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NSR database version of April 27, 2024.

Search: Author = I.Penev

Found 26 matches.

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2001GI17      Eur.Phys.J. A 12, 309 (2001)

A.Gizon, J.Genevey, C.F.Liang, P.Paris, D.Barneoud, J.Inchaouh, I.Penev, A.Plochocki

The ¹³⁰Nd → ¹³⁰Pr → ¹³⁰Ce Decay Chain Revisited

RADIOACTIVITY ¹³⁰Nd, ¹³⁰Pr(EC), (β⁺)[from ^94,96Mo(⁴⁰Ca, X), E=273 MeV]; measured Eγ, E(ce), βγ-, γγ-coin, γ multipolarity, T_1/2; deduced β-feeding intensities, log ft. ¹³⁰Pr, ¹³⁰Ce deduced levels, J, π. Comparison with earlier data and with Interacting Boson Model results.

doi: 10.1007/s100500170008
Citations: PlumX Metrics
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1997GI07      Z.Phys. A358, 369 (1997)

A.Gizon, J.Genevey, Gh.Cata-Danil, D.Barneoud, R.Beraud, A.Emsallem, C.Foin, J.Gizon, C.F.Liang, P.Paris, I.Penev, A.Plochocki, B.Weiss

Decay of ¹²⁹Nd to Low-Lying States in ¹²⁹Pr

RADIOACTIVITY ¹²⁹Nd(β⁺)(EC) [from ⁹⁴Mo(⁴⁰Ca, nα), E=210 MeV]; measured Eγ, Iγ, βγ-coin γγ(t), γ(X-ray)(t), T_1/2. ¹²⁹Pr deduced levels, possible J, π, Iγ.

doi: 10.1007/s002180050340
Citations: PlumX Metrics

1997GI08      Z.Phys. A359, 11 (1997)

A.Gizon, J.Genevey, B.Weiss, G.Cata-Danil, J.Gizon, D.Barneoud, R.Beraud, D.Bucurescu, T.von Egidy, A.Emsallem, C.F.Liang, P.Paris, I.Penev, A.Plochocki

Decay of ¹²⁹Ce to Low-Lying Positive-Parity States in ¹²⁹La

RADIOACTIVITY ¹²⁹Ce(β⁺)(EC) [from ⁹⁴Mo(⁴⁰Ca, n4p), E=225 MeV]; measured Eγ, Iγ, γγ-, (ce)γ-coin. ¹²⁹La deduced levels, J, π, ICC. IBFM-2 calculations, other isotopes compared.

doi: 10.1007/s002180050360
Citations: PlumX Metrics

1997GI17      Compt.Rend.Acad.Bulg.Sci. 50, 19 (1997)

A.Gizon, J.Genevey, I.Penev, A.Plochocki, D.Barneoud, S.Batzev, D.Bucurescu, Gh.Cata-Danil, J.Inchaouh, C.F.Liang, P.Paris

Level Scheme of ¹²⁸Ce Populated via ¹²⁸Pr Beta-Decay

RADIOACTIVITY ¹²⁸Pr(EC) [from Mo(⁴⁰Ca, X)]; measured Eγ, Iγ, E(ce), I(ce), γγ-, (X-ray)γ-coin, T_1/2. ¹²⁸Ce deduced levels, J, π, ICC. Comparison with model predictions.

1996GI08      Nucl.Phys. A605, 301 (1996)

A.Gizon, J.Genevey, D.Bucurescu, Gh.Cata-Danil, J.Gizon, J.Inchaouh, D.Barneoud, T.von Egidy, C.F.Liang, B.M.Nyako, P.Paris, I.Penev, A.Plochocki, E.Ruchowska, C.A.Ur, B.Weiss, L.Zolnai

Level Structures of ^131,129Ce Observed in Beta Decay

RADIOACTIVITY ^131,129Pr(EC), (β⁺); measured Eγ, Iγ, γγ-, (X-ray)γ, e^-γ-coin, I(ce), T_1/2; deduced log ft. ^131,129Ce deduced levels, J, π. He-jet transport, on-line mass separation, Ge-detectors, magnetic spectrometer, Si(Li) detector. Interacting boson-fermion Model.

NUCLEAR STRUCTURE ^131,129Ce; calculated levels. Interacting Boson-Fermion Model.

doi: 10.1016/0375-9474(96)00178-9
Citations: PlumX Metrics

1996TA22      Appl.Radiat.Isot. 47, 981 (1996)

M.Taskaeva, E.Taskaev, I.Penev

On the Preparation of Efficiency Calibration Standards for Gamma-Ray Spectrometers

RADIOACTIVITY ²⁴¹Am(α); ¹⁰⁹Cd(EC); ¹³⁹Ce(β^-); ⁵⁷Co(EC); ⁶⁰Co(β^-); ¹³⁷Cs(β^-); ²⁰³Hg(β^-); ¹¹³Sn(EC); ⁸⁵Sr(EC); ⁸⁸Y(EC), (β⁺); ²¹⁰Pb(β^-), (α); analyzed γ detection efficiency vs different geometries, matrix materials density; deduced low-activity efficiency calibration standards preparation related features.

doi: 10.1016/S0969-8043(96)00096-6
Citations: PlumX Metrics

1995UZ01      Nucl.Instrum.Methods Phys.Res. B95, 276 (1995)

N.M.Uzunov, I.P.Penev, A.M.Artinian

A Method for quantitative Analysis of Potassium and Calcium using PIGE

NUCLEAR REACTIONS ⁴⁰Ca(p, p'γ), ³⁹K(p, γ), E not given; calculated Iγ measurement usefulness in quantitative analysis of K, Ca.

doi: 10.1016/0168-583X(94)00466-8
Citations: PlumX Metrics

1993GR08      J.Phys.(London) G19, 1179 (1993)

M.Grinberg, T.K.Dinh, Ch.Protochristov, I.Penev, C.Stoyanov, W.Andrejtscheff

Level Structure and Transition Probabilities in ¹⁴⁰Ce

RADIOACTIVITY ¹⁴⁰La(β^-); measured Eγ, Iγ, βγ-coin. ¹⁴⁰Ce deduced levels, J, π, γ-multipolarity, B(λ), δ, T_1/2, branching ratio. Quasiparticle-phonon model.

doi: 10.1088/0954-3899/19/8/008
Citations: PlumX Metrics

1989AD09      Izv.Akad.Nauk SSSR, Ser.Fiz. 53, 818 (1989); Bull.Acad.Sci.USSR, Phys.Ser. 53, No.5, 1 (1989)

I.Adam, Zh.T.Zhelev, D.Zakoutski, B.Kracik, I.Penev

Gamma-Ray Spectrum in ¹⁴⁷Eu → ¹⁴⁷Sm Decay

RADIOACTIVITY ¹⁴⁷Eu [from Er(p, F), E=680 MeV]; measured Eγ, Iγ. ¹⁴⁷Sm deduced levels, T_1/2, γ-multipolarity, ICC. Other data input.

1989AD10      Izv.Akad.Nauk SSSR, Ser.Fiz. 53, 824 (1989); Bull.Acad.Sci.USSR, Phys.Ser. 53, No.5, 6 (1989)

I.Adam, J.Dobes, Zh.T.Zhelev, D.Zakoutski, B.Kracik, M.Mikhailova, N.Navratil, I.Penev

Decay Scheme of ¹⁴⁷Eu and Structure of Excited States of ¹⁴⁷Sm

RADIOACTIVITY ¹⁴⁷Eu; analyzed data; deduced log ft. ¹⁴⁷Sm deduced levels, J, π, T_1/2, B(λ), δ(E2/M1). Model calculations.

1987AD02      Izv.Akad.Nauk SSSR, Ser.Fiz. 51, 2 (1987); Bull.Acad.Sci.USSR, Phys.Ser. 51, No.1, 1 (1987)

I.Adam, Zh.T.Zhelev, D.Zakoutski, B.Kratsik, M.M.Mikhailova, I.Penev

Excited States of ¹⁴⁹Eu from the Decay of ¹⁴⁹Gd

RADIOACTIVITY ¹⁴⁹Gd(EC), (α) [from Er(p, X), E=660 MeV]; measured Eγ, Iγ, γγ-coin; deduced log ft. ¹⁴⁹Eu deduced levels, J, π, ICC, γ-multipolarity. Ge(Li), NaI detectors.

1987AD08      Izv.Akad.Nauk SSSR, Ser.Fiz. 51, 1933 (1987); Bull.Acad.Sci.USSR, Phys.Ser. 51, No.11, 53 (1987)

I.Adam, Ya.Dobesh, Zh.T.Zhelev, B.Kratsik, I.Penev, P.Tlusty

Investigation of ¹⁴⁸Eu Decay and ¹⁴⁸Sm Level Structure

RADIOACTIVITY ¹⁴⁸Eu(EC), (β⁺), (α); measured Eγ, Iγ. ¹⁴⁸Sm deduced levels, J, π. Ge(Li), NaI(Tl) detectors.

1986AD06      Czech.J.Phys. B36, 1143 (1986)

J.Adam, J.Dobes, J.Fer, B.Kracik, A.Kugler, Zh.Zhelev, I.Penev, Ch.Stoyanov

Structure of the ¹⁴⁵Sm States from the ¹⁴⁵Eu Decay

RADIOACTIVITY ¹⁴⁵Eu(EC), (β^-); measured Eγ, Iγ; deduced log ft. ¹⁴⁵Sm deduced levels, J, π, γ-branching, ICC, γ multipolarity. Anti-Compton spectrometer. Quasi-particle-phonon, interacting boson-fermion models.

doi: 10.1007/BF01959607
Citations: PlumX Metrics

1984PE09      ATOMKI Kozlem. 26, 76 (1984)

I.Penev, Ch.Protochristov, V.Kolev

A Simple Method for Time Analysis Based on Commercial MCA

RADIOACTIVITY ¹⁴⁰La, ²¹⁴Pb(β^-); measured γγ-coin, γγ(t). Time analysis, multi-channel analyser techniques.

1984PE13      Z.Phys. A318, 213 (1984)

I.Penev, W.Andrejtscheff, Ch.Protochristow, Zh.Zhelev

A Retarded Intramultiplet M1 Transition in ²¹⁴Bi

RADIOACTIVITY ²¹⁴Pb(β^-) [from ²²⁶Ra decay chain]; measured γγ(t). ²¹⁴Bi deduced levels, T_1/2, γ-branching, B(M1), multiplet configuration.

doi: 10.1007/BF01413471
Citations: PlumX Metrics

1979EN06      Bulg.J.Phys. 6, 519 (1979)

M.Enikova, Ts.Vylov, Zh.Zhelev, N.Lebedev, L.Kalmykova, I.Penev

Experimental Study of the Excited States of Nuclei in the 50 ≤ Z, N ≤ 82 Region. 1. ¹³¹La - ¹³¹Ba Decay

RADIOACTIVITY ¹³¹La(β⁺)(EC); measured Eγ, Iγ, E X-ray, I X-ray, γγ-coin, I(ce). ¹³¹Ba deduced transitions, γ multipolarity.

1978AD07      Bulg.J.Phys. 5, 32 (1978)

J.Adam, S.Batsev, Ts.Vylov, M.Enikova, Zh.Zhelev, I.Penev, Ch.Stoyanov, M.E.Fominykh

Investigation of Nuclear Level Properties in the Transitional Region. Neutron Deficient Isotopes IV: Levels in ¹⁴⁸Sm populated in the decay of ¹⁴⁸Eu

RADIOACTIVITY ¹⁴⁸Eu(β⁺), (EC); measured Eγ, Iγ, E(ce), I(ce). ¹⁴⁸Sm deduced levels, J, π, multipolarity.

1977GR12      Acta Phys.Pol. B8, 317 (1977)

K.Y.Gromov, M.Honusek, I.Penev, H.-U.Siebert, J.Zuber, A.Latuszynski, A.W.Potempa, K.Zuber

Identification of ¹⁵⁹Yb Isotope

RADIOACTIVITY ¹⁵⁹Yb; measured T_1/2, Eγ, Iγ.

1976AD08      Bulg.J.Phys. 3, 144 (1976)

I.Adam, S.Batzev, Ts.Vylov, M.Enikova, Zh.Zhelev, I.Penev, Kh.Protokhristov, V.Fominykh

Study on the Properties of the Samarium. III. ¹⁴⁶Sm Levels Excited in ¹⁴⁶Eu Decay

1976GI15      Acta Phys.Pol. B7, 503 (1976)

V.I.Gilev, K.Y.Gromov, M.Honusek, A.Latuszynski, I.Penev, A.W.Potempa, H.-U.Siebert, J.Zuber, K.Zuber

Identification of ¹⁵⁸Yb, T₁/₂ = 0.2 min

RADIOACTIVITY ¹⁵⁸Yb [from Ta(p, X), E=660 MeV]; measured Eγ, T_1/2.

1976LA03      J.Inorg.Nucl.Chem. 38, 585 (1976)

A.Latuszynski, J.Mikulski, I.Penev, A.W.Potempa, A.Zielinski, K.Zuber, J.Zuber

The New ¹⁵⁷Tm Isotope, T₁/₂ = (3.6±0.3) min

RADIOACTIVITY ¹⁵⁷Tm; measured Eγ, Iγ, K X-rays, T_1/2. ¹⁵⁷Er deduced levels.

doi: 10.1016/0022-1902(76)80309-0
Citations: PlumX Metrics

1975BA70      Acta Phys.Pol. B6, 427 (1975)

G.Baier, M.Gonusek, K.-U.Zibert, K.Zuber, Y.Zuber, A.Lyatushinski, I.Penev, A.V.Potempa, K.Shtrusni, M.Yakhim

Identification of the ¹⁶⁰Yb Isotope, T₁/₂ = (4.8±0.2) min

RADIOACTIVITY ¹⁶⁰Yb; measured T_1/2, Eγ, Iγ.

1975GR35      Acta Phys.Pol. B6, 421 (1975)

K.Y.Gromov, K.Zuber, Y.Zuber, A.Lyatushinski, I.Penev, A.V.Potempa, A.Zelinski, V.Zhuk

The New Isotope ¹⁴⁸Dy. Investigation of ^{148, 150, 152}Dy Decay

RADIOACTIVITY ^148,150,152Dy; measured Eγ, Iγ, I(ce); deduced ICC, log ft. ¹⁴⁸Dy; measured T_1/2. ^148,150,152Tb deduced levels.

1972AM03      Yad.Fiz. 16, 881 (1972); Sov.J.Nucl.Phys. 16, 487 (1973)

B.Amov, T.Vandlik, J.Vandlik, T.Vylov, Z.Zhelev, N.G.Zaitseva, I.Penev, H.Tyrroff

Investigation of the Decay of Tl¹⁹⁴

RADIOACTIVITY ^194m,194Tl; measured Eγ, Iγ, I(ce). Deduced log ft, ICC. ¹⁹⁴Hg deduced levels, J, π, γ-multipolarities.

1971AM06      Izv.Akad.Nauk SSSR, Ser.Fiz. 35, 2266 (1971); Bull.Acad.Sci.USSR, Phys.Ser. 35, 2058 (1972)

B.Amov, T.Vylov, M.Enikova, Z.Zhelev, N.Lebedev, I.Penev, V.Fominykh, E.Hermann

Levels of ¹³²Ba Excited in the Decay of ¹³²La and ¹³²*La

RADIOACTIVITY ¹³²La[from Gd(660-MeV p, X)]; measured Eγ, Iγ, I(ce), γγ-coin. ¹³²Ba deduced levels, J, π.

1970GA32      Izv.Akad.Nauk SSSR, Ser.Fiz. 34, 2048 (1970); Bull.Acad.Sci.USSR, Phys.Ser. 34, 1825 (1971)

S.Gabrakov, Z.Zhelev, N.G.Zaitseva, I.Penev, S.S.Sabirov

The Radiation from ¹²⁰I, ¹²⁰*I, ¹²²I, and ¹²⁶I, and the Nature of the Levels in Even-Even Tellurium Isotopes (A = 120, 122, 124, 126)

RADIOACTIVITY ^120,122,126I[from Ta(660-MeV p, X)]; measured T_1/2, Eγ, Iγ, I(ce), Eβ, Iβ, βγ-, γγ-coin. ^120,122,126Te, ¹²⁶Xe deduced levels, J, π.

Note: The following list of authors and aliases matches the search parameter I.Penev: , I.P.PENEV