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NSR database version of May 24, 2024.

Search: Author = S.Nikas

Found 9 matches.

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2024SP04      Phys.Rev.Lett. 132, 202701 (2024)

A.Spyrou, D.Mucher, P.A.Denissenkov, F.Herwig, E.C.Good, G.Balk, H.C.Berg, D.L.Bleuel, J.A.Clark, C.Dembski, P.A.DeYoung, B.Greaves, M.Guttormsen, C.Harris, A.C.Larsen, S.N.Liddick, S.Lyons, M.Markova, M.J.Mogannam, S.Nikas, J.Owens-Fryar, A.Palmisano-Kyle, G.Perdikakis, F.Pogliano, M.Quintieri, A.L.Richard, D.Santiago-Gonzalez, G.Savard, M.K.Smith, A.Sweet, A.Tsantiri, M.Wiedeking

First Study of the 139Ba(n, γ)140Ba Reaction to Constrain the Conditions for the Astrophysical i Process

RADIOACTIVITY 140Cs(β-); measured decay products, Eγ, Iγ; deduced γ-ray energies, γ-ray strength functions, nuclear level density, astrophysical reaction rates. Comparison with TALYS calculations. β-Oslo method, the CARIBU facility at Argonne National Laboratory.

doi: 10.1103/PhysRevLett.132.202701
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2024XI06      Phys.Rev. C 109, 035804 (2024)

W.Xian, S.Chen, S.Nikas, M.Rosenbusch, M.Wada, H.Ishiyama, D.Hou, S.Iimura, S.Nishimura, P.Schury, A.Takamine, S.Yan, F.Browne, P.Doornenbal, F.Flavigny, Y.Hirayama, Y.Ito, S.Kimura, T.M.Kojima, J.Lee, J.Liu, H.Miyatake, S.Michimasa, J.Y.Moon, S.Naimi, T.Niwase, T.Sonoda, D.Suzuki, Y.X.Watanabe, V.Werner, K.Wimmer, H.Wollnik

Mass measurements of neutron-rich A ≈ 90 nuclei constrain element abundances

doi: 10.1103/PhysRevC.109.035804
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2023HU25      Phys.Rev. C 108, 064315 (2023)

M.Hukkanen, W.Ryssens, P.Ascher, M.Bender, T.Eronen, S.Grevy, A.Kankainen, M.Stryjczyk, L.Al Ayoubi, S.Ayet, O.Beliuskina, C.Delafosse, Z.Ge, M.Gerbaux, W.Gins, A.Husson, A.Jaries, S.Kujanpaa, M.Mougeot, D.A.Nesterenko, S.Nikas, H.Penttila, I.Pohjalainen, A.Raggio, M.Reponen, S.Rinta-Antila, A.de Roubin, J.Ruotsalainen, V.Virtanen, A.P.Weaver

Binding energies of ground and isomeric states in neutron-rich ruthenium isotopes: Measurements at JYFLTRAP and comparison to theory

doi: 10.1103/PhysRevC.108.064315
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Data from this article have been entered in the XUNDL database. For more information, click here.


2023JA11      Phys.Rev. C 108, 064302 (2023)

A.Jaries, M.Stryjczyk, A.Kankainen, L.Al Ayoubi, O.Beliuskina, P.Delahaye, T.Eronen, M.Flayol, Z.Ge, W.Gins, M.Hukkanen, D.Kahl, S.Kujanpaa, D.Kumar, I.D.Moore, M.Mougeot, D.A.Nesterenko, S.Nikas, H.Penttila, D.Pitman-Weymouth, I.Pohjalainen, A.Raggio, W.Rattanasakuldilok, A.de Roubin, J.Ruotsalainen, V.Virtanen

High-precision Penning-trap mass measurements of Cd and In isotopes at JYFLTRAP remove the fluctuations in the two-neutron separation energies

doi: 10.1103/PhysRevC.108.064302
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Data from this article have been entered in the XUNDL database. For more information, click here.


2023NE13      Phys.Rev. C 108, 054301 (2023)

D.A.Nesterenko, J.Ruotsalainen, M.Stryjczyk, A.Kankainen, L.Al Ayoubi, O.Beliuskina, P.Delahaye, T.Eronen, M.Flayol, Z.Ge, W.Gins, M.Hukkanen, A.Jaries, D.Kahl, D.Kumar, S.Nikas, A.Ortiz-Cortes, H.Penttila, D.Pitman-Weymouth, A.Raggio, M.Ramalho, M.Reponen, S.Rinta-Antila, J.Romero, A.de Roubin, P.C.Srivastava, J.Suhonen, V.Virtanen, A.Zadvornaya

High-precision measurements of low-lying isomeric states in 120-124In with the JYFLTRAP double Penning trap

doi: 10.1103/PhysRevC.108.054301
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Data from this article have been entered in the XUNDL database. For more information, click here.


2020RE04      Phys.Rev. C 101, 025803 (2020)

M.P.Reiter, S.Ayet San Andres, S.Nikas, J.Lippuner, C.Andreoiu, C.Babcock, B.R.Barquest, J.Bollig, T.Brunner, T.Dickel, J.Dilling, I.Dillmann, E.Dunling, G.Gwinner, L.Graham, C.Hornung, R.Klawitter, B.Kootte, A.A.Kwiatkowski, Y.Lan, D.Lascar, K.G.Leach, E.Leistenschneider, G.Martinez-Pinedo, J.E.McKay, S.F.Paul, W.R.Plass, L.Roberts, H.Schatz, C.Scheidenberger, A.Sieverding, R.Steinbrugge, R.Thompson, M.E.Wieser, C.Will, D.Welch

Mass measurements of neutron-rich gallium isotopes refine production of nuclei of the first r-process abundance peak in neutron-star merger calculations

ATOMIC MASSES 80,81,82,83,84,85Ga; measured time-of-flight spectra and mass excesses using the Ion Guide Laser Ion Source (IG-LIS) and Multiple-Reflection Time-of-Flight Mass-Spectrometer and isobar separator (MR-TOF-MS) at TRIUMF-TITAN facility; deduced solar r-process abundances for A=70-140. Comparison with AME-2016 values. Systematics of experimental and theoretical S(2n) values for Z=30-33, N=46-57 isotopes.

doi: 10.1103/PhysRevC.101.025803
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2019VO05      Phys.Rev. C 99, 054609 (2019)

A.V.Voinov, T.Renstrom, D.L.Bleuel, S.M.Grimes, M.Guttormsen, A.C.Larsen, S.N.Liddick, G.Perdikakis, A.Spyrou, S.Akhtar, N.Alanazi, K.Brandenburg, C.R.Brune, T.W.Danley, S.Dhakal, P.Gastis, R.Giri, T.N.Massey, Z.Meisel, S.Nikas, S.N.Paneru, C.E.Parker, A.L.Richard

Level densities of 74, 76Ge from compound nuclear reactions

NUCLEAR STRUCTURE 68,70Zn(7Li, p), E=16 MeV; measured evaporated proton spectra from 2-25 MeV, σ, yields using silicon ΔE-E telescope at the Edwards tandem accelerator laboratory, Athens, Ohio. 74,76Ge; deduced nuclear level densities. Comparison with theoretical calculations using coupled-channel model of the EMPIRE code, GCM-RIPL-global, and BSFG-RIPL-global density models.

doi: 10.1103/PhysRevC.99.054609
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2018DE16      J.Phys.(London) G45, 055203 (2018)

P.Denissenkov, G.Perdikakis, F.Herwig, H.Schatz, C.Ritter, M.Pignatari, S.Jones, S.Nikas, A.Spyrou

The impact of (n, γ) reaction rate uncertainties of unstable isotopes near N = 50 on the i-process nucleosynthesis in He-shell flash white dwarfs

NUCLEAR REACTIONS 87,88,89Kr, 85,86Br, 89Rb, 89,92Sr(n, γ), E ∼ 30 keV; calculated mass fractions, astrophysical abundances of Rb, Sr, Y and Zr; deduced an impact of the uncertainties in the (n, γ) reaction rates on Monte Carlo simulation.

doi: 10.1088/1361-6471/aabb6e
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2016LI30      Phys.Rev.Lett. 116, 242502 (2016)

S.N.Liddick, A.Spyrou, B.P.Crider, F.Naqvi, A.C.Larsen, M.Guttormsen, M.Mumpower, R.Surman, G.Perdikakis, D.L.Bleuel, A.Couture, L.C.Campo, A.C.Dombos, R.Lewis, S.Mosby, S.Nikas, C.J.Prokop, T.Renstrom, B.Rubio, S.Siem, S.J.Quinn

Experimental Neutron Capture Rate Constraint Far from Stability

RADIOACTIVITY 70Co(β-) [from 9Be(86Kr, X), E=140 MeV/nucleon]; measured decay products, Eγ, Iγ; deduced nuclear level density as a function of excitation energy. Comparison with available data.

NUCLEAR REACTIONS 69Ni(n, γ), E<10 GK; calculated nuclear reaction capture rates using experimental level densities and code TALYS.

doi: 10.1103/PhysRevLett.116.242502
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