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NSR database version of May 10, 2024.

Search: Author = O.Helene

Found 18 matches.

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2005GU15      Phys.Rev. C 71, 044303 (2005)

Z.O.Guimaraes-Filho, O.Helene

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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

2002HE06      Nucl.Instrum.Methods Phys.Res. A481, 626 (2002)

O.Helene, V.R.Vanin

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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

2001HE41      Braz.J.Phys. 31, 8 (2001)

O.Helene, C.Takiya, V.R.Vanin

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
Citations: PlumX Metrics

1999HE26      Nucl.Instrum.Methods Phys.Res. A433, 592 (1999)

O.Helene, V.R.Vanin, S.P.Tsai

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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

1993HE19      Nucl.Instrum.Methods Phys.Res. A335, 227 (1993)

O.Helene, V.R.Vanin

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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

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)

E.R.Mucciolo, O.Helene

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
Citations: PlumX Metrics

1987MU07      Nucl.Instrum.Methods Phys.Res. A256, 153 (1987)

E.R.Mucciolo, O.Helene

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
Citations: PlumX Metrics

1985HE18      Z.Phys. A322, 331 (1985)

O.Helene, I.D.Goldman

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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

1979HE11      Nuovo Cim. 50A, 81 (1979)

O.Helene, I.D.Goldman

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
Citations: PlumX Metrics

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Note: The following list of authors and aliases matches the search parameter O.Helene: , O.A.HELENE