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Search: Author = A.Spalek

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2006VE03      Nucl.Instrum.Methods Phys.Res. A560, 352 (2006)

D.Venos, O.Dragoun, A.Spalek, M.Vobecky

Precise energy of the weak 32-keV gamma transition observed in ^83mKr decay

RADIOACTIVITY ⁸³Rb(EC), (β⁺) [from Kr(p, xn)]; ^83mKr(IT) [from ⁸³Rb decay]; measured Eγ, Iγ, X-ray spectra. ⁸³Kr deduced transition energy.

doi: 10.1016/j.nima.2005.12.213
Citations: PlumX Metrics

2002DR09      Nucl.Instrum.Methods Phys.Res. B194, 112 (2002)

O.Dragoun, A.Spalek, A.Kovalik, E.A.Yakushev, M.Rysavy, J.Frana, V.Brabec, A.F.Novgorodov, D.Liljequist

Scattering of 7.3 keV Conversion Electrons from a ⁵⁷Co Source Covered Gradually by Gold Absorbers of Various Thicknesses

RADIOACTIVITY ⁵⁷Co(EC); measured E(ce), I(ce), effect of gold absorber.

doi: 10.1016/S0168-583X(02)00688-2
Citations: PlumX Metrics

2002SP06      Nucl.Instrum.Methods Phys.Res. B196, 357 (2002)

A.Spalek, O.Dragoun, A.Kovalik, E.A.Yakushev, M.Rysavy, J.Frana, V.Brabec, A.F.Novgorodov, I.Cserny, J.Toth, D.Varga, L.Kover

Study of the conversion electron and XPS spectra of radioactive ⁵⁷Co sources

RADIOACTIVITY ⁵⁷Co(EC); measured conversion electron and X-ray spectra, influence of source backing material.

doi: 10.1016/S0168-583X(02)01340-X
Citations: PlumX Metrics

2000DR02      Appl.Radiat.Isot. 52, 387 (2000)

O.Dragoun, A.Spalek, M.Rysavy, A.Kovalik, E.A.Yakushev, V.Brabec, J.Frana, D.Venos

Improved Methods of Measurement and Analysis of Conversion Electron and β-Particle Spectra

RADIOACTIVITY ²⁴¹Pu(β^-); measured Eβ, Iβ; deduced electron scattering effects, source stability features.

doi: 10.1016/S0969-8043(99)00183-9
Citations: PlumX Metrics

2000DR13      J.Phys.(London) G26, 1461 (2000)

O.Dragoun, M.Rysavy, A.Spalek

Internal Conversion Coefficients for Superheavy Elements

NUCLEAR STRUCTURE Z=110-125; calculated ICC.

doi: 10.1088/0954-3899/26/10/302
Citations: PlumX Metrics

1999DR13      J.Phys.(London) G25, 1839 (1999)

O.Dragoun, A.Spalek, M.Rysavy, A.Kovalik, E.A.Yakushev, V.Brabec, A.F.Novgorodov, N.Dragounova, J.Rizek

Search for an Admixture of Heavy Neutrinos in the β-Decay of ²⁴¹Pu

RADIOACTIVITY ²⁴¹Pu(β^-); measured β spectrum; deduced heavy neutrino admixture upper limits.

doi: 10.1088/0954-3899/25/9/307
Citations: PlumX Metrics

1999MR04      Eur.Phys.J. A 5, 399 (1999)

J.Mrazek, M.Honusek, A.Spalek, J.Bielcik, J.Slivova, J.Adam, A.A.Pasternak

The Structure of ⁹⁹Ru from (α, 3n) Reaction

NUCLEAR REACTIONS ⁹⁸Mo(α, 3n), E=38 MeV; measured Eγ, Iγ(θ), γγ-coin, DSA. ⁹⁹Ru deduced high-spin levels, J, π, mean lifetimes.

doi: 10.1007/s100500050303
Citations: PlumX Metrics
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1998RY06      Prog.Part.Nucl.Phys. 40, 335 (1998)

M.Rysavy, V.Brabec, O.Dragoun, N.Dragounova, A.Spalek, J.Rizek, A.Kovalik, A.F.Novgorodov

Measurements of ²⁴¹Pu β-Spectrum in Search for Admixture of Massive Neutrinos

RADIOACTIVITY ²⁴¹Pu(β^-); measured β spectra; deduced massive neutrino admixture upper limit.

doi: 10.1016/S0146-6410(98)00043-X
Citations: PlumX Metrics

1995EF01      Yad.Fiz. 58, No 1, 3 (1995); Phys.Atomic Nuclei 58, 1 (1995)

A.D.Efimov, M.F.Kudoyarov, A.S.Li, A.A.Pasternak, I.Adam, M.Honusek, A.Spalek

Lifetimes and Structure of Excited States of the ¹⁰²Ru Yrast Band

NUCLEAR REACTIONS ¹⁰⁰Mo(α, 2n), E=17-27 MeV; measured γ-spectra, γ(θ). ¹⁰²Ru deduced levels, J, π, T_1/2, B(λ). Interacting boson model.

1994MU26      Z.Naturforsch. 49a, 874 (1994)

S.Muller, S.Chen, H.Daniel, O.Dragoun, N.Dragounova, H.Hagn, E.Hechtl, K.-H.Hiddemann, A.Spalek

Search for an Admixture of a 17 keV Neutrino in the β Decay of ³⁵S

RADIOACTIVITY ³⁵S(β^-); measured β spectra; deduced 17 keV neutrino admixture upper limit, electron scattering neglect related uncertainities.

1993SP06      J.Phys.(London) G19, 2071 (1993)

A.Spalek, O.Dragoun

The Effect of Electron Backscattering on the Shape of the ⁶³Ni β-Ray Spectrum

RADIOACTIVITY ⁶³Ni(β^-); calculated backscattered electron energy distributions. Monte Carlo simulations.

doi: 10.1088/0954-3899/19/12/012
Citations: PlumX Metrics

1989AD01      Z.Phys. A332, 143 (1989)

J.Adam, M.Honusek, A.Spalek, D.N.Doinikov, A.D.Efimov, M.F.Kudojarov, I.Kh.Lemberg, A.A.Pasternak, O.K.Vorov, U.Y.Zhovliev

Lifetimes and Structure of ⁷⁴Se Excited States

NUCLEAR REACTIONS ⁷³Ge(α, 3nγ), E=40 MeV; ⁶⁵Cu(¹²C, 2np), E=42 MeV; measured γ-spectra, DSA. ⁷⁴Se deduced levels, T_1/2, J, π, B(λ).

1988SP06      Nucl.Instrum.Methods Phys.Res. A264, 410 (1988)

A.Spalek

Direct Monte Carlo Simulation of Scattering Processes of keV Conversion Electrons in a Radioactive Source

RADIOACTIVITY ²⁰¹Tl; calculated I(ce) spectra. Monte Carlo simulation.

doi: 10.1016/0168-9002(88)90932-1
Citations: PlumX Metrics

1987DR06      Z.Phys. A326, 279 (1987)

O.Dragoun, V.Brabec, M.Rysavy, A.Spalek, K.Freitag

Some Nuclear and Atomic Properties of ²⁰¹Hg Determined by Conversion Electron Spectroscopy

RADIOACTIVITY ²⁰¹Tl(EC); measured ce spectra, I(ce). ²⁰¹Hg levels deduced ICC ratios, B(M1), δ, natural line widths. Electrostatic spectrometer. Theoretical calculations.

1985AD11      Nucl.Instrum.Methods 238, 79 (1985)

J.Adam, D.Venos, A.Kuklik, A.Spalek, V.G.Sandukovsky, B.P.Osipenko

Application of Position-Sensitive Semiconductor Detectors in a Magnetic Beta-Spectrometer

RADIOACTIVITY ¹³⁷Cs(β^-); measured I(ce) following β-decay. Magnetic β-spectrometer, continuous position sensitive semi-conductor detector.

doi: 10.1016/0168-9002(85)91029-0
Citations: PlumX Metrics

1979AD08      Izv.Akad.Nauk SSSR, Ser.Fiz. 43, 1089 (1979); Bull.Acad.Sci.USSR, Phys.Ser. 43, No.5, 167 (1979)

I.Adam, A.Budzyak, M.Gonusek, V.M.Gorozhankin, B.S.Dzhelepov, V.G.Kalinnikov, A.V.Kudryavtseva, V.V.Kuznetsov, V.I.Stegailov, A.Spalek

Radioactive Decay ¹⁵⁹Er → ¹⁵⁹Ho

RADIOACTIVITY ¹⁵⁹Er; measured Eγ, Iγ, I(ce), Eβ, Iβ, γγ-coin. ¹⁵⁹Ho deduced ICC, γ-multipolarity.

1978AD04      Czech.J.Phys. B28, 825 (1978)

J.Adam, J.Jursik, A.Kuklik, L.Maly, A.Spalek, D.Venos

The Population of the Nuclear States in ¹⁸¹Re by Means of ¹⁸¹Ta(³He, 3nγ) Reaction

NUCLEAR REACTIONS ¹⁸¹Ta(³He, 3nγ), E=24, 28 MeV; measured Eγ, Iγ, γγ-coin. ¹⁸¹Re deduced levels, J, π, K.

doi: 10.1007/BF01596005
Citations: PlumX Metrics

1978AD05      Czech.J.Phys. B28, 857 (1978)

J.Adam, A.Kuklik, A.Spalek, D.Venos, M.J.Kuznetsova

Gamma Radiation from the ²⁰⁹Bi(³He, 3nγ)²⁰⁹At Reaction

NUCLEAR REACTIONS ²⁰⁹Bi(³He, 3nγ), E=26, 28 MeV; measured Eγ, Iγ, γγ-coin. ²⁰⁹At deduced levels, J, π. Cluster-vibrational model interpretation.

doi: 10.1007/BF01600093
Citations: PlumX Metrics

1977DR06      Z.Phys. A281, 347 (1977)

O.Dragoun, V.Brabec, M.Rysavy, A.Spalek

Internal Conversion Coefficients in the Hartree-Fock Atomic Model. Calculations and Experiments for ¹⁹⁹Hg

RADIOACTIVITY ¹⁹⁹Au; measured I(ce). ¹⁹⁹Hg transitions deduced λ, ICC, δ.

doi: 10.1007/BF01408182
Citations: PlumX Metrics

1977SP03      Nucl.Phys. A280, 115 (1977)

A.Spalek, J.Adam, J.Jursik, A.Kuklik, L.Maly, D.Venos, P.Simecek, G.Winter, L.Funke

Levels of ⁸⁹Nb Populated in the ⁸⁹Y(³He, 3nγ) Reaction

NUCLEAR REACTIONS ⁸⁹Y(³He, 3nγ), E=20-28 MeV; measured Eγ, Iγ(E(³He), θ), γγ-coin, ³He γ-delay. ⁸⁹Nb deduced levels, J, π, T_1/2. Ge(Li) detectors.

doi: 10.1016/0375-9474(77)90298-6
Citations: PlumX Metrics

1977SP04      Czech.J.Phys. B27, 29 (1977)

A.Spalek, J.Adam, L.Maly, D.Venos, A.Kuklik, L.Funke, P.Kemnitz, I.Forsblom, S.A.Hjorth, V.G.Kalinnikov

Energy Levels in ¹⁵⁹Ho from ¹⁵⁹Tb(α, 4nγ)¹⁵⁹Ho and ¹⁵⁹Tb(³He, 3nγ)¹⁵⁹Ho Reactions

NUCLEAR REACTIONS ¹⁵⁹Tb(α, 4nγ), E=43-51 MeV; ¹⁵⁹Tb(³He, 3nγ), E=20-28 MeV; measured Eγ, Iγ, γγ-coin. ¹⁵⁹Ho deduced levels, J, π, K.

doi: 10.1007/BF01587482
Citations: PlumX Metrics

1977VE02      Nucl.Phys. A280, 125 (1977)

D.Venos, J.Adam, J.Jursik, A.Kuklik, L.Maly, A.Spalek, L.Funke, P.Kemnitz

Energy Levels in ¹⁹⁷Tl Populated in the ¹⁹⁷Au(³He, 3nγ)¹⁹⁷Tl Reaction

NUCLEAR REACTIONS ¹⁹⁷Au(³He, 3nγ), E=24-28 MeV; measured Eγ, Iγ(E, θ), γγ-coin, ³Heγ-delay. ¹⁹⁷Tl deduced levels, J, π, δ. Ge(Li) detectors.

doi: 10.1016/0375-9474(77)90299-8
Citations: PlumX Metrics

1975FO11      Nucl.Phys. A252, 315 (1975)

I.Forsblom, S.A.Hjorth, A.Spalek

Anomalous Rotational Energies and Transition Probabilities at High Spin in the Ground-State Band in ¹⁵⁹Ho

NUCLEAR REACTIONS ¹⁵⁹Tb(α, 4nγ), E=43-51 MeV; measured Eγ, Iγ(Eα, θ), γγ-coin. ¹⁵⁹Ho deduced levels, I, π, moment of inertia, rotational angular velocity, γ-branching, Coriolis calculation.

doi: 10.1016/0375-9474(75)90502-3
Citations: PlumX Metrics

1971FR03      Nucl.Phys. A165, 625 (1971)

J.Frana, A.Spalek, M.Fiser, A.Kokes

Decay of ^195mHg and ¹⁹⁵Hg to Levels in ¹⁹⁵Au

RADIOACTIVITY ^195,195mHg[from Pt(³He, xn)]; measured Eγ, Iγ, E(ce), I(ce), ICC, γγ-coin; deduced log ft. ¹⁹⁵Au deduced levels, J, π, EC branching ratios, γ-mixing. Natural Pt target.

doi: 10.1016/0375-9474(71)90475-1
Citations: PlumX Metrics

1970PL01      Z.Phys. 233, 122 (1970)

Z.Plajner, J.Frana, I.Rezanka, A.Spalek, M.Fiser

Decay of ^193mHg

RADIOACTIVITY ^193mHg; measured Eγ, Iγ, γγ-coin; deduced log ft, Iβ. ¹⁹³Au deduced levels, J, π, ICC, γ-multipolarity.

doi: 10.1007/BF01396029
Citations: PlumX Metrics

1970PL02      Czech.J.Phys. 20B, 132 (1970)

Z.Plajner, J.Frana, I.Rezanka, A.Spalek, M.Fiser, M.Vobecky

Gamma-Radiation of ¹⁹³Au

RADIOACTIVITY ¹⁹³Au; measured Eγ, Iγ. ¹⁹³Pt deduced levels, ICC, γ-multipolarity, J, π.

doi: 10.1007/BF01698116
Citations: PlumX Metrics

1970PL05      Czech.J.Phys. 20B, 917 (1970)

Z.Plajner, I.Rezanka, A.Spalek, J.Frana, M.Josovic, M.Fiser

Transition Multipolarities in the Decay of ^197mHg

RADIOACTIVITY ^197mHg; measured Eγ, Iγ, I(ce); deduced ICC, γ-multipolarity. ¹⁹⁷Au deduced transitions, ICC, γ-multipolarity.

doi: 10.1007/BF01691086
Citations: PlumX Metrics

1970PL09      Czech.J.Phys. 20B, 840 (1970)

Z.Plajner, J.Frana, A.Spalek, M.Vobecky, M.Fiser

Gamma-Ray Spectrum of ¹⁹²Au

RADIOACTIVITY ¹⁹²Au; measured Eγ, Iγ; deduced ICC, log ft. ¹⁹²Pt deduced levels, J, π, λ.

1968SP05      Nucl.Phys. A118, 161 (1968)

A.Spalek, I.Rezanka, J.Frana, J.Jursik, M.Vorbecky

The Decay of ¹³¹La

RADIOACTIVITY ¹³¹La [from ¹³⁰Ba(d, n)]; measured Eγ, Iγ, I(ce), γγ-coin. ¹³¹Ba deduced levels, log ft, J, π. ¹³¹La ground state deduced J, π. Enriched ¹³⁰Ba target, Ge(Li) detector.

doi: 10.1016/0375-9474(68)90194-2
Citations: PlumX Metrics

1967FR02      Nucl.Phys. A94, 366(1967)

J.Frana, I.Rezanka, Z.Plajner, A.Spalek, J.Jursik, M.Vobecky, A.Mastalka, L.Funke, H.Graber, H.Sodan

The Decay of ¹³²La

RADIOACTIVITY ¹³²La [from ¹³²Ba(d, 2n), (p, n), Ce(p, X)]; measured Eβ, Eγ, Iβ, Iγ, I(ce), βγ-, γγcoin. ¹³²Ba deduced levels, log ft, J, π. Enriched ba target.

doi: 10.1016/0375-9474(67)90010-3
Citations: PlumX Metrics

1967FR13      Czech.J.Phys. 17B, 1048 (1967)

J.Frana, I.Rezanka, A.Spalek, A.Mastalka

Gamma-Radiation of ¹³⁶Cs

NUCLEAR STRUCTURE ¹³⁶Cs; measured not abstracted; deduced nuclear properties.

1967RE08      Czech.J.Phys. 17B, 1050 (1967)

I.Rezanka, A.Spalek, J.Frana, J.Jursik

Gamma-Radiation of ¹³⁵Ce

NUCLEAR STRUCTURE ¹³⁵Ce; measured not abstracted; deduced nuclear properties.

1967SP08      Z.Phys. 204, 129 (1967)

A.Spalek, I.Rezanka, J.Frana, A.Mastalka

The Decay of ¹²⁷Cs

NUCLEAR STRUCTURE ¹²⁷Cs; measured not abstracted; deduced nuclear properties.

doi: 10.1007/BF01326128
Citations: PlumX Metrics

1966RE10      Nucl.Phys. 89, 609 (1966)

I.Rezanka, A.Spalek, J.Frana, A.Mastalka

Radioactive Decay of ¹²⁹Cs

RADIOACTIVITY ¹²⁹Cs[from ¹²⁷I(α, 2n), from ce(p, X)]; measured Eγ, Iγ, I(ce); deduced log ft. ¹²⁹Xe deduced levels, J, π. Natural targets.

doi: 10.1016/0029-5582(66)90935-7
Citations: PlumX Metrics

1964FR02      Czech.J.Phys. 14B, 678 (1964)

J.Frana, I.Rezanka, A.Spalek

Decay of Cs^134m

NUCLEAR STRUCTURE ¹³⁴Cs; measured not abstracted; deduced nuclear properties.