NSR Query Results

Output year order : Descending
Format : Normal

NSR database version of April 25, 2024.

Search: Author = O.Constantinescu

Found 21 matches.

Back to query form

2003MU03      Yad.Fiz. 66, 8 (2003); Phys.Atomic Nuclei 66, 6 (2003)

G.V.Muradian, O.Ya.Shatrov, M.A.Voskanian, L.P.Yastrebova, V.L.Volkov, Ch.Briancon, M.Hussonnois, Yu.Ts.Oganessian, S.A.Karamian, O.Constantinescu

Search for Neutron Resonances in the ^178m2Hf Isomer and Their investigation

NUCLEAR REACTIONS ^178mHf(n, γ), E < 8 MeV; measured Eγ, Iγ. ^178mHf deduced neutron resonance energies, widths.

doi: 10.1134/1.1540652
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41434.

1997KI28      J.Radioanal.Nucl.Chem. 215, 219 (1997)

J.B.Kim, D.Trubert, O.Constantinescu, S.A.Karamian, Yu.Ts.Oganessian, Ch.Briancon, M.Hussonnois

Purity Determination of Super-Enriched ¹⁷⁶Yb by Neutron Activation and Thermal Neutron Capture Cross Section Measurement of the High-Spin (16+) Isomer ^178m2Hf

NUCLEAR REACTIONS ¹⁷⁶Yb(n, γ), E=thermal; measured Eγ, Iγ; deduced ¹⁷⁶Yb sample yield optimization, purity, enrichment features. ^178mHf(n, γ), E=thermal; measured Eγ, Iγ; deduced capture σ to high-spin isomer in ¹⁷⁹Hf. High-spin ^178mHf target from (α, 2n) reaction on enriched ¹⁷⁶Yb target.

doi: 10.1007/BF02034467
Citations: PlumX Metrics

1997KI29      J.Radioanal.Nucl.Chem. 215, 229 (1997)

J.B.Kim, J.Morel, M.Etcheverry, N.Coursol, D.Trubert, O.Constantinescu, S.A.Karamian, Yu.Ts.Oganessian, Ch.Briancon, M.Hussonnois

Precise Measurement of Gamma-Ray Energies and Gamma-Ray Emission Probabilities in ^178m2Hf Decay

NUCLEAR REACTIONS, ICPND ¹⁷⁶Yb(α, 2n), E ≈ 20-45 MeV; measured residual production σ, isomer ratio vs E, Eγ, Iγ. ¹⁷⁸Hf deduced high-spin isomer decay, transition energies.

RADIOACTIVITY ^178mHf; measured Eγ, Iγ from decay of long-lived isomer. ¹⁷⁸Hf deduced levels, J, π.

doi: 10.1007/BF02034469
Citations: PlumX Metrics

1997LE33      Radiochim.Acta 77, 143 (1997)

C.Le Naour, D.Trubert, L.Brillard, M.Hussonnois, F.Monroy-Guzman, O.Constantinescu, D.Le Du, R.Meunier

Isolation of Radiochemically Pure ¹⁴⁸Gd from Alpha Particle Irradiated Samarium Oxide by Chromatographic Methods and Mass Separation

1997OG06      Hyperfine Interactions 107, 129 (1997)

Yu.Ts.Oganessian, M.Hussonnois, Ch.Briancon, S.A.Karamian, Z.Szeglowski, D.Ledu, R.Meunier, M.Constantinescu, J.B.Kim, O.Constantinescu

Production, Chemical and Isotopic Separation of the ^178m2Hf High-Spin Isomer

NUCLEAR REACTIONS ¹⁷⁶Yb(α, 2n)^178mHf, E=36 MeV; measured high-spin isomer yield. Isotopic separation, ^178m2Hf isomeric target preparation discussed.

doi: 10.1023/A:1012047504207
Citations: PlumX Metrics

1997ZH36      Hyperfine Interactions 108, 483 (1997)

W.Z.Zhao, F.Buchinger, J.E.Crawford, S.Fedrigo, S.Gulick, J.K.P.Lee, O.Constantinescu, M.Hussonnois, J.Pinard

Hyperfine Structure and Isotope Shifts in the 5d6s² a²D_3/2-5d6s(a³D)6p z⁴F⁰_5/2 Transition of Hf II

NUCLEAR MOMENTS ^172,177,179Hf; measured hfs, isotope shifts. Laser spectroscopy, radio-frequency quadrupole ion trap.

doi: 10.1023/A:1012660123714
Citations: PlumX Metrics

1996DE11      Phys.Rev. C53, 1266 (1996)

S.Deylitz, B.D.Valnion, K.El Abiary, J.de Boer, N.Gollwitzer, R.Hertenberger, G.Graw, R.Kulessa, Ch.Briancon, D.Le Du, R.Meunier, M.Hussonnois, O.Constantinescu, S.Fortier, J.B.Kim, L.H.Rosier, G.Rotbard, Yu.Ts.Oganessian, S.A.Karamian, H.J.Wollersheim, H.Folger, J.Gerl, Th.Happ, C.Hategan

Inelastic Deuteron Scattering from the High-Spin Isomer ^178mHf² (16⁺)

NUCLEAR REACTIONS ¹⁷⁸Hf(d, d'), E=22 MeV; measured deuteron spectra, σ(θ). ¹⁷⁸Hf deduced possible level, J, π. Target in isomeric state.

doi: 10.1103/PhysRevC.53.1266
Citations: PlumX Metrics

1996KA34      Z.Phys. A356, 23 (1996)

S.A.Karamian, J.de Boer, Yu.Ts.Oganessian, A.G.Belov, Z.Szeglowski, B.N.Markov, J.Adam, V.I.Stegailov, Ch.Briancon, O.Constantinescu, M.Hussonnois

Observation of Photonuclear Reactions on Isomeric Targets: ^178m₂Hf(γ, n)^177m₂Hf, ^180mTa(γ, 2n)^178m,178gTa and ^180mTa(γ, p)^179m₂Hf

NUCLEAR REACTIONS, ICPND ¹⁷⁸Hf(γ, n), (γ, 2n), (γ, p), E ≤ 23.5 MeV bremsstrahlung; measured Eγ, Iγ, residuals isomer to ground state yield ratios; analyzed other (γ, n) reaction data, systematics; deduced levels population selectivity does not survive at high excitation energies.

doi: 10.1007/s002180050143
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0936.

1996LU07      Z.Phys. A355, 377 (1996)

E.Lubkiewicz, H.J.Wollersheim, R.Kulessa, Ch.Briancon, W.Bruchle, O.Constantinescu, M.Debowski, E.Ditzel, H.Folger, J.Gerl, F.Hannachi, T.Happ, M.Hussonnois, E.Jager, S.Karamyan, M.Kaspar, Th.Kroll, Yu.Ts.Oganessian, I.Peter, H.Schaffner, S.Schremmer, R.Schubert, N.Trautmann, K.Vetter, G.Zauner

Coulomb Excitation of the K(π) = 16⁺ Rotational Band in ¹⁷⁸Hf

NUCLEAR REACTIONS ^{176,177,179,178}Hf(²⁰⁸Pb, ²⁰⁸Pb'), E=4.77 MeV/nucleon; measured Eγ, Iγ, (particle)(particle)γ-coin following Coulomb excitation. ¹⁷⁸Hf deduced level, J, π, intrinsic quadrupole moment. Rigid rotor model. Stable Hf targets, ¹⁷⁸Hf target in a high-spin isomeric state.

doi: 10.1007/s002180050125
Citations: PlumX Metrics

1996SC50      J.Radioanal.Nucl.Chem. 214, 1 (1996)

D.Schumann, R.Dressler, St.Taut, H.Nitsche, Z.Szeglowski, B.Kubica, L.I.Guseva, G.S.Tikhomirova, A.Yakushev, O.Constantinescu, V.P.Domanov, M.Constantinescu, D.T.Lien, Yu.Ts.Oganessian, V.B.Brudanin, I.Zvara, H.Bruchertseifer

On-Line Separation of Short-Lived Tungsten Isotopes from Tantalum, Hafnium and Lutetium by Adsorption on Ion Exchangers from Aqueous Ammonia Solution

RADIOACTIVITY ^{164,165,166,167,168,169}W(β⁺)(EC) [from ^144,147Sm(²⁴Mg, xn), E=112 MeV]; measured Eγ, Iγ; deduced cation-exchange column adsorption properties.

doi: 10.1007/BF02165053
Citations: PlumX Metrics

1996ZH35      Nucl.Instrum.Methods Phys.Res. B108, 354 (1996)

W.Z.Zhao, S.Fedrigo, F.Buchinger, J.E.Crawford, S.Gulick, J.K.P.Lee, O.Constantinescu, M.Hussonois, J.Pinard

Ion Storage and Laser-Induced Fluorescence Measurements in an RFQ Trap

NUCLEAR MOMENTS ^{172,176,177,178,179,180}Hf; measured hfs. Radiofrequency quadrupole ion trap, laser-induced fluorescence.

doi: 10.1016/0168-583X(95)01164-1
Citations: PlumX Metrics

1995TR10      Radiochim.Acta 69, 149 (1995)

D.Trubert, M.Hussonnois, L.Brillard, V.Barci, G.Ardisson, Z.Szeglowski, O.Constantinescu

Investigation of the ¹⁶⁸Hf Electron Capture Decay Using Fast Radiochemical Separation

RADIOACTIVITY ¹⁶⁸Hf(EC), (β⁺) [from ¹⁵⁶Gd(¹⁶O, 4n), E=100 MeV]; measured Eγ, Iγ, γγ-coin; deduced T_1/2. ¹⁶⁸Lu deduced levels, possible J, π.

1994BO15      Phys.Rev.Lett. 72, 2689 (1994)

N.Boos, F.Le Blanc, M.Krieg, J.Pinard, G.Huber, M.D.Lunney, D.Le Du, R.Meunier, M.Hussonnois, O.Constantinescu, J.B.Kim, Ch.Briancon, J.E.Crawford, H.T.Duong, Y.P.Gangrski, T.Kuhl, B.N.Markov, Yu.Ts.Oganessian, P.Quentin, B.Roussiere, J.Sauvage

Nuclear Properties of the Exotic High-Spin Isomer ^178m2Hf from Collinear Laser Spectroscopy

RADIOACTIVITY ^178mHf(IT) [from ¹⁷⁶Yb(α, 2n), E=36 MeV]; measured hfs spectrum; deduced hyperfine parameters. ¹⁷⁸Hf levels deduced charge rms radius difference, high spin isomer spectroscopic quadrupole moment.

doi: 10.1103/PhysRevLett.72.2689
Citations: PlumX Metrics

1994LA25      Nucl.Phys. A580, 113 (1994)

Yu.A.Lazarev, Yu.Ts.Oganessian, Z.Szeglowski, V.K.Utyonkov, Yu.P.Kharitonov, O.Constantinescu, D.Lien, I.V.Shirokovsky, S.P.Tretyakova

Cross Sections of the (HI, αn) Channel in the Cold-Fusion-Type Reactions ²⁰⁹Bi + ⁴⁰Ar and ²⁰⁸Pb + ³⁷Cl

NUCLEAR REACTIONS ²⁰⁹Bi(⁴⁰Ar, X), ²⁰⁸Pb(³⁷Cl, X), E=230 MeV; measured production σ for ²⁴⁰Cm; deduced σ upper limits for (⁴⁰Ar, αn), (³⁷Cl, αn), other reactions. Enriched targets, radiochemistry technique.

RADIOACTIVITY ²⁴²Es, ²³⁸Bk(EC); measured T_1/2, EC-delayed fission yields; deduced delayed fission branching in ²³⁸Bk.

doi: 10.1016/0375-9474(94)90818-4
Citations: PlumX Metrics

1994SZ08      Radiochim.Acta 64, 57 (1994)

Z.Szeglowski, O.Constantinescu, M.Hussonnois, A.Abdul-Hadi, G.J.Ardisson

Continuous Purification of ²²³Fr from Its Decay Products on a Nickel Hexacyanoferrate (II) Composite Ion Exchanger

RADIOACTIVITY ²²³Fr(β^-) [from ²²⁷Ac(α-decay)]; measured γ-spectra, high purity, γγ-, γ(X-ray)-coin. Continuous isolation, purification of source.

1993AB01      Phys.Rev. C47, 94 (1993)

A.Abdul-Hadi, V.Barci, B.Weiss, H.Maria, G.Ardisson, M.Hussonnois, O.Constantinescu

²²³Ra Levels Fed in the ²²³Fr β Decay

RADIOACTIVITY ²²³Fr(α), (β^-) [from ²²⁷Ac(α-decay)]; measured Eγ, Iγ, γγ-coin, γγ(t), T_1/2. ²²³Ra deduced levels, J, π, band structure, shape features.

doi: 10.1103/PhysRevC.47.94
Citations: PlumX Metrics

1993RO20      Phys.Rev. C48, R2148 (1993)

G.Rotbard, G.Berrier-Ronsin, O.Constantinescu, S.Fortier, S.Gales, M.Hussonnois, J.B.Kim, J.M.Maison, L.-H.Rosier, J.Vernotte, Ch.Briancon, R.Kulessa, Yu.Ts.Oganessian, S.A.Karamian

Blocking Effect in the 16⁺ → 16⁺ (p, t) Transition on the Isomeric ^178m2Hf Target

NUCLEAR REACTIONS ¹⁷⁸Hf(p, t), E=19 MeV; measured σ(θ); deduced aligned quasineutron orbitals blocking effect. ¹⁷⁸Hf deduced isomer to isomer, 0⁺ → 0⁺ transition σ ratio. Target in isomeric state.

doi: 10.1103/PhysRevC.48.R2148
Citations: PlumX Metrics

1992OG01      J.Phys.(London) G18, 393 (1992)

Yu.Ts.Oganessian, S.A.Karamian, Y.P.Gangrsky, B.Gorski, B.N.Markov, Z.Szeglowski, Ch.Briancon, D.Ledu, R.Meunier, M.Hussonnois, O.Constantinescu, M.I.Subbotin

Production, Chemical and Isotopic Separations of the Long-Lived Isomer ^178m2Hf (T_1/2 = 31 Years)

NUCLEAR REACTIONS, ICPND ¹⁷⁶Yb(α, 2n), E ≈ 20-45 MeV; measured σ(E) for residual ground, isomer states production, Eγ, Iγ; deduced optimum conditions for ^178mHf production. Chemical, isotopic separation, enriched ¹⁷⁶Yb target.

doi: 10.1088/0954-3899/18/2/019
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF1359.

1990AB12      Compt.Rend.Acad.Sci., Ser.II 311, 1399 (1990)

A.Abdul-Hadi, M.Hussonnois, Z.Szeglowski, B.Weiss, O.Constantinescu, G.Ardisson

Le Spectre Gamma du ²²³Fr (T_1/2 = 22 mn)

RADIOACTIVITY ²²³Fr [after radiochemical separation from ²²⁷Ac]; measured Eγ, Iγ following decay. Hyperpure Ge detector.

1984OG02      Z.Phys. A319, 215 (1984)

Yu.Ts.Oganessian, A.G.Demin, M.Hussonnois, S.P.Tretyakova, Yu.P.Kharitonov, V.K.Utyonkov, I.V.Shirokovsky, O.Constantinescu, H.Bruchertseifer, Yu.S.Korotkin

On the Stability of the Nuclei of Element 108 with A = 263-265

NUCLEAR REACTIONS ²⁰⁸Pb(⁵⁰Ti, xn)²⁵⁷Rf/²⁵⁶Rf/²⁵⁵Rf, E=5.45 MeV/nucleon; ²⁰⁸Pb(⁵⁴Cr, xn)²⁶¹Sg/²⁶⁰Sg/²⁵⁹Sg, E=5.5 MeV/nucleon; ²⁰⁸Pb(⁵⁸Fe, xn)²⁶⁵Hs/²⁶⁴Hs, E=5.5 MeV/nucleon; ²⁰⁷Pb(⁵⁸Fe, xn)²⁶⁴Hs, E=5.5 MeV/nucleon; ²⁰⁹Bi(⁵⁵Mn, xn), E=5.5 MeV/nucleon; measured evaporation residue production σ. ²⁶³Hs, ²⁶⁵Hs, ²⁶⁴Hs deduced considerable α-decay probability, high stability against SF decay. Activation technique.

doi: 10.1007/BF01415635
Citations: PlumX Metrics

1984OG03      Radiochim.Acta 37, 113 (1984)

Yu.Ts.Oganessian, M.Hussonnois, A.G.Demin, Yu.P.Kharitonov, H.Bruchertseifer, O.Constantinescu, Yu.S.Korotkin, S.P.Tretyakova, V.K.Utyonkov, I.V.Shirokovsky, J.Estevez

Experimental Studies of the Formation and Radioactive Decay of Isotopes with Z = 104-109

NUCLEAR REACTIONS ²⁰⁸Pb(⁵⁰Ti, γ), (⁵⁰Ti, n), (⁵⁰Ti, 2n), (⁵⁰Ti, 3n), E=5.45 MeV/nucleon; ²⁰⁸Pb(⁴⁹Ti, n), (⁴⁹Ti, 2n), (⁴⁹Ti, nα), (⁴⁹Ti, 2np), E=5.53 MeV/nucleon; ²⁰⁸Pb(⁴⁸Ti, n), (⁴⁸Ti, np), (⁴⁸Ti, α), E=5.4 MeV/nucleon; measured α-, fission fragment numbers; deduced residuals production σ. ²⁰⁹Bi(⁵⁰Ti, n), E=5.3 MeV/nucleon; ²⁰⁹Bi(⁵⁴Cr, n), E=5.4 MeV/nucleon; ²⁰⁸Pb(⁵⁵Mn, n), (⁵⁹Co, n), ²⁰⁹Bi(⁵⁸Fe, n), ²⁰⁸Pb(⁵⁴Cr, n), (⁵⁴Cr, 2n), (⁵⁴Cr, 3n), ²⁰⁸Pb(⁵⁸Fe, n), (⁵⁸Fe, 2n), ²⁰⁷Pb(⁵⁸Fe, n), ²⁰⁹Bi(⁵⁵Mn, n), E=5.5 MeV/nucleon; ²⁰⁹Bi(⁵⁵Mn, np), E=5.55 MeV/nucleon; ²⁰⁸Pb(⁵⁰Ti, n), (⁵⁰Ti, 2n), (⁵⁰Ti, 3n), E=5.45 MeV/nucleon; measured Eα, α-, fission fragment numbers, decay T_1/2; deduced residuals production σ, yields.

RADIOACTIVITY ²⁵⁷Rf, ²⁵⁶Rf, ²⁵⁵Rf, ²⁵⁸Db, ²⁶²Bh, ²⁶⁶Mt, ^261,260,259Sg, ^263,264,265Hs, ^254,256Lr, ²⁵²No [from Pb, ²⁰⁹Bi(^49,50Ti, xn), (⁵⁸Fe, xn), (⁵⁵Mn, xn), E ≈ 5-5.5 MeV/nucleon]; measured decay characteristics. ²⁶⁵Hs, ²⁶⁴Hs, ²⁶³Hs, ²⁶⁶Mt, ²⁶¹Sg, ²⁶⁰Sg, ²⁵⁹Sg deduced α-decay preponderance.