculated α-decay probability. Coherent rotational state, rotational parent, daughter nuclei.

doi: 10.1007/BF02729843
Citations: PlumX Metrics

1976BO46      Rev.Roum.Phys. 21, 853 (1976)

C.Borcea, A.Buta, F.Carstoiu, A.Constantinescu, A.Galeriu, A.Isbasescu, I.Lazar, I.Mihai, I.Mihailescu, P.Osiceanu, M.Petrascu, M.Petrovici, D.G.Popescu, V.Simion, G.Voiculescu, O.Dumitrescu, I.N.Kukhtina

Proton Scattering on ²³⁸U and the Probable Isobaric Analogue Resonances

NUCLEAR REACTIONS ²³⁸U(p, p'), E=15-16.2 MeV; measured σ(E, Ep', θ). ²³⁸U levels deduced S.

1976DU03      Rev.Roum.Phys. 21, 323 (1976)

O.Dumitrescu, D.G.Popescu

On the Alpha Decay of ²⁵⁵Fm, ²⁵⁷Fm and ²⁴¹Pu

RADIOACTIVITY ^253,251Cf, ²³⁷U; calculated α-hindrance factors.

1976DU07      Rev.Roum.Phys. 21, 829 (1976)

O.Dumitrescu, S.Holan, A.Popescu, D.G.Popescu, A.Sandulescu

Alpha Decay of Heavy and Superheavy Nuclei

RADIOACTIVITY ^{206,208,210,212,214,216}Po; A > 200; calculated T_1/2(α).

1975CA16      Rev.Roum.Phys. 20, 415 (1975)

F.Carstoiu, O.Dumitrescu, D.G.Popescu

On the Existence of a Complex and Nonlocal α-Nucleus Potential and the α-Decay

RADIOACTIVITY ²⁰⁸Po; calculated reduced widths for favored α-decay.

1975DU15      Rev.Roum.Phys. 20, 873 (1975)

O.Dumitrescu, D.G.Popescu, A.Sandulescu

Calculation of Alpha Half-Lives for Superheavy Nuclei

NUCLEAR STRUCTURE A > 200; calculated α T_1/2.

1973DU05      Rev.Roum.Phys. 18, 225 (1973)

O.Dumitrescu

Transfer Reactions on Deformed Nuclei

NUCLEAR REACTIONS ²⁴Mg(p, p');(d, d'); ²⁴Mg, ¹⁵⁴Gd(d, p); ^24,25Mg, ¹⁵⁵Gd levels calculated σ(θ).

1973DU09      Rev.Roum.Phys. 18, 1231 (1973)

O.Dumitrescu, M.Petrascu, D.G.Popescu, A.Sandulescu

On the Alpha Decay of ²³⁹Pu

RADIOACTIVITY ²³⁹Pu; calculated α-hindrance factors.

1973DU11      Rev.Roum.Phys. 18, 1065 (1973)

O.Dumitrescu, D.G.Popescu

On the Alpha Decay of ²⁴¹Am and ²⁴³Am

RADIOACTIVITY ^241,243Am; calculated hindrance factors for α decay to levels in ^237,239Np.

1972CI02      Rev.Roum.Phys. 17, 281 (1972)

C.Cioaca, M.Cristu, O.Dumitrescu, A.Sandulescu

Pairing Vibrations and Alpha Decay

RADIOACTIVITY ^228,230Th, ²³²U, ²⁴⁰Pu; calculated Eα, hindrance factors for transitions to β-vibrational states.

1972DU14      Ann.Phys.(New York) 71, 556 (1972)

O.Dumitrescu, H.Kummel

Resonance Scattering Theory and the Structure of Compound States

doi: 10.1016/0003-4916(72)90132-7
Citations: PlumX Metrics

1972DU22      Z.Naturforsch. 27a, 733 (1972)

O.Dumitrescu, M.Gari, H.Kummel, J.G.Zabolitzky

Circular Polarization of Gamma Rays and Parity Nonconserving Interactions

1971DU15      Rev.Roum.Phys. 16, 487 (1971)

O.Dumitrescu, C.Cioaca

On A(t, p)B Stripping Reactions

1971GA09      Phys.Lett. 35B, 19 (1971)

M.Gari, O.Dumitrescu, J.G.Zabolitzky, H.Kummel

A First Step Towards Realistic Calculations of Parity-Mixing Effects in Heavy Nuclei

RADIOACTIVITY ¹⁸¹Hf; calculated γ-circular polarization. ¹⁸¹Ta transition calculated γ-circular polarization.

doi: 10.1016/0370-2693(71)90428-X
Citations: PlumX Metrics

1969CR05      Nucl.Phys. A130, 31 (1969)

M.I.Cristu, O.Dumitrescu, N.I.Pyatov, A.Sandulescu

Alpha Decay and the Structure of the Kπ = 0⁺ States in the Th-U Region

NUCLEAR STRUCTURE ²²⁸Th, ²³⁰Th, ²³²U; calculated β-vibrational states from α-decay, α-hindrance.

doi: 10.1016/0375-9474(69)90956-7
Citations: PlumX Metrics

1967DU03      Nucl.Phys. A100, 456 (1967)

O.Dumitrescu, A.Sandulescu

Alpha-Decay to Vibrational Levels in Deformed Odd-Mass Nuclei

doi: 10.1016/0375-9474(67)90422-8
Citations: PlumX Metrics

1967SA01      Phys.Letters 24B, 212 (1967)

A.Sandulescu, O.Dumitrescu

Alpha Decay and the Structure of β-Vibrational States

doi: 10.1016/0370-2693(67)90464-9
Citations: PlumX Metrics

1966BR30      Rev.Roumaine Phys. 11, 531 (1966)

I.Brancus, O.Dumitrescu

Neutron-Proton Pairing and Collective Vibrations in Nuclei

1966DU09      Rev.Roumaine Phys. 11, 39 (1966)

O.Dumitrescu

Deuteron Reduced Widths on Superfluid Model with Bardeen-Cooper-Schrieffer and Projected Bardeen-Cooper-Schrieffer Wave Functions