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NSR database version of May 20, 2024.

Search: Author = R.Liotta

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2021MA81      Phys.Rev. C 104, L061304 (2021)

A.O.Macchiavelli, O.Civitarese, S.M.Lenzi, R.J.Liotta, D.R.Bes

"Piston" mechanism in a time-dependent two-level model

NUCLEAR STRUCTURE 19N; analyzed one-proton knockout reaction on 19N. populating unbound state in 18C, in the framework of a time-dependent two-level model. 18C; calculated wave functions of g.s. and the first two 2+ states; quantified validity of the so-called 'piston' mechanism (proposed by 2018Re06: Phys. Rev. Lett. 120, 152504) in terms of time scales involved in the process, reaction time, period of oscillation between the mixed states, and the lifetime of the excited unbound state in 18C.

doi: 10.1103/PhysRevC.104.L061304
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2021QI06      Phys.Lett. B 818, 136373 (2021)

C.Qi, R.J.Liotta, R.Wyss

Alpha decay measured in single-particle units as a manifestation of nuclear collectivity

doi: 10.1016/j.physletb.2021.136373
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2021ZH52      Phys.Lett. B 820, 136527 (2021)

W.Zhang, B.Cederwall, M.Doncel, O.Aktas, A.Ertoprak, R.Liotta, C.Qi, T.Grahn, B.S.Nara Singh, D.M.Cullen, D.Hodge, M.Giles, S.Stolze, H.Badran, T.Braunroth, T.Calverley, D.M.Cox, Y.D.Fang, P.T.Greenlees, J.Hilton, E.Ideguchi, R.Julin, S.Juutinen, M.Kumar Raju, H.Li, H.Liu, S.Matta, P.Subramaniam, V.Modamio, J.Pakarinen, P.Papadakis, J.Partanen, C.M.Petrache, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, M.J.Taylor, J.Uusitalo, J.J.Valiente-Dobon

Lifetime measurements of excited states in 169, 171, 173Os: Persistence of anomalous B(E2) ratios in transitional rare earth nuclei in the presence of a decoupled i13/2 valence neutron

NUCLEAR REACTIONS 92Mo(83Kr, X)169Os/171Os/173Os, E=383 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, level lifetimes, B(E2). Recoil-distance Doppler shift and recoil-isomer tagging techniques.

doi: 10.1016/j.physletb.2021.136527
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2020ER01      Eur.Phys.J. A 56, 65 (2020)

A.Ertoprak, B.Cederwall, C.Qi, O.Aktas, M.Doncel, B.Hadinia, R.Liotta, M.Sandzelius, C.Scholey, K.Andgren, T.Back, H.Badran, T.Braunroth, T.Calverley, D.M.Cox, D.M.Cullen, Y.D.Fang, E.Ganioglu, M.Giles, M.B.Gomez Hornillos, T.Grahn, P.T.Greenlees, J.Hilton, D.Hodge, E.Ideguchi, U.Jakobsson, A.Johnson, P.M.Jones, R.Julin, S.Juutinen, S.Ketelhut, A.Khaplanov, M.Kumar Raju, M.Leino, H.Li, H.Liu, S.Matta, V.Modamio, B.S.Nara Singh, M.Niikura, M.Nyman, I.Ozgur, R.D.Page, J.Pakarinen, P.Papadakis, J.Partanen, E.S.Paul, C.M.Petrache, P.Peura, P.Rahkila, P.Ruotsalainen, J.Saren, J.Sorri, S.Stolze, P.Subramaniam, M.J.Taylor, J.Uusitalo, J.J.Valiente-Dobon, R.Wyss

Evidence for octupole collectivity in 172Pt

NUCLEAR REACTIONS 96Ru(78Kr, 2pγ)172Pt, E=342, 348 MeV; 92Mo(83Kr, 3nγ)172Pt, E=383 MeV; Measured Eγ, Iγ, γγ-coin, γ(θ), γγ(linear polarization), recoils using RITU gas-filled separator, JUROGAM I and JUROGAM II arrays of HPGe detectors, and the GREAT spectrometer consisting of silicon strip detectors, multiwire proportional counter (MWPC), array of Si PIN-diode detectors, one planar and one clover HPGe detector at the K-130 cyclotron facility of the University of Jyvaskyla. 172Pt; deduced high-spin levels, Jπ, multipolarities, bands, configurations, evidence for octupole collectivity. Comparison with large-scale shell model (LSSM) and total Routhian surface (TRS) calculations.

doi: 10.1140/epja/s10050-020-00071-6
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2019AS08      Eur.Phys.J. A 55, 245 (2019)

M.Assie, C.H.Dasso, R.J.Liotta, A.O.Macchiavelli, A.Vitturi

The Giant Pairing Vibration in heavy nuclei

doi: 10.1140/epja/i2019-12829-8
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2018CE02      Phys.Rev.Lett. 121, 022502 (2018)

B.Cederwall, M.Doncel, O.Aktas, A.Ertoprak, R.Liotta, C.Qi, T.Grahn, D.M.Cullen, D.Hodge, M.Giles, S.Stolze, H.Badran, T.Braunroth, T.Calverley, D.M.Cox, Y.D.Fang, P.T.Greenlees, J.Hilton, E.Ideguchi, R.Julin, S.Juutinen, M.Kumar Raju, H.Li, H.Liu, S.Matta, V.Modamio, J.Pakarinen, P.Papadakis, J.Partanen, C.M.Petrache, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, P.Subramaniam, M.J.Taylor, J.Uusitalo, J.J.Valiente-Dobon

Lifetime Measurements of Excited States in 172Pt and the Variation of Quadrupole Transition Strength with Angular Momentum

NUCLEAR REACTIONS 92Mo(83Kr, 3n)172Pt, E=383 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, 2+ and 4+ lifetimes, B(E2). Comparison with systematics, Alaga rule.

doi: 10.1103/physrevlett.121.022502
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2017BH09      Phys.Rev. C 96, 031302 (2017)

A.Bhagwat, R.J.Liotta

Cluster decay in the superallowed α decay region

RADIOACTIVITY 108,110,112,114Te, 110,112,114,116,118Xe, 114,116,118,120Ba(α); 110,112,114Xe, 114,116,118,120Ba(12C); 114,116,118Ba(16O); calculated half-lives, cluster formation probabilities in the superallowed α-decay region using theory which includes a microscopic treatment of the cluster center-of-mass motion.

doi: 10.1103/PhysRevC.96.031302
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2016DE19      J.Phys.(London) G43, 095109 (2016)

D.S.Delion, M.Patial, R.J.Liotta, R.Wyss

A simple approach to α-decay fine structure

NUCLEAR STRUCTURE N=80-170; calculated hindrance and spectroscopic factors, partial α-decay widths. Standard spherical semiclassical approach where the action integrals have close analytical forms.

doi: 10.1088/0954-3899/43/9/095109
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2016PA20      Phys.Rev. C 93, 054326 (2016)

M.Patial, R.J.Liotta, R.Wyss

Microscopic description of superallowed α-decay transitions

RADIOACTIVITY 104Te, 212Po(α); calculated half-lives, α-formation probabilities. Comparison with available experimental data. Full microscopic calculation within the framework of the multistep shell model.

NUCLEAR STRUCTURE 102,104Te, 102Sn, 212Po; calculated levels, J, π. Assigned Jπ=16+ for 2922-keV level in 212Po. Comparison with available experimental data. Full microscopic calculation within the framework of the multistep shell model.

doi: 10.1103/PhysRevC.93.054326
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2015BH14      Phys.Rev. C 92, 044312 (2015)

A.Bhagwat, R.J.Liotta

Consistent description of the cluster-decay phenomenon in transactinide nuclei

RADIOACTIVITY 222,224,226Ra(14C); 228Th(20O); 230U(22Ne); 230,232Th, 232,234,236U(24Ne); 232Th, 234,236U(26Ne); 232,234,236U, 236,238Pu(28Mg); 236U, 238Pu(30Mg); 238Pu(32Si); 240Pu, 242Cm(34Si); 222,224,226Ra, 228,230,232Th, 230,232,234,236U, 236,238,240Pu, 242Cm(α); calculated half-lives for cluster and α decays. Woods-Saxon mean field calculations. Comparison with experimental values.

doi: 10.1103/PhysRevC.92.044312
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2015DE35      Phys.Rev. C 92, 051301 (2015)

D.S.Delion, R.J.Liotta, R.Wyss

Exact estimate of the α-decay rate and semiclassical approach in deformed nuclei

RADIOACTIVITY 230U, 236Pu, 244Cm(α); calculated fragmentation potential, partial decay widths and total half-life in the laboratory system and from "angular momentum WKB" approach. New semiclassical "angular momentum WKB" procedure to evaluate the total α-decay widths in deformed nuclei.

doi: 10.1103/PhysRevC.92.051301
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2014DE48      Phys.Rev. C 90, 061303 (2014)

D.S.Delion, R.J.Liotta, C.Qi, R.Wyss

Probing shape coexistence by α decays to 0+ states

RADIOACTIVITY 180,182,184Hg, 202Rn(α); analyzed fine structure of α decays to first excited 0+ states, hindrance factors, spectroscopic factors. Shape coexistence. Two-level model using microscopic description of the α-particle formation amplitude.

doi: 10.1103/PhysRevC.90.061303
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2014GH01      Phys.Rev. C 89, 014301 (2014)

F.Ghazi Moradi, C.Qi, B.Cederwall, A.Atac, T.Back, R.Liotta, M.Doncel, A.Johnson, G.de France, E.Clement, A.Dijon, R.Wadsworth, T.W.Henry, A.J.Nichols, H.Al-Azri, J.Nyberg, A.Gengelbach, T.Huyuk, B.M.Nyako, J.Timar, D.Sohler, Zs.Dombradi, I.Kuti, K.Juhasz, M.Palacz, G.Jaworski, S.M.Lenzi, P.R.John, D.R.Napoli, A.Gottardo, V.Modamio, A.Di Nitto, B.Yilmaz, O.Aktas, E.Ideguchi

Character of particle-hole excitations in γ-ray angular correlation and linear polarization measurements

NUCLEAR REACTIONS 58Ni(40Ca, 4p)94Ru, E=125 MeV; measured Eγ, Iγ, γγ-, γγ(particle)-coin, γγ(θ)(DCO), γγ(linear polarization) using EXOGAM array for γ rays and DIAMANT array for particles at GANIL facility. 94Ru; deduced high-spin levels, J, π, multipolarity, configurations, hindrance factors for E1 transitions. Comparison with large-scale shell-model (LSSM) calculations.

doi: 10.1103/PhysRevC.89.014301
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2014GH02      Phys.Rev. C 89, 044310 (2014)

F.Ghazi Moradi, B.Cederwall, C.Qi, T.Back, A.Atac, R.Liotta, M.Doncel, A.Johnson, G.de France, E.Clement, J.Nyberg, A.Gengelbach, B.M.Nyako, J.Gal, G.Kalinka, J.Molnar, J.Timar, D.Sohler, Zs.Dombradi, I.Kuti, K.Juhasz, D.R.Napoli, A.Gottardo, V.Modamio, R.Wadsworth, T.W.Henry, A.J.Nichols, H.Al-Azri, M.Palacz, E.Ideguchi, O.Aktas, A.Di Nitto, A.Dijon, T.Huyuk, G.Jaworski, P.R.John, B.Yilmaz

Spectroscopy of the neutron-deficient N = 50 nucleus 95Rh

NUCLEAR REACTIONS 58Ni(40Ca, 3p), E=125 MeV; measured Eγ, Iγ, γγ-, nγ-, (particle)γ-coin, γγ(θ)(DCO), γ(linear polarization) using EXOGAM Ge detector array, Neutron Wall and DIAMANT CsI(Tl) detector arrays at GANIL facility. 95Rh; deduced high-spin levels, J, π, multipolarity, configurations, E1 transition strengths and hindrance factors. Comparison with large-scale shell model (LSSM) calculations in fpg and fpgd model spaces.

doi: 10.1103/PhysRevC.89.044310
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2014JI01      Phys.Rev. C 89, 014320 (2014)

H.Jiang, Y.Lei, C.Qi, R.Liotta, R.Wyss, Y.M.Zhao

Magnetic moments of low-lying states in tin isotopes within the nucleon-pair approximation

NUCLEAR STRUCTURE 102,104,106,108,110,112,114,116,118,120,122,124,126,128,130Sn; calculated energies, magnetic moments, and B(E2) of first 2+ states. 101,103,105,107,109,123,125,127,129,131Sn; calculated low-lying yrast levels, J, π, magnetic moment. Spin and orbital angular momentum contributions to magnetic moment. Nucleon-pair approximation (NPA) of shell model using standard multipole-multipole interaction. Comparisons with experimental data.

doi: 10.1103/PhysRevC.89.014320
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2013AN13      Phys.Rev.Lett. 110, 242502 (2013)

A.N.Andreyev, M.Huyse, P.Van Duppen, C.Qi, R.J.Liotta, S.Antalic, D.Ackermann, S.Franchoo, F.P.Hessberger, S.Hofmann, I.Kojouharov, B.Kindler, P.Kuusiniemi, S.R.Lesher, B.Lommel, R.Mann, K.Nishio, R.D.Page, B.Streicher, S.Saro, B.Sulignano, D.Wiseman, R.A.Wyss

Signatures of the Z = 82 Shell Closure in α-Decay Process

RADIOACTIVITY 186Po, 182Pb, 178Hg, 174Pt(α) [from 144Sm(46Ti, X)190Po, E=230 MeV, 190Po(4n)]; measured decay products, Eα, Iα; deduced σ, identification of 186Po, the α-particle formation probabilities.

doi: 10.1103/PhysRevLett.110.242502
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2013BA09      Phys.Rev. C 87, 031306 (2013)

T.Back, C.Qi, B.Cederwall, R.Liotta, F.Ghazi Moradi, A.Johnson, R.Wyss, R.Wadsworth

Transition probabilities near 100Sn and the stability of the N, Z=50 shell closure

NUCLEAR STRUCTURE 102,104,106,108,110,112,114,116,118,120,122,124,126,128,130Sn; calculated B(E2) for first 2+ states. Large-scale shell-model based on monopole-corrected CD-Bonn potential, with inclusion of neutron core excitations. Comparison with experimental data.

doi: 10.1103/PhysRevC.87.031306
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2013DE08      Phys.Rev. C 87, 034328 (2013)

D.S.Delion, R.J.Liotta, R.Wyss

Simple approach to two-proton emission

RADIOACTIVITY 45Fe, 48Ni(2p); calculated two-proton radial wave function, proton pairing gap, two-proton decay width, T1/2. Scattering theory with a realistic proton-proton interaction, BCS equations.

doi: 10.1103/PhysRevC.87.034328
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2013DE11      Phys.Rev. C 87, 041302 (2013)

D.S.Delion, R.J.Liotta

Shell-model representation to describe α emission

RADIOACTIVITY Z<82, N=82-126(α); Z>82, N=82-126(α); Z>82, N>126(α); calculated proton clustering strength, reduced α widths, Qα-Coulomb barrier for even-even nuclei. 220Rn(α); calculated proton and neutron pairing formation probabilities, decay width and compared with experimental data. Woods-Saxon mean field plus spin-orbit potential of shell model, with an additional attractive Gaussian pocket potential.

doi: 10.1103/PhysRevC.87.041302
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2013JI16      Phys.Rev. C 88, 044332 (2013)

H.Jiang, C.Qi, Y.Lei, R.Liotta, R.Wyss, Y.M.Zhao

Nucleon pair approximation description of the low-lying structure of 108, 109Te and 109I

NUCLEAR STRUCTURE 104,106,108,109Te, 109I; calculated low-lying levels, J, π, ground-state bands of even-even nuclei, ground- and excited bands of odd-A nuclei, B(E2), B(M1), magnetic dipole moments, nucleon-pair wave functions using framework of nucleon pair approximation (NAP) of the nuclear shell model. Weak coupling and residual quadrupole-quadrupole interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.044332
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2013PR01      Phys.Rev. C 87, 014308 (2013)

M.G.Procter, D.M.Cullen, M.J.Taylor, J.Pakarinen, K.Auranen, T.Back, T.Braunroth, B.Cederwall, A.Dewald, T.Grahn, P.T.Greenlees, U.Jakobsson, R.Julin, S.Juutinen, A.Herzan, J.Konki, M.Leino, R.Liotta, J.Partanen, P.Peura, P.Rahkila, P.Ruotsalainen, M.Sandelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, J.Uusitalo, C.Qi

Isomer-tagged differential-plunger measurements in 54 113Xe

NUCLEAR REACTIONS 58Ni(58Ni, n2p), E=210 MeV; measured Eγ, Iγ, delayed and prompt γ spectra, γγ-coin, level half-lives by γ(t) and recoil distance Doppler-shift method using a plunger device DPUNS and JUROGAM-II array. Recoil-isomer tagging method. 113Xe; deduced high-spin levels, J, π, isomer, bands, B(M2), B(E2), branching ratio. B(M2), B(E2) and level systematics of Sn, Te, Xe isotopes.

doi: 10.1103/PhysRevC.87.014308
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2013TA35      Phys.Rev. C 88, 054307 (2013)

M.J.Taylor, D.M.Cullen, M.G.Procter, T.Back, B.Cederwall, M.Doncel, T.Braunroth, A.Dewald, J.Pakarinen, T.Grahn, P.T.Greenlees, K.Auranen, U.Jakobsson, R.Julin, S.Juutinen, A.Herzan, J.Konki, M.Leino, R.Liotta, J.Partanen, P.Peura, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, J.Sorri, S.Stolze, J.Uusitalo, W.Y.Liang, F.R.Xu

Competing single-particle and collective states in the low-energy structure of 113I

NUCLEAR REACTIONS 58Ni(58Ni, 3p)113I, E=210 MeV; measured Eγ, Iγ, γγ-coin, level half-lives by RDDS method using a plunger device, Jurogam-II array, and RITU separator at JYFL facility. 113I; deduced high-spin levels, J, π, bands, B(E2). Comparison with shell-model calculations, and configuration-constrained total Routhian surface calculations.

doi: 10.1103/PhysRevC.88.054307
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2012BA47      Phys.Scr. T150, 014003 (2012)

T.Back, C.Qi, B.Cederwall, R.Liotta, F.Ghazi Moradi, A.Johnson, R.Wyss, R.Wadsworth

The B(E2;0+gs → 2+) systematics of Sn and Te isotopes in light of data in the light Sn region including a recent measurement in 108Te using the combined recoil-decay-tagging-recoil-distance Doppler technique

COMPILATION 108,112,114,116,118,120,122,124,126,128,130Te, 106,108,110,112,114,116,118,120,122,124,126,128,130Sn; compiled B(E2) data; deduced systematics.

doi: 10.1088/0031-8949/2012/T150/014003
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2012DE10      Phys.Rev. C 85, 064306 (2012)

D.S.Delion, R.J.Liotta, P.Schuck, A.Astier, M.-G.Porquet

Shell model plus cluster description of negative parity states in 212Po

NUCLEAR STRUCTURE 212Po; calculated negative-parity levels, J, π, B(E1), B(E2), octupole TDA amplitudes, α-decay widths. 208,210Pb, 210Po; calculated interaction energies, B(E2). Shell-model with α cluster approach. Comparison with experimental data.

doi: 10.1103/PhysRevC.85.064306
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2012PR10      Phys.Rev. C 86, 034308 (2012)

M.G.Procter, D.M.Cullen, C.Scholey, P.Ruotsalainen, L.Angus, T.Back, B.Cederwall, A.Dewald, C.Fransen, T.Grahn, P.T.Greenlees, M.Hackstein, U.Jakobsson, P.M.Jones, R.Julin, S.Juutinen, S.Ketelhut, M.Leino, R.Liotta, N.M.Lumley, P.J.R.Mason, P.Nieminen, M.Nyman, J.Pakarinen, T.Pissulla, P.Peura, P.Rahkila, J.Revill, S.V.Rigby, W.Rother, M.Sandzelius, J.Saren, J.Sorri, M.J.Taylor, J.Uusitalo, P.Wady, C.Qi, F.R.Xu

Electromagnetic transition strengths in 52109Te

NUCLEAR REACTIONS 58Ni(54Fe, n2p), E=206 MeV; measured Eγ, Iγ, γγ-, (particle)γ-, (recoil)γ-coin, level half-lives using the recoil distance Doppler-shift method using PRE-JUROGAM II spectrometer, RITU and GREAT focal-plane spectrometer at Jyvaskyla. Recoil-decay tagging method. 109Te; deduced levels, J, π, bands, multipolarity, B(E2), B(M1). Comparison of experimental B(E2) for ground-state transitions in 108,109Te, 109I with theory. Systematics of 11/2- states in N=57-81 Te isotopes, first 2+ states in N=54-82 Te, h11/2 bands in N=57-63 Te, and ground-state bands in N=54-64 even A Te nuclei. Comparison of levels, J, π, B(E2), B(M1) values with shell model calculations.

NUCLEAR REACTIONS 58Ni(54Fe, X)105In/106Sn/108Sn/108Sb/109Sb/109Te/110Te, E=206 MeV; measured yields from ground-state transitions in (recoil)γγ-coin spectra.

doi: 10.1103/PhysRevC.86.034308
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2012QI03      Phys.Rev. C 85, 011303 (2012)

C.Qi, D.S.Delion, R.J.Liotta, R.Wyss

Effects of formation properties in one-proton radioactivity

RADIOACTIVITY 109I, 112,113Cs, 117La, 121Pr, 130,131Eu, 135Tb, 140,141,141mHo, 144,145,146,146m,147,147mTm, 150,150m,151,151mLu, 155,156,156m,157Ta, 159m,160,161,161mRe, 164,165m,166,166m,167,167mIr, 170,170m,171,171mAu, 176,177,177mTl, 185Bi(p); calculated T1/2, proton formation probabilities. Fitting parameter from microscopic description of the decay process. Deformation property of the parent nucleus. Comparison with experimental data.

doi: 10.1103/PhysRevC.85.011303
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2012QI09      Nucl.Phys. A884-885, 21 (2012)

C.Qi, Z.X.Xu, R.J.Liotta

Analytic proof of partial conservation of seniority in j=9/2 shells

doi: 10.1016/j.nuclphysa.2012.04.007
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2012QI12      Phys.Scr. T150, 014031 (2012)

C.Qi, J.Blomqvist, T.Back, B.Cederwall, A.Johnson, R.J.Liotta, R.Wyss

Coherence features of the spin-aligned neutron-proton pair coupling scheme

NUCLEAR STRUCTURE 92Pd, 96Cd; calculated wave functions, ground and low-lying yrast states. The seniority scheme.

doi: 10.1088/0031-8949/2012/T150/014031
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2012QI18      J.Phys.:Conf.Ser. 381, 012106 (2012)

C.Qi, R.J.Liotta, R.Wyss

Spin-aligned neutron-proton pair coupling in the era of large scale computing

NUCLEAR STRUCTURE 92Pd, 96Cd; calculated 0g9/2 interaction matrix, average number of isoscalar interacting pairs vs total angular momentum of low-lying yrast states using shell model.

doi: 10.1088/1742-6596/381/1/012106
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2012QI19      J.Phys.:Conf.Ser. 381, 012131 (2012)

C.Qi, R.J.Liotta, R.Wyss

Generalization of the Geiger-Nuttall law and alpha clustering in heavy nuclei

COMPILATION Z=78-118(α); compiled even-even nuclei T1/2 vs Qα and T1/2 vs combination of charge, mass and Q. Suggested Geiger-Nuttall-like law using the newly introduced variables.

doi: 10.1088/1742-6596/381/1/012131
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2012XU01      Nucl.Phys. A877, 51 (2012)

Z.X.Xu, C.Qi, J.Blomqvist, R.J.Liotta, R.Wyss

Multistep shell model description of spin-aligned neutron-proton pair coupling

NUCLEAR STRUCTURE 94Ag; calculated levels, J, π, configuration of states, δ using spin-aligned neutron-proton par scheme within multistep shell model using 0g9/2 shell.

doi: 10.1016/j.nuclphysa.2011.12.005
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2011BA37      Phys.Rev. C 84, 041306 (2011)

T.Back, C.Qi, F.Ghazi Moradi, B.Cederwall, A.Johnson, R.Liotta, R.Wyss, H.Al-Azri, D.Bloor, T.Brock, R.Wadsworth, T.Grahn, P.T.Greenlees, K.Hauschild, A.Herzan, U.Jacobsson, P.M.Jones, R.Julin, S.Juutinen, S.Ketelhut, M.Leino, A.Lopez-Martens, P.Nieminen, P.Peura, P.Rahkila, S.Rinta-Antila, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, J.Uusitalo, S.Go, E.Ideguchi, D.M.Cullen, M.G.Procter, T.Braunroth, A.Dewald, C.Fransen, M.Hackstein, J.Litzinger, W.Rother

Lifetime measurement of the first excited 2+ state in 108Te

NUCLEAR REACTIONS 54Fe(58Ni, 2n2p), E=245 MeV; measured Eγ, Iγ, recoil-distance Doppler shift. 108Te; deduced levels, J, π, half-life of first 2+ state, B(E2). Recoil decay tagging (RDT) technique in combination with distance Doppler shift using the Cologne differential plunger and JUROGAM II array. Systematics of B(E2) values for even-A Te nuclei from N=52-80. Comparison with shell model calculations.

doi: 10.1103/PhysRevC.84.041306
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2011CE01      Nature(London) 469, 68 (2011)

B.Cederwall, F.Ghazi Moradi, T.Back, A.Johnson, J.Blomqvist, E.Clement, G.de France, R.Wadsworth, K.Andgren, K.Lagergren, A.Dijon, G.Jaworski, R.Liotta, C.Qi, B.M.Nyako, J.Nyberg, M.Palacz, H.Al-Azri, A.Algora, G.de Angelis, A.Atac, S.Bhattacharyya, T.Brock, J.R.Brown, P.Davies, A.Di Nitto, Zs.Dombradi, A.Gadea, J.Gal, B.Hadinia, F.Johnston-Theasby, P.Joshi, K.Juhasz, R.Julin, A.Jungclaus, G.Kalinka, S.O.Kara, A.Khaplanov, J.Kownacki, G.La Rana, S.M.Lenzi, J.Molnar, R.Moro, D.R.Napoli, B.S.Nara Singh, A.Persson, F.Recchia, M.Sandzelius, J.-N.Scheurer, G.Sletten, D.Sohler, P.-A.Soderstrom, M.J.Taylor, J.Timar, J.J.Valiente-Dobon, E.Vardaci, S.Williams

Evidence for a spin-aligned neutron-proton paired phase from the level structure of 92Pd

NUCLEAR REACTIONS 58Ni(36Ar, 2n), (36Ar, 2np), (36Ar, n2p), E=111 MeV; measured Eα, Iα, Ep, Ip, Eγ, Iγ, particle-γ coin. 92Pd; deduced level energies, J, π, spin-aligned, isoscalar neutron-proton coupling scheme. Comparison with shell-model calculations.

NUCLEAR STRUCTURE 92,94,96Pd; calculated ground-state wavefunctions, level energies, J, π, B(E2). Nuclear shell model.

doi: 10.1038/nature09644 Letter
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2011GH08      Phys.Rev. C 84, 064312 (2011)

F.Ghazi Moradi, T.Back, B.Cederwall, M.Sandzelius, A.Atac, A.Johnson, C.Qi, R.Liotta, B.Hadinia, K.Andgren, A.Khaplanov, R.Wyss, S.Eeckhaudt, T.Grahn, P.T.Greenlees, P.M.Jones, R.Julin, S.Juutinen, S.Ketelhut, M.Leino, M.Nyman, P.Rahkila, J.Saren, C.Scholey, J.Sorri, J.Uusitalo, E.Ganioglu, J.Thomson, D.T.Joss, R.D.Page, S.Erturk, J.Simpson, M.B.Gomez Hornillos, L.Bianco

High-spin study of 162Ta

NUCLEAR REACTIONS 106Cd(60Ni, n3p), E=270 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO). 162Ta; deduced levels, J, π, experimental Routhians, rotational bands, energy staggering, configurations, B(M1)/B(E2) ratios. JUROGAM array and Gamma Recoil Electron Alpha Tagging (GREAT) spectrometer. Total Routhian surface calculations. Systematics of energy staggering of signature partners for bands in 158,160,162Tm, 160,162,164Lu, 162,164,166Ta.

doi: 10.1103/PhysRevC.84.064312
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2011PR12      Phys.Lett. B 704, 118 (2011)

M.G.Procter, D.M.Cullen, C.Scholey, P.Ruotsalainen, L.Angus, T.Back, B.Cederwall, A.Dewald, C.Fransen, T.Grahn, P.T.Greenlees, M.Hackstein, U.Jakobsson, P.M.Jones, R.Julin, S.Juutinen, S.Ketelhut, M.Leino, R.Liotta, N.M.Lumley, P.J.R.Mason, P.Nieminen, M.Nyman, J.Pakarinen, T.Pissulla, P.Peura, P.Rahkila, J.Revill, S.V.Rigby, W.Rother, M.Sandzelius, J.Saren, J.Sorri, M.J.Taylor, J.Uusitalo, P.Wady, C.Qi, F.R.Xu

Anomalous transition strength in the proton-unbound nucleus 10953I56

NUCLEAR REACTIONS 58Ni(54Fe, 2np)109I, E=206 MeV; measured reaction products, Eγ, Iγ; deduced σ, lifetime or T1/2 for the first excited state. Comparison with theoretical calculations, Recoil distance Doppler-shift method.

doi: 10.1016/j.physletb.2011.09.012
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2011QI08      Phys.Rev. C 84, 021301 (2011)

C.Qi, J.Blomqvist, T.Back, B.Cederwall, A.Johnson, R.J.Liotta, R.Wyss

Spin-aligned neutron-proton pair mode in atomic nuclei

NUCLEAR STRUCTURE 92Pd; calculated levels, J, π, B(E2), yrast states, isoscalar neutron-proton pair mode coupling scheme. Shell Model. Comparison with systematics of yrast states for 94,96Pd, 96Cd, 94Ag, and with experimental data

doi: 10.1103/PhysRevC.84.021301
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2011XU03      Nucl.Phys. A850, 53 (2011)

Z.X.Xu, R.J.Liotta, C.Qi, T.Roger, P.Roussel-Chomaz, H.Savajols, R.Wyss

Analysis of the unbound spectrum of 12Li

NUCLEAR STRUCTURE 12Li; calculated levels, J, π using a multi-step shell model. Comparison with data.

doi: 10.1016/j.nuclphysa.2010.12.003
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2010DE27      Phys.Rev. C 82, 024307 (2010)

D.S.Delion, R.Wyss, R.J.Liotta, B.Cederwall, A.Johnson, M.Sandzelius

Investigations of proton-neutron correlations close to the drip line

NUCLEAR STRUCTURE 102,104,106,108,110,112,114,116,118,120,122,124,126Sn, 106,108,110,112,114,116,118,120,122,124,126,128Te, 108,110,112,114,116,118,120,122,124,126,128,130Xe, 210,212,214Pb, 210,212,214,216,218Po, 212,214,216,218,220,222Rn, 214,216,218,220,222,224,226Ra; calculated lowest QRPA 2+ eigenvalues, B(E2), proton-neutron coupling strength, proton-neutron pairing gap, proton pairing gap, and neutron pairing gap using proton-neutron pairing plus quadrupole Hamiltonian approach. Comparison with experimental data.

doi: 10.1103/PhysRevC.82.024307
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2010QI04      Phys.Rev. C 81, 064319 (2010)

C.Qi, A.N.Andreyev, M.Huyse, R.J.Liotta, P.Van Duppen, R.A.Wyss

Abrupt changes in α-decay systematics as a manifestation of collective nuclear modes

doi: 10.1103/PhysRevC.81.064319
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2010QI05      Phys.Rev. C 82, 014304 (2010)

C.Qi, X.B.Wang, Z.X.Xu, R.J.Liotta, R.Wyss, F.R.Xu

Alternate proof of the Rowe-Rosensteel proposition and seniority conservation

doi: 10.1103/PhysRevC.82.014304
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2010XU04      Phys.Rev. C 81, 054319 (2010)

C.Xu, C.Qi, R.J.Liotta, R.Wyss, S.M.Wang, F.R.Xu, D.X.Jiang

Molecular structure of highly excited resonant states in 24Mg and the corresponding 8Be+16O and 12C+12C decays

NUCLEAR REACTIONS 12C(12C, X)24Mg, E not given; calculated excitation energies, J, π, widths, and 8Be+16O decays of 24Mg resonances using cluster model. Comparison with experimental data.

doi: 10.1103/PhysRevC.81.054319
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2009DU16      Phys.Rev. C 80, 064311 (2009)

G.G.Dussel, R.Id Betan, R.J.Liotta, T.Vertse

Collective excitations in the continuum

NUCLEAR STRUCTURE 208,210Pb, 210Po, 210Bi; calculated giant pairing (particle-particle and particle-hole) resonance (GPR) wave functions using shell-model formalism in the complex energy plane.

NUCLEAR REACTIONS 208Pb(3He, n), E=100 MeV; calculated σ(θ) for two-particle transfer to GPR in 210Po using optical potential model.

doi: 10.1103/PhysRevC.80.064311
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2009QI05      Phys.Rev.Lett. 103, 072501 (2009)

C.Qi, F.R.Xu, R.J.Liotta, R.Wyss

Universal Decay Law in Charged-Particle Emission and Exotic Cluster Radioactivity

doi: 10.1103/PhysRevLett.103.072501
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2009QI07      Phys.Rev. C 80, 044326 (2009)

C.Qi, F.R.Xu, R.J.Liotta, R.Wyss, M.Y.Zhang, C.Asawatangtrakuldee, D.Hu

Microscopic mechanism of charged-particle radioactivity and generalization of the Geiger-Nuttall law

RADIOACTIVITY 106,108Te, 110,112Xe, 114Ba(α); 110,112Xe, 114Ba, 154Dy, 158Yb, 160,162Hf, 162,166W, 166,168Os, 166,168,170,172Pt, 172,174,176,180Hg, 178,180,184Pb, 202,218,220,222,224,226Ra, 220,222,224,226Th, 222,224,226,228U, 228Pu(12C); 220,222Rn, 220,222,224,226Ra, 222,224,226,228,230Th, 226,228,230U, 228Pu(14C); 112Xe, 114Ba, 162Hf, 166Os, 168Pt, 172Hg, 224,226Th, 226,228U, 228Pu(16O); 226,228,230Th, 228U(18O); 226Ra, 228,230Th(20O); 230,232U, 232Pu(22Ne); 228,230,232Th, 230,232,234U, 234Pu(24Ne); 232U, 232,234Pu(26Mg); 232,234U, 234,236,238Pu, 238Cm(28Mg); 238Cm(30Si); 236,238Pu, 238,240Cm(32Si); 238,240Pu, 240,242Cm(34Si); Z=50-120, even Z, N=54-176, odd N(α); Z=50-115, N=55-175(12C); Z=85-115, N=115-175(14C); A=100-290(α), (12C), (14C); Z=88-116, N=130-176(24Ne); calculated half-lives using universal decay law (UDL). Generalization of the Geiger-Nuttall law. Comparison with experimental data.

doi: 10.1103/PhysRevC.80.044326
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2008CI06      Phys.Rev. C 78, 064308 (2008)

O.Civitarese, R.J.Liotta, M.E.Mosquera

Effects of resonant and continuum states on the neutrino-nucleus cross section

NUCLEAR REACTIONS 208Pb(ν, e-), E<200 MeV; calculated σ, level energies, multipolarities.

doi: 10.1103/PhysRevC.78.064308
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2008ID02      Phys.Rev. C 78, 044325 (2008)

R.Id Betan, G.G.Dussel, R.J.Liotta

Assessment of the importance of the pairing interaction in the continuum

NUCLEAR STRUCTURE 132Sn; calculated bound single-particle state energies. 134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,163Sn; calculated excitation energies, gap parameters, binding energies.

doi: 10.1103/PhysRevC.78.044325
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2007DE53      Phys.Rev. C 76, 044301 (2007)

D.S.Delion, R.J.Liotta, R.Wyss

α decay of high-spin isomers in superheavy nuclei

RADIOACTIVITY 250,252,254,256,258Fm, 252,254,256,258,260No, 258,260,262,264,266,268,270,272Rf, 258,260,262,264,266,268,270,272Sg, 262,264,266,268,270,272Hs, 264,266,268,270,272,274Ds, 280,282,284,286,288Cn, 282,284,286,288,290Fl, 284,286,288,290,292Lv, 286,288,290,292,294Og, 288,290,292,294,296120(α); calculated α-decay hindrance factors, deformation parameters, spectroscopic factors for low- and high-spin states.

doi: 10.1103/PhysRevC.76.044301
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2007DU23      Nucl.Phys. A789, 182 (2007)

G.G.Dussel, R.Id Betan, R.J.Liotta, T.Vertse

One- and two-quasiparticle states in the complex energy plane

doi: 10.1016/j.nuclphysa.2007.04.005
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2007HA45      Phys.Rev. C 76, 044312 (2007)

B.Hadinia, B.Cederwall, D.T.Joss, R.Wyss, R.D.Page, C.Scholey, A.Johnson, K.Lagergren, E.Ganioglu, K.Andgren, T.Back, D.E.Appelbe, C.J.Barton, S.Eeckhaudt, T.Grahn, P.Greenlees, P.Jones, R.Julin, S.Juutinen, H.Kettunen, M.Leino, A.-P.Lepanen, R.J.Liotta, P.Nieminen, J.Pakarinen, J.Perkowski, P.Rahkila, M.Sandzelius, J.Simpson, J.Uusitalo, K.Van de Vel, D.D.Warner, D.R.Wiseman

In-beam γ-ray and α-decay spectroscopy of 170Ir

NUCLEAR REACTIONS 112Sn(60Ni, np), E=266 MeV; measured Eγ, Iγ, recoil decay tagging, γγ-, (recoil)γ-coin; 170Ir deduced levels, J, π, bands, half-lives. JUROGAM array used with RITU, GREAT spectrometer.

RADIOACTIVITY 170Ir(α); measured E(α). 166Re; deduced levels.

doi: 10.1103/PhysRevC.76.044312
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2006DE04      Phys.Rep. 424, 113 (2006)

D.S.Delion, R.J.Liotta, R.Wyss

Theories of proton emission

doi: 10.1016/j.physrep.2005.11.001
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2006DE07      Phys.Rev.Lett. 96, 072501 (2006)

D.S.Delion, R.J.Liotta, R.Wyss

Systematics of Proton Emission

RADIOACTIVITY 105Sb, 109I, 112,113Cs, 117La, 121Pr, 130,131Eu, 135Tb, 140,141Ho, 145,146,147Tm, 150,151Lu, 155,156,157Ta, 160,161Re, 164,165,167Ir, 171Au, 177Tl, 185Bi(p); analyzed proton decay T1/2, Q; deduced systematic trends.

doi: 10.1103/PhysRevLett.96.072501
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2006KA29      Phys.Rev. C 73, 064304 (2006)

D.Karlgren, R.J.Liotta, R.Wyss, M.Huyse, K.Van de Vel, P.Van Duppen

α-decay hindrance factors: A probe of mean-field wave functions

NUCLEAR STRUCTURE 188,194,196,198Po, 200,202Rn; calculated potential energy surfaces, α-decay hindrance factors. Comparison with data.

doi: 10.1103/PhysRevC.73.064304
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2005ID01      J.Phys.(London) G31, S1329 (2005)

R.Id Betan, R.J.Liotta, N.Sandulescu, T.Vertse

Description of the continuum part of the spectrum by using the complex energy plane

NUCLEAR STRUCTURE 80Ni; calculated resonance energies, continuum features. 11Li; calculated ground state wave function, resonance and halo features. Complex energy plane.

doi: 10.1088/0954-3899/31/8/011
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2005ID02      Phys.Rev. C 72, 054322 (2005)

R.Id Betan, R.J.Liotta, N.Sandulescu, T.Vertse, R.Wyss

Complex shell model representation including antibound states

NUCLEAR STRUCTURE 11Li, 72Ca; calculated ground and excited states energies, two-particle wave functions; deduced halo features. Shell model formalism with antibound states.

doi: 10.1103/PhysRevC.72.054322
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2004DE54      Phys.Rev. C 70, 061301 (2004)

D.S.Delion, R.Wyss, D.Karlgren, R.J.Liotta

Proton emission from triaxial nuclei

RADIOACTIVITY 161Re, 185Bi(p); calculated proton emission T1/2, angular distribution, sensitivity to triaxial deformation.

doi: 10.1103/PhysRevC.70.061301
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2004HA59      Phys.Rev. C 70, 064314 (2004)

B.Hadinia, B.Cederwall, K.Lagergren, J.Blomqvist, T.Back, S.Eeckhaudt, T.Grahn, P.Greenlees, A.Johnson, D.T.Joss, R.Julin, S.Juutinen, H.Kettunen, M.Leino, A.-P.Leppanen, R.J.Liotta, P.Nieminen, M.Nyman, J.Pakarinen, E.S.Paul, P.Rahkila, C.Scholey, J.Uusitalo, R.Wadsworth, D.R.Wiseman

First identification of γ-ray transitions in 107Te

NUCLEAR REACTIONS 58Ni(52Cr, 3n), E=187 MeV; measured Eγ, Iγ, γγ-, (recoil)γ-coin. 107Te deduced transitions, excited state. Jurogam array, recoil-decay tagging.

RADIOACTIVITY 107Te(α) [from 58Ni(52Cr, 3n)]; measured Eα, Iα.

doi: 10.1103/PhysRevC.70.064314
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2004ID01      Phys.Lett. B 584, 48 (2004)

R.Id Betan, R.J.Liotta, N.Sandulescu, T.Vertse

A shell model representation with antibound states

NUCLEAR STRUCTURE 11Li, 72Ca; calculated two-particle resonance features, role of antibound states.

doi: 10.1016/j.physletb.2004.01.042
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2004ID02      Few-Body Systems 34, 51 (2004)

R.Id Betan, R.J.Liotta, N.Sandulescu, T.Vertse

Two-Particle Resonances in the Complex Energy Plane

NUCLEAR STRUCTURE 11Li; calculated resonance energies.

doi: 10.1007/s00601-004-0028-4
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2004SA15      Phys.Rev. C 69, 045802 (2004)

N.Sandulescu, N.Van Giai, R.J.Liotta

Superfluid properties of the inner crust of neutron stars

doi: 10.1103/PhysRevC.69.045802
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2003DE17      Phys.Rev. C 67, 054317 (2003)

D.S.Delion, A.Insolia, R.J.Liotta

Anisotropic α decay in Am, Es, and Fm isotopes

RADIOACTIVITY 241,243Am, 253,255Es, 255,257Fm(α); calculated α-decay anisotropy. Microscopic approach.

doi: 10.1103/PhysRevC.67.054317
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2003DE35      Phys.Rev. C 68, 054603 (2003)

D.S.Delion, R.J.Liotta, R.Wyss

High-spin proton emitters in odd-odd nuclei and shape changes

RADIOACTIVITY 58Cu(p); calculated T1/2; deduced hindrance due to change in deformation, other structure effects.

doi: 10.1103/PhysRevC.68.054603
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2003ID01      Phys.Rev. C 67, 014322 (2003)

R.Id Betan, R.J.Liotta, N.Sandulescu, T.Vertse

Shell model in the complex energy plane and two-particle resonances

NUCLEAR STRUCTURE 78Ni, 100Sn; calculated single-particle states, two-particle resonance features. Shell model in the complex energy plane.

doi: 10.1103/PhysRevC.67.014322
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2003ID03      Acta Phys.Hung.N.S. 18, 267 (2003)

R.Id Betan, R.J.Liotta, N.Sandulescu, T.Vertse

Clusters as Many-Body Resonances

NUCLEAR STRUCTURE 80Ni; calculated two-particle resonance energies.

doi: 10.1556/APH.18.2003.2-4.24
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2002DE24      Yad.Fiz. 65, 685 (2002); Phys.Atomic Nuclei 65, 653 (2002)

D.S.Delion, A.Insolia, R.J.Liotta

Anisotropic α Decay

RADIOACTIVITY 241Am, 199,201,203,205,207,209,211,217At, 221Fr, 227,229Pa(α); calculated α-decay anisotropy, deformation effects. Microscopic approach.

doi: 10.1134/1.1471268
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2002ID01      Phys.Rev.Lett. 89, 042501 (2002)

R.Id Betan, R.J.Liotta, N.Sandulescu, T.Vertse

Two-Particle Resonant States in a Many-Body Mean Field

NUCLEAR STRUCTURE 80Ni; calculated two-particle resonance energies. Berggren representation.

doi: 10.1103/PhysRevLett.89.042501
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2001BI02      Phys.Rev. C63, 024610 (2001)

A.Bianchini, R.J.Liotta, N.Sandulescu

Critical Assessment of Particle Decay as a Probe to Study the Continuum

doi: 10.1103/PhysRevC.63.024610
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2001CI07      Phys.Rev. C64, 057305 (2001)

O.Civitarese, R.J.Liotta, T.Vertse

Temperature Dependent BCS-Gap Equations in the Continuum

NUCLEAR STRUCTURE Z=50-112; calculated quasiparticle energies, pair gaps for N=50, 114. 106Ba, 204Th; calculated pair gap vs temperature. Suitability of BCS method near proton drip line discussed.

doi: 10.1103/PhysRevC.64.057305
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2001GR32      Phys.Rev. C64, 064321 (2001)

M.Grasso, N.Sandulescu, V.G.Nguyen, R.J.Liotta

Pairing and Continuum Effects in Nuclei Close to the Drip Line

NUCLEAR STRUCTURE 84Ni; calculated single-particle energies, widths, neutron pairing densities. 74,76,78,80,82,84,86,88Ni; calculated pairing correlation energies, two-neutron separation energies, neutron radii. Hartree-Fock-Bogoliubov calculations, different boundary conditions compared.

doi: 10.1103/PhysRevC.64.064321
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2001KA06      Phys.Rev. C63, 034304 (2001)

S.P.Kamerdzhiev, R.J.Liotta, V.I.Tselyaev

Random Phase Approximation for Odd Nuclei and Its Application to the Description of the Electric Dipole Modes in 17O

NUCLEAR STRUCTURE 16,17O; calculated E1 resonance photoabsorption σ. Generalization of RPA for odd nuclei.

doi: 10.1103/PhysRevC.63.034304
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2001KR06      Phys.Rev. C63, 044324 (2001)

A.T.Kruppa, P.H.Heenen, R.J.Liotta

Resonances in the Hartree-Fock BCS Theory

NUCLEAR STRUCTURE 42,44Ti, 44,46Cr, 46,48Fe; calculated binding energies, radii. 40Ca, 48Ni; calculated single-particle resonance energies, widths. Hartree-Fock BCS theory.

doi: 10.1103/PhysRevC.63.044324
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2000SA14      Phys.Rev. C61, 044317 (2000)

N.Sandulescu, O.Civitarese, R.J.Liotta

Temperature Dependent BCS Equations with Continuum Coupling

doi: 10.1103/PhysRevC.61.044317
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2000SA27      Phys.Rev. C61, 061301 (2000)

N.Sandulescu, V.G.Nguyen, R.J.Liotta

Resonant Continuum in the Hartree-Fock + BCS Approximation

NUCLEAR STRUCTURE 84Ni; calculated neutron density, single-neutron levels energies, occupation numbers; deduced role of resonanant continuum. Hartree-Fock plus BCS approach.

doi: 10.1103/PhysRevC.61.061301
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1999DA05      Nucl.Phys. A646, 3 (1999)

I.Danko, Zs.Dombradi, Z.Gacsi, J.Gulyas, A.Krasznahorkay, N.Sandulescu, J.Blomqvist, R.J.Liotta

Low-Lying States of 109Sn from the 106Cd(α, nγ) Reaction

NUCLEAR REACTIONS 106Cd(α, nγ), E=15-20 MeV; measured Eγ, Iγ. 106Cd(α, nγ), E=20 MeV; measured Eγ, Iγ, E(ce), I(ce), γγ-coin. 109Sn deduced levels, J, π, ICC, configurations. Superconducting magnetic lens electron spectrometer. Quasiparticle shell model analysis.

doi: 10.1016/S0375-9474(98)00631-9
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1999DE51      Nucl.Phys. (Supplement) A654, 673c (1999)

D.S.Delion, A.Insolia, R.J.Liotta

Alpha and Exotic Cluster Decay with a New Single Particle Basis

RADIOACTIVITY 212Po, 214Po, 216Po, 218Po, 216Rn, 218Rn, 220Rn, 222Rn, 220Ra, 222Ra, 224Ra, 226Ra, 224Th, 226Th, 228Th, 230Th, 232Th, 230U, 232U, 234U, 236U, 238U, 238Pu, 240Pu, 242Pu, 244Pu(α), 222Ra, 224Ra, 226Ra(14C); calculated spherical and deformed decay widths. Comparison with data, effects of deformation discussed.

doi: 10.1016/S0375-9474(00)88524-3
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1999KI13      Phys.Scr. 59, 416 (1999)

E.D.Kirchuk, J.Blomqvist, R.J.Liotta

Δ Contribution for the Gamow-Teller Strength

doi: 10.1238/Physica.Regular.059a00416
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1999MA05      Phys.Rev. C59, R589 (1999)

E.Maglione, L.S.Ferreira, R.J.Liotta

Proton Emission from Deformed Nuclei

NUCLEAR STRUCTURE 109I, 131Eu, 141Ho; analyzed proton decay T1/2; deduced parent states deformation, configuration. Nilsson model.

doi: 10.1103/PhysRevC.59.R589
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1999PO04      Phys.Rev. C59, 1534 (1999)

G.Pollarolo, L.S.Ferreira, R.J.Liotta, E.Maglione

Imaginary Potential for Exotic Nuclei

NUCLEAR REACTIONS 124Sn(36Ca, 36Ca), (40Ca, 40Ca), (48Ca, 48Ca), (60Ca, 60Ca), E=167-192 MeV; calculated σ(θ), absorption, polarization potentials; deduced transfer, continuum contributions.

doi: 10.1103/PhysRevC.59.1534
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1998DE05      Phys.Rev. C57, 986 (1998)

D.S.Delion, R.J.Liotta, N.Sandulescu, T.Vertse

Probing Monopole Double Giant Resonances by Dilepton (E0) Emission

NUCLEAR STRUCTURE 208Pb; calculated two-particle plus two-hole levels, partial decay widths; deduced continuum coupling role, monopole, double giant resonances decay features.

doi: 10.1103/PhysRevC.57.986
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1998DE42      Phys.Rev. C58, 2073 (1998)

D.S.Delion, R.J.Liotta

Microscopic Description of α Decay from Superdeformed Nuclei

NUCLEAR STRUCTURE 152Dy, 192Pb; calculated α decay probability from superdeformed states. Microscopic model, exact treatment of barrier penetration.

doi: 10.1103/PhysRevC.58.2073
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1998KA29      Phys.Rev. C58, 172 (1998)

S.Kamerdzhiev, R.J.Liotta, E.Litvinova, V.Tselyaev

Continuum Quasiparticle Random-Phase Approximation Description of Isovector E1 Giant Resonances

NUCLEAR STRUCTURE 100,104,120,132Sn; calculated E1 photoabsorption σ; deduced continuum effect on giant resonances. Continuum RPA, forced consistency procedure.

doi: 10.1103/PhysRevC.58.172
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1998LO10      Phys.Rep. 294, 265 (1998)

R.G.Lovas, R.J.Liotta, A.Insolia, K.Varga, D.S.Delion

Microscopic Theory of Cluster Radioactivity

doi: 10.1016/S0370-1573(97)00049-5
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1998MA42      Phys.Rev.Lett. 81, 538 (1998)

E.Maglione, L.S.Ferreira, R.J.Liotta

Nucleon Decay from Deformed Nuclei

NUCLEAR STRUCTURE 113Cs; calculated single particle levels; deduced particle decay widths.

RADIOACTIVITY 113Cs(p); analyzed data; deduced parent state deformation, related features.

doi: 10.1103/PhysRevLett.81.538
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1998ST02      Phys.Rev. C57, 798 (1998)

E.Stefanescu, R.J.Liotta, A.Sandulescu

Giant Resonances as Collective States with Dissipative Coupling

doi: 10.1103/PhysRevC.57.798
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1998TS15      Bull.Rus.Acad.Sci.Phys. 62, 880 (1998)

V.I.Tselyaev, S.P.Kamerdzhiev, R.Liotta, E.V.Litvinova

Calculation of E1 Resonance by the ' QRPA + Continuum ' Model

NUCLEAR STRUCTURE 104,120Sn; calculated isovector E1 resonance strength distribution; deduced role of single-particle continuum. QRPA plus continuum model.

1998VE02      Phys.Rev. C57, 3089 (1998)

T.Vertse, A.T.Kruppa, R.J.Liotta, W.Nazarewicz, N.Sandulescu, T.R.Werner

Shell Corrections for Finite Depth Potentials: Particle continuum effects

NUCLEAR STRUCTURE 78Ni, 90,96,104,106,108,110,122Zr, 124Zr, 132Sn, 146Gd, 208Pb, 298Fl; calculated neutron shell correction energies. 48Ni, 90Zr, 100,132Sn, 146Gd, 180,208Pb; calculated proton shell correction energies. 146Gd, 208Pb calculated smoothed level densities. Smoothing procedure with particle continuum contribution.

doi: 10.1103/PhysRevC.57.3089
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1997DE16      Phys.Rev.Lett. 78, 4549 (1997)

D.S.Delion, A.Insolia, R.J.Liotta

Pairing Correlation and Quadrupole Deformation Effects on the 14C Decay

RADIOACTIVITY 222,224,226Ra(α), (12C); calculated relative penetration factor, absolute 14C-decay widths. Heavy cluster decay, microscopic description.

doi: 10.1103/PhysRevLett.78.4549
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1997DE30      Phys.Rev. C56, 1782 (1997)

D.S.Delion, R.J.Liotta

Nuclear Deformation in α Decay

RADIOACTIVITY 170,172,174Os, 174,176,178Pt, 178,180,182Hg(α); calculated α-decay widths, spectroscopic factors; deduced quadrupole deformation role. Micoroscopic calculations.

doi: 10.1103/PhysRevC.56.1782
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1997FE05      Phys.Rev.Lett. 78, 1640 (1997)

L.S.Ferreira, E.Maglione, R.J.Liotta

Nucleon Resonances in Deformed Nuclei

NUCLEAR STRUCTURE 154Sm; analyzed single particle spectra. Coupled-channels approach, Woods-Saxon axially deformed potential.

doi: 10.1103/PhysRevLett.78.1640
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1997KR10      Phys.Rev.Lett. 79, 2217 (1997)

A.T.Kruppa, P.-H.Heenen, H.Flocard, R.J.Liotta

Particle-Unstable Nuclei in the Hartree-Fock Theory

NUCLEAR STRUCTURE 6,8,10He, 10C, 12,14,16,22,24,26,28O; calculated binding energies. 10He, 12,26,28O; calculated ground state decay widths. Complex scaled Hartree-Fock procedure, Skyrme effective interactions, several parametrizations compared.

doi: 10.1103/PhysRevLett.79.2217
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1997LI43      Nuovo Cim. 110A, 1055 (1997)


The Continuum in Cluster Decay

doi: 10.1007/BF03035945
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1997SA08      Phys.Rev. C55, 1250 (1997)

N.Sandulescu, O.Civitarese, R.J.Liotta, T.Vertse

Effects Due to the Continuum on Shell Corrections at Finite Temperatures

NUCLEAR STRUCTURE 208Pb; calculated neutrons shell correction to free energy; deduced corrections wash out temperature. Extension of Strutinsky method, finite depth mean field potential continuum spectrum included.

doi: 10.1103/PhysRevC.55.1250
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1997SA18      Phys.Lett. 394B, 6 (1997)

N.Sandulescu, R.J.Liotta, R.Wyss

BCS Equations in the Continuum

NUCLEAR STRUCTURE 170Sn; calculated continuum single particle spectrum resonant part. BCS equations, pairing correlations.

doi: 10.1016/S0370-2693(96)01688-7
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1997SA22      Phys.Rev. C55, 2708 (1997)

N.Sandulescu, J.Blomqvist, T.Engeland, M.Hjorth-Jensen, A.Holt, R.J.Liotta, E.Osnes

Generalized Seniority Scheme in Light Sn Isotopes

NUCLEAR STRUCTURE 104,106,108,110,112Sn; calculated levels, wave functions. Generalized seniority scheme, shell model, truncation.

doi: 10.1103/PhysRevC.55.2708
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1996BL05      Phys.Rev. C53, 2001 (1996)

J.Blomqvist, O.Civitarese, E.D.Kirchuk, R.J.Liotta, T.Vertse

Feeding of Hole States by Proton Decay of Gamow-Teller and Isobaric Analog State Resonances

NUCLEAR STRUCTURE 209Bi; calculated Gamow-Teller, IAR proton decay partial widths. RPA, Breggren representation.

doi: 10.1103/PhysRevC.53.2001
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1996DA26      Phys.Rev. C54, 1217 (1996)

C.H.Dasso, R.J.Liotta, M.Lozano

Dynamic Effective Potential for α-Particle Bound and Quasibound States

NUCLEAR REACTIONS 208Pb(α, α), E=16-480 MeV; analyzed data; deduced average potential V0(E).

RADIOACTIVITY 212Po(α); calculated T1/2, penetration probability vs r(c). Dynamic effective potential.

doi: 10.1103/PhysRevC.54.1217
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1996DE19      Phys.Rev. C54, 292 (1996)

D.S.Delion, A.Insolia, R.J.Liotta

New Single Particle Basis for Microscopic Description of Decay Processes

RADIOACTIVITY 212,214,216,218Po, 216,218,220,222Rn, 220,222,224,226Ra, 224,226,228,230,232Th, 230,232,234,236,238U, 238,240,242,244Pu(α); calculated absolute α-decay widths. Microscopic description.

doi: 10.1103/PhysRevC.54.292
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1996DE37      Phys.Rev. C54, 1169 (1996)

D.S.Delion, A.Florescu, M.Huyse, J.Wauters, P.Van Duppen, A.Insolia, R.J.Liotta, and the ISOLDE Collaboration

α Decay as a Probe for Phase Transitions in Nuclei

RADIOACTIVITY 198,196,194Po, 202,200Rn, 188,186Pb, 184,182,180Hg(α); calculated α-decay hindrance factors; deduced nucleon correlations role, phase transitions probing possibility.

doi: 10.1103/PhysRevC.54.1169
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1996FO09      Phys.Rev. C54, 3279 (1996)

S.Fortunato, A.Insolia, R.J.Liotta, T.Vertse

Two-Particle - One-Hole Excitations in the Continuum

NUCLEAR STRUCTURE 209Bi; calculated i11/2, j15/2 states strength function. 209Pb; calculated neutron decay associated branching ratios. Resonant multi-step shell model method.

doi: 10.1103/PhysRevC.54.3279
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1996LI08      Nucl.Phys. A599, 327c (1996)

R.J.Liotta, E.Maglione, T.Vertse

Microscopic Structure and Decay Characteristics of Giant Resonances

NUCLEAR STRUCTURE 208Pb; calculated monopole, dipole, quadrupole resonances, sum rule exhaustion, decay (in some cases) features. Continuum RPA.

doi: 10.1016/0375-9474(96)00075-9
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1996LI57      Phys.Lett. 367B, 1 (1996)

R.J.Liotta, E.Maglione, N.Sandulescu, T.Vertse

A Representation to Describe Nuclear Processes in the Continuum

doi: 10.1016/0370-2693(95)01415-2
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