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NSR database version of April 26, 2024.

Search: Author = J.Louko

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2024IL01      Phys.Lett. B 848, 138371 (2024)

A.Illana, R.M.Perez-Vidal, D.Stramaccioni, J.J.Valiente-Dobon, T.R.Rodriguez, L.M.Robledo, A.Poves, K.Auranen, O.Beliuskina, C.Delafosse, T.Eronen, Z.Ge, S.Geldhof, W.Gins, T.Grahn, P.T.Greenlees, H.Joukainen, R.Julin, H.Jutila, A.Kankainen, M.Leino, J.Louko, M.Luoma, D.Nesterenko, J.Ojala, J.Pakarinen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, J.Uusitalo, G.L.Zimba

Octupole correlations in the N = Z + 2 = 56 ¹¹⁰Xe nucleus

NUCLEAR REACTIONS ⁵⁴Fe(⁵⁸Ni, 2n)¹¹⁰Xe, E=255 MeV; measured reaction products, Eγ, Iγ, Eα, Iα; deduced γ-ray energies and intensities, J, π, an octupole band . Comparison with systematics, theoretical calculations using the symmetry-conserving configuration-mixing method, based on a Gogny energy density functional. The Recoil-Decay Tagging (RDT) technique, the Mass Analysing Recoil Apparatus (MARA) vacuum mode-recoil separator, the K130 cyclotron at the Accelerator Laboratory of the University of Jyvaskylaa (JYFL), Finland.

doi: 10.1016/j.physletb.2023.138371
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2023AU03      Phys.Rev. C 108, L011303 (2023)

K.Auranen, P.Siwach, P.Arumugam, A.D.Briscoe, L.S.Ferreira, T.Grahn, P.T.Greenlees, A.Herzan, A.Illana, D.T.Joss, H.Joukainen, R.Julin, H.Jutila, M.Leino, J.Louko, M.Luoma, E.Maglione, J.Ojala, R.D.Page, J.Pakarinen, P.Rahkila, J.Romero, P.Ruotsalainen, M.Sandzelius, J.Saren, A.Tolosa-Delgado, J.Uusitalo, G.Zimba

Probing triaxiality beyond the proton drip line: Spectroscopy of ¹⁴⁷Tm

NUCLEAR REACTIONS ⁹²Mo(⁵⁸Ni, 2np)¹⁴⁷Tm, E=250 MeV; measured Eγ, Iγ, fusion-evaporation residues, recoils, γγ-coin, (recoils)γ-coin, γ(θ). ¹⁴⁷Tm; deduced levels, J, π, angular distribution coefficients, high-spin states, spin-parity of the isomeric proton decaying state, triaxiality evidences for ground-state ans isomeric state, configurations. Comparison to nonadiabatic quasiparticle model calculation. Recoil-decay tagging study using the vacuum-mode recoil separator MARA coupled with the JUROGAM3 g-ray spectrometer at Accelerator Laboratory of University of Jyvaskyla.

RADIOACTIVITY ^147mTm(p) [from ⁹²Mo(⁵⁸Ni, 2np), E=250 MeV]; measured Eγ, Iγ, recoils, γγ-coin, (recoils)γ-coin; deduced T_1/2 of the 5/2⁺ isomeric state proton decay. Recoil-decay tagging study using the vacuum-mode recoil separator MARA coupled with the JUROGAM3 g-ray spectrometer at Accelerator Laboratory of University of Jyvaskyla.

doi: 10.1103/PhysRevC.108.L011303
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2023BR10      Phys.Lett. B 847, 138310 (2023)

A.D.Briscoe, R.D.Page, J.Uusitalo, D.T.Joss, M.A.M.AlAqeel, B.Alayed, B.Andel, S.Antalic, K.Auranen, H.Ayatollahzadeh, H.Badran, L.Barber, G.Beeton, M.Birova, V.Bogdanoff, R.M.Clark, J.G.Cubiss, D.M.Cullen, J.Deary, U.Forsberg, T.Grahn, P.T.Greenlees, J.B.Hilton, A.Illana, H.Joukainen, D.S.Judson, R.Julin, H.Jutila, J.M.Keatings, M.Labiche, M.Leino, M.C.Lewis, J.Louko, M.Luoma, I.Martel, A.McCarter, P.P.McKee, P.Mosat, S.N.Nathaniel, O.Neuvonen, D.O'Donnell, J.Ojala, C.A.A.Page, A.M.Plaza, J.Pakarinen, P.Papadakis, E.Parr, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, B.Saygi, J.Smallcombe, J.F.Smith, J.Sorri, C.M.Sullivan, S.Szwec, H.Tann, A.Tolosa-Delgado, E.Uusikyla, M.Venhart, L.J.Waring, G.Zimba

Decay spectroscopy at the two-proton drip line: Radioactivity of the new nuclides ¹⁶⁰Os and ¹⁵⁶W

RADIOACTIVITY ¹⁶⁰Os(α), ¹⁵⁶W(β⁺), (EC), ¹⁵⁶Ta(p) [from ¹⁰⁶Cd(⁵⁸Ni, X)¹⁶⁰Os, ¹⁰²Pd(⁵⁸Ni, X)¹⁵⁶Ta, E=310, 294 MeV]; measured decay products, Eα, Iα, Ep, Ip, Eβ, Iβ; deduced α-particles energies, T_1/2, an improved value for the half-life of the proton-decaying high-spin isomeric state. Comparison with available data. The recoil separator MARA, the Accelerator Laboratory of the University of Jyvaskyla.

doi: 10.1016/j.physletb.2023.138310
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2023CO04      Phys.Rev. C 107, L021301 (2023)

D.M.Cox, A.Saamark-Roth, D.Rudolph, L.G.Sarmiento, R.M.Clark, J.L.Egido, P.Golubev, J.Heery, A.Yakushev, S.AAberg, H.M.Albers, M.Albertsson, M.Block, H.Brand, T.Calverley, R.Cantemir, B.G.Carlsson, Ch.E.Dullmann, J.Eberth, C.Fahlander, U.Forsberg, J.M.Gates, F.Giacoppo, M.Gotz, S.Gotz, R.-D.Herzberg, Y.Hrabar, E.Jager, D.Judson, J.Khuyagbaatar, B.Kindler, I.Kojouharov, J.V.Kratz, J.Krier, N.Kurz, L.Lens, J.Ljungberg, B.Lommel, J.Louko, C.-C.Meyer, A.Mistry, C.Mokry, P.Papadakis, E.Parr, J.L.Pore, I.Ragnarsson, J.Runke, M.Schadel, H.Schaffner, B.Schausten, D.A.Shaughnessy, P.Thorle-Pospiech, N.Trautmann, J.Uusitalo

Spectroscopy along flerovium decay chains. II. Fine structure in odd-A ²⁸⁹Fl

RADIOACTIVITY ²⁸⁹Fl(α) [from ²⁴⁴Pu(⁴⁸Ca, X), E=6.02 MeV/nucleon]; ²⁸⁵Cn(α) [from ²⁸⁹Fl(α)]; ²⁸¹Ds(α) [from ²⁸⁵Cn(α)]; ²⁷⁷Hs(SF) [from ²⁸¹Ds(α)]; measured decay products, Eα, Iα, Eβ, Iβ αβ-coin, αα-coin, (fragment)αα-coin; deduced Q-values, T_1/2, branching ratios, hindrance factor. ²⁸⁹Fl, ²⁸⁵Cn, ²⁸¹Ds; deduced J, π and δ assignments based on the derived decay path. Comparison with structure calculations based on the symmetry-conserving configuration mixing theory. Gas-filled recoil separator TASCA was used to transmit, select, and focus the flerovium ions into an upgraded version of the TASISpec decay station consisting of implantation DSSD, veto DSSD and set of HPGe detectors (GSI).

doi: 10.1103/PhysRevC.107.L021301
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2023SA03      Phys.Rev. C 107, 024301 (2023)

A.Saamark-Roth, D.M.Cox, D.Rudolph, L.G.Sarmiento, M.Albertsson, B.G.Carlsson, J.L.Egido, P.Golubev, J.Heery, A.Yakushev, S.AAberg, H.M.Albers, M.Block, H.Brand, T.Calverley, R.Cantemir, R.M.Clark, Ch.E.Dullmann, J.Eberth, C.Fahlander, U.Forsberg, J.M.Gates, F.Giacoppo, M.Gotz, S.Gotz, R.-D.Herzberg, Y.Hrabar, E.Jager, D.Judson, J.Khuyagbaatar, B.Kindler, I.Kojouharov, J.V.Kratz, J.Krier, N.Kurz, L.Lens, J.Ljungberg, B.Lommel, J.Louko, C.-C.Meyer, A.Mistry, C.Mokry, P.Papadakis, E.Parr, J.L.Pore, I.Ragnarsson, J.Runke, M.Schadel, H.Schaffner, B.Schausten, D.A.Shaughnessy, P.Thorle-Pospiech, N.Trautmann, J.Uusitalo

Spectroscopy along flerovium decay chains. III. Details on experiment, analysis, ²⁸²Cn, and spontaneous fission branches

RADIOACTIVITY ^{290,288,286,284}Fl(α)(SF) [from ²⁴⁴Pu(⁴⁸Ca, X), E=6.02 MeV/nucleon]; ²⁸²Cn(α)(SF) [²⁸⁶Fl(α)]; ²⁸⁴Cn(α)(SF) [from ²⁸⁸Fl(α)]; ²⁸⁶Cn(α)(SF) [²⁹⁰Fl(α)]; ²⁸²Ds(α)(SF) [from ²⁸⁶Cn(α)]; ²⁸⁰Ds(α)(SF) [from ²⁸⁴Cn(α)]; measured decay products, Eα, Iα, Eβ, Iβ αβ-coin, αα-coin, (fragment)αα-coin; deduced Q-values, T_1/2, branching ratios, hindrance factor. ²⁸²Cn; deduced levels, J, π, T_1/2 of excited states, transition rates, monopole transition strengths. Comparison to macroscopic-microscopic finite-range liquid-drop model, self-consistent Hartree-Fock-Bogoliubov calculations and other experimental data. Gas-filled recoil separator TASCA was used to transmit, select, and focus the flerovium ions into an upgraded version of the TASISpec decay station consisting of implantation DSSD, veto DSSD and set of HPGe detectors (GSI).

doi: 10.1103/PhysRevC.107.024301
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2023WI05      Phys.Lett. B 847, 138249 (2023)

K.Wimmer, P.Ruotsalainen, S.M.Lenzi, A.Poves, T.Huyuk, F.Browne, P.Doornenbal, T.Koiwai, T.Arici, K.Auranen, M.A.Bentley, M.L.Cortes, C.Delafosse, T.Eronen, Z.Ge, T.Grahn, P.T.Greenlees, A.Illana, N.Imai, H.Joukainen, R.Julin, A.Jungclaus, H.Jutila, A.Kankainen, N.Kitamura, B.Longfellow, J.Louko, R.Lozeva, M.Luoma, B.Mauss, D.R.Napoli, M.Niikura, J.Ojala, J.Pakarinen, X.Pereira-Lopez, P.Rahkila, F.Recchia, M.Sandzelius, J.Saren, R.Taniuchi, H.Tann, S.Uthayakumaar, J.Uusitalo, V.Vaquero, R.Wadsworth, G.Zimba, R.Yajzey

Isospin symmetry in the T = 1, A=62 triplet

NUCLEAR REACTIONS ¹²C(⁶²Zn, ⁶²Zn'), (⁶²Ga, ⁶²Ga'), (⁶²Ge, ⁶²Ge'), E ∼ 165 MeV/nucleon; ²⁴Mg(⁴⁰Ca, 2n)⁶²Ge, E=106 MeV; measured reaction products, Eγ, Iγ. ⁶²Zn, ⁶²Ga, ⁶²Ge; deduced γ-ray energies, J, π, level schemes, mirror energy differences as a function of the spin of the state. Comparison with the shell-model calculations with the K3BGR (GXPF1A) effective interactions. The Radioactive Isotope Beam Facility operated by the RIKEN Nishina Center and CNS, University of Tokyo, and the Accelerator Laboratory of the University of Jyvaskyla (JYFL-ACCLAB).

doi: 10.1016/j.physletb.2023.138249
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2022AU01      Phys.Rev.Lett. 128, 112501 (2022)

K.Auranen, A.D.Briscoe, L.S.Ferreira, T.Grahn, P.T.Greenlees, A.Herzan, A.Illana, D.T.Joss, H.Joukainen, R.Julin, H.Jutila, M.Leino, J.Louko, M.Luoma, E.Maglione, J.Ojala, R.D.Page, J.Pakarinen, P.Rahkila, J.Romero, P.Ruotsalainen, M.Sandzelius, J.Saren, A.Tolosa-Delgado, J.Uusitalo, G.Zimba

Nanosecond-Scale Proton Emission from Strongly Oblate-Deformed ¹⁴⁹Lu

RADIOACTIVITY ¹⁴⁹Lu(p) [from ⁹⁶Ru(⁵⁸Ni, 4np)¹⁴⁹Lu, E=310, 320 MeV]; measured decay products, Eγ, Iγ, Ep, Ip; deduced energy spectrum of the protons, proton decay T_1/2, Q-value. Comparison with theoretical calculations. The MARA vacuum-mode recoil separator, the K130 cyclotron of University of Jyvaskyla.

doi: 10.1103/PhysRevLett.128.112501
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Data from this article have been entered in the XUNDL database. For more information, click here.

2021SA01      Phys.Rev.Lett. 126, 032503 (2021)

A.Samark-Roth, D.M.Cox, D.Rudolph, L.G.Sarmiento, B.G.Carlsson, J.L.Egido, P.Golubev, J.Heery, A.Yakushev, S.Aberg, H.M.Albers, M.Albertsson, M.Block, H.Brand, T.Calverley, R.Cantemir, R.M.Clark, C.E.Dullmann, J.Eberth, C.Fahlander, U.Forsberg, J.M.Gates, F.Giacoppo, M.Gotz, S.Gotz, R.-D.Herzberg, Y.Hrabar, E.Jager, D.Judson, J.Khuyagbaatar, B.Kindler, I.Kojouharov, J.V.Kratz, J.Krier, N.Kurz, L.Lens, J.Ljungberg, B.Lommel, J.Louko, C.-C.Meyer, A.Mistry, C.Mokry, P.Papadakis, E.Parr, J.L.Pore, I.Ragnarsson, J.Runke, M.Schadel, H.Schaffner, B.Schausten, D.A.Shaughnessy, P.Thorle-Pospiech, N.Trautmann, J.Uusitalo

Spectroscopy along Flerovium Decay Chains: Discovery of ²⁸⁰Ds and an Excited State in ²⁸²Cn

RADIOACTIVITY ^286,288Fl, ²⁸⁴Cn(α), ²⁸²Cn, ²⁸⁰Ds(SF) [from ^242,244Pu(⁴⁸Ca, X)²⁸⁶Fl/²⁸⁸Fl, E=6.021 MeV/nucleon]; measured decay products, Eα, Iα, Eβ, Iβ α-β coin.; deduced Q-values, T_1/2, J, π. Comparison with theoretical calculations. The gas-filled separator TASCA at the GSI.

doi: 10.1103/PhysRevLett.126.032503
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Data from this article have been entered in the XUNDL database. For more information, click here.

2020DE24      JETP Lett. 111, 409 (2020)

A.S.Demyanova, A.N.Danilov, A.A.Ogloblin, V.I.Starastsin, S.V.Dmitriev, W.H.Trzaska, S.A.Goncharov, T.L.Belyaeva, V.A.Maslov, Yu.G.Sobolev, Yu.E.Penionzhkevich, S.V.Khlebnikov, G.P.Tyurin, N.Burtebaev, D.Janseitov, Yu.B.Gurov, J.Louko, V.M.Sergeev

States of the ¹²N Nucleus with Increased Radii

NUCLEAR REACTIONS ¹²C(³He, t), E=40 MeV; measured reaction products; deduced σ(θ), rms radii of ¹²N obtained by the MDM analysis.

doi: 10.1134/S0021364020080020
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2529.

2020SO19      Bull.Rus.Acad.Sci.Phys. 84, 948 (2020)

Yu.G.Sobolev, Yu.E.Penionzhkevich, V.V.Samarin, M.A.Naumenko, S.S.Stukalov, I.Sivacek, S.A.Krupko, A.Kugler, J.Louko

Total Reaction Cross Sections for ^{6, 8}He and ⁹Li Nuclei on ²⁸Si, ⁵⁹Co, and ¹⁸¹Ta Targets

NUCLEAR REACTIONS ²⁸Si, ⁵⁹Co, ¹⁸¹Ta(⁶He, X), (⁸He, X), (⁹Li, X), E=6-36 MeV/nucleon; measured reaction products, Eγ, Iγ, En, In; deduced total reaction σ and the multiplicity distributions for the emission of γ-rays and neutrons.

doi: 10.3103/S1062873820080286
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF1453.