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NSR database version of May 24, 2024.

Search: Author = C.Costache

Found 33 matches.

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2024BA08      Appl.Radiat.Isot. 208, 111289 (2024)

S.Bara, E.Jajcisinova, T.E.Cocolios, B.Andel, S.Antalic, A.Camaiani, C.Costache, K.Dockx, G.J.Farooq-Smith, A.Kellerbauer, R.Lica, K.M.Lynch, P.Marini, M.Piersa-Silkowska, S.T.Stegemann, M.Stryjczyk, D.Treasa, P.Van Duppen

Half-life determination of 215At and 221Ra with high-purity radioactive ion beams

RADIOACTIVITY 215At, 221Ra(α) [from U(p, X), E=1.4 GeV]; measured decay products, Eα, Iα; deduced T1/2, α-decay widths and hindrance factors. Comparison with available data. The CRIS and ASET experiments in the course of three different experimental campaigns at ISOLDE, CERN.

doi: 10.1016/j.apradiso.2024.111289
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2024KU10      Nuovo Cim. C 47, 47 (2024)

A.Kusoglu, P.Constantin, P.-A.Soderstrom, D.L.Balabanski, M.Cuciuc, S.Aogaki, R.S.Ban, R.Borcea, R.Corbu, C.Costache, A.Covali, I.Dinescu, N.M.Florea, V.Iancu, A.Ionescu, N.M.Marginean, C.Mihai, R.E.Mihai, C.Nedelcu, A.Coman, H.Pai, A.Pappalardo, O.Sirbu, L.Stan, C.Sotty, D.A.Testov, T.Tozar, A.Turturica, G.Turturica, S.Ujeniuc, C.A.Ur, V.Vasilca, F.Zhu

Ground-breaking developments in 10B with inelastic proton scattering

NUCLEAR REACTIONS 10B(p, p'), E=8.5 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced γ-ray energies and relative intensities, branching ratios. Comparison with available data. The 9 MV Tandem accelerator facility at IFIN-HH.

doi: 10.1393/ncc/i2024-24047-6
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2024SO08      Nuovo Cim. C 47, 58 (2024)

P.-A.Soderstrom, A.Kusoglu, D.L.Balabanski, M.Brezeanu, D.Choudhury, A.Gavrilescu, R.A.Gucbtoiu, S.Ioannidis, G.Lorusso, M.Markova, R.Roy, D.Testov, S.Adachi, S.Aogaki, R.Borcea, F.Camera, P.Constantin, C.Costache, M.Cuciuc, F.C.L.Crespi, N.M.Florea, Y.Fujikawa, T.Furuno, A.Giaz, T.Kawabata, C.Mihai, R.E.Mihai, B.Million, D.Nichita, R.Niina, S.Okamoto, K.Sakanashi, L.Stan, A.Tamii, A.Turturica, S.Ujeniuc, O.Wieland, R.S.Ban, M.Ciemala, G.Ciocan, C.Clisu, I.Dinescu, D.Iancu, M.Kmiecik, V.Lelasseux, R.Lica, N.M.Marginean, C.Neaccbsu, H.Pai, P.Parlea, T.Petruse, A.Rotaru, C.O.Sotty, A.Spataru, A.N.State, M.Straticiuc, D.Tofan, S.Toma, T.Tozar, G.V.Turturica, C.A.Ur

From implementation to operation and the first measurements with the ELIGANT detectors from ELI-NP

NUCLEAR REACTIONS 112Sn(p, p'), E not given; measured reaction products, Ep, Ip; deduced preliminary level density. Comparison with three microscopic models. The ELIGANT-GN detectors at ROSPHERE.

doi: 10.1393/ncc/i2024-24058-3
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2024WI01      Nuovo Cim. C 47, 24 (2024)

O.Wieland, A.Bracco, F.Camera, S.Aogaki, D.L.Balabanski, E.Boicu, R.Borcea, M.Boromiza, I.Burducea, S.Calinescu, A.Coman, P.Constantin, C.Costache, M.Ciemala, Gh.Ciocan, C.Clisu, F.C.L.Crespi, M.Cuciuc, A.Dhal, N.Djourelov, N.M.Florea, I.Gheorghe, A.Giaz, D.Iancu, D.M.Kahl, M.Kmiecik, A.Kusoglu, R.Lica, N.Mvarginean, A.Maj, R.Marginean, C.Mihai, R.E.Mihai, B.Million, C.Neacsu, D.Nichita, C.Nitva, H.Pai, A.Pappalardo, T.Petruse, A.Rotaru, A.B.Serban, P.-A.Soderstrom, C.O.Sotty, L.Stan, A.N.State, I.Stiru, A.Stoica, D.A.Testov, S.Toma, T.Tozar, A.Turturica, G.V.Turturica, S.Ujeniuc, V.Vasilca, Y.Xu

Extra yield in hot Ni isotopes below the Giant Dipole Resonance

NUCLEAR REACTIONS 24Mg(32S, X)56Ni, E=90 MeV; 26Mg(34S, X)60Ni, E=79 MeV; 26Mg(36S, X)62Ni, E=78 MeV; measured reaction products, Eγ, Iγ; deduced yields, linearized measured γ-ray yields, the tail of the Giant Dipole Resonance which may be attributed to a Pygmy Dipole Resonance in an excited nucleus with statistical model using a Monte Carlo approach. The IFIN 9 MV Tandem facility.

doi: 10.1393/ncc/i2024-24024-1
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2023XU06      Phys.Rev.Lett. 131, 022501 (2023)

Z.Y.Xu, M.Madurga, R.Grzywacz, T.T.King, A.Algora, A.N.Andreyev, J.Benito, T.Berry, M.J.G.Borge, C.Costache, H.De Witte, A.Fijalkowska, L.M.Fraile, H.O.U.Fynbo, A.Gottardo, C.Halverson, L.J.Harkness-Brennan, J.Heideman, M.Huyse, A.Illana, L.Janiak, D.S.Judson, A.Korgul, T.Kurtukian-Nieto, I.Lazarus, R.Lica, R.Lozeva, N.Marginean, R.Marginean, C.Mazzocchi, C.Mihai, R.E.Mihai, A.I.Morales, R.D.Page, J.Pakarinen, M.Piersa-Silkowska, Z.Podolyak, P.Sarriguren, M.Singh, C.Sotty, M.Stepaniuk, O.Tengblad, A.Turturica, P.Van Duppen, V.Vedia, S.Vinals, N.Warr, R.Yokoyama, C.X.Yuan

133In: A Rosetta Stone for Decays of r-Process Nuclei

RADIOACTIVITY 133In(IT), (β-), (β-n); measured decay products, En, In, Eβ, Iβ, Eγ, Iγ; deduced excitation energy and decay strength, partial T1/2. Comparison with large-scale shell model (LSSM) calculations. The ISOLDE Decay Station (IDS), The Isotope Separator On-Line (ISOLDE) facility at CERN.

doi: 10.1103/PhysRevLett.131.022501
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2023XU08      Phys.Rev. C 108, 014314 (2023)

Z.Y.Xu, M.Madurga, R.Grzywacz, T.T.King, A.Algora, A.N.Andreyev, J.Benito, T.Berry, M.J.G.Borge, C.Costache, H.De Witte, A.Fijalkowska, L.M.Fraile, H.O.U.Fynbo, A.Gottardo, C.Halverson, L.J.Harkness-Brennan, J.Heideman, M.Huyse, A.Illana, L.Janiak, D.S.Judson, A.Korgul, T.Kurtukian-Nieto, I.Lazarus, R.Lica, R.Lozeva, N.Marginean, R.Marginean, C.Mazzocchi, C.Mihai, R.E.Mihai, A.I.Morales, R.D.Page, J.Pakarinen, M.Piersa-Silkowska, Zs.Podolyak, P.Sarriguren, M.Singh, Ch.Sotty, M.Stepaniuk, O.Tengblad, A.Turturica, P.Van Duppen, V.Vedia, S.Vinals, N.Warr, R.Yokoyama, C.X.Yuan

β-delayed neutron spectroscopy of 133In

RADIOACTIVITY 133,133mIn(β-)(β-n); decay products, neutron time-of-flight, En, In, Eβ, Iβ, Eγ, Iγ, βγ-coin, nβ-coin; deduced feeding intensities, neutron-emission probabilities, logft, β-decay strength distribution, Gamow-Teller transition. 133Sn; deduced levels, J, π, configurations. Comparison of 133Sn and 131Sn level schemes. The ISOLDE Decay Station (IDS) at The Isotope Separator On-Line (ISOLDE) facility at CERN.

doi: 10.1103/PhysRevC.108.014314
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2022AV01      Eur.Phys.J. A 58, 3 (2022)

M.Avrigeanu, D.Rochman, A.J.Koning, U.Fischer, D.Leichtle, C.Costache, V.Avrigeanu

Advanced breakup-nucleon enhancement of deuteron-induced reaction cross sections

NUCLEAR REACTIONS 58Ni, 96Zr, 231Pa(d, X), (d, 2n), (d, 2p), E<200 MeV; calculated σ using TALYS-1.95 nuclear model code. Comparison with available data.

doi: 10.1140/epja/s10050-021-00659-6
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2022IV01      Phys.Rev. C 105, 034337 (2022)

D.Ivanova, S.Lalkovski, C.Costache, S.Kisyov, C.Mihai, N.Marginean, P.Petkov, L.Atanasova, D.Bucurescu, R.B.Cakirli, M.P.Carpenter, R.F.Casten, Gh.Cata-Danil, I.Cata-Danil, D.Deleanu, D.Filipescu, N.Florea, I.Gheorghe, D.Ghita, T.Glodariu, F.G.Kondev, R.Lica, R.Marginean, A.Negret, S.Pascu, T.Sava, E.A.Stefanova, L.Stroe, G.Suliman, R.Suvaila, O.Yordanov, N.V.Zamfir

Structure of the low-lying states in 99, 101, 103, 105Pd

NUCLEAR REACTIONS 90,92,94Zr(12C, 3n), E=45 MeV; 96Zr(13C, 4n), E=55 MeV; measured Eγ, Iγ, γγ-coin. 94Zr(12C, 3n), E=56 MeV; measured Eγ, Iγ, γγ-coin with plunger device. 99,101,103,105Pd; deduced levels, J, π, B(M1), B(E2), T1/2 of excited states, multipolarity, δ, high-spin states, bands structure. Half-lives were determined by centroid shift method, deconvolution method and differential decay curve method (on case of 103Pd experiment with plunger). Comparison with rigid triaxial rotor plus particle model (RTRPM) calculations. RoSphere array comprised of 8 HPGe and 11 LaBr3:Ce detectors at IFIN-HH (Romania).

doi: 10.1103/PhysRevC.105.034337
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2022MI15      Phys.Rev. C 106, 024332 (2022)

R.E.Mihai, A.S.Mare, N.Marginean, A.Petrovici, O.Andrei, M.Boromiza, D.Bucurescu, G.Cata-Danil, C.Clisu, C.Costache, I.Dinescu, D.Filipescu, N.Florea, I.Gheorghe, A.Ionescu, R.Lica, R.Marginean, C.Mihai, A.Mitu, A.Negret, C.R.Nita, A.Olacel, A.Oprea, S.Pascu, A.Serban, C.Sotty, L.Stan, R.Suvaila, S.Toma, A.Turturica, S.Ujeniuc, C.A.Ur

Search for isospin-symmetry breaking in the A=62 isovector triplet

NUCLEAR REACTIONS 58Ni(6Li, 2n)62Ga, E=22 MeV; measured Eγ, Iγ, nγ-coin, (2n)γ-coin, γ(θ) using ROSPHERE array with ten Compton-suppressed HPGe detectors and 11 LaBr3(Ce) detectors for γ rays, and two liquid scintillator neutron detector walls with 12 detectors each neutrons at the IFIN-HH 9-MV Tandem accelerator. 62Ga; deduced levels, J, π, first 2+ state, multipolarities. Comparison with beyond-mean-field complex excited Vampir variational model. Discussed Coulomb energy differences (CED), mirror energy differences (MED), triplet energy differences (TED) for A=62 triplet. 59Ni, 62Cu, 62Zn; observed γ rays.

NUCLEAR STRUCTURE 62Ge, 62Ga, 62Zn; calculated energies of low-lying 0+, 2+ and 4+ analog states, B(E2) for 62Zn, superallowed Fermi β decay strength distribution from 62Ga decay to 62Ge g.s., and compared with available experimental values.

doi: 10.1103/PhysRevC.106.024332
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2022OL05      Phys.Rev. C 106, 024609 (2022)

A.Olacel, C.Borcea, M.Boromiza, S.Calinescu, C.Clisu, C.Costache, Ph.Dessagne, I.Dinescu, D.Filipescu, N.Florea, I.Harca, G.Henning, A.Ionescu, M.Kerveno, R.Lica, A.Matei, C.Mihai, R.Mihai, A.Mitu, A.Negret, C.Nita, M.Nyman, A.Oprea, C.Petrone, A.J.M.Plompen, C.Sotty, L.Stan, L.Stoica, G.Suliman, A.Turturica, S.Ujeniuc

Nucleon-induced inelastic cross sections on natNi

NUCLEAR REACTIONS 58,60,64Ni(n, n'γ), E=2-17 MeV; 58Ni(p, p'γ), E=4-17 MeV; measured Eγ, Iγ; deduced total σ(E) and exclusive σ(E) for population of particular levels, γ-production σ(E). Comparison to other experimental data and TALYS-1.9 calculations using semimicroscopical (JLM) nucleon OMP. Neutron-beam experiment: Gamma Array for Inelastic Neutron Scattering (GAINS) spectrometer setup at Geel Electron Linear Accelerator (GELINA) neutron source. Proton-beam experiment: two HPGe detectors at 9-MV Tandem facility of the Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH).

doi: 10.1103/PhysRevC.106.024609
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2021AY05      Phys.Rev. C 104, 054309 (2021)

S.Aydin, M.Ionescu-Bujor, N.Marginean, C.Costache, D.Bucurescu, N.Florea, T.Glodariu, A.Ionescu, A.Iordachescu, R.Marginean, C.Mihai, R.E.Mihai, A.Mitu, A.Negret, C.R.Nita, A.Olacel, S.Pascu, L.Stroe, R.Suvaila, S.Toma, A.Turturica

Lifetime measurements and evidence for triaxial nuclear shapes in 127Cs

NUCLEAR REACTIONS 121Sb(12C, 2nα)127Cs, E=54 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(ADO ratios), level T1/2 by DSAM and by fast-timing method using an array of LaBr3(Ce) detectors and ROSPHERE array for γ detection at the FN Tandem accelerator of IFIN-HH-Bucharest. 127Cs; deduced high-spin levels, J, π, bands, multipolarities, multipole mixing ratios, B(M1), B(E2), signature splitting S(J), configurations, evidence for triaxial nuclear shapes in the states described by the proton h11/2 orbital, soft core for quadrupole deformation and shape asymmetry due to polarizing h11/2 protons. Comparison with quasiparticle plus triaxial rotor (QTR) model predictions.

doi: 10.1103/PhysRevC.104.054309
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2021SI31      Phys.Rev. C 104, 044615 (2021)

E.Simeckova, M.Avrigeanu, J.Mrazek, J.Novak, M.Stefanik, C.Costache, V.Avrigeanu

Deuteron-induced reactions on natZr up to 60 MeV

NUCLEAR REACTIONS Zr(d, xn), (d, p), (d, xnp), (d, xn2p), 90Nb/91mNb/92mNb/94mNb/95Nb/95mNb/96Nb/97Nb/89Zr/89mZr/95Zr/97Zr/87Y/87mY/88Y/90mY/91mY/94Y, E=4.32-19.80 MeV from U-120M cyclotron of CANAM-NPI-CAS; measured Eγ, Iγ, activation σ(E) by stacked-foil technique and off-line γ-ray spectroscopy using two HPGe detectors, natural Zr target. 90Zr(d, d), E=5.5, 9, 10, 11, 12, 13, 15, 23.2, 28.8, 56 MeV; 90,91,92,94,96Zr(d, d), E=34.4 MeV; analyzed available experimental σ(θ, E) data using global optical model potential (OMP), and used to analyze literature particle-transfer σ(θ) data for excited states in residual nuclei. 90Zr(d, p), E=15.89 MeV; 91,92Zr(d, p), E=12 MeV; 92,96Zr(d, p), E=33.3 MeV; 94Zr(d, p), E not given; 90Zr(d, n), E=12 MeV; 90Zr(d, α), E=17 MeV; 94,96Zr(d, α), E=11.5, 28 MeV; 90Zr(d, t), E=21.14 MeV; 91,92,94,96Zr(d, t), E=11.8 MeV; 91Zr(3He, d), E=17 MeV; Zr(d, xn)91,95Nb, 94Zr(d, n), 96Zr(d, 3n), E=10-60 MeV; Zr(d, xnp)88Zr, E=20-60 MeV; Zr(d, x)86Y/87Y/87mY/88Y/90mY, E=5-60 MeV; 94Zr(d, xnp)88Zr, E=20-60 MeV; 94Zr(d, xn2p)86Y, E=20-60 MeV; analyzed literature experimental σ(θ) and σ(E) data using pre-equilibrium emission (PE) and compound nucleus (CN) decay statistical emission mechanisms, with the inclusion of deuteron breakup (BU). Comparison of activation cross section data with TENDL-2019 evaluation and model calculations. For particle transfer reactions data taken from literature, level energies, J, π and spectroscopic factors are given in the Supplemental Material.

doi: 10.1103/PhysRevC.104.044615
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2021TU02      Phys.Rev. C 103, 044306 (2021)

A.Turturica, C.Costache, P.Petkov, J.-P.Delaroche, M.Girod, J.Libert, G.Cata-Danil, S.Pascu, C.Mihai, M.Boromiza, D.Bucurescu, C.Clisu, D.Filipescu, N.M.Florea, I.Gheorghe, A.Ionescu, R.Lica, N.M.Marginean, R.Marginean, R.E.Mihai, A.Mitu, A.Negret, C.R.Nita, A.Olacel, A.Oprea, T.Sava, C.Sotty, L.Stan, I.Stiru, R.Suvaila, S.Toma, G.V.Turturica, S.Ujeniuc

Collective properties of neutron-deficient Nd isotopes: Lifetime measurements of the yrast states in 136Nd

NUCLEAR REACTIONS 124Te(16O, 4n), E=80 MeV; measured Eγ, Iγ, γγ-coin, half-lives of levels by recoil distance Doppler shift (RDDS) and Doppler-shift attenuation (DSA) methods and analysis by differential decay curve method (DDCM) using ROSPHERE array at the tandem accelerator facility of IFINHH-Bucharest-Magurele. 136Nd; deduced levels, J, π, bands, B(E2). Comparison with five-dimensional collective Hamiltonian (5DCH) calculations with D1S Gogny force. Systematics of energies of ground state and γ bands, and other observables in 130,132,134,136,138,140Nd.

NUCLEAR STRUCTURE 130,132,134,136,138,140Nd; calculated potential energy surfaces (PES) in (β, γ) plane, mean β and γ deformations, moments of inertia for yrast bands, B(E2), even-odd staggering parameter, spectroscopic quadrupole moments, charge radii and isotope shifts, ρ2(E0) rates. Five-dimensional collective Hamiltonian (5DCH) calculations with D1S Gogny force. Comparison with experimental data.

doi: 10.1103/PhysRevC.103.044306
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021VO14      Phys.Lett. B 821, 136624 (2021)

M.von Tresckow, M.Rudigier, T.M.Shneidman, T.Kroll, M.Boromiza, C.Clisu, C.Costache, d.Filipescu, N.M.Florea, I.Gheorghe, K.Gladnishki, A.Ionescu, D.Kocheva, R.Lica, N.Marginean, R.Marginean, K.R.Mashtakov, C.Mihai, R.E.Mihai, A.Negret, C.R.Nita, A.Olacel, A.Oprea, S.Pascu, G.Rainovski, T.Sava, M.Scheck, P.Spagnoletti, C.Sotty, L.Stan, I.Stiru, S.Toma, A.Turturica, S.Ujeniuc

New evidence for alpha clustering structure in the ground state band of 212Po

NUCLEAR REACTIONS 208Pb(10B, 6Li)212Po, E=51 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, level T1/2, B(E2). ROSPHERE array, Horia Hulubei National Institute. Delayed coincidence fast-timing method.

doi: 10.1016/j.physletb.2021.136624
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2020AV01      Phys.Rev. C 101, 024605 (2020)

M.Avrigeanu, E.Simeckova, U.Fischer, J.Mrazek, J.Novak, M.Stefanik, C.Costache, V.Avrigeanu

Deuteron-induced reactions on manganese at low energies

NUCLEAR REACTIONS 55Mn(d, p), (d, t), (d, 2nα), E=3.13-19.49 MeV; measured Eγ, Iγ, σ(E), by activation method at the variable-energy cyclotron U-120M facility of NPI-CAS, Rez. 55Mn(d, p), (d, t), (d, 2nt), (d, 2nα), E<50 MeV; analyzed present and previous data for σ(E). 55Mn(d, p)56Mn, E=7.5 MeV; 55Mn(d, t)54Mn, E=17, 18 MeV; analyzed previous differential σ(θ) data for 20 levels in 56Mn up to 4.54 MeV, and for 25 levels in 54Mn up to 3.42 MeV. Comparison with TALYS-1.9 theoretical calculations. Discussed deuteron breakup (BU) and direct reaction (DR) mechanisms.

doi: 10.1103/PhysRevC.101.024605
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0973.


2020BU08      Phys.Rev. C 102, 024336 (2020)

D.Bucurescu, C.Mihai, C.Costache, R.E.Mihai, N.Marginean, S.Kisyov, N.Florea, G.Cata-Danil, I.Cata-Danil, R.Lica, R.Marginean, A.Negret, C.R.Nita, S.Pascu, L.Stroe, G.Suliman, R.Suvaila, C.A.Ur

Reexamined lifetimes of the low-lying states of 86Zr by recoil distance differential decay measurements

NUCLEAR REACTIONS 73Ge(16O, 3n)86Zr, E=57 MeV; measured Eγ, Iγ, γγ-coin, level half-lives by recoil distance Doppler shift method and DDCM analysis, using the ROSPHERE detector array of 15 HPGe detectors with BGO shields and nine LaBr3(Ce) detectors at the HH-NIPNE-Bucharest tandem accelerator facility. 86Zr; deduced levels, J, π, B(E2), B(M1), B(E1). Comparison with theoretical calculations using IBM-1 model, IBM-1 model with broken pairs, and shell-model. Comparison with previous experimental data in the ENSDF database.

doi: 10.1103/PhysRevC.102.024336
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2020IO02      Phys.Rev. C 102, 044311 (2020)

M.Ionescu-Bujor, S.Aydin, A.Iordachescu, N.Marginean, S.Pascu, D.Bucurescu, C.Costache, N.Florea, T.Glodariu, A.Ionescu, R.Marginean, C.Mihai, R.E.Mihai, A.Mitu, A.Negret, C.R.Nita, A.Olacel, B.SaygI, L.Stroe, R.Suvaila, S.Toma, A.Turturica

Band structures, lifetimes, and shape coexistence in 130La

NUCLEAR REACTIONS 121Sb(12C, 3n)130La, E=54 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(ADO), isomer and level half-lives by γγ(t) using the ROSPHERE array of 14 HPGe detectors and 11 LaBr3(Ce) scintillators at the FN Tandem accelerator of IFINHH-Bucharest. 130La; deduced high-spin levels, J, π, bands, multipolarities, configurations, B(M1), B(E2), transition quadrupole moments, β2 deformation parameters. Comparison with two-quasiparticle-plus-rotor model calculations, and with geometrical model of Donau and Frauendorf for B(M1) strengths.

doi: 10.1103/PhysRevC.102.044311
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2020IS08      Phys.Rev. C 102, 054324 (2020)

L.W.Iskra, S.Leoni, B.Fornal, C.Michelagnoli, F.Kandzia, N.Marginean, M.Barani, S.Bottoni, N.Cieplicka-Orynczak, G.Colombi, C.Costache, F.C.L.Crespi, J.Dudouet, M.Jentschel, Y.H.Kim, U.Koster, R.Lica, R.Marginean, C.Mihai, R.E.Mihai, C.R.Nita, S.Pascu, C.Porzio, D.Reygadas, E.Ruiz-Martinez, A.Turturica

γ spectroscopy of the 96Y isotope: Searching for the onset of shape coexistence before N = 60

NUCLEAR REACTIONS 233,235U(n, F), E=thermal; measured fission events, Eγ, Iγ, double and triple γγ-coin tagged by fission events, γγ(θ), half-life of (6+) isomer by γγ(t) using FIPPS array of 16 HPGe clover detectors at ILL-Grenoble. 96Y; deduced levels, J, π, conversion coefficients, mixing ratios, multipolarities, configurations, shape coexistence. Comparison with predictions of Hartree-Fock-Bogoliubov calculations in literature. Possible relevance to calculations of electron and antineutrino spectra from fission of actinides. 137I; measured γγ-coin, relative yields of the cross-coincidence iodine fission partners.

doi: 10.1103/PhysRevC.102.054324
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2020LE07      Phys.Rev. C 102, 014308 (2020)

A.I.Levon, D.Bucurescu, C.Costache, T.Faestermann, R.Hertenberger, A.Ionescu, R.Lica, A.G.Magner, C.Mihai, R.Mihai, C.R.Nita, S.Pascu, K.P.Shevchenko, A.A.Shevchuk, A.Turturica, H.-F.Wirth

High-resolution study of excited states in 158Gd with the (p, t) reaction

NUCLEAR REACTIONS 160Gd(p, t), E=22 MeV; measured triton spectra, exclusive differential σ(θ), integrated σ using the Q3D spectrograph at the Tandem accelerator of the Maier-Leibnitz-Laboratory in Munich. Enriched target. DWBA analysis of σ(θ) data using coupled-channel approximation CHUCK3 code. 158Gd; deduced levels, J, π. Discussed bands, moment of inertia, B(E1), B(E2). Comparison with theoretical calculations using the spdf version of the interacting boson model (IBM). 154,155,156Gd; identified ground and first excited states from (p, t) reaction on other Gd isotopes.

doi: 10.1103/PhysRevC.102.014308
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2020MA37      Phys.Rev.Lett. 125, 102502 (2020)

N.Marginean, D.Little, Y.Tsunoda, S.Leoni, R.V.F.Janssens, B.Fornal, T.Otsuka, C.Michelagnoli, L.Stan, F.C.L.Crespi, C.Costache, R.Lica, M.Sferrazza, A.Turturica, A.D.Ayangeakaa, K.Auranen, M.Barani, P.C.Bender, S.Bottoni, M.Boromiza, A.Bracco, S.Calinescu, C.M.Campbell, M.P.Carpenter, P.Chowdhury, M.Ciemala, N.Cieplicka-Orynczak, D.Cline, C.Clisu, H.L.Crawford, I.E.Dinescu, J.Dudouet, D.Filipescu, N.Florea, A.M.Forney, S.Fracassetti, A.Gade, I.Gheorghe, A.B.Hayes, I.Harca, J.Henderson, A.Ionescu, L.W.Iskra, M.Jentschel, F.Kandzia, Y.H.Kim, F.G.Kondev, G.Korschinek, U.Koster, Krishichayan, M.Krzysiek, T.Lauritsen, J.Li, R.Marginean, E.A.Maugeri, C.Mihai, R.E.Mihai, A.Mitu, P.Mutti, A.Negret, C.R.Nita, A.Olacel, A.Oprea, S.Pascu, C.Petrone, C.Porzio, D.Rhodes, D.Seweryniak, D.Schumann, C.Sotty, S.M.Stolze, R.Suvaila, S.Toma, S.Ujeniuc, W.B.Walters, C.Y.Wu, J.Wu, S.Zhu, S.Ziliani

Shape Coexistence at Zero Spin in 64Ni Driven by the Monopole Tensor Interaction

NUCLEAR REACTIONS 62Ni(18O, 16O), E=39 MeV; 65Cu(11B, 12C), E=26 MeV; 63Ni(n, γ), E thermal; measured reaction products, Eγ, Iγ; analyzed available data from multiple experiments. 64Ni; deduced γ-ray energies, J, π, B(E2). Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.125.102502
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2020PO12      Phys.Rev. C 102, 064310 (2020)

C.Porzio, C.Michelagnoli, N.Cieplicka-Orynczak, M.Sferrazza, S.Leoni, B.Fornal, Y.Tsunoda, T.Otsuka, S.Bottoni, C.Costache, F.C.L.Crespi, L.W.Iskra, M.Jentschel, F.Kandzia, Y.-H.Kim, U.Koster, N.Marginean, C.Mihai, P.Mutti, A.Turturica

Detailed low-spin spectroscopy of 65Ni via neutron capture reaction

NUCLEAR REACTIONS 64Ni(n, γ), E=thermal; measured Eγ, Iγ, γγ-coin, γγ(θ) using FIPPS array of eight HPGe clovers at ILL, Grenoble. 65Ni; deduced levels, J, π, multipolarities, mixing ratios; calculated potential-energy surfaces of 65Ni in (Q0, Q2) plane for different excited states. Comparison with Monte Carlo shell-model (MCSM) calculations, predicting spherical shapes for most states, with the exception of first 9/2+ and second 1/2- states of oblate deformation.

doi: 10.1103/PhysRevC.102.064310
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2019BU14      Phys.Rev. C 100, 014327 (2019)

D.Bucurescu, S.Pascu, T.Faestermann, H-F.Wirth, C.Costache, A.Ionescu, R.Lica, R.Mihai, A.Turturica, R.Hertenberger

Excited states of the odd-odd nucleus 158Eu from the (d, α) reaction

NUCLEAR REACTIONS 160Gd(d, α)158Eu, E=18.0 MeV; measured Eα, Iα, differential σ(θ) using multiwire proportional chamber of Q3D spectrograph at MLL-Garching tandem accelerator. 111Cd(d, α)109Ag, E=18.0 MeV; measured Eα, Iα, used for calibration of 158Eu spectrum. 158Eu; deduced levels, and compared with previously known levels from 158Sm β- decay. Systematics of low-lying level densities of 150,152,154,156,158Eu.

doi: 10.1103/PhysRevC.100.014327
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2019LE13      Phys.Rev. C 100, 034307 (2019)

A.I.Levon, D.Bucurescu, C.Costache, T.Faestermann, R.Hertenberger, A.Ionescu, R.Lica, A.G.Magner, C.Mihai, R.Mihai, C.R.Nita, S.Pascu, K.P.Shevchenko, A.A.Shevchuk, A.Turturica, H.-F.Wirth

New data on 0+ states in 158Gd

NUCLEAR REACTIONS 160Gd(p, t), E=22 MeV; measured E(t), I(t), σ(θ) using enriched target and high-precision Q3D spectrometer at the Munich Tandem accelerator facility. 158Gd; deduced 230 levels between 1700 and 4300 keV, J, π, 36 levels with Jπ=0+ below 3.4 MeV; analyzed σ(θ) by DWBA calculations using optical model parameters from CHUCK3. Comparison with calculations within the spdf-IBM model, and with previous experimental results.

doi: 10.1103/PhysRevC.100.034307
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2018IO02      Phys.Rev. C 98, 054305 (2018)

M.Ionescu-Bujor, S.Aydin, N.Marginean, C.Costache, D.Bucurescu, N.Florea, T.Glodariu, A.Ionescu, A.Iordachescu, R.Marginean, C.Mihai, R.E.Mihai, A.Mitu, A.Negret, C.R.Nita, A.Olacel, S.Pascu, B.Saygi, L.Stroe, R.Suvaila, S.Toma, A.Turturica

Lifetime measurements in the chiral-candidate doublet bands of 130La

NUCLEAR REACTIONS 121Sb(12C, 3n), E=54 MeV; measured Eγ, γ(θ), γγ-coin, level half-lives by Doppler-shift attenuation method and the in-beam fast γγ(t) timing technique using the ROSPHERE array for γ detection at the FN Tandem accelerator of IFIN-HH, Bucharest. 130La; deduced levels, J, π, chiral band doublet, B(E1), B(M1), B(E2), energy separation and staggering of yrast and sideband, configuration. Comparison with theoretical predictions from two-quasiparticles-plus triaxial rotor model (TQRM).

doi: 10.1103/PhysRevC.98.054305
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2018PI07      Acta Phys.Pol. B49, 523 (2018)

M.Piersa, A.Korgul, L.M.Fraile, J.Benito, E.Adamska, R.Alvarez, A.E.Barzakh, G.Benzoni, T.Berry, M.J.G.Borge, M.Carmona, K.Chrysalidis, G.Correia, C.Costache, T.Day Goodacre, D.V.Fedorov, V.N.Fedosseev, G.Fernandez-Martinez, M.Fila, D.Galaviz, R.Grzywacz, C.Henrich, A.Illana, Z.Janas, K.Johnston, V.Karanyonchev, M.Kicinska-Habior, R.Lica, M.Madurga, I.Marroquin, B.Marsh, C.Martinez, C.Mazzocchi, K.Miernik, R.Mihai, B.Olaizola, S.Paulaskalas, J.-M.Regis, S.Rothe, V.Sanchez-Tembleque, G.Simpson, Ch.Sotty, L.Stan, M.Stanoiu, M.Stryjczyk, A.Turturica, J.M.Udias, V.Vedia, A.Villa, W.B.Walters

Investigation of Low-lying States in 133Sn Populated in the β Decay of 133In Using Isomer-selective Laser Ionization

RADIOACTIVITY 133In(β-)[from ISOLDE facility, where 1.4 GeV protons are directed on uranium carbide target]; measured Eβ, Iβ, β-gated γ-ray spectra using isomer selective ionization of ISOLDE facility LDE RILIS with clear distinction between decaying gs (9/2+) and isomer (1/2-); deduced, identified γ-rays following 133In to 133Sn as βγγ coin with 513 keV transition; deduced levels, J, π participating in 133In β-decay; deduced consistency with previous results on low-lying structure in 133Sn.

doi: 10.5506/aphyspolb.49.523
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2018SI23      Phys.Rev. C 98, 034606 (2018)

E.Simeckova, M.Avrigeanu, U.Fischer, J.Mrazek, J.Novak, M.Stefanik, C.Costache, V.Avrigeanu

Consistent account of deuteron-induced reactions on natCr up to 60 MeV

NUCLEAR REACTIONS Cr(d, xn)54Mn/52Mn/52mMn/51Mn, E=4-20 MeV; Cr(d, X)51Cr/48V, E=4-20 MeV; measured Eγ, Iγ from radioactive reaction product, σ(E) by activation method using the variable-energy cyclotron U-120M at CANAM-NPI-CAS at Rez, Czech Republic. 50,52,53,54Cr(d, d), (d, xn), (d, X), E=3-60 MeV; 50Cr(d, p)51Cr, E=12 MeV; 52Cr(d, p)53Cr, E=7.5 MeV; 52Cr(d, α)50V, E=17 MeV; 53Cr(d, t)52Cr, E=11.8 MeV; 54Cr(d, p)55Cr, E=10 MeV; 54Cr(d, t)53Cr, E=11.8, 12 MeV; analyzed data from literature for elastic scattering differential σ(θ, E), and total reaction σ(θ, E) for direct reaction (DR), and break-up (BU) reaction channels. Comparison with theoretical predictions, and TENDL-2017 evaluations.

doi: 10.1103/PhysRevC.98.034606
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2017DA06      Phys.Rev. C 95, 024328 (2017)

T.Daniel, S.Kisyov, P.H.Regan, N.Marginean, Zs.Podolyak, R.Marginean, K.Nomura, M.Rudigier, R.Mihai, V.Werner, R.J.Carroll, L.A.Gurgi, A.Oprea, T.Berry, A.Serban, C.R.Nita, C.Sotty, R.Suvaila, A.Turturica, C.Costache, L.Stan, A.Olacel, M.Boromiza, S.Toma

γ-ray spectroscopy of low-lying excited states and shape competition in 194Os

NUCLEAR REACTIONS 192Os(18O, 16O), E=80 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), half-life of the first 2+ and 4+ states by γγ(t) using RoSPHERE array at IFIN-HH, Bucharest facility. 194Os; deduced levels, J, π, bands, multipolarities, B(E2), effective β2. 192Os; measured half-life of the first 2+ state by γγ(t). Comparison with Hartree-Fock-Bogoliubov interacting-boson-model (IBM) calculations. Systematics of energies of ground-state band members in 176,178,180,182,184,186,188,190,192,194,196,198Os. Systematics of B(E2) and β2 for first 2+ states in 174,176,178,180,182,184,186,188W, 178,180,182,184,186,188,190,192,194Os, 180,184,186,188,190,192,194,196,198Pt.

doi: 10.1103/PhysRevC.95.024328
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2017GO14      Phys.Lett. B 772, 359 (2017)

A.Gottardo, D.Verney, I.Deloncle, S.Peru, C.Delafosse, S.Roccia, I.Matea, C.Sotty, C.Andreoiu, C.Costache, M.-C.Delattre, A.Etile, S.Franchoo, C.Gaulard, J.Guillot, F.Ibrahim, M.Lebois, M.MacCormick, N.Marginean, R.Marginean, M.Martini, C.Mihai, I.Mitu, L.Olivier, C.Portail, L.Qi, B.Roussiere, L.Stan, D.Testov, J.Wilson, D.T.Yordanov

Unexpected high-energy γ emission from decaying exotic nuclei

RADIOACTIVITY 80,83Ga(β-); measured decay products, Eγ, Iγ; deduced γ-ray emissions, B(E1), GT β-decay and E1 strength distributions. Comparison with microscopic Gogny-QRPA calculations.

doi: 10.1016/j.physletb.2017.06.050
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2017LE06      Phys.Rev.Lett. 118, 162502 (2017)

S.Leoni, B.Fornal, N.Marginean, M.Sferrazza, Y.Tsunoda, T.Otsuka, G.Bocchi, F.C.L.Crespi, A.Bracco, S.Aydin, M.Boromiza, D.Bucurescu, N.Cieplicka-Orynczak, C.Costache, S.Calinescu, N.Florea, D.G.Ghita, T.Glodariu, A.Ionescu, L.W.Iskra, M.Krzysiek, R.Marginean, C.Mihai, R.E.Mihai, A.Mitu, A.Negret, C.R.Nita, A.Olacel, A.Oprea, S.Pascu, P.Petkov, C.Petrone, G.Porzio, A.Serban, C.Sotty, L.Stan, I.Stiru, L.Stroe, R.Suvaila, S.Toma, A.Turturica, S.Ujeniuc, C.A.Ur

Multifaceted Quadruplet of Low-Lying Spin-Zero States in 66Ni: Emergence of Shape Isomerism in Light Nuclei

NUCLEAR REACTIONS 64Ni(18O, X)66Ni, E=39 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced lifetimes, B(E2), J, π. Plunger technique, comparison with the state-of-the-art Monte Carlo shell model calculations.

doi: 10.1103/PhysRevLett.118.162502
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2017LI06      J.Phys.(London) G44, 054002 (2017)

R.Lica, G.Benzoni, A.I.Morales, M.J.G.Borge, L.M.Fraile, H.Mach, M.Madurga, C.Sotty, V.Vedia, H.De Witte, J.Benito, T.Berry, N.Blasi, A.Bracco, F.Camera, S.Ceruti, V.Charviakova, N.Cieplicka-Orynczak, C.Costache, F.C.L.Crespi, J.Creswell, G.Fernandez-Martinez, H.Fynbo, P.Greenlees, I.Homm, M.Huyse, J.Jolie, V.Karayonchev, U.Koster, J.Konki, T.Kroll, J.Kurcewicz, T.Kurtukian-Nieto, I.Lazarus, S.Leoni, M.Lund, N.Marginean, R.Marginean, C.Mihai, R.Mihai, A.Negret, A.Orduz, Z.Patyk, S.Pascu, V.Pucknell, P.Rahkila, J.M.Regis, F.Rotaru, N.Saed-Samii, V.Sanchez-Tembleque, M.Stanoiu, O.Tengblad, M.Thuerauf, A.Turturica, P.Van Duppen, N.Warr

β decay studies of n-rich Cs isotopes with the ISOLDE Decay Station

RADIOACTIVITY 148,149,150Cs(β-), (β-n)[from U(p, X), E=1.4 GeV at ISOLDE-CERN]; measured reaction products, Eγ, Iγ, βγ-, γγ-coin, half-lives of ground states of 148,149,150Cs, %Pn for the decay of 149Cs, half-lives of levels in 149Ba and 148Ce by βγγ(t). 149Ba; deduced levels, β feedings, multipolarities, half-lives. 148Ce; deduced half-life of the first 2+ state. Comparison with previous experimental half-lives, and with theoretical calculations.

doi: 10.1088/1361-6471/aa6015
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2016AV03      Phys.Rev. C 94, 014606 (2016)

M.Avrigeanu, E.Simeckova, U.Fischer, J.Mrazek, J.Novak, M.Stefanik, C.Costache, V.Avrigeanu

Deuteron-induced reactions on Ni isotopes up to 60 MeV

NUCLEAR REACTIONS Ni(d, X)55Co/56Co/57Co/58Co/58mCo/60Co/57Ni/65Ni/60Cu/61Cu/64Cu, E=1.5-19.59 MeV; measured Eγ, Iγ, σ(E) using stacked-foil technique and γ-activation method at U-120M cyclotron of CANAM, NPI CAS. Optical model analysis. Deuteron breakup and direct reactions. Comparison with previous experimental data. 58,64Ni(d, d), E=12-56 MeV; 60Ni(d, d), E=4.86-56 MeV; 61Ni(d, d), E=12.3 MeV; 62Ni(d, d), E=12, 22 MeV; 58Ni(d, p)59Ni, E=10 MeV; 58Ni(d, n)59Cu, E=7 MeV; 58Ni(d, t)57Ni, E=24 MeV; 58Ni(d, α)56Co, E=17 MeV; 58Ni(d, n)59Cu, E=10 MeV; 60Ni(d, p)61Ni, E=7.5 MeV; 61Ni(d, p)62Ni, E=12.3 MeV; 62Ni(d, p)63Ni, E=7.5 MeV; 64Ni(d, p)65Ni, E=7.5 MeV; analyzed σ(θ, E) data. 58,60,61,62,64Ni(d, X), 60Ni(d, n)61Cu, 60Ni(d, 2n)60Cu, 61Ni(d, 2n)61Cu, 61Ni(d, 3n)60Cu, Ni(d, X)61Cu, 62Ni(d, 3n)61Cu, Ni(d, X)60Cu, 60Ni(d, 4n)60Cu, 64Ni(d, 5n)61Cu, Ni(d, X)64Cu, 64Ni(d, 2n)64Cu, Ni(d, X)57Ni, 58Ni(d, t)57Ni, Ni, 58Ni(d, X)56Ni, Ni, 62,64Ni(d, X)61Co, 61Ni(d, 2p)61Co, Ni, 61,62Ni(d, X)60Co, 60Ni(d, 2p)60Co, Ni, 60,61,62,64Ni(d, X)58Co/58mCo, 58Ni(d, 2p)58Co/58mCo, Ni, 58,60,61Ni(d, X)57Co, Ni, 58,60Ni(d, X)56Co, Ni, 58,60Ni(d, X)55Co, Ni, 58,60,61Ni(d, X)56Mn, Ni, 58,60,61Ni(d, X)54Mn, Ni, 58,60,61Ni(d, X)51Cr, 58Ni(d, X)51Mn, Ni, 58,60,61Ni(d, X)52Mn, E=5-65 MeV; Ni(d, X)65Ni, 64Ni(d, p), E=2-30 MeV; analyzed activation σ(E) data by consideration of the pre-equilibrium (PE) and compound nucleus (CN) contributions corrected for decrease of the total-reaction cross section from the leakage of the initial deuteron flux due to the deuteron breakup (BU) and direct reaction (DR) processes. Comparison with TENDL-2015 evaluation, and model calculations.

doi: 10.1103/PhysRevC.94.014606
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2016BU23      Nucl.Instrum.Methods Phys.Res. A837, 1 (2016)

D.Bucurescu, I.Cata-Danil, G.Ciocan, C.Costache, D.Deleanu, R.Dima, D.Filipescu, N.Florea, D.G.Ghita, T.Glodariu, M.Ivascu, R.Lica, N.Marginean, R.Marginean, C.Mihai, A.Negret, C.R.Nita, A.Olacel, S.Pascu, T.Sava, L.Stroe, A.Serban, R.Suvaila, S.Toma, N.V.Zamfir, G.Cata-Danil, I.Gheorghe, I.O.Mitu, G.Suliman, C.A.Ur, T.Braunroth, A.Dewald, C.Fransen, A.M.Bruce, Zs.Podolyak, P.H.Regan, O.J.Roberts

The ROSPHERE γ-ray spectroscopy array

NUCLEAR REACTIONS 110Pd(13C, 4n), E=50 MeV; 82Se(13C, X)92Zr, E=42 Mev; 140Ce(13C, 3n), E=62 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, T1/2. Comparison with available data.

doi: 10.1016/j.nima.2016.08.052
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2016GO13      Phys.Rev.Lett. 116, 182501 (2016)

A.Gottardo, D.Verney, C.Delafosse, F.Ibrahim, B.Roussiere, C.Sotty, S.Roccia, C.Andreoiu, C.Costache, M.-C.Delattre, I.Deloncle, a.Etile, S.Franchoo, c.Gaulard, J.Guillot, M.Lebois, M.MacCormick, N.Marginean, R.Marginean, I.Matea, C.Mihai, I.Mitu, L.Olivier, C.Portail, L.Qi, L.Stan, D.Testov, J.Wilson, D.T.Yordanov

First Evidence of Shape Coexistence in the 78Ni Region: Intruder 0+2 State in 80Ge

RADIOACTIVITY 80Ga(β-) [from U(E, X), E=50 MeV]; measured decay products, Eβ, Iβ, Eγ, Iγ; deduced intruder state energy, T1/2. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.116.182501
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