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Search: Author = F.Dechery

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2021GO26      Eur.Phys.J. A 57, 321 (2021)

T.Goigoux, Ch.Theisen, B.Sulignano, M.Airiau, K.Auranen, H.Badran, R.Briselet, T.Calverley, D.Cox, F.Dechery, F.Defranchi Bisso, A.Drouart, Z.Favier, B.Gall, T.Grahn, P.T.Greenlees, K.Hauschild, A.Herzan, R.-D.Herzberg, U.Jakobsson, R.Julin, S.Juutinen, J.Konki, M.Leino, A.Lightfoot, A.Lopez-Martens, A.Mistry, P.Nieminen, J.Pakarinen, P.Papadakis, J.Partanen, P.Peura, P.Rahkila, E.Rey-Herme, J.Rubert, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, J.Uusitalo, M.Vandebrouck, A.Ward, M.Zielinska, P.Jachimowicz, M.Kowal, J.Skalski

First observation of high-K isomeric states in ²⁴⁹Md and ²⁵¹Md

RADIOACTIVITY ^249,251Md(IT) [from ²⁰³Tl(⁴⁸Ca, 2n)²⁴⁹Md, E=219 MeV; ²⁰⁵Tl(⁴⁸Ca, 2n)²⁵¹Md, E=218 MeV]; measured decay products, Eα, Iα, Eβ, Iβ, Eγ, Iγ, β-α-coin.; deduced level energies, J, π, 3 quasi-particle high-K states, isomeric states T_1/2. Comparison theoretical calculations. SAGE spectrometer, the K130 cyclotron at the Accelerator Laboratory of the University of Jyvaskyla.

doi: 10.1140/epja/s10050-021-00631-4
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2020BR08      Phys.Rev. C 102, 014307 (2020)

R.Briselet, Ch.Theisen, B.Sulignano, M.Airiau, K.Auranen, D.M.Cox, F.Dechery, A.Drouart, Z.Favier, B.Gall, T.Goigoux, T.Grahn, P.T.Greenlees, K.Hauschild, A.Herzan, R.-D.Herzberg, U.Jakobsson, R.Julin, S.Juutinen, J.Konki, M.Leino, A.Lopez-Martens, A.Mistry, P.Nieminen, J.Pakarinen, P.Papadakis, P.Peura, E.Rey-Herme, P.Rahkila, J.Rubert, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, J.Uusitalo, M.Vandebrouck, A.Ward, M.Zielinska, B.Bally, M.Bender, W.Ryssens

In-beam γ-ray and electron spectroscopy of ^{249, 251}Md

NUCLEAR REACTIONS ^203,205Tl(⁴⁸Ca, 2n), E=218 MeV; measured Eγ, Iγ, E(ce), I(ce), γγ-coin, and γ(ce)-coin using the RITU gas-filled recoil separator, GREAT spectrometer, and SAGE array at the University of Jyvaskyla Accelerator Laboratory. Recoil-decay tagging method. ^249,251Md; deduced high-spin levels, J, π, K- and L-conversion coefficients, multipolarities, rotational bands, Nilsson configurations, octupole correlations. Comparison with Skyrme-Hartree-Fock-Bogoliubov theoretical calculations. ²⁵¹Md, ²⁵⁵Lr; discussed identical transitions and bands.

doi: 10.1103/PhysRevC.102.014307
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2019BR06      Phys.Rev. C 99, 024614 (2019)

R.Briselet, Ch.Theisen, M.Vandebrouck, A.Marchix, M.Airiau, K.Auranen, H.Badran, D.Boilley, T.Calverley, D.Cox, F.Dechery, F.Defranchi Bisso, A.Drouart, B.Gall, T.Goigoux, T.Grahn, P.T.Greenlees, K.Hauschild, A.Herzan, R.D.Herzberg, U.Jakobsson, R.Julin, S.Juutinen, J.Konki, M.Leino, A.Lightfoot, A.Lopez-Martens, A.Mistry, P.Nieminen, J.Pakarinen, P.Papadakis, J.Partanen, P.Peura, P.Rahkila, J.Rubert, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, B.Sulignano, J.Uusitalo, A.Ward, M.Zielinska

Production cross section and decay study of ²⁴³Es and ²⁴⁹Md

NUCLEAR REACTIONS ¹⁹⁷Au(⁴⁸Ca, 2n)²⁴³Es, E=208, 210 MeV; ²⁰³Tl(⁴⁸Ca, 2n)²⁴⁹Md, E=212.7, 214.3 MeV; measured reaction products, Eα, Iα, (recoil)α-coin, (recoil)αα-correlations, production σ(E) using RITU separator for recoils at the University of Jyvaskyla. Comparison of measured production σ(E) with calculations using the KEWPIE2 statistical fusion-evaporation code. Systematics of fusion-evaporation σ in the 2n channel.

RADIOACTIVITY ²⁴³Es(α)[from ¹⁹⁷Au(⁴⁸Ca, 2n), E=208, 210 MeV followed by separation of fragments using RITU separator at the Accelerator Laboratory of the University of Jyvaskyla (JYFL); ²⁴⁹Md(α)[from ²⁰³Tl(⁴⁸Ca, 2n), E=212.7, 214.3 MeV]; ²⁴⁵Es(α)[α daughter of ²⁴⁹Md decay]; measured Eα, Iα, recoils, (recoils)α-correlations, half-lives and α-decay branching ratios for α decays of ground states of ^243,245Es, ²⁴⁹Md. Comparison with previously measured values, and with theoretical predictions.

doi: 10.1103/PhysRevC.99.024614
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0923. Data from this article have been entered in the XUNDL database. For more information, click here.

2019MI08      Nucl.Phys. A987, 337 (2019)

A.K.Mistry, J.Khuyagbaatar, F.P.Hessberger, D.Ackermann, B.Andel, S.Antalic, M.Block, P.Chhetri, F.Dechery, C.Droese, Ch.E.Dullmann, F.Giacoppo, J.Hoffmann, O.Kaleja, N.Kurz, M.Laatiaoui, L.Lens, J.Maurer, P.Mosat, J.Piot, S.Raeder, M.Vostinar, A.Yakushev, Z.Zhang

The ⁴⁸Ca+¹⁸¹Ta reaction: Cross section studies and investigation of neutron-deficient 86 ≤ Z ≤ 93 isotopes

NUCLEAR REACTIONS ¹⁸¹Ta(⁴⁸Ca, x)²²⁹Np, E(cm)=212, 217, 226 MeV[energies based on σ predictions by the HIVAP code]; measured xn, αxn, pxn leading to ²²⁵Np, ²²⁵U, ²²⁴Np, Evaporation Residues (ER) separated from ⁴⁸Ca primary beam using the SHIP velocity filter at GSI, ToF and COMPAct Spectroscopy Set-up (COMPASS) comprising of DSSDs and SSSDs; deduced ²²⁵U, ^225,226,229Np decay chains; ²¹³Rn, ^213,214,215Fr, ^217,218,219Ac, ²²¹Th, ^221,222,223Pa, ²²⁵U, ^225,226Np; deduced decay data, T_1/2; compared with literature values; compiled production σ maxima in 3n and 4n evaporation channels from compound nuclei with Z=83-94 and projectiles ⁴⁰Ar, ^40,44,48Ca, ⁵⁰Ti using published experimental data.

doi: 10.1016/j.nuclphysa.2019.05.003
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD8010. Data from this article have been entered in the XUNDL database. For more information, click here.

2018AC08      Nucl.Instrum.Methods Phys.Res. A907, 81 (2018)

D.Ackermann, A.K.Mistry, F.P.Hessberger, B.Andel, S.Antalic, M.Block, L.Caceres, P.Chhetri, F.Dechery, Ch.Droese, Ch.E.Dullmann, F.Giacoppo, J.Hoffmann, O.Kaleja, O.Kamalou, N.Kurz, J.Khuyagbaatar, R.R.Mandl, T.Murbock, M.Laatiaoui, J.Maurer, P.Mosat, J.Piot, S.Raeder, H.Savajols, O.Sorlin, Ch.Stodel, J.C.Thomas, M.Vostinar, P.Wieczorek, A.Yakushev, Z.Zhang

COMPASS-A COMPAct decay spectroscopy set-up

RADIOACTIVITY ²⁵³No(α) [from ²⁰⁷Pb(⁴⁸Ca, 2n), E not given]; measured decay products, Eγ, Iγ, Eα, Iα, α-γ-coin.; deduced α-decay spectrum, branching ratios.

doi: 10.1016/j.nima.2018.01.096
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2018MI11      Acta Phys.Pol. B49, 613 (2018)

A.K.Mistry, Z.Zhang, F.P.Hessberger, D.Ackermann, B.Andel, S.Antalic, M.Block, P.Chhetri, F.Dechery, C.Droese, Ch.E.Dullmann, F.Giacoppo, J.Hoffmann, O.Kaleja, J.Khuyagbaatar, N.Kurz, M.Laatiaoui, J.Maurer, P.Mosat, J.Piot, S.Raeder, M.Vostinar, A.Yakushev

Decay Spectroscopy of Heavy Isotopes at SHIP Using the COMPASS Focal Plane Detection Set-up

RADIOACTIVITY ²⁵⁰Fm, ²⁵⁴No(α)[Nobelium from ⁴⁸Ca(²⁰⁸Pb, 2n), E=4.55 MeV/nucleon]; measured Eα, Iα(time), αα-coin; deduced α-decay energy spectrum, Iα vs time, T_1/2, α_Fmα_No correlation, T_1/2. ²²²Th, ²¹⁸Ra, ²¹⁴Rn(α)[from α-decays ²³⁰Pu to ²²⁶U to ²³²Th to²¹⁸Ra to ²¹⁴Rn]; measured α-decay trace ²²²Th to ²¹⁸Ra to n, Eα, Iα(time), αα-coin, αα-correlations; deduced summary of α-decay chains starting with ²²⁷U, ²²⁹Np, ^229,230Pu using also literature references.

doi: 10.5506/aphyspolb.49.613
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2018RE07      Phys.Rev. C 97, 054332 (2018)

K.Rezynkina, A.Lopez-Martens, K.Hauschild, I.Deloncle, S.Peru, P.Brionnet, M.L.Chelnokov, V.I.Chepigin, O.Dorvaux, F.Dechery, H.Faure, B.Gall, A.V.Isaev, I.N.Izosimov, D.E.Katrasev, A.N.Kuznetsov, A.A.Kuznetsova, O.N.Malyshev, A.G.Popeko, Y.A.Popov, E.A.Sokol, A.I.Svirikhin, A.V.Yeremin

Influence of octupole vibration on the low-lying structure of ²⁵¹Fm and other heavy N = 151 isotones

RADIOACTIVITY ²⁵⁵No(α)[from ⁴⁸Ca(²⁰⁸Pb, n), E=220 MeV and from ϵ decay of ²⁵⁵Lr produced in ⁴⁸Ca(²⁰⁹Bi, 2n), E=214 MeV using the VASSILISSA separator with the GABRIELA spectrometer at FLNR-JINR, Dubna]; measured Eγ, Iγ, x rays, E(ce), I(ce), Eα, αγ-coin, (ce)α-coin, isomer half-life by γ(t) using implantation silicon detector strips for conversion electrons and α detection, and HPGe detector array for γ detection. ²⁵¹Fm; deduced levels, J, π, conversion coefficients, multipolarities, B(M2), B(E3), and E3/M2 mixing ratio of 5/2+ to g.s transition. Comparison with previous experimental results, and with theoretical calculations. Systematics of low-lying excited states in ²⁴⁵Pu, ²⁴⁷Cm, ²⁴⁹Cf, ²⁵¹Fm, ²⁵³No, ²⁵⁵Rf.

NUCLEAR STRUCTURE ^246,247Cm, ^248,249Cf, ^250,251Fm, ^252,253No, ²⁵⁴Rf; calculated energies of 2- phonon levels in even-A, and 5/2+ states from 2- phonon levels built on 9/2- ground states in odd-A nuclei, B(E3) using QRPA with Gogny D1M parametrization, configuration amplitudes for odd-A isotopes from QPM with Woods-Saxon potential. Comparison with experimental data.

doi: 10.1103/PhysRevC.97.054332
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2015DE24      Eur.Phys.J. A 51, 66 (2015)

F.Dechery, A.Drouart, H.Savajols, J.Nolen, M.Authier, A.M.Amthor, D.Boutin, O.Delferriere, B.Gall, A.Hue, B.Laune, F.Le Blanc, S.Manikonda, J.Payet, M.-H.Stodel, E.Traykov, D.Uriot,

Toward the drip lines and the superheavy island of stability with the Super Separator Spectrometer S³

doi: 10.1140/epja/i2015-15066-3
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2015RE01      Acta Phys.Pol. B46, 623 (2015)

K.Rezynkina, K.Hauschild, A.Lopez-Martens, O.Dorvaux, B.Gall, F.Dechery, H.Faure, A.V.Yeremin, M.L.Chelnokov, V.I.Chepigin, A.V.Isaev, I.N.Izosimov, D.E.Katrasev, A.N.Kuznetsov, A.A.Kuznetsova, O.N.Malyshev, A.G.Popeko, Y.A.Popov, E.A.Sokol, A.I.Svirikhin, J.Piot, J.Rubert

First Experimental Tests of SHELS: a New Heavy Ion Separator at the JINR

NUCLEAR REACTIONS ²⁰⁸Pb(⁴⁰Ar, xn)²⁴⁵Fm/²⁴⁶Fm, ¹⁶⁴Dy(⁵⁰Ti, xn)²⁰⁹Ra/²¹⁰Ra/²¹¹Ra, E<220 MeV; measured reaction products, Eγ, Iγ; deduced yields.

doi: 10.5506/APhysPolB.46.623
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2014LO10      Eur.Phys.J. A 50, 132 (2014)

A.Lopez-Martens, K.Hauschild, K.Rezynkina, O.Dorvaux, B.Gall, F.Dechery, H.Faure, A.V.Yeremin, M.L.Chelnokov, V.I.Chepigin, A.V.Isaev, I.N.Izosimov, D.E.Katrasev, A.N.Kuznetsov, A.A.Kuznetsova, O.N.Malyshev, A.G.Popeko, E.A.Sokol, A.I.Svirikhin, J.Piot, J.Rubert

Fine structure in the alpha decay of ²²⁴U

doi: 10.1140/epja/i2014-14132-8
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2012FR03      Phys.Rev.Lett. 108, 122701 (2012)

M.O.Fregeau, D.Jacquet, M.Morjean, E.Bonnet, A.Chbihi, J.D.Frankland, M.F.Rivet, L.Tassan-Got, F.Dechery, A.Drouart, L.Nalpas, X.Ledoux, M.Parlog, C.Ciortea, D.Dumitriu, D.Fluerasu, M.Gugiu, F.Gramegna, V.L.Kravchuk, T.Marchi, D.Fabris, A.Corsi, S.Barlini

X-Ray Fluorescence from the Element with Atomic Number Z=120

NUCLEAR REACTIONS ⁶⁴Ni(²³⁸U, X)³⁰²120, E=6.6 MeV/nucleon; measured Eγ, Iγ, X-rays; deduced photon multiplicity, a minimum compound nucleus fission T_1/2, x-ray fluorescence yields.

doi: 10.1103/PhysRevLett.108.122701
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2012GR12      Phys.Rev.Lett. 109, 012501 (2012)

P.T.Greenlees, J.Rubert, J.Piot, B.J.P.Gall, L.L.Andersson, M.Asai, Z.Asfari, D.M.Cox, F.Dechery, O.Dorvaux, T.Grahn, K.Hauschild, G.Henning, A.Herzan, R.-D.Herzberg, F.P.Hessberger, U.Jakobsson, P.Jones, R.Julin, S.Juutinen, S.Ketelhut, T.-L.Khoo, M.Leino, J.Ljungvall, A.Lopez-Martens, R.Lozeva, P.Nieminen, J.Pakarinen, P.Papadakis, E.Parr, P.Peura, P.Rahkila, S.Rinta-Antila, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, D.Seweryniak, J.Sorri, B.Sulignano, Ch.Theisen, J.Uusitalo, M.Venhart

Shell-Structure and Pairing Interaction in Superheavy Nuclei: Rotational Properties of the Z=104 Nucleus ²⁵⁶Rf

NUCLEAR REACTIONS ²⁰⁸Pb(⁵⁰Ti, 2n)²⁵⁶Rf, E=242 MeV; measured reaction products, Eγ, Iγ; deduced σ, T_1/2, rotational band structure, energies, J, π, moments of inertia. Comparison with available data, systematics.

doi: 10.1103/PhysRevLett.109.012501
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2012PI05      Phys.Rev. C 85, 041301 (2012)

J.Piot, B.J.-P.Gall, O.Dorvaux, P.T.Greenlees, N.Rowley, L.L.Andersson, D.M.Cox, F.Dechery, T.Grahn, K.Hauschild, G.Henning, A.Herzan, R.-D.Herzberg, F.P.Hessberger, U.Jakobsson, P.Jones, R.Julin, S.Juutinen, S.Ketelhut, T.-L.Khoo, M.Leino, J.Ljungvall, A.Lopez-Martens, P.Nieminen, J.Pakarinen, P.Papadakis, E.Parr, P.Peura, P.Rahkila, S.Rinta-Antila, J.Rubert, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, D.Seweryniak, J.Sorri, B.Sulignano, J.Uusitalo

In-beam spectroscopy with intense ion beams: Evidence for a rotational structure in ²⁴⁶Fm

NUCLEAR REACTIONS ²⁰⁸Pb(⁴⁰Ar, 2n), E=186 MeV; measured Eγ, Iγ, γγ-coin, Eα, α(recoil) correlations, σ using JUROGAM-II array, RITU separator, and GREAT spectrometer at JYFL facility. Recoil-decay tagging technique. ²⁴⁶Fm; deduced levels, J, π, rotational band, dynamic moment of inertia plot. Comparison with ground-state bands in ^{248,250,252,254,256}Fm.

RADIOACTIVITY ²⁴⁶Fm(α); measured Eα, half-life.

doi: 10.1103/PhysRevC.85.041301
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