NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = J.M.Schmitt Found 14 matches. 2023GI06 Phys.Rev.Lett. 130, 232301 (2023) S.Giraud, J.C.Zamora, R.G.T.Zegers, D.Bazin, Y.Ayyad, S.Bacca, S.Beceiro Novo, B.A.Brown, A.Carls, J.Chen, M.Cortesi, M.DeNudt, G.Hagen, C.Hultquist, C.Maher, W.Mittig, F.Ndayisabye, S.Noji, S.J.Novario, J.Pereira, Z.Rahman, J.Schmitt, M.Serikow, L.J.Sun, J.Surbrook, N.Watwood, T.Wheeler β+ Gamow-Teller Strengths from Unstable 14O via the (d, 2He) Reaction in Inverse Kinematics NUCLEAR REACTIONS 2H(14O, 2He), E=105 MeV/nucleon; measured reaction products. 14O; deduced σ(θ), B(GT) or Gamow-Teller transition strength. Comparison with available data. The Coupled Cyclotron Facility at the National Superconducting Cyclotron Laboratory (NSCL), MSU.
doi: 10.1103/PhysRevLett.130.232301
2022SC13 Phys.Rev. C 106, 054323 (2022) J.Schmitt, G.B.King, R.G.T.Zegers, Y.Ayyad, D.Bazin, B.A.Brown, A.Carls, J.Chen, A.Davis, M.DeNudt, J.Droste, B.Gao, C.Hultquist, H.Iwasaki, S.Noji, S.Pastore, J.Pereira, M.Piarulli, H.Sakai, A.Stolz, R.Titus, R.B.Wiringa, J.C.Zamora Probing spin-isospin excitations in proton-rich nuclei via the 11C(p, n)11N reaction NUCLEAR REACTIONS 1H(11C, n), E=95 MeV/nucleon; measured reaction products, time-of-flight, En, In, (particle)n-coin, angular distribution; deduced σ(θ), σ(θ, E), cumulative Gamow-Teller transition strengths, B(GT) values to the 1/2- state at 0.73 MeV and the 3/2- state at 2.86 MeV in 11N. Multipole decomposition analysis. Comparison to shell-model calculations with wbp interaction and to experimental data on the 11B(n, p), (d, 2He), (t, 3He) reactions. Ursinus liquid hydrogen target coupled to Low Energy Neutron Detector Array (LENDA) and S800 spectrograph. 11C beam produced from Be(16O, X) reaction and purified with A1900 fragment separator at Coupled Cyclotron Facility (CCF) at the NSCL.
doi: 10.1103/PhysRevC.106.054323
2021CR01 Phys.Lett. B 816, 136210 (2021) F.C.L.Crespi, A.Bracco, E.G.Lanza, A.Tamii, N.Blasi, F.Camera, O.Wieland, N.Aoi, D.L.Balabanski, S.Bassauer, A.S.Brown, M.P.Carpenter, J.J.Carroll, M.Ciemala, A.Czeszumska, P.J.Davies, V.Derya, L.M.Donaldson, Y.D.Fang, H.Fujita, G.Gey, H.T.Ha, M.N.Harakeh, T.Hashimoto, N.Ichige, E.Ideguchi, A.Inoue, J.Isaak, C.Iwamoto, D.G.Jenkins, T.Klaus, N.Kobayashi, T.Koike, M.Krzysiek, M.K.Raju, M.Liu, A.Maj, L.Morris, P.von Neumann-Cosel, S.Noji, H.J.Ong, S.G.Pickstone, N.Pietralla, D.Savran, J.M.Schmitt, M.Spieker, G.Steinhilber, C.Sullivan, B.Wasilewska, M.Weinert, V.Werner, Y.Yamamoto, T.Yamamoto, R.G.T.Zegers, X.Zhou, S.Zhu, A.Zilges The structure of low-lying 1- states in 90, 94Zr from (α, α'γ) and (p, p'γ) reactions NUCLEAR REACTIONS 90,94Zr(p, p'γ), E=80 MeV; 90,94Zr(α, α'γ), E=130 MeV; measured reaction products, Eγ, Iγ; deduced ratio of the measured yields, dipole states σ, transition densities, low-lying dipole strength. The array CAGRA with HPGe detectors.
doi: 10.1016/j.physletb.2021.136210
2021GA01 Nucl.Instrum.Methods Phys.Res. A985, 164603 (2021) P.Gastis, G.Perdikakis, G.P.A.Berg, A.C.Dombos, A.Estrade, A.Falduto, M.Horoi, S.N.Liddick, S.Lipschutz, S.Lyons, F.Montes, A.Palmisano, J.Pereira, J.S.Randhawa, T.Redpath, M.Redshaw, J.Schmitt, J.R.Sheehan, M.K.Smith, P.Tsintari, A.C.C.Villari, K.Wang, R.G.T.Zegers A technique for the study of (p, n) reactions with unstable isotopes at energies relevant to astrophysics NUCLEAR REACTIONS 1H(40Ar, n), E=3.52 MeV/nucleon; measured reaction products, En, In; deduced σ. Comparison with available data.
doi: 10.1016/j.nima.2020.164603
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
2021MO25 Phys.Rev. C 104, 054323 (2021) L.Morris, D.G.Jenkins, M.N.Harakeh, J.Isaak, N.Kobayashi, A.Tamii, S.Adachi, P.Adsley, N.Aoi, A.Bracco, A.Brown, M.P.Carpenter, J.J.Carroll, S.Courtin, F.C.L.Crespi, P.J.Davies, G.Fruet, Y.D.Fang, H.Fujita, G.Gey, T.H.Hoang, N.Ichige, E.Ideguchi, A.Inoue, C.Iwamoto, T.Koike, M.Kumar Raju, M.L.Liu, D.Montanari, P.von Neumann-Cosel, S.Noji, H.J.Ong, D.Savran, J.M.Schmitt, C.Sullivan, B.Wasilewska, M.Weinert, V.Werner, Y.Yamamoto, R.G.T.Zegers, X.H.Zhou, S.Zhu Search for in-band transitions in the candidate superdeformed band in 28Si NUCLEAR REACTIONS 28Si(α, α'), E=130 MeV beam from K140 AVF cyclotron at the RCNP-Osaka; measured Eα, Iα using the Grand Raiden spectrometer, Eγ, Iγ, γγ-coin using CAGRA array of 12 HPGe clover detectors and four LaBr3 detectors. 28Si; deduced levels, J, π, bands; analyzed 4+ member in search of a superdeformed (SD) band, branching ratios of γ rays from the 4+ member, and B(E2); based on comparison of experimental B(E2) values with predicted B(E2) values from antisymmetrized molecular dynamics (AMD) calculations for a set of identified states in 28Si, strongly rejected hypothesized superdeformed band in this nuclide.
doi: 10.1103/PhysRevC.104.054323
2021ZA06 Phys.Rev. C 104, 014607 (2021) J.C.Zamora, C.Sullivan, R.G.T.Zegers, N.Aoi, L.Batail, D.Bazin, M.Carpenter, J.J.Carroll, Y.D.Fang, H.Fujita, U.Garg, G.Gey, C.J.Guess, M.N.Harakeh, T.H.Hoang, E.Hudson, N.Ichige, E.Ideguchi, A.Inoue, J.Isaak, C.Iwamoto, C.Kacir, N.Kobayashi, T.Koike, M.Kumar Raju, S.Lipschutz, M.Liu, P.von Neumann-Cosel, S.Noji, H.J.Ong, S.Peru, J.Pereira, J.Schmitt, A.Tamii, R.Titus, V.Werner, Y.Yamamoto, X.Zhou, S.Zhu Investigation of the isoscalar response of 24Mg to 6Li scattering NUCLEAR REACTIONS 24Mg(6Li, 6Li'), E=100 MeV/nucleon; measured scattered 6Li particles, σ(θ) using Grand Raiden spectrometer and two position-sensitive multiwire drift chambers (MWDCs) and three plastic scintillators for particle identification and reconstructing their trajectories at RCNP-Osaka University; deduced differential σ(E, Q), angular momentum transfers by fitting with multipole-decomposition analysis (MDA) using DWBA calculations for angular-momentum transfers. 24Mg; deduced energies, widths, EWSR, isoscaler giant monopole resonance (ISGMR), isoscaler giant monopole resonance (ISGDR), isoscaler giant quadrupole resonance (ISGQR) strength functions from Lorentzian fits to data. Comparison with antisymmetrized molecular dynamics (AMD) calculations, and with previous experimental data.
doi: 10.1103/PhysRevC.104.014607
2020GA02 Phys.Rev. C 101, 014308 (2020) B.Gao, R.G.T.Zegers, J.C.Zamora, D.Bazin, B.A.Brown, P.Bender, H.L.Crawford, J.Engel, A.Falduto, A.Gade, P.Gastis, T.Ginter, C.J.Guess, S.Lipschutz, A.O.Macchiavelli, K.Miki, E.M.Ney, B.Longfellow, S.Noji, J.Pereira, J.Schmitt, C.Sullivan, R.Titus, D.Weisshaar Gamow-Teller transitions to 93Zr via the 93Nb (t, 3He + γ) reaction at 115 MeV/u and its application to the stellar electron-capture rates NUCLEAR REACTIONS 93Nb(t, 3He), E=115 MeV/nucleon; measured 3He particle spectra, Eγ, double-differential σ(θ) using S800 spectrograph and GRETINA array at NSCL-MSU Coupled Cyclotron Facility. 93Zr; deduced levels, L-transfer, J, π, B(GT), electron capture (EC) rates in the late evolution of core-collapse supernovae, DWBA and multipole decomposition analysis (MDA). Comparison with QRPA and shell-model calculations.
doi: 10.1103/PhysRevC.101.014308
2020ZA05 Phys.Rev. C 101, 064609 (2020) J.C.Zamora, C.Sullivan, R.G.T.Zegers, N.Aoi, L.Batail, D.Bazin, M.Carpenter, J.J.Carroll, I.Deloncle, Y.D.Fang, H.Fujita, U.Garg, G.Gey, C.J.Guess, M.N.Harakeh, T.H.Hoang, E.Hudson, N.Ichige, E.Ideguchi, A.Inoue, J.Isaak, C.Iwamoto, C.Kacir, N.Kobayashi, T.Koike, M.Kumar Raju, S.Lipschutz, M.Liu, P.von Neumann-Cosel, S.Noji, H.J.Ong, S.Peru, J.Pereira, J.Schmitt, A.Tamii, R.Titus, V.Werner, Y.Yamamoto, X.Zhou, S.Zhu Reexamination of isoscalar giant resonances in 12C and 93Nb through 6Li scattering NUCLEAR REACTIONS 12C, 93Nb(6Li, 6Li'), E=100 MeV/nucleon; measured 6Li spectra, double-differential σ, and angular distributions for the isoscalar giant monopole resonances (ISGMRs) using the high-resolution Grand Raiden magnetic spectrometer at the RCNP-Osaka facility; deduced contribution of different angular momentum transfers to differential σ, energies, widths and E0 strength distribution of GMRs, EWSR, influence on GMRs due to nuclear structure. Angular distribution data fitted using multipole-decomposition analysis (MDA) and DWBA methods. Comparison with antisymmetrized molecular dynamics (AMD) calculations, and with previous experimental data.
doi: 10.1103/PhysRevC.101.064609
2019TI09 Phys.Rev. C 100, 045805 (2019) R.Titus, E.M.Ney, R.G.T.Zegers, D.Bazin, J.Belarge, P.C.Bender, B.A.Brown, C.M.Campbell, B.Elman, J.Engel, A.Gade, B.Gao, E.Kwan, S.Lipschutz, B.Longfellow, E.Lunderberg, T.Mijatovic, S.Noji, J.Pereira, J.Schmitt, C.Sullivan, D.Weisshaar, J.C.Zamora Constraints for stellar electron-capture rates on 86Kr via the 86Kr(t, 3He+γ)86Br reaction and the implications for core-collapse supernovae NUCLEAR REACTIONS 86Kr, 12C, 14N(t, 3He), E=115 MeV/nucleon, [tritons from 9Be(16O, X), E=150 MeV/nucleon primary reaction, and separated using A1900 fragment separator]; measured 3He spectra, Eγ, Iγ, γγ- and (3He)γ-coin, differential σ(θ) using S800 spectrograph for particles and GRETINA array for γ detection at the NSCL-MSU facility. Data from 12C 14N present as contaminants used for energy calibration. 86Br; deduced levels, L-transfers, Gamow-Teller strength distributions. 86Kr; calculated electron capture rates at T=10 GK using the deduced Gamow-Teller strength distributions. Comparison with shell-model and quasiparticle random-phase approximation (QRPA) calculations. Z=26-41, N=75-93; calculated electron capture rates for 78 nuclides near N=50 and Z=28 (see 2018Ti02) using quasiparticle random-phase approximation (QRPA), with Jπ assignments made for ground states of some nuclides using Gallagher-Moszkowski (GM) rule. Relevance to astrophysical simulations of core-collapse supernovae.
doi: 10.1103/PhysRevC.100.045805
2019WO01 Phys.Rev.Lett. 122, 232701 (2019) C.Wolf, C.Langer, F.Montes, J.Pereira, W.-J.Ong, T.Poxon-Pearson, S.Ahn, S.Ayoub, T.Baumann, D.Bazin, P.C.Bender, B.A.Brown, J.Browne, H.Crawford, R.H.Cyburt, E.Deleeuw, B.Elman, S.Fiebiger, A.Gade, P.Gastis, S.Lipschutz, B.Longfellow, Z.Meisel, F.M.Nunes, G.Perdikakis, R.Reifarth, W.A.Richter, H.Schatz, K.Schmidt, J.Schmitt, C.Sullivan, R.Titus, D.Weisshaar, P.J.Woods, J.C.Zamora, R.G.T.Zegers Constraining the Neutron Star Compactness: Extraction 23Al(p, γ) Reaction Rate for the rp Process NUCLEAR REACTIONS 2H(23Al, n), E=48 MeV/nucleon; measured reaction products, En, In, Eγ, Iγ; deduced J, π, σ, σ(θ), resonance widths and spectroscopic strengths, reaction rates.
doi: 10.1103/PhysRevLett.122.232701
2019ZA07 Phys.Rev. C 100, 032801(R) (2019) J.C.Zamora, R.G.T.Zegers, SamM.Austin, D.Bazin, B.A.Brown, P.C.Bender, H.L.Crawford, J.Engel, A.Falduto, A.Gade, P.Gastis, B.Gao, T.Ginter, C.J.Guess, S.Lipschutz, B.Longfellow, A.O.Macchiavelli, K.Miki, E.Ney, S.Noji, J.Pereira, J.Schmitt, C.Sullivan, R.Titus, D.Weisshaar Experimental constraint on stellar electron-capture rates from the 88Sr(t, 3He + γ) 88Rb reaction at 115 MeV/u NUCLEAR REACTIONS 88Sr(t, 3He)88Rb, E=115 MeV/nucleon, [secondary triton beam from 9Be(16O, X), E=150 MeV/nucleon using Coupled Cyclotron Facility and A1900 fragment separator at NSCL-MSU]; measured 3He ejectiles, angular distributions using S800 spectrograph, and Eγ, Iγ using GRETINA array; deduced double-differential cross sections, L-transfers from fitting of the σ(θ) distributions in the multipole decomposition analysis (MDA), two-dimensional histogram of γ-ray energy versus excitation energy of 88Rb. 88Sr; deduced B(GT) strength distributions, electron capture (EC) rates on 88Sr as a function of stellar density at a temperature of 10 GK. 86,87,88Rb; deduced transitions. 12C(t, 3He)12B, E=115 MeV/nucleon; measured 3He ejectiles, reaction used for calibration and for absolute measurement of the triton beam intensity. Comparison of experimental EC rates on 88Sr with shell model and QRPA calculations. Relevance to the late evolution of core-collapse supernovae.
doi: 10.1103/PhysRevC.100.032801
2018SU14 Phys.Rev. C 98, 015804 (2018) C.Sullivan, R.G.T.Zegers, S.Noji, SamM.Austin, J.Schmitt, N.Aoi, D.Bazin, M.Carpenter, J.J.Carroll, H.Fujita, U.Garg, G.Gey, C.J.Guess, T.H.Hoang, M.N.Harakeh, E.Hudson, N.Ichige, E.Ideguchi, A.Inoue, J.Isaak, C.Iwamoto, C.Kacir, T.Koike, N.Kobayashi, S.Lipschutz, M.Liu, P.von Neumann-Cosel, H.J.Ong, J.Pereira, M.Kumar Raju, A.Tamii, R.Titus, V.Werner, Y.Yamamoto, Y.D.Fang, J.C.Zamora, S.Zhu, X.Zhou The (6Li, 6Li* [3.56 MeV]) reaction at 100 MeV/u as a probe of Gamow-Teller transition strengths in the inelastic scattering channel NUCLEAR REACTIONS 12C(6Li, 6Li'), E=100 MeV/nucleon; measured Eγ, Iγ, 6Li scattered particles, (6Li)γ-coin, double differential σ(θ, Eex) using CAGRA detector array for γ detection, and Grand Raiden magnetic spectrometer for analysis of charged particles at RCNP-Osaka; deduced Doppler-corrected (6Li)γ-coin spectrum, Gamow-Teller strengths, and isovector spin-transfer response in inelastic reaction channel by tagging the reaction with the 3.56-MeV γ-ray from the excited state of 6Li. 24Mg, 93Nb(6Li, 6Li'), E=100 MeV/nucleon; reactions used for calibration, also it was not possible to isolate the isovector spin transfer excitations in the inelastic channel.
doi: 10.1103/PhysRevC.98.015804
2009EL11 Nature(London) 461, 507 (2009) J.Elsig, J.Schmitt, D.Leuenberger, R.Schneider, M.Eyer, M.Leuenberger, F.Joos, H.Fischer, T.F.Stocker Stable isotope constraints on Holocene carbon cycle changes from an Antarctic ice core
doi: 10.1038/nature08393
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