NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = A.Kovalik Found 59 matches. 2023IN01 Nucl.Phys. A1035, 122666 (2023) A.Kh.Inoyatov, D.Venos, A.Kovalik Experimental determinations of the energy of the 9.4 keV (M1+E2) nuclear transition in 83Kr and the Kr electron binding energies in different matrices by ICES method RADIOACTIVITY 83Sr(EC), (β+), 83Rb(EC); measured decay products, Eβ, Iβ; deduced β spectra, the energy of the 9.4 keV (M1+E2) nuclear transition in 83Kr with high precision, conversion electron lines. The internal conversion electron spectroscopy (ICES) method. Phasotron particle accelerator, the JINR in Dubna, Russia.
doi: 10.1016/j.nuclphysa.2023.122666
2021KO34 Phys.Lett. B 820, 136593 (2021) A.Kovalik, A.Kh.Inoyatov, L.L.Perevoshchikov, M.Rysavy, D.V.Filosofov, P.Alexa, J.Kvasil The first experimental evidence for the (M1 + E2) mixed character of the 9.2 keV transition in 227Th RADIOACTIVITY 227Ac(β-); measured decay products, Eβ, Iβ; deduced internal conversion coefficients, spectroscopic admixture parameter. Comparison with theoretical calculations.
doi: 10.1016/j.physletb.2021.136593
2021KO39 Eur.Phys.J. A 57, 285 (2021) A.Kovalik, A.Kh.Inoyatov, L.L.Perevoshchikov, M.Rysavy, D.V.Filosofov, J.A.Dadakhanov Experimental investigation of the 9.2 and 24.3 keV nuclear transitions in 227Th RADIOACTIVITY 227Ac(β-); measured decay products, Eβ, Iβ, Eγ, Iγ; deduced electron spectra, subshell conversion electron lines, γ-ray energies, transition multipolarities, subshell internal conversion coefficients (ICC), widths. Comparison with available data.
doi: 10.1140/epja/s10050-021-00577-7
2019KO17 Eur.Phys.J. A 55, 131 (2019) A.Kovalik, A.Kh.Inoyatov, L.L.Perevoshchikov, M.Rysavy, D.V.Filosofov, J.A.Dadakhanov An experimental investigation of the 15.1 keV M1 + E2 nuclear transition in 227Th from the β- decay of 227Ac RADIOACTIVITY 227Ac(β-); measured decay products, Eβ, Iβ, M-, N- and O-subshell conversion electrons using a high resolution combined electrostatic electron spectrometer at DLNP-JINR-Dubna; deduced precise transition energy and M1+E2 mixing ratio for the 15.1-keV transition in 227Th from its second excited state.
doi: 10.1140/epja/i2019-12812-5
2016IN02 Eur.Phys.J. A 52, 133 (2016) A.Kh.Inoyatov, A.Kovalik, D.V.Filosofov, M.Rysavy, L.L.Perevoshchikov, A.Baimukhanova Improved energy of the 21.5 keV M1 + E2 nuclear transition in 151Eu NUCLEAR REACTIONS 151Gd(e, γ)151Eu, E=0-50000 eV; measured 21.5 keV M1+E2 transition using internal conversion electron spectroscopy; deduced L1, 2, L3 conversion electron lines energies, δ(E2/M1) multipolarity admixture, parameters; calculated internal conversion coefficients. Compared with other results.
doi: 10.1140/epja/i2016-16133-y
2015BR14 Phys.Atomic Nuclei 78, 740 (2015); Yad.Fiz. 78, 791 (2015) Ch.Briancon, V.B.Brudanin, V.G.Egorov, J.M.Jose, A.A.Klimenko, A.Kovalik, S.V.Rosov, E.N.Rukhadze, N.I.Rukhadze, A.V.Salamatin, V.V.Timkin, L.Fajt, R.Hodak, F.Simkovic, Yu.A.Shitov, M.Spavorova, I.Stekl, E.A.Yakushev New search for double electron capture in 106Cd decay with the TGV-2 spectrometer RADIOACTIVITY 106Cd(2EC); measured decay products, Eγ, Iγ, X-rays; deduced T1/2 limits.
doi: 10.1134/S1063778815060058
2015IN02 Eur.Phys.J. A 51, 65 (2015) A.Kh.Inoyatov, A.Kovalik, D.V.Filosofov, M.Rysavy, L.L.Perevoshchikov, Yu.B.Gurov First direct high-precision energy determination for the 8.4 and 20.7 keV nuclear transitions in 169Tm RADIOACTIVITY 169Yb(EC); measured internal conversion electron lines using ICES (Internal Conversion electron spectroscopy) to individual subshells; calculated internal conversion coefficients with and without nuclear structure effect. 169Tm deduced transition energy for 8.4 keV M1+E2, 20.7 keV M1+E2 and 63.1 E1 transitions, internal conversion coefficients for mixed M1+E2 transitions. Compared to other data and calculations.
doi: 10.1140/epja/i2015-15065-4
2014IN02 Eur.Phys.J. A 50, 59 (2014) A.Kh.Inoyatov, M.Rysavy, A.Kovalik, D.V.Filosofov, V.S.Zhdanov, Yu.V.Yushkevich Improved energies for the 5.2 keV M1 and 42.0 keV M2 nuclear transitions in 83Rb RADIOACTIVITY 83Sr(EC); measured Eβ, Iβ, electron conversion lines using high-resolution electrostatic spectrometer. 83Rb calculated IC coefficients; deduced γ transition energies, multipolarity, natural atomic level widths.
doi: 10.1140/epja/i2014-14059-0
2012RU07 Nucl.Phys. B(Proc.Supp.) S229-232, 478 (2012) N.I.Rukhadze, Ch.Briancon, V.B.Brudanin, P.Cermak, V.G.Egorov, A.A.Klimenko, A.Kovalik, E.N.Rukhadze, Yu.A.Shitov, F.Simkovic, I.Stekl, V.V.Timkin Experiment TGV-2 - Search for double beta decay of 106Cd RADIOACTIVITY 106Cd(2EC); measured decay products, EnullIγ, X-rays; deduced T1/2 limits. TGV-2 spectrometer.
doi: 10.1016/j.nuclphysbps.2012.09.115
2012RU08 J.Phys.:Conf.Ser. 375, 042020 (2012) N.I.Rukhadze, A.M.Bakalyarov, Ch.Briancon, V.B.Brudanin, P.cermak, V.G.Egorov, A.A.Klimenko, A.Kovalik, V.I.Lebedev, E.N.Rukhadze, F.Mamedov, Y.A.Shitov, F.Simkovic, I.Stekl, V.V.Timkin, S.V.Zhukov Experiment TGV-2. Search for double beta decay of 106Cd RADIOACTIVITY 106Cd(2EC); measured decay products, EnullIγ; deduced T1/2 limits. Comparison with available data.
doi: 10.1088/1742-6596/375/1/042020
2011IN04 Eur.Phys.J. A 47, 84 (2011) A.Kh.Inoyatov, L.L.Perevoshchikov, A.Kovalik, O.Dragoun, D.V.Filosofov Experimental investigation of ligand effects on the conversion electron spectrum of the 22.5 keV M1 + E2 nuclear transition in 149Sm RADIOACTIVITY 149Sm(EC)[from 149Eu electron capture]; measured conversion electrons, X-rays from excited 149Sm using Eu compounds as targets; deduced energy differences, relative intensities.
doi: 10.1140/epja/i2011-11084-5
2011RU05 Nucl.Phys. A852, 197 (2011) N.I.Rukhadze, A.M.Bakalyarov, Ch.Briancon, V.B.Brudanin, P.Cermak, V.G.Egorov, A.A.Klimenko, A.Kovalik, V.I.Lebedev, F.Mamedov, Yu.A.Shitov, F.Simkovic, I.Stekl, V.V.Timkin, S.V.Zhukov New limits on double beta decay of 106Cd RADIOACTIVITY 106Cd(2EC); measured E(K X-ray), I(K X-ray), Eγ, Iγ, (K X-ray)(K X-ray)-, (K X-ray)γ-coin using TGV-2 spectrometer; deduced T1/2 lower limits for double- and zero-neutrino accompanied 2EC-decay. Comparison with calculations. Modane underground laboratory.
doi: 10.1016/j.nuclphysa.2011.01.006
2011RU10 Bull.Rus.Acad.Sci.Phys. 75, 879 (2011) N.I.Rukhadze, Ch.Briancon, V.B.Brudanin, V.G.Egorov, A.A.Klimenko, A.Kovalik, V.V.Timkin, P.Chermak, Yu.A.Shitov, F.Simkovic, I.Stekl Search for double beta decay of 106Cd RADIOACTIVITY 106Cd(2β+), (β+EC), (2EC); measured decay products, Eγ, Iγ, X-rays; deduced T1/2 limits. TGV-2 multidetector germanium spectrometer.
doi: 10.3103/S1062873811070318
2010RU04 Bull.Rus.Acad.Sci.Phys. 74, 821 (2010); Izv.Akad.Nauk RAS, Ser.Fiz 74, 864 (2010) N.I.Rukhadze, A.M.Bakalyarov, Ch.Briancon, V.B.Brudanin, Ts.Vylov, V.G.Egorov, S.V.Zhukov, D.R.Zinatulina, A.A.Klimenko, A.Kovalik, V.I.Lebedev, V.V.Timkin, P.Cermak, I.Stekl, Yu.A.Shitov Search for double beta decay of 106Cd in the TGV-2 experiment RADIOACTIVITY 106Cd(2β); measured Eγ, Iγ; deduced T1/2.
doi: 10.3103/S1062873810060195
2009KR01 J.Radioanal.Nucl.Chem. 279, 567 (2009) M.I.Krivopustov, A.V.Pavliouk, A.D.Kovalenko, I.I.Mariin, A.F.Elishev, J.Adam, A.Kovalik, Yu.A.Batusov, V.G.Kalinnikov, V.B.Brudanin, P.Chaloun, V.M.Tsoupko-Sitnikov, A.A.Solnyshkin, V.I.Stegailov, Sh.Gerbish, O.Svoboda, Z.Dubnicka, M.Kala, M.Kloc, A.Krasa, A.Kugler, M.Majerle, V.Wagner, R.Brandt, W.Westmeier, H.Robotham, K.Siemon, M.Bielewicz, S.Kilim, M.Szuta, E.Strugalska-Gola, A.Wojeciechowski, S.R.Hashemi-Nezhad, M.Manolopoulou, M.Fragopolou, S.Stoulos, M.Zamani-Valasiadou, S.Jokic, K.Katovsky, O.Schastny, I.V.Zhuk, A.S.Potapenko, A.A.Safronova, Zh.A.Lukashevich, V.A.Voronko, V.V.Sotnikov, V.V.Sidorenko, W.Ensinger, H.D.Severin, S.Batsev, L.Kostov, Kh.Protokhristov, Ch.Stoyanov, O.Yordanov, P.K.Zhivkov, A.V.Kumar, M.Sharma, A.M.Khilmanovich, B.A.Marcinkevich, S.V.Korneev, Ts.Damdinsuren, Ts.Togoo, H.Kumawat First results studying the transmutation of 129I, 237Np, 238Pu, and 239Pu in the irradiation of an extended natU/Pb-assembly with 2.52 GeV deuterons
doi: 10.1007/s10967-007-7265-1
2009RU07 Bull.Rus.Acad.Sci.Phys. 73, 741 (2009); Izv.Akad.Nauk RAS, Ser.Fiz 73, 788 (2009) N.I.Rukhadze, A.M.Bakalyarov, Ch.Briancon, V.B.Brudanin, Ts.Vylov, V.G.Egorov, S.V.Zhukov, D.R.Zinatulina, A.A.Klimenko, A.Kovalik, V.I.Lebedev, V.V.Timkin, P.Cermak, I.Stekl, Yu.A.Shitov New search for 0νEC/EC and 2νEC/EC decay of 106Cd RADIOACTIVITY 106Cd(2EC); measured Eγ, Iγ; deduced 2EC-decay T1/2 limits. TGV-2 spectrometer.
doi: 10.3103/S1062873809060112
2008RU08 Bull.Rus.Acad.Sci.Phys. 72, 731 (2008) N.I.Rukhadze, P.Benes, Ch.Briancon, V.B.Brudanin, Ts.Vylov, K.N.Gusev, V.G.Egorov, A.A.Klimenko, V.E.Kovalenko, A.Kovalik, A.V.Salamatin, V.V.Timkin, P.Cermak, I.Stekl Investigation of the 2ν EC/EC Decay of 106Cd RADIOACTIVITY 106Cd(2β+), (β+EC), (2EC); measured T1/2, Eγ, Iγ using the Telescope Germanium Vertical (TGV-2) spectrometer.
doi: 10.3103/S1062873808060038
2007IN06 J. Electron Spectrosc. Relat. Phenom. 154, 79 (2007) A.Inoyatov, D.V.Filosofov, V.M.Gorozhankin, A.Kovalik, N.A.Lebedev, A.V.Lubashevskiy, A.F.Novgorodov, L.L.Perevoshchikov, Ts.Vylov, E.A.Yakushev The KLL Auger spectrum of neon from the EC-decay of 22Na RADIOACTIVITY 22Na(EC) [from 27Al(p, 3n3p), E=85 MeV]; measured decay products, Eβ, Iβ; deduced low energy KLL Auger electrons spectra, relative intensities and energies, no influence of solid state effects on relative intensities of the KLL transitions. Comparison with available data.
doi: 10.1016/j.elspec.2006.12.023
2006BR32 Bull.Rus.Acad.Sci.Phys. 70, 316 (2006) V.B.Brudanin, N.I.Rukhadze, V.G.Egorov, Ch.Briancon, P.Benes, Ts.Vylov, K.N.Gusev, F.A.Danevich, A.A.Klimenko, V.E.Kovalenko, A.Kovalik, A.V.Salamatin, V.V.Timkin, V.I.Tretyak, P.Chermak, I.Stekl Search for double electron capture of 106Cd in TGV-2 experiment RADIOACTIVITY 106Cd(β+EC), (2EC); measured 2νββ-decay T1/2 lower limits.
2006IN03 J. Electron Spectrosc. Relat. Phenom. 151, 193 (2006) A.Inoyatov, A.V.Lubashevsky, A.Kovalik, E.A.Yakushev, D.V.Filosofov, Yu.S.Borodin, V.M.Gorozhankin, A.F.Novgorodov, Ts.Vylov, V.S.Zhdanov A detailed experimental investigation of the KMM + KMN + KNN Auger electron spectrum of 111Cd from the EC-decay of 111In RADIOACTIVITY 111In(EC) [from 109Ag(α, 2n), E=30 MeV]; measured decay products, Eβ, Iβ; deduced Auger electron spectra energies and intensities, further needs for theoretical investigations. Comparison with available data.
doi: 10.1016/j.elspec.2005.11.004
2006RU15 Phys.Atomic Nuclei 69, 2117 (2006) N.I.Rukhadze, P.Benes, Ch.Briancon, V.B.Brudanin, P.Cermak, F.A.Danevich, V.G.Egorov, K.N.Gusev, A.A.Klimenko, V.E.Kovalenko, A.Kovalik, A.V.Salamatin, I.Stekl, V.V.Timkin, V.I.Tretyak, Ts.Vylov Search for Double Electron Capture of 106Cd RADIOACTIVITY 106Cd(β+EC), (2EC); measured 2ν-accompanied decay T1/2 lower limits.
doi: 10.1134/S1063778806120167
2006ST11 Czech.J.Phys. 56, 505 (2006) I.Stekl, P.Cermak, P.Benes, V.B.Brudanin, K.N.Gusev, V.G.Egorov, A.A.Klimenko, V.E.Kovalenko, A.Kovalik, N.I.Rukhadze, A.V.Salamatin, V.V.Timkin, Ts.Vylov, Ch.Briancon, F.Simkovic First results for the measurement of double-electron capture of 106Cd in the experiment TGV II RADIOACTIVITY 106Cd(2EC); measured 2νββ-decay T1/2 lower limits for transitions to ground and excited states.
doi: 10.1007/s10582-006-0114-6
2005KR03 Eur.Phys.J. C 40, 447 (2005) Ch.Kraus, B.Bornschein, L.Bornschein, J.Bonn, B.Flatt, A.Kovalik, B.Ostrick, E.W.Otten, J.P.Schall, Th.Thummler, Ch.Weinheimer Final results from phase II of the Mainz neutrino mass search in tritium β decay RADIOACTIVITY 3H(β-); measured Eβ; deduced neutrino mass limit.
doi: 10.1140/epjc/s2005-02139-7
2005YA03 Appl.Radiat.Isot. 62, 451 (2005) E.A.Yakushev, A.Kovalik, D.V.Filosofov, N.A.Korolev, N.A.Lebedev, A.V.Lubashevsky, F.Rosch, A.F.Novgorodov An experimental comparison of the K- and L-Auger electron spectra generated in the decays of 140Nd and 111In RADIOACTIVITY 111In, 140Nd(EC); measured Auger electron spectra, relative intensities.
doi: 10.1016/j.apradiso.2004.06.012
2003BR25 Bull.Rus.Acad.Sci.Phys. 67, 680 (2003) V.B.Brudanin, N.I.Rukhadze, Ch.Briancon, P.Benesh, S.I.Vasiliev, Ts.Vylov, K.N.Gusev, V.G.Egorov, A.K.Kachalkin, A.A.Klimenko, V.E.Kovalenko, A.Kovalik, A.V.Salamatin, V.G.Sandukovsky, A.A.Smolnikov, V.V.Timkin, T.V.Trofimov, P.Cermak, M.V.Shirchenko, Yu.A.Shitov, I.Stekl Low-background multidetector spectrometer TGV-2 for investigation of double β-decay
2003KR17 Nucl.Phys. A721, 533c (2003) Ch.Kraus, J.Bonn, B.Bornschein, L.Bornschein, B.Flatt, A.Kovalik, B.Muller, E.W.Otten, J.P.Schall, TH.Thummler, Ch.Weinheimer Latest results form the Mainz Neutrino Mass Experiment RADIOACTIVITY 3H(β-); measured Eβ; deduced neutrino mass limit.
doi: 10.1016/S0375-9474(03)01117-5
2002BA33 Nucl.Phys. A700, 17 (2002) A.Bakalyarov, A.Balysh, A.Barabash, Ch.Briancon, V.Brudanin, V.Egorov, F.Hubert, Ph.Hubert, A.Kovalik, V.I.Lebedev, N.I.Rukhadze, I.Stekl, V.Umatov, Ts.Vylov Search for β- and β-β- Decays of 48Ca RADIOACTIVITY 48Ca(β-), (2β-); measured T1/2 lower limits. Comparison with model predictions.
doi: 10.1016/S0375-9474(01)01306-9
2002BB03 Pisma Zh.Eksp.Teor.Fiz. 76, 643 (2002); JETP Lett. 76, 545 (2002) A.Bakalyarov, A.Balysh, A.S.Barabash, P.Benes, C.Briancon, V.Brudanin, P.Cermak, V.Egorov, F.Hubert, Ph.Hubert, N.A.Korolev, V.N.Kosjakov, A.Kovalik, N.A.Lebedev, V.I.Lebedev, A.F.Novgorodov, N.I.Rukhadze, N.I.Stekl, V.V.Timkin, I.E.Veleshko, Ts.Vylov, V.I.Umatov Improved Limits on β- and β-β- Decays of 48Ca RADIOACTIVITY 48Ca(β-), (2β-); measured T1/2 lower limits. Comparison with previous results, model predictions.
doi: 10.1134/1.1538286
2002BO27 Prog.Part.Nucl.Phys. 48, 133 (2002) J.Bonn, B.Bornschein, L.Bornschein, L.Fickinger, B.Flatt, A.Kovalik, Ch.Kraus, B.Muller, E.W.Otten, J.P.Schall, Th.Thummler, H.Ulrich, Ch.Weinheimer, E.W.Otten Results from the Mainz Neutrino Mass Experiment RADIOACTIVITY 3H(β-); analyzed Eβ; deduced neutrino mass.
doi: 10.1016/S0146-6410(02)00119-9
2002CE05 Czech.J.Phys. 52, 583 (2002) P.Cermak, I.Stekl, P.Benes, V.B.Brudanin, N.I.Rukhadze, V.G.Egorov, V.E.Kovalenko, A.Kovalik, R.Pismenniy, A.V.Salamatin, V.Timkin, Ts.Vylov, D.Venos Distinguishing between Electrons and γ-Rays in Experiment TGV using a Pulse Rise Time
doi: 10.1023/A:1015373713812
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
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
2002ST17 Czech.J.Phys. 52, 541 (2002) I.Stekl, P.Cermak, P.Benes, V.B.Brudanin, N.I.Rukhadze, V.G.Egorov, V.E.Kovalenko, A.Kovalik, A.V.Salamatin, Ts.Vylov, F.Simkovic Present Status of the Experiment TGV II
doi: 10.1023/A:1015313527925
2002YA04 J.Phys.(London) G28, 463 (2002) E.A.Yakushev, V.G.Chumin, V.M.Gorozhankin, K.Ya.Gromov, A.Kovalik, D.V.Filosofov, Y.V.Norseev, L.V.Yurkova The Predicted 10.6 keV Transition in 221Fr from the α-Decay of 225Ac Revealed RADIOACTIVITY 225Ac(α); measured E(ce), I(ce) following α decay. 221Fr deduced transitions. Electrostatic spectrometer.
doi: 10.1088/0954-3899/28/3/308
2001BO06 Nucl.Phys. B(Proc.Supp.) S91, 273 (2001) J.Bonn, B.Bornschein, L.Bornschein, L.Fickinger, B.Flatt, O.Kazachenko, A.Kovalik, Ch.Kraus, E.W.Otten, J.P.Schall, H.Ulrich, Ch.Weinheimer The Mainz Neutrino Mass Experiment RADIOACTIVITY 3H(β-); measured Eβ, Iβ; deduced neutrino mass limits.
doi: 10.1016/S0920-5632(00)00951-8
2000BO32 Yad.Fiz. 63, No 6, 1044 (2000); Phys.Atomic Nuclei 63, 969 (2000) J.Bonn, B.Bornschein, L.Bornschein, L.Fickinger, O.Kazachenko, A.Kovalik, Ch.Kraus, E.W.Otten, H.Ulrich, Ch.Weinheimer Newest Results from the Mainz Neutrino-Mass Experiment RADIOACTIVITY 3H(β-); measured Eβ, Iβ; deduced ν mass upper limit. Time dependence of spectrum anomaly discussed.
doi: 10.1134/1.855733
2000BR44 Yad.Fiz. 63, No 7, 1292 (2000); Phys.Atomic Nuclei 63, 1218 (2000) V.B.Brudanin, N.I.Rukhadze, Ch.Briancon, V.G.Egorov, V.E.Kovalenko, A.Kovalik, A.V.Salamatin, V.V.Tsupko-Sitnikov, Ts.Vylov, I.Stekl Double-Beta Decay of 48Ca in the TGV Experiment RADIOACTIVITY 48Ca(2β-); measured βγ-, ββ-coin, 2ν accompanied 2β-decay T1/2. Low-background experiment.
doi: 10.1134/1.855772
2000BR63 Phys.Lett. 495B, 63 (2000) V.B.Brudanin, N.I.Rukhadze, Ch.Briancon, V.G.Egorov, V.E.Kovalenko, A.Kovalik, A.V.Salamatin, I.Stekl, V.V.Tsupko-Sitnikov, Ts.Vylov, P.Cermak Search for Double Beta Decay of 48Ca in the TGV Experiment RADIOACTIVITY 48Ca(2β-); measured 2ν accompanied 2β-decay T1/2, 0ν accompanied 2β-decay T1/2 lower limit.
doi: 10.1016/S0370-2693(00)01244-2
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
1999BB29 Nucl.Phys. (Supplement) A654, 988c (1999) H.Barth, A.Bleile, J.Bonn, L.Bornschein, B.Degen, L.Fleischmann, O.Kazachenko, A.Kovalik, E.W.Otten, M.Przyrembel, Ch.Weinheimer New Results from the Mainz Neutrino Mass Experiment RADIOACTIVITY 3H(β-); analyzed β spectrum; deduced neutrino mass limit.
doi: 10.1016/S0375-9474(00)88586-3
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
1999KO61 J. Electron Spectrosc. Relat. Phenom. 105, 219 (1999) A.Kovalik, E.A.Yakushev, D.V.Filosofov, V.M.Gorozhankin, P.A.Petev, M.A.Mahmoud Precise measurement of the KLL and KLX Auger spectra of cadmium from the EC-decay of 111In RADIOACTIVITY 111In(EC) [from 109Ag(α, 2n), E=30 MeV]; measured decay products, Eβ, Iβ; deduced Auger electron spectra energies and intensities, evidence of structures predicted by the intermediate coupling theory. Comparison with available data.
doi: 10.1016/S0368-2048(99)00059-6
1999WE13 Phys.Lett. 460B, 219 (1999); Erratum Phys.Lett. 464B, 352 (1999) Ch.Weinheimer, B.Degen, A.Bleile, J.Bonn, L.Bornschein, O.Kazachenko, A.Kovalik, E.W.Otten High Precision Measurement of Tritium β Spectrum Near Its Endpoint and Upper Limit on the Neutrino Mass RADIOACTIVITY 3H(β-); measured β spectra; deduced endpoint energy, neutrino mass limit.
doi: 10.1016/S0370-2693(99)00780-7
1998KO61 J.Phys.(London) G24, 2247 (1998) A.Kovalik, E.A.Yakushev, V.M.Gorozhankin, A.F.Novgorodov, M.Rysavy The Low-Energy Electron Spectrum from the α-Decay of 241Am RADIOACTIVITY 241Am(α); measured E(ce), I(ce). 237Np deduced transitions energies. Electrostatic spectrometer.
doi: 10.1088/0954-3899/24/12/009
1998KO78 J. Electron Spectrosc. Relat. Phenom. 95, 231 (1998) A.Kovalik, V.M.Gorozhankin, A.F.Novgorodov, M.A.Mahmoud, N.Coursol, E .A.Yakushev, V.V.Tsupko-Sitnikov The electron spectrum from the atomic deexcitation of 13154Xe. RADIOACTIVITY 131Cs(EC), 131I(β-) [from Ba(n, γ)131Ba, E thermal]; measured decay products, Eβ, Iβ, X-rays; deduced Auger transitions e nergies and intensities, L3MM and KLM Auger lines, relative intensities of t he main β-spectrum components.
doi: 10.1016/S0368-2048(98)00215-1
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
1996BR29 Bull.Rus.Acad.Sci.Phys. 60, 110 (1996) V.B.Brudanin, C.Briancon, C.Vylov, N.I.Rukhadze, A.V.Salamatin, I.Stekl, V.G.Egorov, V.E.Kovalenko, A.Kovalik, A.V.Revenko, V.V.Timkin, V.G.Sandukovsky, V.V.Tsupko-Sitnikov, Sh.E.Zaparov, V.Vorobel Background Conditions in the TGV Spectrometer to Search for Double β-Decay
1996BR45 Nucl.Instrum.Methods Phys.Res. A372, 222 (1996) Ch.Briancon, V.B.Brudanin, V.G.Egorov, Z.Janout, J.Konicek, A.Kovalik, V.E.Kovalenko, J.Kubasta, S.Pospisil, A.V.Revenko, N.I.Rukhadze, A.V.Salamatin, V.G.Sandukovsky, I.Stekl, V.V.Timkin, V.V.Tsupko-Sitnikov, V.Vorobel, Ts.Vylov The High Sensitivity Double Beta Spectrometer TGV RADIOACTIVITY 207Bi(EC), (β+); measured electron transmission through CaCo3 foil; deduced 48Ca, 150Nd 2β-decay improved T1/2 estimate measurement possibility. High sensitivity double beta Telescope Germanium Vertical spectrometer.
doi: 10.1016/0168-9002(95)01019-X
1996GO06 J.Phys.(London) G22, 377 (1996) V.M.Gorozhankin, V.G.Kalinnikov, A.Kovalik, A.A.Solnyshkin, A.F.Novgorodov, N.A.Lebedev, N.Yu.Kotovsky, E.A.Yakushev, M.A.Mahmoud, M.Rysavy The Problem of the Anomaly in the 158Er Beta Decay Solved RADIOACTIVITY 158,161Er(β+) [from Ta(p, X), E=640 MeV]; measured I(ce), Eγ, Iγ. 158,161Ho deduced levels, J, π, γ multipolarity in some cases.
doi: 10.1088/0954-3899/22/3/011
1993KO45 J.Phys.(London) G19, 1921 (1993) A Conversion-Electron Investigation of the 9.4 keV M1 + E2 Transition in 83Kr RADIOACTIVITY 83Rb(EC); 83mKr(IT) [from 83Rb-decay]; measured I(ce). 83Kr deduced transition ICC ratios, δ. Combined electrostatic electron spectrometer.
doi: 10.1088/0954-3899/19/11/018
1993WA18 Nucl.Instrum.Methods Phys.Res. A332, 334 (1993) B.Was, A.Kovalik, A.F.Novgorodov, J.Rak A New Technique for the Preparation of Small-Size Radioactive Samples Based on the Langmuir-Blodgett Method RADIOACTIVITY 169Yb(EC); measured I(ce). Preparation of small size monomolecular layered source, modified Langmuir-Blodgett technique.
doi: 10.1016/0168-9002(93)90779-H
1990BR19 J.Phys.(London) G16, 1221 (1990) V.Brabec, A.Kovalik, O.Dragoun, M.Ya.Kuznetsova, A.Mastalka, J.Adam A Full Proton-Neutron Multiplet Confirmed in Odd-Odd 204Bi RADIOACTIVITY 204,205,206Po [from 206Pb(3He, xn), E=46 MeV]; measured I(ce). 204Bi deduced levels, J, π, γ-multipolarity, ICC, multiplet structure.
doi: 10.1088/0954-3899/16/8/017
1990GO02 J.Phys.(London) G16, 99 (1990) V.M.Gorozhankin, A.Kovalik, V.G.Kalinnikov, Ts.Vylov, K.Ya.Gromov, N.A.Lebedev, A.F.Novgorodov, O.Dragoun, V.Brabec, S.K.Vasilev Experimental Evidence for Missing Low-Energy Transition in the 160Er → 160Ho Decay RADIOACTIVITY 165,160Er, 160Ho [from Ta(p, xnyp), E=640 MeV]; measured I(ce), Eγ, Iγ. 160Ho deduced ICC ratios, δ(M2/E1), level J, π. Electrostatic electron spectrometers, hyperpure Ge detector.
doi: 10.1088/0954-3899/16/1/013
1987KO38 J.Phys.(London) B20, 3997 (1987) A.Kovalik, A.Inoyatov, A.F.Novgorodov, V.Brabec, M.Rysavy, Ts.Vylov, O.Dragoun, A.Minkova K Auger Spectrum of Iron from the 57Co Decay ATOMIC PHYSICS 57Fe; measured Auger electrons E(e), I(e). Electrostatic spectrometer, 57Co source.
doi: 10.1088/0022-3700/20/16/012
1983BR09 Z.Phys. A311, 37 (1983) V.Brabec, O.Dragoun, M.Rysavy, M.Fiser, A.Kovalik, I.Cserny, I.Kadar The KLL Auger Spectrum of Manganese RADIOACTIVITY 55Fe(EC); measured Auger spectra. 55Mn deduced subshell intensity ratios.
doi: 10.1007/BF01411604
1983DR15 Phys.Lett. 99A, 187 (1983) O.Dragoun, M.Fiser, V.Brabec, A.Kovalik, A.Kuklik, P.Mikusik A New Method of Valence State Determination Based on Measurements of Internal Conversion Electrons RADIOACTIVITY 99mTc(β-), (IT); measured I(ce); deduced M-subshell electron binding energies. Elemental Tc, Tc dioxide samples.
doi: 10.1016/0375-9601(83)90974-X
1982BR16 Z.Phys. A306, 347 (1982) V.Brabec, M.Rysavy, O.Dragoun, M.Fiser, A.Kovalik, Cs.Ujhelyi, D.Berenyi Nuclear Structure and Chemical Effects in Internal Conversion of the 35 keV M1 + E2 Transition in 125Te RADIOACTIVITY 125I(EC) [from 124Xe(n, γ)125Xe(decay)]; measured I(ce). 125Te transition deduced ICC, subshell ratios, δ. Iron yoke π square root 2 magnetic spectrometer.
doi: 10.1007/BF01432375
1982DR02 Czech.J.Phys. B32, 711 (1982) O.Dragoun, V.Brabec, A.Mastalka, A.Kovalik, M.Ya.Kuznetsova, Yu.V.Norseev Existence of the 4 keV Transition in 208Po Proved RADIOACTIVITY 208At [from 209Bi(3He, 4n), E=38.5 MeV]; measured Eγ, Iγ, I(ce). 208Po deduced transition energy, subshell ICC ratios.
doi: 10.1007/BF01596723
1982DR10 Nucl.Phys. A391, 29 (1982) O.Dragoun, V.Brabec, A.Mastalka, A.Kovalik, M.Rysavy, M.Ya.Kuznetsova, Yu.V.Norseev Low-Energy Transition Depopulating the Isomeric 8+ Level in 208Po RADIOACTIVITY 208At(EC) [from 209Bi(3He, 4n)]; measured I(ce). 208Po deduced ICC ratios, γ-multipolarity.
doi: 10.1016/0375-9474(82)90217-2
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