NSR Query Results
Output year order : Descending NSR database version of March 18, 2024. Search: Author = J.Yurkon Found 35 matches. 2023BO18 Phys.Rev. C 108, 034604 (2023) M.Bowry, O.B.Tarasov, J.S.Berryman, V.Bader, D.Bazin, T.Chupp, H.L.Crawford, A.Gade, E.Lunderberg, A.Ratkiewicz, F.Recchia, B.M.Sherrill, D.Smalley, A.Stolz, S.R.Stroberg, D.Weisshaar, S.Williams, K.Wimmer, J.Yurkon Abrasion-fission reactions at intermediate energies
doi: 10.1103/PhysRevC.108.034604
2021KA39 Phys.Lett. B 822, 136681 (2021) M.Kaneko, T.Murakami, T.Isobe, M.Kurata-Nishimura, A.Ono, N.Ikeno, J.Barney, G.Cerizza, J.Estee, G.Jhang, J.W.Lee, W.G.Lynch, C.Santamaria, C.Y.Tsang, M.B.Tsang, R.Wang, D.S.Ahn, L.Atar, T.Aumann, H.Baba, K.Boretzky, J.Brzychczyk, N.Chiga, N.Fukuda, I.Gasparic, B.Hong, A.Horvat, T.Ichihara, K.Ieki, N.Inabe, Y.J.Kim, T.Kobayashi, Y.Kondo, P.Lasko, H.S.Lee, Y.Leifels, J.Lukasik, J.Manfredi, A.B.McIntosh, P.Morfouace, T.Nakamura, N.Nakatsuka, S.Nishimura, R.Olsen, H.Otsu, P.Pawlowski, K.Pelczar, D.Rossi, H.Sakurai, H.Sato, H.Scheit, R.Shane, Y.Shimizu, H.Simon, T.Sumikama, D.Suzuki, H.Suzuki, H.Takeda, S.Tangwancharoen, Y.Togano, H.Tornqvist, Z.Xiao, S.J.Yennello, J.Yurkon, Y.Zhang Rapidity distributions of Z=1 isotopes and the nuclear symmetry energy from Sn+Sn collisions with radioactive beams at 270 MeV/nucleon NUCLEAR REACTIONS 124Sn(132Sn, X), 112Sn(108Sn, X), E=270 MeV/nucleon; measured reaction products. 1,2,3H; deduced rapidity distributions of hydrogen isotopes emitted from central collisions. Comparison with antisymmetrized molecular dynamics (AMD) calculations. RIKEN-RIBF facility.
doi: 10.1016/j.physletb.2021.136681
2020ME06 Phys.Rev. C 101, 052801 (2020) Z.Meisel, S.George, S.Ahn, D.Bazin, B.A.Brown, J.Browne, J.F.Carpino, H.Chung, R.H.Cyburt, A.Estrade, M.Famiano, A.Gade, C.Langer, M.Matos, W.Mittig, F.Montes, D.J.Morrissey, J.Pereira, H.Schatz, J.Schatz, M.Scott, D.Shapira, K.Smith, J.Stevens, W.Tan, O.Tarasov, S.Towers, K.Wimmer, J.R.Winkelbauer, J.Yurkon, R.G.T.Zegers Nuclear mass measurements map the structure of atomic nuclei and accreting neutron stars ATOMIC MASSES 48,49Ar, 52,53,54,55,56,57Sc, 56,57,58,59Ti, 57,58,59,60,61,62V, 64,65Cr, 67,68Mn, 67,68,69,70Fe; measured time of flight, ΔE, Bπ, and mass excess using the A1900 fragment separator and the S800 spectrograph for particle identification at the NSCL-MSU facility; deduced S(2n), and Dn(Z, A)=S(n)(Z, A+1)-S(n)(Z, A), related to pairing gap. Comparison with available evaluated data in AME2016, and with shell model calculations using GX1A Hamiltonian for Sc isotopes. Discussion of upper-Z limit for N=34 subshell closure and lower-Z limit for N=40 subshell, and impact on electron-capture cooling in neutron star crusts. Isotopes produced in 9Be(82Se, X), E=140 MeV/nucleon reaction.
doi: 10.1103/PhysRevC.101.052801
2018BR04 Phys.Lett. B 778, 155 (2018) J.Bradt, Y.Ayyad, D.Bazin, W.Mittig, T.Ahn, S.Beceiro Novo, B.A.Brown, L.Carpenter, M.Cortesi, M.P.Kuchera, W.G.Lynch, S.Rost, N.Watwood, J.Yurkon, J.Barney, U.Datta, J.Estee, A.Gillibert, J.Manfredi, P.Morfouace, D.Perez-Loureiro, E.Pollacco, J.Sammut, S.Sweany Study of spectroscopic factors at N = 29 using isobaric analogue resonances in inverse kinematics NUCLEAR REACTIONS 1H(46Ar, X), E<140 MeV/nucleon; measured reaction products, Ep, Ip. 46,47Ar, 47K; deduced energy levels, J, π, resonance widths. Comparison with R-matrix calculations.
doi: 10.1016/j.physletb.2018.01.015
2018WA06 Phys.Rev. C 97, 021602 (2018) A.Wakhle, K.Hammerton, Z.Kohley, D.J.Morrissey, K.Stiefel, J.Yurkon, J.Walshe, K.J.Cook, M.Dasgupta, D.J.Hinde, D.J.Jeung, E.Prasad, D.C.Rafferty, C.Simenel, E.C.Simpson, K.Vo-Phuoc, J.King, W.Loveland, R.Yanez Capture cross sections for the synthesis of new heavy nuclei using radioactive beams NUCLEAR REACTIONS 181Ta(39K, X), E=180-210 MeV; 181Ta(46K, X), E=190-215 MeV; measured time of flight and relative position of fission fragments, capture-fission σ(E) from a binary event using 14UD Heavy-ion accelerator facility of Australian National University (ANU), and Coupled Cyclotron Facility (CCF) projectile fragmentation facility at NSCL-MSU, and the Coincident Fission Fragment Detector (CFFD) at the ReA3 facility at NSCL; deduced velocity vectors of the coincident fragments, masses and angular distributions of fission fragments. Comparison with several phenomenological models and microscopic time-dependent Hartree-Fock calculations. Discussed implications for the synthesis of heavy nuclei at radioactive beam facilities. 197Au(31Al, X), E(cm), 248Cm(26Mg, X), E(cm)=110-160 MeV; 248Cm(48Ca, X), E(cm)=195-230 MeV; 154Sm(31Al, X), E(cm)=125-190 MeV; 238U(48Ca, X), E(cm)=185-235 MeV; 238U(64Ni, X), E(cm)=260-300 MeV; compiled theoretical and experimental values of capture fission σ(E). Comparison with several theoretical results.
doi: 10.1103/PhysRevC.97.021602
2016ME07 Phys.Rev. C 93, 035805 (2016) Z.Meisel, S.George, S.Ahn, D.Bazin, B.A.Brown, J.Browne, J.F.Carpino, H.Chung, R.H.Cyburt, A.Estrade, M.Famiano, A.Gade, C.Langer, M.Matos, W.Mittig, F.Montes, D.J.Morrissey, J.Pereira, H.Schatz, J.Schatz, M.Scott, D.Shapira, K.Sieja, K.Smith, J.Stevens, W.Tan, O.Tarasov, S.Towers, K.Wimmer, J.R.Winkelbauer, J.Yurkon, R.G.T.Zegers Time-of-flight mass measurements of neutron-rich chromium isotopes up to N=40 and implications for the accreted neutron star crust ATOMIC MASSES 59,60,61,62,63,64Cr; measured mass excesses by time-of-flight (TOF) method using 9Be(82Se, X), E=140 MeV/nucleon for production of Si to Zn isotopes and A1900 fragment separator and S800 spectrograph for fragment separation and analysis at NSCL-MSU. TOF versus mass contour plot obtained for Ar (A=44-49), K (A=47-52), Ca (A=49-55), Sc (A=52-58), Ti (A=54-60), V (A=57-63), Cr (A=59-66), Mn (A=62-70) and Fe (A=64-71) isotopes. Analyzed S(2n) trends and compared to AME-2012. Comparison with state-of-the-art shell-model calculations using modified Lenzi-Nowacki-Poves-Sieja interaction in the fp shell, and with AME-2012 data. Mass of 64Cr used in accreted neutron star crust network calculations, and deduced reduction in strength depth of electron-capture heating from A=64 isobaric chain. NUCLEAR REACTIONS 9Be(82Se, X), E=140 MeV/nucleon; measured time-of-flight, energy loss, fragment yields of 150 isotopes from Si to Zn using A1900 fragment separator and S800 spectrograph at NSCL-MSU.
doi: 10.1103/PhysRevC.93.035805
2015ME01 Phys.Rev.Lett. 114, 022501 (2015) Z.Meisel, S.George, S.Ahn, J.Browne, D.Bazin, B.A.Brown, J.F.Carpino, H.Chung, R.H.Cyburt, A.Estrade, M.Famiano, A.Gade, C.Langer, M.Matos, W.Mittig, F.Montes, D.J.Morrissey, J.Pereira, H.Schatz, J.Schatz, M.Scott, D.Shapira, K.Smith, J.Stevens, W.Tan, O.Tarasov, S.Towers, K.Wimmer, J.R.Winkelbauer, J.Yurkon, R.G.T.Zegers Mass Measurements Demonstrate a Strong N=28 Shell Gap in Argon ATOMIC MASSES 48,49Ar; measured time of flight; deduced masses, N=28 closed shell, problems of shell model calculations.
doi: 10.1103/PhysRevLett.114.022501
2015ME08 Phys.Rev.Lett. 115, 162501 (2015) Z.Meisel, S.George, S.Ahn, D.Bazin, B.A.Brown, J.Browne, J.F.Carpino, H.Chung, A.L.Cole, R.H.Cyburt, A.Estrade, M.Famiano, A.Gade, C.Langer, M.Matos, W.Mittig, F.Montes, D.J.Morrissey, J.Pereira, H.Schatz, J.Schatz, M.Scott, D.Shapira, K.Smith, J.Stevens, W.Tan, O.Tarasov, S.Towers, K.Wimmer, J.R.Winkelbauer, J.Yurkon, R.G.T.Zegers Mass Measurement of 56Sc Reveals a Small A=56 Odd-Even Mass Staggering, Implying a Cooler Accreted Neutron Star Crust ATOMIC MASSES 52,53,54,55,56,57Sc; measured rigidity-corrected time-of-flight distributions; deduced atomic mass excesses. Comparison with AME 2012, theoretical models.
doi: 10.1103/PhysRevLett.115.162501
2011GU14 Phys.Rev. C 83, 064318 (2011) C.J.Guess, T.Adachi, H.Akimune, A.Algora, S.M.Austin, D.Bazin, B.A.Brown, C.Caesar, J.M.Deaven, H.Ejiri, E.Estevez, D.Fang, A.Faessler, D.Frekers, H.Fujita, Y.Fujita, M.Fujiwara, G.F.Grinyer, M.N.Harakeh, K.Hatanaka, C.Herlitzius, K.Hirota, G.W.Hitt, D.Ishikawa, H.Matsubara, R.Meharchand, F.Molina, H.Okamura, H.J.Ong, G.Perdikakis, V.Rodin, B.Rubio, Y.Shimbara, G.Susoy, T.Suzuki, A.Tamii, J.H.Thies, C.Tur, N.Verhanovitz, M.Yosoi, J.Yurkon, R.G.T.Zegers, J.Zenihiro The 150Nd(3He, t) and 150Sm(t, 3He) reactions with applications to ββ decay of 150Nd NUCLEAR REACTIONS 150Nd(3He, t), E=140 MeV/nucleon; 150Sm(t, 3He), E=115 MeV/nucleon; measured triton and 3He spectra, excitation energy spectra, differential cross sections, σ(θ) 150Pm; deduced B(GT) strengths; isovector spin-flip giant monopole resonance (IVSGMR). Grand Raiden Spectrometer for (3He, t) and S-800 spectrometer for (t, 3He). Comparison with Quasi-Particle Random Phase Approximation (QRPA) calculations. Application to double β decay of 150Nd. RADIOACTIVITY 150Nd(2β-); calculated matrix elements for 0νββ and 2νββ decay modes using QRPA calculations. Comparison with experimental data.
doi: 10.1103/PhysRevC.83.064318
2010ZE03 Phys.Rev.Lett. 104, 212504 (2010) R.G.T.Zegers, R.Meharchand, Y.Shimbara, S.M.Austin, D.Bazin, B.A.Brown, C.Aa.Diget, A.Gade, C.J.Guess, M.Hausmann, G.W.Hitt, M.E.Howard, M.King, D.Miller, S.Noji, A.Signoracci, K.Starosta, C.Tur, C.Vaman, P.Voss, D.Weisshaar, J.Yurkon 34P(7Li, 7Be+γ) Reaction at 100A MeV in Inverse Kinematics NUCLEAR REACTIONS 34P(7Li, γ7Be)34Si, E=100 MeV/nucleon; measured Eγ, Iγ, γ-particle coin.; deduced σ(θ), β+ Gamow-Teller transition strength distribution. Comparison with shell model calculations.
doi: 10.1103/PhysRevLett.104.212504
2002DA15 Nucl.Phys. A701, 14c (2002) B.Davids, D.W.Anthony, T.Aumann, S.M.Austin, T.Baumann, D.Bazin, R.R.C.Clement, P.A.Lofy, T.Nakamura, B.M.Sherrill, J.Yurkon, C.N.Davids, H.Esbensen A Kinematically Complete Measurement of the Coulomb Dissociation of 8B NUCLEAR REACTIONS Pb(8B, p7Be), E=83 MeV/nucleon; measured particle spectra; deduced Coulomb dissociation σ. 7Be(p, γ), E=low; deduced astrophysical S-factor. Kinematically complete measurement.
doi: 10.1016/S0375-9474(01)01538-X
2001CA37 Phys.Rev. C64, 025802 (2001) J.A.Caggiano, D.Bazin, W.Benenson, B.Davids, R.Ibbotson, H.Scheit, B.M.Sherrill, M.Steiner, J.Yurkon, A.F.Zeller, B.Blank, M.Chartier, J.Greene, J.A.Nolen, Jr., A.H.Wuosmaa, M.Bhattacharya, A.Garcia, M.Wiescher Spectroscopy of 23Al and 27P using the (7Li, 8He) Reaction and the Implications for 22Na and 26Al Nucleosynthesis in Explosive Hydrogen Burning NUCLEAR REACTIONS 9Be, 10B, 24Mg, 28Si(7Li, 8He), E=50.1 MeV/nucleon; measured particle spectra. 23Al, 27P deduced level energies. 22Mg, 26Si(p, γ), E=low; deduced stellar reaction rates. ATOMIC MASSES 23Al, 27P; measured ground-state mass excess.
doi: 10.1103/PhysRevC.64.025802
2001DA03 Phys.Rev.Lett. 86, 2750 (2001) B.Davids, D.W.Anthony, T.Aumann, S.M.Austin, T.Baumann, D.Bazin, R.R.C.Clement, C.N.Davids, H.Esbensen, P.A.Lofy, T.Nakamura, B.M.Sherrill, J.Yurkon S17(0) Determined from the Coulomb Breakup of 83 MeV/Nucleon 8B NUCLEAR REACTIONS Pb(8B, p7Be), E=83 MeV/nucleon; measured particle spectra, σ(E, θ). 7Be(p, γ), E=low; deduced astrophysical S-factor. Kinematically complete measurement, first-order perturbation theory analysis.
doi: 10.1103/PhysRevLett.86.2750
2001EN05 Nucl.Phys. A690, 235c (2001) J.Enders, D.W.Anthony, T.Aumann, A.Bauer, T.Baumann, D.Bazin, Y.Blumenfeld, B.A.Brown, T.Glasmacher, P.G.Hansen, R.W.Ibbotson, P.A.Lofy, V.Maddalena, K.L.Miller, T.Nakamura, A.Navin, B.V.Pritychenko, B.M.Sherrill, E.J.Spears, M.Steiner, J.A.Tostevin, A.Wagner, J.Yurkon Study of 34, 35Si and 37S with Single-Neutron Removal Reactions NUCLEAR REACTIONS 9Be(34Si, 33Si), (35Si, 34Si), (37S, 36S), E ≈ 60 MeV/nucleon; measured parallel momentum spectra, Eγ, Iγ, σ(E), deduced role of intruder configurations.
doi: 10.1016/S0375-9474(01)00948-4
2001MA08 Phys.Rev. C63, 024613 (2001) V.Maddalena, T.Aumann, D.Bazin, B.A.Brown, J.A.Caggiano, B.Davids, T.Glasmacher, P.G.Hansen, R.W.Ibbotson, A.Navin, B.V.Pritychenko, H.Scheit, B.M.Sherrill, M.Steiner, J.A.Tostevin, J.Yurkon Single-Neutron Knockout Reactions: Application to the spectroscopy of 16, 17, 19C NUCLEAR REACTIONS 9Be(16C, n15C), (17C, n16C), (19C, n18C), E ≈ 60 MeV/nucleon; measured Eγ, Iγ, σ(E), momentum distributions. 16,17,19C deduced levels, J, π, spectroscopic factors. Secondary beams from 22Ne fragmentation. Comparisons with model predictions.
doi: 10.1103/PhysRevC.63.024613
2001MA21 Nucl.Phys. A682, 332c (2001) V.Maddalena, T.Aumann, D.Bazin, B.A.Brown, J.A.Caggiano, B.Davids, T.Glasmacher, P.G.Hansen, R.W.Ibbotson, A.Navin, B.V.Pritychenko, H.Scheit, B.M.Sherrill, M.Steiner, J.A.Tostevin, J.Yurkon One-Nucleon Knockout Reactions: The test case 15C and the single-particle structure of 16, 17, 19C NUCLEAR REACTIONS 9Be(15C, n14C), (16C, n15C), (17C, n16C), (19C, n18C), E ≈ 60 MeV/nucleon; measured longitudinal momentum distributions, σ(E). 16,17,19C deduced single-particle structure.
doi: 10.1016/S0375-9474(00)00657-6
2001NA19 Nucl.Phys. A687, 97c (2001) T.Nakamura, T.Aumann, D.Bazin, Y.Blumenfeld, B.A.Brown, J.Caggiano, R.Clement, T.Glasmacher, P.A.Lofy, A.Navin, B.V.Pritychenko, B.M.Sherrill, J.Yurkon Structure of the Halo Nucleus 6He Studied via the 6Li(t, 3He)6He Reaction NUCLEAR REACTIONS 6Li(t, 3He), E=336 MeV; measured σ(θ) vs excitation energy, resonance energy, widths and spectroscopic factors. DWBA calculations.
doi: 10.1016/S0375-9474(01)00607-8
2000NA23 Phys.Rev.Lett. 85, 266 (2000) A.Navin, D.W.Anthony, T.Aumann, T.Baumann, D.Bazin, Y.Blumenfeld, B.A.Brown, T.Glasmacher, P.G.Hansen, R.W.Ibbotson, P.A.Lofy, V.Maddalena, K.Miller, T.Nakamura, B.V.Pritychenko, B.M.Sherrill, E.Spears, M.Steiner, J.A.Tostevin, J.Yurkon, A.Wagner Direct Evidence for the Breakdown of the N = 8 Shell Closure in 12Be NUCLEAR REACTIONS 9Be(12Be, 11BeX), E=78 MeV/nucleon; measured σ(E, θ), longitudinal momentum distribution, γ spectrum. 11Be levels deduced spectroscopic factors, no N=8 shell closure. S800 spectrograph.
doi: 10.1103/PhysRevLett.85.266
2000NA35 Phys.Lett. 493B, 209 (2000) T.Nakamura, T.Aumann, D.Bazin, Y.Blumenfeld, B.A.Brown, J.Caggiano, R.Clement, T.Glasmacher, P.A.Lofy, A.Navin, B.V.Pritychenko, B.M.Sherrill, J.Yurkon Structure of the Weakly-Bound Nucleus 6He Studied via the 6Li(t, 3He)6He Reaction NUCLEAR REACTIONS 6Li(t, 3He), E=336 MeV; measured σ(E, θ). 6He deduced excited states features. DWBA analysis, shell model calculations.
doi: 10.1016/S0370-2693(00)01146-1
1999AH07 Phys.Rev. C60, 064601 (1999) I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, C.M.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, A.L.Hallin, Th.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.M.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, A.R.Young, J.E.Yurkon Positron-Electron Pairs Produced in Heavy-Ion Collisions NUCLEAR REACTIONS 232Th(238U, X), E=5.95 MeV/nucleon; 181Ta(238U, X), E=5.95, 6.1, 6.3 MeV/nucleon; measured positron, electron spectra, multiplicities, e-e+-coin, angular correlation; deduced no sharp structure in sum-energy spectra. APEX spectrometer.
doi: 10.1103/PhysRevC.60.064601
1999CA48 Phys.Rev. C60, 064322 (1999) J.A.Caggiano, D.Bazin, W.Benenson, B.Davids, B.M.Sherrill, M.Steiner, J.Yurkon, A.F.Zeller, B.Blank Spectroscopy of the 10Li Nucleus NUCLEAR REACTIONS 9Be, 12C(9Be, 8B), (9Be, 11C), E=40.1 MeV/nucleon; measured particle spectra, σ(θ). 10Li deduced low-lying resonance energy, width. S800 spectrograph.
doi: 10.1103/PhysRevC.60.064322
1998DA14 Phys.Rev.Lett. 81, 2209 (1998) B.Davids, D.W.Anthony, S.M.Austin, D.Bazin, B.Blank, J.A.Caggiano, M.Chartier, H.Esbensen, P.Hui, C.F.Powell, H.Scheit, B.M.Sherrill, M.Steiner, P.Thirolf, J.Yurkon, A.Zeller Measurement of E2 Transitions in the Coulomb Dissociation of 8B NUCLEAR REACTIONS 208Pb(8B, p7Be), E=44, 81 MeV/nucleon; measured fragments longitudinal momentum distributions; deduced relative E2 transition strength.
doi: 10.1103/PhysRevLett.81.2209
1998NA34 Phys.Rev.Lett. 81, 5089 (1998) A.Navin, D.Bazin, B.A.Brown, B.Davids, G.Gervais, T.Glasmacher, K.Govaert, P.G.Hansen, M.Hellstrom, R.W.Ibbotson, V.Maddalena, B.Pritychenko, H.Scheit, B.M.Sherrill, M.Steiner, J.A.Tostevin, J.Yurkon Spectroscopy of Radioactive Beams from Single-Nucleon Knockout Reactions: Application to the sd shell nuclei 25Al and 26, 27, 28P NUCLEAR REACTIONS 9Be(25Al, p24Mg), (26P, p25Si), (27P, p26Si), (28P, p27Si), E ≈ 65 MeV/nucleon; measured Eγ, Iγ, (residue)γ-coin, momentum distributions following one-proton removal; deduced σ. 25Al, 26,27,28P deduced ground-state characteristics, halo features. Radioactive beams from fragmentation of 36Ar primary beam.
doi: 10.1103/PhysRevLett.81.5089
1997AH01 Phys.Rev.Lett. 78, 618 (1997) I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, A.L.Hallin, T.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.J.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.R.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, G.Xu, A.Young, J.E.Yurkon, and the APEX Collaboration Search for Monoenergetic Positron Emission from Heavy-Ion Collisions at Coulomb-Barrier Energies NUCLEAR REACTIONS 181Ta(238U, X), E=5.95-6.3 MeV/nucleon; 232Th(238U, X), E=5.95 MeV/nucleon; measured positron energy spectra; deduced no structure.
doi: 10.1103/PhysRevLett.78.618
1997AH04 Phys.Rev. C55, R2755 (1997) I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.A.Chishti, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, J.S.Greenberg, S.B.Gazes, A.L.Hallin, T.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.J.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, G.Xu, A.Young, J.E.Yurkon, and the APEX Collaboration Internal Pair Conversion in Heavy Nuclei NUCLEAR REACTIONS 206Pb(206Pb, X), E=5.90 MeV/nucleon; measured e+e--sum energy spectra, Doppler corrected Eγ; deduced internal pair conversion to gamma branching ratio. 232Th(208Pb, X), E=5.80 MeV/nucleon; 238U(208Pb, X), E=5.80 MeV/nucleon; 181Ta(238U, X), E=5.95 MeV/nucleon; 232Th(238U, X), E=5.90 MeV/nucleon; measured e+e--sum energy, Doppler corrected Eγ; deduced no discrete lines evidence in e+e- spectra. 238U deduced new levels evidence.
doi: 10.1103/PhysRevC.55.R2755
1997AH05 Z.Phys. A358, 235 (1997) I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, P.Chowdhury, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, A.L.Hallin, T.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.J.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, A.Young, J.E.Yurkon, and the APEX Collaboration The Positron-Electron Peak Puzzle: Results from APEX NUCLEAR REACTIONS 232Th(238U, X), E=5.78-5.95 MeV/nucleon; 181Ta(238U, X), E=5.79-6.3 MeV/nucleon; measured total (e+)(heavy-ion)-, (e+e-)(heavy-ion)-coin events number; deduced very low light neutral particle production upper limits.
doi: 10.1007/s002180050316
1996AH05 Acta Phys.Pol. B27, 387 (1996) I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, P.Chowdhury, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.Gazes, A.L.Hallin, T.Happ, N.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.J.Mercer, D.Mikolas, A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, A.Young, J.E.Yurkon, and the APEX Collaboration The Positron Peak Puzzle - Recent Results from APEX NUCLEAR REACTIONS 232Th(238U, X), E=5.95 MeV/nucleon; 181Ta(238U, X), E=5.96-6.3 MeV/nucleon; 206Pb(206Pb, X), E not given; analyzed e+e--sum energy spectra. 232Th, 238U(208Pb, X), E=5.8 MeV/nucleon; 232Th, 181Ta(238U, X), E=5.95 MeV/nucleon; 206Pb(206Pb, X), E=5.9 MeV/nucleon; analyzed Doppler reconstructed γ spectra; deduced limits on 1.78 MeV 238U transition possible contribution to (heavy ion)γ-coin.
1996AH07 Nucl.Instrum.Methods Phys.Res. A370, 539 (1996) I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, P.Chowdhury, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, J.S.Greenberg, J.P.Greene, A.L.Hallin, Th.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.M.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, G.Xu, A.R.Young, J.E.Yurkon A Solenoidal Spectrometer for Positron-Electron Pairs Produced in Heavy-Ion Collisions RADIOACTIVITY 85Sr(EC); 113Sn(EC); 203Hg(β-); measured electron spectra; deduced apparatus response, efficiency. New solenoidal spectrometer. NUCLEAR REACTIONS 181Ta(238U, X), E=6.1 MeV/nucleon; measured γ-, positron energy spectra. New solenoidal spectrometer.
doi: 10.1016/0168-9002(95)00829-2
1995AH01 Nucl.Phys. A583, 247c (1995) I.Ahmad, S.M.Austin, B.B.Back, D.Bazin, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, P.Chowdhury, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, J.S.Greenberg, A.L.Hallin, T.Happ, J.Last, N.Kaloskamis, E.Kashy, W.Kutschera, C.J.Lister, M.Liu, M.R.Maier, D.Mercer, A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, G.Xu, A.Young, J.E.Yurkon Positron Production in Heavy Ion Collisions: Current status of the problem NUCLEAR REACTIONS 181Ta(238U, X), E=5.9-6.3 MeV/nucleon; compiled, analyzed, reviewed electron, positron production data.
doi: 10.1016/0375-9474(94)00667-C
1995AH06 Phys.Rev.Lett. 75, 2658 (1995) I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, P.Chowdhury, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, A.L.Hallin, T.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.J.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, G.Xu, A.Young, J.E.Yurkon, and the APEX Collaboration Search for Narrow Sum-Energy Lines in Electron-Positron Pair Emission from Heavy-Ion Collisions Near the Coulomb Barrier NUCLEAR REACTIONS 181Ta(238U, X), E=5.95-6.3 MeV/nucleon; 232Th(238U, X), E=5.95 MeV/nucleon; measured pair emission sum spectra; deduced no sharp lines evidence, neutral particle isolated decay related features.
doi: 10.1103/PhysRevLett.75.2658
1994ME24 Nucl.Instrum.Methods Phys.Res. A350, 491 (1994) D.J.Mercer, D.Mikolas, J.Yurkon, S.M.Austin, D.Bazin, S.Gaff, E.Kashy, D.Kataria, J.S.Winfield, R.R.Betts, D.J.Henderson, A.L.Hallin, M.Liu, F.L.H.Wolfs A Large Solid-Angle Array for Heavy Ions from APEX NUCLEAR REACTIONS 58Ni(58Ni, 58Ni), E=200 MeV; measured σ(θ). 181Ta(238U, X), E=1.45 GeV; measured fragment tof, mass spectra. Large solid-angle array of low pressure multi-wire proportional counters. Other reactions studied.
doi: 10.1016/0168-9002(94)91249-1
1993CH10 Phys.Rev. C47, 1462 (1993) Y.Chen, E.Kashy, D.Bazin, W.Benenson, D.J.Morrissey, N.A.Orr, B.M.Sherrill, J.A.Winger, B.Young, J.Yurkon Half-Life of 32Si RADIOACTIVITY 32Si(β-) [from 9Be(40Ar, X), E=65 MeV/nucleon]; measured specific activity; deduced T1/2. Two independent measurements.
doi: 10.1103/PhysRevC.47.1462
1989KA15 Phys.Rev. C40, R1 (1989) E.Kashy, W.Bauer, Y.Chen, A.Galonsky, J.Gaudiello, M.Maier, D.J.Morrissey, R.A.Pelak, M.B.Tsang, J.Yurkon Search for Neutron Emission from Deuterium-Loaded Palladium NUCLEAR REACTIONS 2H(d, n), E=low; measured possible neutron emission upper limit. Heavy water electrolysis, palladium cathode.
doi: 10.1103/PhysRevC.40.R1
1985HA19 Phys.Rev. C32, 145 (1985) B.E.Hasselquist, G.M.Crawley, B.V.Jacak, Z.M.Koenig, G.D.Westfall, J.E.Yurkon, R.S.Tickle, J.P.Dufour, T.J.M.Symons Light-Particle-Complex-Fragment Coincidence Cross Sections from Intermediate Energy Nucleus-Nucleus Collisions NUCLEAR REACTIONS 197Au, 27Al(12C, dX), (12C, tX), E=30 MeV/nucleon; measured inclusive σ(θp, Ep), σ(θd, Ed), σ(θt, Et). 197Au(40Ar, pX), (40Ar, dX), (40Ar, tX), (40Ar, 3HeX), (40Ar, αX), E=92 MeV/nucleon; measured inclusive σ(θp, Ep), σ(θd, Ed), σ(θt, Et), σ(θ(3He), E(3He)), σ(θα, Eα). Moving source model.
doi: 10.1103/PhysRevC.32.145
1985WE14 Nucl.Instrum.Methods 238, 347 (1985) G.D.Westfall, J.E.Yurkon, J.Van Der Plicht, Z.M.Koenig, B.V.Jacak, R.Fox, G.M.Crawley, M.R.Maier, B.E.Hasselquist, R.S.Tickle, D.Horn A Logarithmic Detection System Suitable for a 4π Array NUCLEAR REACTIONS 197Au(14N, X), E=35 MeV/nucleon; 58Ni(35Cl, X), E=230 MeV; 12C(12C, X), E=30 MeV/nucleon; measured fragment, charge spectra.
doi: 10.1016/0168-9002(85)90472-3
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