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NSR database version of March 21, 2024.

Search: Author = V.Wittmann

Found 17 matches.

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2016NA02      Phys.Rev. C 93, 014308 (2016)

E.Nacher, B.Rubio, A.Algora, D.Cano-Ott, J.L.Tain, A.Gadea, J.Agramunt, M.Gierlik, M.Karny, Z.Janas, E.Roeckl, A.Blazhev, R.Collatz, J.Doring, M.Hellstrom, Z.Hu, R.Kirchner, I.Mukha, C.Plettner, M.Shibata, K.Rykaczewski, L.Batist, F.Moroz, V.Wittmann, J.J.Valiente-Dobon

Observations of the Gamow-Teller resonance in the rare-earth nuclei above 146Gd populated in β decay

RADIOACTIVITY 148,148mTb, 150,150mHo, 152,152mTm(β+), (EC); measured Eγ, Iγ using GSI total absorption spectrometer (TAS), x-ray spectra; deduced β- intensity distributions, Gamow-Teller strength distributions B(GT), Q(EC) value for 152mTm decay, Gamow-Teller (GT) resonance; discussed quenching of the GT strength. Comparison with shell-model calculations. Radioactive sources produced in nuclear reactions at GSI using on-line mass spectrometer and FEBIAD ion source.

doi: 10.1103/PhysRevC.93.014308
Citations: PlumX Metrics


2011ES03      Phys.Rev. C 84, 034304 (2011)

M.E.Estevez Aguado, A.Algora, B.Rubio, J.Bernabeu, E.Nacher, J.L.Tain, A.Gadea, J.Agramunt, K.Burkard, W.Huller, J.Doring, R.Kirchner, I.Mukha, C.Plettner, E.Roeckl, H.Grawe, R.Collatz, M.Hellstrom, D.Cano-Ott, M.Karny, Z.Janas, M.Gierlik, A.Pochocki, K.Rykaczewski, L.Batist, F.Moroz, V.Wittman, A.Blazhev, J.J.Valiente, C.Espinoza

β-decay study of 150Er, 152Yb, and 156Yb: Candidates for a monoenergetic neutrino beam facility

RADIOACTIVITY 150Er(EC), (β+)[from96Ru(58Ni, 4p), E=307.4 MeV]; 152Yb(EC), (β+)[from 96Ru(58Ni, 2p), E=261 MeV]; 156Yb(EC), (β+)[from103Rh(58Ni, pα), E=307.4 MeV]; measured Eγ, Iγ, γ(x ray)-, γ(positrons)-coin; deduced I(EC), I(EC+β+). Total absorption spectroscopy (TAS)technique. Comparison of EC/β+ branches with those from previous high-resolution studies. Discussed candidate for EC-based monochromatic neutrino beam facility and search for CP violation.

doi: 10.1103/PhysRevC.84.034304
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2004AL10      Eur.Phys.J. A 20, 199 (2004)

A.Algora, L.Batist, M.J.G.Borge, D.Cano-Ott, R.Collatz, S.Courtin, Ph.Dessagne, L.M.Fraile, A.Gadea, W.Gelletly, M.Hellstrom, Z.Janas, A.Jungclaus, R.Kirchner, M.Karny, G.Le Scornet, Ch.Miehe, F.Marechal, F.Moroz, E.Nacher, E.Poirier, E.Roeckl, B.Rubio, K.Rykaczewski, J.L.Tain, O.Tengblad, V.Wittmann, and the GSI-TAS and LUCRECIA-TAgS Collaborations

Beta-decay studies using total absorption spectroscopy

doi: 10.1140/epja/i2002-10353-8
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2004AL35      Phys.Rev. C 70, 064301 (2004)

A.Algora, E.Nacher, B.Rubio, D.Cano-Ott, J.L.Tain, A.Gadea, J.Agramunt, M.Karny, Z.Janas, K.Rykaczewski, R.Collatz, M.Hellstrom, Z.Hu, R.Kirchner, E.Roeckl, M.Shibata, L.Batist, F.Moroz, V.Wittmann

β decay of 148Dy: Study of the Gamow-Teller giant state by means of total absorption spectroscopy

RADIOACTIVITY 148Dy(EC), (β+) [from 93Nb(58Ni, 3p)]; measured Eγ, Iγ, (X-ray)γ-, βγ-coin; deduced log ft. 148Tb levels deduced β-feeding intensities, Gamow-Teller strength distribution, resonant state features. Total absorption spectrometer, comparison with previous results.

doi: 10.1103/PhysRevC.70.064301
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2001JA16      Eur.Phys.J. A 12, 143 (2001)

Z.Janas, M.Karny, Y.Fujita, L.Batist, D.Cano-Ott, R.Collatz, P.Dendooven, A.Gadea, M.Gierlik, M.Hellstrom, Z.Hu, A.Jokinen, R.Kirchner, O.Klepper, F.Moroz, M.Oinonen, H.Penttila, A.Plochocki, E.Roeckl, B.Rubio, M.Shibata, J.L.Tain, V.Wittman

Total Absorption Spectroscopy of 58Cu Decay

RADIOACTIVITY 58Cu(β+), (EC) [from Si(40Ca, X)]; measured Eγ, Iγ; deduced Gamow-Teller strength. 58Ni levels deduced β-feeding intensity. Total absorption spectroscopy.

doi: 10.1007/s100500170021
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2001KA36      Nucl.Phys. A690, 367 (2001)

M.Karny, L.Batist, B.A.Brown, D.Cano-Ott, R.Collatz, A.Gadea, R.Grzywacz, A.Guglielmetti, M.Hellstrom, Z.Hu, Z.Janas, R.Kirchner, F.Moroz, A.Piechaczek, A.Plochocki, E.Roeckl, B.Rubio, K.Rykaczewski, M.Shibata, J.Szerypo, J.L.Tain, V.Wittmann, A.Wohr

Determination of the Gamow-Teller Strength Function for the Neutron-Deficient Isotopes 104-107In

RADIOACTIVITY 104,105,106,107In(EC), (β+) [from 50,52Cr(58Ni, xnyp)]; measured Eγ, Iγ; deduced β-intensity and β-strength distributions. Online mass separation, total absorption spectrometer.

NUCLEAR STRUCTURE 104,105,106,107In; calculated levels, Gamow-Teller strength. Shell model.

doi: 10.1016/S0375-9474(00)00694-1
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2000HU17      Phys.Rev. C62, 064315 (2000)

Z.Hu, L.Batist, J.Agramunt, A.Algora, B.A.Brown, D.Cano-Ott, R.Collatz, A.Gadea, M.Gierlik, M.Gorska, H.Grawe, M.Hellstrom, Z.Janas, M.Karny, R.Kirchner, F.Moroz, A.Plochocki, M.Rejmund, E.Roeckl, B.Rubio, M.Shibata, J.Szerypo, J.L.Tain, V.Wittmann

β Decay of 98Ag: Evidence for the Gamow-Teller resonance near 100Sn

RADIOACTIVITY 98Ag(β+), (EC) [from 61Ni(40Ca, 2np)]; measured Eγ, Iγ, γγ-coin, T1/2; deduced β-intensities, strength distribution. 98Pd deduced levels, J, π, Gamow-Teller strength distribution, resonance features. Mass separation, total-absorption spectrometer. Comparison with shell model.

NUCLEAR STRUCTURE 98Ag, 98Pd; calculated levels, J, π, Gamow-Teller strength distributions. Shell model.

doi: 10.1103/PhysRevC.62.064315
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1999AL46      Nucl.Phys. (Supplement) A654, 727c (1999)

A.Algora, D.Cano-Ott, B.Rubio, J.L.Tain, J.Agramunt, J.Blomqvist, L.Batist, R.Borcea, R.Collatz, A.Gadea, J.Gerl, M.Gierlik, M.Gorska, O.Guilbaud, H.Grawe, M.Hellstrom, Z.Hu, Z.Janas, M.Karny, R.Kirchner, P.Kleinheinz, W.Liu, T.Martinez, F.Moroz, A.Plochocki, M.Rejmund, E.Roeckl, K.Rykaczewski, M.Shibata, J.Szerypo, V.Wittmann, and the German Euroball Collaboration

The GT Resonance Revealed in β+-Decay using New Experimental Techniques

RADIOACTIVITY 150Ho(EC), (β+), (β+α); measured Eγ, Eα, β-delayed α emission probability, β-strength. Comparison between results from a Total absorption spectrometer (NAI) and Ge detectors.

doi: 10.1016/S0375-9474(00)88536-X
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1999HU10      Phys.Rev. C60, 024315 (1999)

Z.Hu, L.Batist, J.Agramunt, A.Algora, B.A.Brown, D.Cano-Ott, R.Collatz, A.Gadea, M.Gierlik, M.Gorska, H.Grawe, M.Hellstrom, Z.Janas, M.Karny, R.Kirchner, F.Moroz, A.Plochocki, M.Rejmund, E.Roeckl, B.Rubio, M.Shibata, J.Szerypo, J.L.Tain, V.Wittmann

β Decay of 97Ag: Evidence for the Gamow-Teller resonance near 100Sn

RADIOACTIVITY 97Ag(β+), (EC) [from 60Ni(40Ca, 2np)]; measured Eγ, Iγ, γγ-coin, T1/2; deduced β-intensity, strength distribution. 97Pd deduced levels, J, π, Gamow-Teller strength distribution. Mass separation, total absorbtion spectrometer, NaI(Tl), Ge, Si detectors.

NUCLEAR STRUCTURE 97Ag, 97Pd; calculated levels, J, π, Gamow-Teller strength distributions. Monte Carlo shell-model approach.

doi: 10.1103/PhysRevC.60.024315
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1998KA42      Nucl.Phys. A640, 3 (1998)

M.Karny, L.Batist, B.A.Brown, D.Cano-Ott, R.Collatz, A.Gadea, R.Grzywacz, A.Guglielmetti, M.Hellstrom, Z.Hu, Z.Janas, R.Kirchner, F.Moroz, A.Piechaczek, A.Plochocki, E.Roeckl, B.Rubio, K.Rykaczewski, M.Shibata, J.Szerypo, J.L.Tain, V.Wittmann, A.Wohr

Beta Decay of 103In: Evidence for the Gamow-Teller resonance near 100Sn

RADIOACTIVITY 103In(β+), (EC) [from 50Cr(58Ni, xpyn)]; measured Eγ, Iγ; deduced β-intensity, β-strength distribution. On-line mass separation, total absorption spectrometer, NaI(Tl) detectors, Ge-, Si-detectors.

NUCLEAR STRUCTURE 103Cd, 103In; calculated levels, Gamow-Teller strength. Shell model.

doi: 10.1016/S0375-9474(98)00437-0
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1997SZ04      Z.Phys. A359, 117 (1997)

J.Szerypo, R.Grzywacz, Z.Janas, M.Karny, M.Pfutzner, A.Plochocki, K.Rykaczewski, J.Zylicz, M.Huyse, G.Reusen, J.Schwarzenberg, P.Van Duppen, A.Woehr, H.Keller, R.Kirchner, O.Klepper, A.Piechaczek, E.Roeckl, K.Schmidt, L.Batist, A.Bykov, V.Wittman, B.A.Brown

Decay Properties of Ground-State and Isomer of 103In

RADIOACTIVITY 103In(β+)(EC) [from 50Cr(58Ni, 2n3p), E=5.9 MeV/nucleon]; measured Eγ, Iγ, γγ-coin following decay; deduced log ft, Gamow-Teller strength. 103mIn(IT) [from 50Cr(58Ni, 2n3p), E=5.9 MeV/nucleon]; measured T1/2. 101In(β+) [from 50Cr(58Ni, 4n3p), E=5.9 MeV/nucleon]; measured Eγ, Iγ, γγ-coin following decay, T1/2. 103Cd deduced levels. Shell model calculations.

doi: 10.1007/s002180050376
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1995BA25      Z.Phys. A351, 149 (1995)

L.Batist, A.Bykov, F.Moroz, V.Wittmann, G.D.Alkhazov, H.Keller, R.Kirchner, O.Klepper, E.Roeckl, M.Huyse, P.Van Duppen, G.Reusen, A.Plochocki, M.Pfutzner, K.Rykaczewski, J.Szerypo, J.Zylicz, B.A.Brown

Gamow-Teller Strength Distribution in Beta-Decay of 100Ag from Total-Absorption Gamma Spectrometry

RADIOACTIVITY 100Ag(EC), (β+); measured Gamow-Teller transition strength distribution in 100Pd. Total absorption γ-spectrometry. Model comparison.

doi: 10.1007/BF01289525
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1995SZ01      Nucl.Phys. A584, 221 (1995)

J.Szerypo, M.Huyse, G.Reusen, P.Van Duppen, Z.Janas, H.Keller, R.Kirchner, O.Klepper, A.Piechaczek, E.Roeckl, D.Schardt, K.Schmidt, R.Grzywacz, M.Pfutzner, A.Plochocki, K.Rykaczewski, J.Zylicz, G.Alkhazov, L.Batist, A.Bykov, V.Wittmann, B.A.Brown

Beta Decay of Neutron-Deficient Even-Mass Indium Isotopes: Evidence for population of highly-excited states in the Cadmium-daughter nuclei

RADIOACTIVITY 100,102,104In(EC), (β+) [from 50Cr(58Ni, xn3p), E=5.6 MeV/nucleon]; measured Eγ, Iγ, β-delayed Ep, Ip, Eβ, pγ-, βγ-, γγ-coin, T1/2; deduced B(GT). 102Cd deduced levels. Ge, Si detectors, on-line mass separation.

doi: 10.1016/0375-9474(94)00513-M
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1993AL03      Z.Phys. A344, 425 (1993)

G.D.Alkhazov, L.H.Batist, A.A.Bykov, F.V.Moroz, S.Yu.Orlov, V.K.Tarasov, V.D.Wittmann

Beta-Decay Energy Measurements using Total Gamma-Absorption Spectroscopy

RADIOACTIVITY 76,77,78,78m,79,80,82,82mRb, 120,121,122,122m,123,124,125,126,128Cs, 129Ce, 131Nd, 131Pr, 141,142,143,144Eu, 141m,143Sm, 143,145Gd, 145,146,147m,149Dy, 145,146,147m,148,148m,150mTb, 148,149,150,150m,151,152,152m,153,154,154mHo, 157,158,159,160,161,162,163Tm, 159,160,161,162,163,164,165Lu, 159Yb, 159Er(β+); measured total γ spectra, T1/2 in some cases; deduced β-decay Q. Total γ-absorption spectroscopy.

doi: 10.1007/BF01283198
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1985AL08      Nucl.Phys. A438, 482 (1985)

G.D.Alkhazov, A.A.Bykov, V.D.Wittmann, V.E.Starodubsky, S.Yu.Orlov, V.N.Panteleyev, A.G.Polyakov, V.K.Tarasov

Gamow-Teller Resonance in β+ Decay of 147mDy and Spin-Isospin Current Renormalization

RADIOACTIVITY 147mDy(β+); measured Iγ(E), T1/2, Q(EC), β+γ-coin; deduced S(β), (G(A)/g(v)). RPA calculation comparision.

doi: 10.1016/0375-9474(85)90387-2
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1985AL13      Phys.Lett. 157B, 350 (1985)

G.D.Alkhazov, A.A.Bykov, V.D.Wittmann, S.Yu.Orlov, V.K.Tarasov

Experimential Test of the 145Gd Decay Scheme and the Decay of Pandemonium

RADIOACTIVITY 145Gd(EC), (β+) [from Ta(p, X), E=1 GeV]; measured βγ-coin, total absorption spectra; deduced log ft uncertainities. 145Eu levels deduced I(β+)/I(EC). 151,149Dy(β+), (EC); 147mDy(EC); measured decay strength function. Total γ-absorption spectrometer.

doi: 10.1016/0370-2693(85)90378-8
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1985AL30      Yad.Fiz. 42, 1313 (1985)

G.D.Alkhazov, A.A.Bykov, V.D.Wittmann, F.V.Moroz, S.Yu.Orlov, V.E.Starodubsky, V.K.Tarasov

Quenching of Spin-Isospin Excitations in β+ Decay of 147m,149,151Dy

RADIOACTIVITY 147m,149,151Dy(β+) [from Ta(p, X), E=1 GeV]; measured β-strength function; deduced Q(EC), log ft. 147,149,151Tb deduced Gamow-Teller resonances, transition strength quenching. Self-consistent Hartree-Fock plus RPA approach.


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Note: The following list of authors and aliases matches the search parameter V.Wittmann: , V.C.WITTMANN, V.D.WITTMANN