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NSR database version of May 2, 2024.

Search: Author = N.Janeva

Found 21 matches.

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2012KO01      Prog.Nucl.Energy 54, 171 (2012)

N.Koyumdjieva, N.Janeva

New interpretation of the 232Th unresolved resonance self-shielding effect

NUCLEAR REACTIONS 232Th(n, X), (n, γ), E=4-100 keV; analyzed experimental data; calculated resonance self-shielding factors with resonance parameters from ENDF/B-VII.0, JENDL-3.3, JENDL-4.0, BROND-3 and JEFF-3.1 evaluated nuclear reaction libraries, total σ. Comparison with experimental data.

doi: 10.1016/j.pnucene.2011.06.006
Citations: PlumX Metrics


2011KO54      J.Korean Phys.Soc. 59, 1920s (2011)

N.Koyumdjieva, N.Janeva, A.A.Lukyanov

Influence of Resonance Effects in the Unresolved Resonance Region on 232Th Data Evaluation

COMPILATION 232Th(n, X), E≈4-140 keV; calculated, evaluated neutron strength functions, average σ, self-shielding factor, effective resonance integral. Compared with ENDF/B-VII.0, ENDF/B-VI.8, BROND3, JENDL-3.3, available data.

doi: 10.3938/jkps.59.1920
Citations: PlumX Metrics


2011SE12      J.Korean Phys.Soc. 59, 1737s (2011)

V.Semkova, N.Janeva, N.Koyumdjieva, R.J.Tornin, A.Moens, A.J.M.Plompen, K.Volev

Neutron-Induced Activation Cross Sections on Hafnium Isotopes from the Threshold to 20 MeV

NUCLEAR REACTIONS 174,176Hf(n, 2n), 177Hf(n, p)177gLu, 177Hf(n, 3n), 178Hf(n, α), (n, x)177gLu, 180Hf(n, α), (n, p), 180Hf(n, n')180mHf, E=threshold-20 MeV; measured Eγ, Iγ; deduced activation σ. Compared with available data, JENDL-3.3, JEFF-3.1, ENDF?B-VII.0, TENDL-2009 (TALYS Evaluated Nuclear Data Library).

doi: 10.3938/jkps.59.1737
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23161.


2010KO14      J.Phys.(London) G37, 075101 (2010); Erratum J.Phys.(London) G37, 089701 (2010)

N.Koyumdjieva, N.Janeva, A.A.Lukyanov

Cross section structure of 232Th in the unresolved resonance region

NUCLEAR REACTIONS 232Th(n, X), (n, γ), E=4-140 keV; analyzed experimental neutron data; deduced average resonance parameters, resonance σ. R-matrix elements distribution and Wigner theory.

doi: 10.1088/0954-3899/37/7/075101
Citations: PlumX Metrics


2010ME14      J.Phys.:Conf.Ser. 205, 012051 (2010)

Zh.V.Mezentseva, Yu.V.Grigoriev, N.B.Janeva

Investigations of a resonance structure of neutron cross-sections using the multiplicity spectrometry technique

NUCLEAR REACTIONS 98Mo(n, γ), E=0.1-60 keV;232Th(n, γ), E=35-10000 eV; measured reaction products; deduced group capture σ. 232Th(n, γ), E=20-200 eV; measured reaction products; deduced capture σ on low resolved resonances. Compared with ENDF/B-VI, JENDL-3, Mo data also with other ones.

doi: 10.1088/1742-6596/205/1/012051
Citations: PlumX Metrics


2006BO04      Nucl.Sci.Eng. 152, 1 (2006)

A.Borella, K.Volev, A.Brusegan, P.Schillebeeckx, F.Corvi, N.Koyumdjieva, N.Janeva, A.A.Lukyanov

Determination of the 232Th(n, γ) Cross Section from 4 to 140 keV at GELINA

NUCLEAR REACTIONS 232Th(n, γ), E=4-140 keV; measured capture σ; deduced average resonance parameters. Comparison with previous results.

doi: 10.13182/NSE06-A2557
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22875.


2001KO05      Nucl.Sci.Eng. 137, 194 (2001)

N.Koyumdjieva, N.Janeva, K.Volev

Validation of the Characteristic Function Model for the Unresolved Resonance Region

NUCLEAR REACTIONS 56Fe, 238U(n, X), E < 800 keV; analyzed σ; calculated self-shielding factors for unresolved resonance region.

doi: 10.13182/NSE01-A2185
Citations: PlumX Metrics


1997LU10      Fiz.Elem.Chastits At.Yadra 28, 847 (1997); Phys.Part.Nucl. 28, 331 (1997)

A.A.Lukyanov, N.B.Yaneva

Multilevel Parametrization of Resonance Neutron Cross Sections


1995KO41      Z.Phys. A353, 31 (1995)

N.Koyumdjieva, A.A.Lukyanov, N.Janeva

Characteristic Functions in the Statistical R-Matrix Theory

doi: 10.1007/BF01297724
Citations: PlumX Metrics


1994GE15      Proc.Intern.Conf.Nuclear Data for Science and Technology, Gatlinburg, Tennesse, 9-13 May, 1994, J.K.Dickens, Ed., American Nuclear Society, Vol.1, p.299 (1994)

G.P.Georgiev, Yu.V.Grigoriev, G.V.Muradyan, N.B.Janeva

Neutron resonance parameters of 119Sn

NUCLEAR REACTIONS 119Sn(n, n), 119Sn(n, γ), 120Sn(n, n), E=0.0 eV-1.9 keV; measured products, Eγ, Iγ; deduced resonance parameters. Data were imported from EXFOR entry 41200.

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41200.


1993GE07      Nucl.Phys. A565, 643 (1993)

G.Georgiev, Yu.S.Zamyatnin, L.B.Pikelner, G.V.Muradian, Yu.V.Grigorev, T.Madjarski, N.Janeva

Determination of 147Sm and 148Sm Resonance Parameters

NUCLEAR REACTIONS 147,148Sm(n, γ), E=15-4000 eV; measured σ(n, γ), σ(n, n'), for capture, neutron scattering. 148,149Sm deduced resonances, Γγ, Γ(n), J. Multisectional scintillation detector, IBR-30 pulse booster.

doi: 10.1016/0375-9474(93)90050-8
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41122.


1992JA05      Nucl.Instrum.Methods Phys.Res. A313, 266 (1992)

N.Janeva, S.Toshkov, G.V.Muradyan, Yu.V.Grigorev, G.Georgiev, I.Sirakov, V.G.Tishin, Yu.S.Zamyatnin

A Setup for Precise Measurement of Resonance Neutron Capture by Self-Indication

NUCLEAR REACTIONS 238U(n, γ), E=0.465-200 keV; measured capture self-indication ratio; deduced implications for self-shielding effects, γ-multiplicity characteristics of resonances.

doi: 10.1016/0168-9002(92)90104-C
Citations: PlumX Metrics


1988AD11      At.Energ. 65, 434 (1988); Sov.At.Energy 65, 1022 (1988)

Yu.V.Adamchuk, M.A.Voskanyan, G.Georgiev, A.L.Kovtun, G.V.Muradyan, N.Stancheva, N.Chikov, N.Yaneva, Yu.G.Shchepkin

Measuring of 235U α Values at a Thermal Point

NUCLEAR REACTIONS 235U(n, γ), (n, F), E=thermal; measured capture γ-spectra, fission neutron spectra; deduced α-parameter.

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41044.


1987VA11      Nucl.Sci.Eng. 96, 122 (1987)

A.A.Vankov, V.F.Ukraintsev, N.Yaneva, S.Toshkov, A.Mateeva

Nuclear Data for 235U, 238U, and 239Pu in the Unresolved Resonance Region

NUCLEAR REACTIONS 235,238U, 239Pu(n, n), (n, F), E ≤ 50 keV; measured transmission, fission self-indication functions. 236,239U, 240Pu deduced mean resonance parameters. Tof. R-matrix formalism.

doi: 10.13182/NSE87-A16372
Citations: PlumX Metrics


1986KO29      Radiat.Eff. 96, 277 (1986)

V.Kolesov, A.Lukyanov, S.Toshkov, N.Janeva

Multilevel Analysis of Pu-239 Neutron Cross Sections in the Resolved Resonance Region

NUCLEAR REACTIONS 239Pu(n, n), (n, γ), (n, F), E=5.3-80 eV; analyzed total, capture, fission, reaction σ(E). 240Pu deduced multilevel resonance parmeters. S-matrix parametrization.

doi: 10.1080/00337578608211752
Citations: PlumX Metrics


1985AD06      Nucl.Instrum.Methods 236, 105 (1985)

Yu.V.Adamchuk, A.L.Kovtun, G.V.Muradyan, Yu.G.Shchepkin, G.Georgiev, N.Kalinkova, E.Moravska, N.Stancheva, N.Tchikov, N.Janeva

A Spectrometer for Measurement of the Neutron Capture Gamma Multiplicity at a Stationary Research Reactor

NUCLEAR REACTIONS 235U(n, γ), (n, F), E=0.025 eV; measured capture to fission ratio, γ-multiplicity. 4 π geometry, multi-sectional NaI(Tl) scintillation detector.

doi: 10.1016/0168-9002(85)90133-0
Citations: PlumX Metrics


1983BA72      At.Energ. 55, 34 (1983); Sov.At.Energy 55, 476 (1983)

T.Bakalov, G.Ilchev, S.Toshkov, V.F.Ukraintsev, Mai Chan Khan, N.Yaneva

Multilevel Parametrization of the Total Cross Section and Fission Cross Section of 239Pu in the Resonance Region of Neutron Energies

NUCLEAR REACTIONS 239Pu(n, X), (n, F), E=4-50 eV; measured transmission, total σ(E), fission σ(E); deduced resonance interference. 240Pu deduced resonance parameters. Adler S-matrix approach.

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset40672.


1980VA19      At.Energ. 48, 377 (1980); Sov.At.Energy 48, 381 (1980)

A.A.Vankov, Yu.V.Grigorev, V.F.Ukraintsev, T.Bakalov, G.Ilchev, S.Toshkov, Chan Khan-Mai, N.Yaneva

Determination of the Details of the Resonance Structure of Both the Total Cross Section and the Fission Cross Section of 235U and 239Pu for 2 eV-20-keV Neutrons

NUCLEAR REACTIONS, Fission 235U, 239Pu(n, n), (n, X), (n, F), E=.002-20 keV; measured transmission, total σ(E), resonance structure characteristics; deduced resonance self-shielding. Tof.

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset40510.


1973FU13      Izv.Fiz.Inst.ANEB Bulg.Akad.Nauk. 23, 121 (1973)

M.Furman, N.Janeva

Spin-Dependent Statistics of Partial Widths of Resonance Levels

NUCLEAR REACTIONS, Fission 235U, 239Pu(n, F); analyzed F-width.


1971RY01      Yad.Fiz. 13, 457 (1971); Sov.J.Nucl.Phys. 13, 255 (1971)

Y.V.Ryabov, S.D.Sik, N.Chikov, N.Yaneva

Parameters of the Neutron Resonances of U233, U235, and Pu239

NUCLEAR REACTIONS 233,235U, 239Pu(n, X), 235U, 239Pu(n, γ), (n, F), E=resonance; measured σ(nT)(E), σ(E). 234,236U, 240Pu deduced resonances, level-width.

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset40070.


1971RY03      Yad.Fiz. 14, 927 (1971); Sov.J.Nucl.Phys. 14, 519 (1972)

Y.V.Ryabov, So Don Sik, N.Chikov, N.Yaneva

Relative Measurements of ν-Bar in U235 and Pu239 Fission by Resonance Neutrons

NUCLEAR REACTIONS, Fission 235U, 239Pu(n, F), E=1-40, 5-85 eV; measured average prompt neutron numbers.


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Note: The following list of authors and aliases matches the search parameter N.Janeva: , N.B.JANEVA, N.B.YANEVA