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NSR database version of May 24, 2024.

Search: Author = O.Constantinescu

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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 a2D3/2-5d6s(a3D)6p z4F05/2 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
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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 176,177,179,178Hf(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 164,165,166,167,168,169W(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 172,176,177,178,179,180Hf; 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 T1/2. 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 T1/2, 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), T1/2. 223Ra deduced levels, J, π, band structure, shape features.

doi: 10.1103/PhysRevC.47.94
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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
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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 (T1/2 = 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 (T1/2 = 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
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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 T1/2; 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.

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