NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = P.Farris Found 17 matches. 2024HE01 Phys.Rev. C 109, 014327 (2024) J.Heery, J.Henderson, C.R.Hoffman, A.M.Hill, T.Beck, C.Cousins, P.Farris, A.Gade, S.A.Gillespie, J.D.Holt, B.Hu, H.Iwasaki, S.Kisyov, A.N.Kuchera, B.Longfellow, C.Muller-Gatermann, A.Poves, E.Rubino, R.Russell, R.Salinas, A.Sanchez, D.Weisshaar, C.Y.Wu, J.Wu Suppressed electric quadrupole collectivity in 32Si
doi: 10.1103/PhysRevC.109.014327
2024SP01 Phys.Rev. C 109, 014307 (2024) M.Spieker, D.Bazin, S.Biswas, P.D.Cottle, P.J.Farris, A.Gade, T.Ginter, S.Giraud, K.W.Kemper, J.Li, S.Noji, J.Pereira, L.A.Riley, M.K.Smith, D.Weisshaar, R.G.T.Zegers Proton removal from 73, 75Br to 72, 74Se at intermediate energies
doi: 10.1103/PhysRevC.109.014307
2023BE26 Phys.Rev. C 108, L061301 (2023) T.Beck, A.Gade, B.A.Brown, J.A.Tostevin, D.Weisshaar, D.Bazin, K.W.Brown, R.J.Charity, P.J.Farris, S.A.Gillespie, A.M.Hill, J.Li, B.Longfellow, W.Reviol, D.Rhodes Probing proton cross-shell excitations through the two-neutron removal from 38Ca
doi: 10.1103/PhysRevC.108.L061301
2023DR01 Phys.Rev. C 107, 034306 (2023) N.Dronchi, D.Weisshaar, B.A.Brown, A.Gade, R.J.Charity, L.G.Sobotka, K.W.Brown, W.Reviol, D.Bazin, P.J.Farris, A.M.Hill, J.Li, B.Longfellow, D.Rhodes, S.N.Paneru, S.A.Gillespie, A.Anthony, E.Rubino, S.Biswas Measurement of the B(E2 ↑) strengths of 36Ca and 38Ca NUCLEAR REACTIONS 197Au(36Ca, 36Ca), E=76.9 MeV/nucleon; 197Au(38Ca, 38Ca), E=69.1 MeV/nucleon; 197Au(34Ar, 34Ar), E not given; measured reaction products, Eγ, Iγ; deduced σ and B(E2) for the excitation of the first 2+ (34Ar was present as contamination). 36Ca; deduced proton decay branching ratio for 2 state proton unbound state, spectroscopic factors, charge radii difference with mirror nuclei 36S. 35K(p, γ), T=0.5-2 GK; deduced reaction rate using obtained in this paper values for the 36Ca B(E2) and proton branching ratio. GRETINA HPGe array and the S800 spectrograph used to measure the γ-decay following Coulomb excitation. CAESAR CsI(Na) array and the S800 spectrograph used to measure the p/γ- branching ratio in 36Ca. Systematics of first 2+ states energy and B(E2) for Ca isotopes. Beam produced from fragmentation reaction 9Be(40Ca, X), E=140 MeV/nucleon at Coupled Cyclotron Facility (NSCL). NUCLEAR STRUCTURE 36,38,40,42,44,46,48,50Ca, 36S, 38Ar; calculated energy of first 2+ state, B(E2) for the excitation of first 2+ state. Shell model calculations with ZBM2, USDB, spdfu-mix and GXPF1A interactions. Comparison to experimental data.
doi: 10.1103/PhysRevC.107.034306
2023RE02 Phys.Lett. B 838, 137704 (2023) A.Revel, J.Wu, H.Iwasaki, J.Ash, D.Bazin, B.A.Brown, J.Chen, R.Elder, P.Farris, A.Gade, M.Grinder, N.Kobayashi, J.Li, B.Longfellow, T.Mijatovic, J.Pereira, A.Poves, A.Sanchez, N.Shimizu, M.Spieker, Y.Utsuno, D.Weisshaar Large collectivity in 29Ne at the boundary of the island of inversion NUCLEAR REACTIONS 181Ta, 9Be(29Ne, 29Ne'), E=101 MeV/nucleon; measured reaction products, Eγ, Iγ. 29Ne; deduced γ-ray energies, partial level scheme, B(E2). Comparison with shell-model calculations using FSU, SDPF-M, SDPF-U-MIX and EEdf1 interactions. The GRETINA array, the TRIPLEX device, the S800 Spectrograph facilitates at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University.
doi: 10.1016/j.physletb.2023.137704
2023RU06 Phys.Rev. C 108, 064311 (2023) R.Russell, J.Heery, J.Henderson, C.R.Hoffman, T.Beck, C.Cousins, P.Farris, A.Gade, S.A.Gillespie, A.Hill, H.Iwasaki, S.Kisyov, A.N.Kuchera, B.Longfellow, C.Muller-Gatermann, K.Nomura, E.Rubino, R.Salinas, A.Sanchez, D.Weisshaar, C.Y.Wu, J.Wu Coulomb excitation of 96Mo
doi: 10.1103/PhysRevC.108.064311
2023SP02 Phys.Lett. B 841, 137932 (2023) M.Spieker, S.E.Agbemava, D.Bazin, S.Biswas, P.D.Cottle, P.J.Farris, A.Gade, T.Ginter, S.Giraud, K.W.Kemper, J.Li, W.Nazarewicz, S.Noji, J.Pereira, L.A.Riley, M.Smith, D.Weisshaar, R.G.T.Zegers Hexadecapole strength in the rare isotopes 74, 76Kr NUCLEAR REACTIONS 1H(74Kr, 74Kr'), (76Kr, 76Kr'), E(cm)=100 MeV, [secondary 74,76Kr beams from 9Be(78Kr, X), E=150 MeV/nucleon primary reaction, followed by separation of fragments using A1900 separator]; measured Doppler-corrected Eγ, Iγ, (particle)γ-coin using NSCL-MSU using NSCL/Ursinus Liquid Hydrogen (LH2) Target, eight GRETINA modules of 36-fold segmented HPGe detectors for γ radiation, and S800 spectrograph for projectile-like reaction residues. 74,76Kr; deduced levels, Jπ, β2 for the first 2+ state and β4 and B(E4)(W.u.) for the first 4+ state from inelastic proton scattering experiments in inverse kinematics. Comparison to coupled-channels calculations, and nuclear density functional theory (DFT) calculations using the Skyrme SkM* and UNEDF1 energy density functionals, covariant NL3* and DD-PC1 energy density functionals. Systematics and theoretical predictions of β2, β4 and B(E4)(W.u.) for 74,76,78,80,82,84,86Kr.
doi: 10.1016/j.physletb.2023.137932
2022GA31 Phys.Rev.Lett. 129, 242501 (2022) A.Gade, B.A.Brown, D.Weisshaar, D.Bazin, K.W.Brown, R.J.Charity, P.Farris, A.M.Hill, J.Li, B.Longfellow, D.Rhodes, W.Reviol, J.A.Tostevin Dissipative Reactions with Intermediate-Energy Beams: A Novel Approach to Populate Complex-Structure States in Rare Isotopes NUCLEAR REACTIONS 9Be(38Ca, 38Ca'), E=60.9 MeV/nucleon; measured reaction products, Eγ, Iγ. 38Ca; deduced γ-ray energies and relative intensities, partial level scheme, multiparticle-multihole excited states, negative-parity, complex-structure final states. Comparison with shell model calculations. The Coupled Cyclotron Facility at NSCL, GRETINA array.
doi: 10.1103/PhysRevLett.129.242501
2022GA32 Phys.Rev. C 106, 064303 (2022) A.Gade, D.Weisshaar, B.A.Brown, D.Bazin, K.W.Brown, R.J.Charity, P.Farris, A.M.Hill, J.Li, B.Longfellow, D.Rhodes, W.Reviol, J.A.Tostevin Exploiting dissipative reactions to perform in-beam γ-ray spectroscopy of the neutron-deficient isotopes 38, 39Ca NUCLEAR REACTIONS 9Be(38Ca, 38Ca), (38Ca, 39Ca), E=60.9 MeV/nucleon; measured reaction products Eγ, Iγ, γγ-coin, (particle)γ-coin. 38,39Ca; deduced levels, J, π, high-spin states. Comparison to shell-model calculations using the FSU spsdf p interaction and experimental results for 39K mirror nuclei. High resolution γ-ray tracking array GRETINA coupled with S800 spectroraph. Beam from fragmentation of 40Ca 140 MeV/nucleon primary beam on 9Be target in the A1900 separator at Coupled Cyclotron Facility (NSCL).
doi: 10.1103/PhysRevC.106.064303
2022KI17 Phys.Rev. C 106, 034311 (2022) S.Kisyov, C.Y.Wu, J.Henderson, A.Gade, K.Kaneko, Y.Sun, N.Shimizu, T.Mizusaki, D.Rhodes, S.Biswas, A.Chester, M.Devlin, P.Farris, A.M.Hill, J.Li, E.Rubino, D.Weisshaar Structure of 126, 128Xe studied in Coulomb excitation measurements NUCLEAR REACTIONS 196Pt, 208Pb(126Xe, 126Xe'), (128Xe, 128Xe'), E(126Xe)=3.74 MeV/nucleon, E(128Xe)=3.81 MeV/nucleon; measured reaction products, Eγ, Iγ, (126Xe)γ-coin, (128Xe)γ-coin using JANUS array consisting of a pair of segmented double-sided Si detectors for particles, and SeGA array with sixteen 32-fold segmented HPGe detector for γ radiation at the NSCL-MSU facility. 126,128Xe; deduced levels, J, π, E2 matrix elements, B(E2), static quadrupole moments. GOSIA + GOSIA2 analyses; calculated Potential-energy surfaces (PES) in (Q0, Q2) plane. Comparison with PMMU shell model calculations, and with previous experimental results.
doi: 10.1103/PhysRevC.106.034311
2022RH01 Phys.Rev. C 105, 024325 (2022) D.Rhodes, B.A.Brown, A.Gade, S.Biswas, A.Chester, P.Farris, J.Henderson, A.Hill, J.Li, F.Nowacki, E.Rubino, D.Weisshaar, C.Y.Wu Evolution of shape and collectivity along the Ge isotopic chain: The case of 80Ge NUCLEAR REACTIONS 196Pt(80Ge, 80Ge'), E=3.52 MeV/nucleon [secondary 80Ge beam produced in 9Be(82Se, X) reaction]; measured reaction products Eγ, Iγ, (particle)γ-coin. 80Ge; deduced B(E2), E2 and M1 matrix elements, spectroscopic quadrupole moments. GOSIA analisys. Comparison to other experimental results and shell model calculations. Results indicate a large prolate deformation in 80Ge. Systematics of B(E2) and quadrupole moments for even-A Ge isotopes. Detector system - Joint Array for Nuclear Structure (JANUS) consisting of two annular silicon detectors (Bambino2) with the Segmented Germanium Array (SeGA). Beam provided by reaccelerator facility (ReA3) of NSCL.
doi: 10.1103/PhysRevC.105.024325
2022SP04 Phys.Rev. C 106, 054305 (2022) M.Spieker, L.A.Riley, P.D.Cottle, K.W.Kemper, D.Bazin, S.Biswas, P.J.Farris, A.Gade, T.Ginter, S.Giraud, J.Li, S.Noji, J.Pereira, M.Smith, D.Weisshaar, R.G.T.Zegers Investigation of octupole collectivity near the A = 72 shape-transitional point NUCLEAR REACTIONS 1H(76Kr, p), (74Kr, p), (72Se, p), E(cm)≈ 100 MeV/nucleon; measured Eγ, Iγ, γγ-coin, angular distribution; deduced levels, J, π, B(E2), B(E3). Comparison to theoretical calculations performed in the framework of the configuration-mixing sdf IBM mapping approach. Systematics of B(E3) transition strength in Kr, Se and Ge isotopes. Established two regions of distinct octupole strengths with a sudden strength increase around the A = 72 prolate-oblate-triaxial shape-transitional point. Ursinus liquid hydrogen target coupled to 8 GRETINA modules, containing four, 36-fold segmented HPGe detectors each. Beams produced from a 150-MeV/nucleon 78Kr primary beam in projectile fragmentation on 9Be target at Coupled Cyclotron Facility NSCL.
doi: 10.1103/PhysRevC.106.054305
2021GA02 Phys.Rev. C 103, 014314 (2021) A.Gade, R.V.F.Janssens, D.Bazin, P.Farris, A.M.Hill, S.M.Lenzi, J.Li, D.Little, B.Longfellow, F.Nowacki, A.Poves, D.Rhodes, J.A.Tostevin, D.Weisshaar In-beam γ-ray spectroscopy of 62, 64Cr NUCLEAR REACTIONS 9Be(65Mn, 62Cr), (65Mn, 64Cr), (66Fe, 62Cr), (66Fe, 64Cr), (68Co, 62Cr), (68Co, 64Cr), E=90-95 MeV/nucleon, [secondary beams of 65Mn, 66Fe, 68Co from 9Be(82Se, X), E=140 MeV/nucleon primary reaction followed by separation of fragments using A1900 separator at NSCL-MSU Coupled Cyclotron Facility]; measured projectile-like reaction residues, Eγ, Iγ, (particle)γ-, and γγ-coin using GRETINA array for γ detection, and S800 ionization chamber with two plastic timing scintillators for detection of 62Cr and 64Cr particles analyzed through time-of-flight and energy loss. 62,64Cr; deduced levels, J, π. Comparison with shell-model calculations using LNPS interaction. NUCLEAR STRUCTURE 62,64Cr; calculated levels, J, π, B(E2) using shell-model calculations with Lenzi-Nowacki-Poves-Sieja (LNPS) interaction. Comparison with experimental data.
doi: 10.1103/PhysRevC.103.014314
2021GA15 Phys.Rev.Lett. 126, 152701 (2021) B.Gao, S.Giraud, K.A.Li, A.Sieverding, R.G.T.Zegers, X.Tang, J.Ash, Y.Ayyad-Limonge, D.Bazin, S.Biswas, B.A.Brown, J.Chen, M.DeNudt, P.Farris, J.M.Gabler, A.Gade, T.Ginter, M.Grinder, A.Heger, C.Hultquist, A.M.Hill, H.Iwasaki, E.Kwan, J.Li, B.Longfellow, C.Maher, F.Ndayisabye, S.Noji, J.Pereira, C.Qi, J.Rebenstock, A.Revel, D.Rhodes, A.Sanchez, J.Schmitt, C.Sumithrarachchi, B.H.Sun, D.Weisshaar New 59Fe Stellar Decay Rate with Implications for the 60Fe Radioactivity in Massive Stars NUCLEAR REACTIONS 59Co(t, 3He)59Fe, E=115 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, σ(θ), B(GT), β-decay rates. Comparison with stellar evolution calculations.
doi: 10.1103/PhysRevLett.126.152701
2021GA28 Phys.Rev. C 104, 024313 (2021) A.Gade, R.V.F.Janssens, B.A.Brown, R.G.T.Zegers, D.Bazin, P.Farris, A.M.Hill, J.Li, D.Little, B.Longfellow, F.Nowacki, D.Rhodes, D.Weisshaar In-beam γ-ray spectroscopy of 68Fe from charge exchange on 68Co projectiles NUCLEAR REACTIONS 9Be(68Co, 68Fe), E=95 MeV/nucleon, [secondary 68Co beam from 9Be(82Se, X), E=140 MeV/nucleon primary reaction, followed by separation of fragments using the A1900 fragment separator at NSCL-MSU]; measured reaction products, particle-identification spectrum using S-800 spectrograph, Eγ, Iγ, γγ- and (particle)γ-coin using GRETINA array of 11 modules of 36-fold segmented HPGe detectors. 68Fe; deduced levels, J, π, inclusive σ. Comparison with shell-model calculations using the LNPS interaction, and f7j4a Hamiltonian.
doi: 10.1103/PhysRevC.104.024313
2021HI09 Phys.Rev. C 104, 014305 (2021) A.M.Hill, A.Gade, D.Bazin, B.A.Brown, B.Elman, P.Farris, J.Li, B.Longfellow, J.Pereira, A.Revel, D.Rhodes, M.Spieker, D.Weisshaar In-beam γ-ray spectroscopy of 37-42P NUCLEAR REACTIONS 12C(45Cl, X), 37P/38P/39P/40P/41P/42P, E=62.5 MeV/nucleon, [secondary 45Cl beam produced in 9Be(48Ca, X), E=140 MeV/nucleon primary reaction at NSCL-MSU, followed by separation of fragments using A1900 fragment separator]; measured reaction products and particle identification spectra by energy loss and time-of-flight using S800 spectrograph, ionization chamber and plastic scintillators, Eγ, Iγ, γγ- and (particle)g-coin, T1/2 of levels by Doppler shifts using GRETINA array of four 36-fold segmented HPGe crystals. 37,38,39,40,41,42P; deduced levels, J, π, γ-branching ratios, Nilsson configurations of low-lying levels. Comparison with shell-model calculations. NUCLEAR STRUCTURE 37,38,39,40,41,42P; calculated levels, J, π, T1/2 of levels, level schemes with γ transitions, E2 matrix elements, B(M1), B(E2), magnetic dipole and electric quadrupole moments using shell-model with SDPF-MU interaction. Comparison with experimental data.
doi: 10.1103/PhysRevC.104.014305
2020GA23 Phys.Lett. B 808, 135637 (2020) A.Gade, D.Weisshaar, B.A.Brown, J.A.Tostevin, D.Bazin, K.Brown, R.J.Charity, P.J.Farris, A.M.Hill, J.Li, B.Longfellow, W.Reviol, D.Rhodes In-beam γ-ray spectroscopy at the proton dripline: 40Sc NUCLEAR REACTIONS 9Be(38Ca, X)40Sc, E=60.9 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π. Comparison with available data.
doi: 10.1016/j.physletb.2020.135637
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