NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = O.Helene Found 18 matches. 2005GU15 Phys.Rev. C 71, 044303 (2005) Energy of the 3/2+ state of 229Th reexamined NUCLEAR STRUCTURE 229Th; analyzed level and transition energy data; deduced isomeric state energy.
doi: 10.1103/PhysRevC.71.044303
2004CA03 Appl.Radiat.Isot. 60, 185 (2004) R.M.Castro, V.R.Vanin, O.Helene, P.R.Pascholati, N.L.Maidana, M.S.Dias, M.F.Koskinas The interplay between the statistical correlations of γ-ray emission probabilities and efficiency calibration RADIOACTIVITY 152Eu(EC), (β-); analyzed Eγ, Iγ, correlations. Application to efficiency calibration discussed.
doi: 10.1016/j.apradiso.2003.11.014
2002HE06 Nucl.Instrum.Methods Phys.Res. A481, 626 (2002) Analysis of Discrepant Data using a Bootstrap Procedure RADIOACTIVITY 3H, 90Sr, 137Cs; analyzed T1/2. Bootstrap procedure for analysis of discrepant data.
doi: 10.1016/S0168-9002(01)01377-8
2001HE08 Nucl.Instrum.Methods Phys.Res. A460, 289 (2001) O.Helene, Z.O.Guimaraes-Filho, V.R.Vanin, T.M.Pauliquevis, Jr., I.D.Goldman, P.R.Pascholati Covariances between Gamma-Ray Energies COMPILATION A=22-203; compiled γ-energy correlation coefficients. Application to detector calibration discussed.
doi: 10.1016/S0168-9002(00)01067-6
2001HE41 Braz.J.Phys. 31, 8 (2001) Variances and Covariances in Deconvolution of Multichannel Spectra: 34S(γ, xn) Cross Section NUCLEAR REACTIONS 34S(γ, xn), E=10.4-29.4 MeV; analyzed neutron yields, spectra; deduced σ. Least squares method, minimum variance regularization procedure.
doi: 10.1590/s0103-97332001000100002
1999HE26 Nucl.Instrum.Methods Phys.Res. A433, 592 (1999) Improvement of 192Ir and 152Eu Gamma-Ray Calibration Energies by using a Self-Calibration Procedure RADIOACTIVITY 192Ir, 152Eu(β-), (EC); measured Eγ, Iγ; deduced uncertainties. Self-calibration procedure.
doi: 10.1016/S0168-9002(99)00474-X
1995MO08 Appl.Radiat.Isot. 46, 133 (1995) M.Moralles, P.R.Pascholati, V.R.Vanin, O.Helene Decay of 159Gd RADIOACTIVITY 159Gd(β-); measured Eγ, Iγ, γγ-coin. 159Tb deduced levels, γ transition related features.
doi: 10.1016/0969-8043(94)00101-5
1994TS05 Nucl.Instrum.Methods Phys.Res. A345, 538 (1994) S.P.Tsai, E.R.Mucciolo, O.Helene Relocation of Multichannel Spectra RADIOACTIVITY 152Eu(EC), (β+), (β-); analyzed γ peaks energy centroid, area, FWHM; deduced preservation of Poisson statistical fluctuation, spectral shapes. Multi-channel spectra relocation.
doi: 10.1016/0168-9002(94)90513-4
1993HE19 Nucl.Instrum.Methods Phys.Res. A335, 227 (1993) Gamma-Ray Calibration Energies: A review of the 192Ir data RADIOACTIVITY 192Ir(EC), (β-); 192Au(EC), (β+); analyzed Eγ data. 192Au deduced transition energy. Curved crystal spectrometer, Eγ fundamental constants covariance matrix.
doi: 10.1016/0168-9002(93)90274-L
1990BU15 Nucl.Phys. A513, 291 (1990) J.Busto, D.Dassie, O.Helene, Ph.Hubert, P.Larrieu, F.Leccia, P.Mennrath, M.M.Aleonard, J.Chevallier The 0+ → 2+ Neutrinoless Double Beta Decay of 76Ge: Results of the Frejus experiment RADIOACTIVITY 76Ge(2β); measured βγ-coin; deduced neutrinoless decay T1/2. Ge, NaI detectors.
doi: 10.1016/0375-9474(90)90100-Z
1990IS06 Z.Phys. A335, 243 (1990) M.C.P.Isaac, V.R.Vanin, O.A.M.Helene The Internal Bremsstrahlung following the Electron Capture Decay of 55Fe RADIOACTIVITY 55Fe(EC); measured internal bremsstrahlung spectra following EC-capture; deduced intensity relative to K-capture, Q(EC).
1990SC23 Z.Phys. A336, 313 (1990) A.M.S.Scardino, O.Helene, P.R.Pascholati, V.R.Vanin Beta Decay of 57Ni RADIOACTIVITY 57Ni [from 58Ni(γ, n)]; measured Eγ, Iγ, γγ-coin. 57Co deduced levels, J, π, Iγ.
1989MU12 Phys.Rev. C40, 2403 (1989) Double Gamma Decay in 90Zr RADIOACTIVITY 90Y [from 90Sr-decay]; measured γ sum energy spectra. 90Zr level deduced double γ-branching ratio.
doi: 10.1103/PhysRevC.40.2403
1987MU07 Nucl.Instrum.Methods Phys.Res. A256, 153 (1987) Energy Measurement of Gamma Rays from 133Ba Decay: Consistency with cascade cross-over relations RADIOACTIVITY 133Ba(EC); measured Eγ, Iγ. 133Cs deduced levels, γ branching. Hyperpure Ge, Ge(Li) detectors.
doi: 10.1016/0168-9002(87)91050-3
1985HE18 Z.Phys. A322, 331 (1985) Decay Scheme of 92mNb NUCLEAR REACTIONS 93Nb(γ, n), E=14-16.5 MeV bremsstrahlung; measured Eγ, Iγ. 92mNb deduced decay characteristics. 92Zr levels deduced (EC+β+) branching ratios. Metallic Nb target. RADIOACTIVITY 92mNb(EC), (β+) [from 93Nb(γ, n), E=16.5 MeV bremsstrahlung]; measured Eγ, Iγ; deduced log ft. 92Zr levels deduced (EC+β+) branching ratios.
doi: 10.1007/BF01411899
1985KH01 Z.Phys. A320, 535 (1985) S.Khazrouni, A.Chevallier, J.Chevallier, O.Helene, G.Ramanantsizehena, N.Schulz Occurrence of Alternating Parity Levels in Bands of the Odd-Z 219Ac Nucleus NUCLEAR REACTIONS 209Bi(13C, 3n), 208Pb(15N, 4n), E=tandem; measured γγ-coin, γγ(θ), γ-spectra. 219Ac deduced levels, B(E1)/B(E2), γ-branching, band structure.
doi: 10.1007/BF01415734
1983HE12 Nucl.Instrum.Methods 212, 319 (1983) Upper Limit of Peak Area RADIOACTIVITY 92mNb(EC), (β+) [from 93Nb(γ, n)]; measured residual γ activity; deduced β-decay log ft lower limit. 92Zr levels deduced β-feeding probability upper limit. Multi-channel spectra, peak area upper limit, Monte Carlo testing.
doi: 10.1016/0167-5087(83)90709-3
1979HE11 Nuovo Cim. 50A, 81 (1979) Gamma-Ray Transition between 9- and 8- Levels in 178Hf Measured in 178Ta 2.45 h Decay RADIOACTIVITY 178mTa [from 181Ta(γ, 3n)]; measured Eγ, Iγ. 178Ta levels deduced J, π, Nilsson configuration. 178Hf levels deduced Nilsson configurations.
doi: 10.1007/BF02804773
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