NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = M.R.Dunlop Found 14 matches. 2023YA17 Phys.Rev. C 107, 064309 (2023) D.Yates, R.Krucken, I.Dillmann, P.E.Garrett, B.Olaizola, V.Vedia, F.A.Ali, C.Andreoiu, W.Ashfield, G.C.Ball, Z.Beadle, N.Bernier, S.S.Bhattacharjee, H.Bidaman, V.Bildstein, D.Bishop, M.Bowry, C.Burbadge, R.Caballero-Folch, D.Z.Chaney, D.C.Cross, A.Diaz Varela, M.R.Dunlop, R.Dunlop, L.J.Evitts, F.H.Garcia, A.B.Garnsworthy, S.Georges, S.A.Gillespie, G.Hackman, J.Henderson, B.Jigmeddorj, J.Lassen, R.Li, B.K.Luna, A.D.MacLean, C.R.Natzke, C.M.Petrache, A.J.Radich, M.M.Rajabali, P.H.Regan, Y.Saito, J.Smallcombe, J.K.Smith, M.Spieker, C.E.Svensson, A.Teigelhofer, K.Whitmore, T.Zidar Decay spectroscopy of 160Eu: Quasiparticle configurations of excited states and structure of Kπ = 4+ bandheads in 160Gd RADIOACTIVITY 160,160mEu(β-)[from U(p, X), E=480 MeV]; measured Eγ, Iγ, γγ-coin, γγ(θ) βγγ-coin; deduced logft, β-feeding intensities. 160Eu; deduced J, π of the b-decaying isomeric states with preliminary J=1 and J=5 assignments, configurations. 160Gd; deduced levels, J, π, transition intensities, δ, B(M1), B(E2), T1/2 of the excited states populated in 160Eu decay, band configurations. Comparison to previous experimental results. GRIFFIN spectrometer consisting of 15 HPGe clover detectors and surrounded by 7 LaBr3(Ce) detectors for lifetime measurements at the TRIUMF-ISAC facility.
doi: 10.1103/PhysRevC.107.064309
2022SH26 Eur.Phys.J. A 58, 83 (2022) S.Sharma, G.F.Grinyer, G.C.Ball, J.R.Leslie, C.E.Svensson, F.A.Ali, C.Andreoiu, N.Bernier, S.S.Bhattacharjee, V.Bildstein, C.Burbadge, R.Caballero-Folch, R.Coleman, A.Diaz Varela, M.R.Dunlop, R.Dunlop, A.B.Garnsworthy, E.Gyabeng Fuakye, G.M.Huber, B.Jigmeddorj, K.Kapoor, A.T.Laffoley, K.G.Leach, J.Long, A.D.MacLean, C.R.Natzke, B.Olaizola, A.J.Radich, N.Saei, J.T.Smallcombe, A.Talebitaher, K.Whitmore, T.Zidar High-precision half-life determination of 14O via direct β counting RADIOACTIVITY 14O(β+) [from Si(p, X), E=480 MeV]; measured decay products, Eβ, Iβ; deduced log ft, T1/2, the new world average based on several measurements. The Isotope Separator and Accelerator (ISAC) facility at TRIUMF.
doi: 10.1140/epja/s10050-022-00730-w
2021GA10 Phys.Rev. C 103, 024310 (2021) F.H.Garcia, C.Andreoiu, G.C.Ball, N.Bernier, H.Bidaman, V.Bildstein, M.Bowry, D.S.Cross, M.R.Dunlop, R.Dunlop, A.B.Garnsworthy, P.E.Garrett, J.Henderson, J.Measures, B.Olaizola, K.Ortner, J.Park, C.M.Petrache, J.L.Pore, K.Raymond, J.K.Smith, D.Southall, C.E.Svensson, M.Ticu, J.Turko, K.Whitmore, T.Zidar, for the GRIFFIN Collaboration Spectroscopic studies of neutron-rich 129In and its β-decay daughter, 129Sn, using the GRIFFIN spectrometer RADIOACTIVITY 129,129mIn(β-)[from UCx(p, F), E=480 MeV, followed by ionization and extraction of relevant isotopes using the Ion-Guide Laser Ion Source (IGLIS) and mass separation of ions of interest using high-resolution mass spectrometer at ISAC-TRIUMF]; measured Eγ, Iγ, β, βγ- and γγ-coin, half-lives of decays of 129In g.s. and three isomers of 129In using GRIFFIN array for γ detection, and SCEPTAR for β particles. 129Sn; deduced levels, J, π, γ-branching ratios, β feedings, logft values from the decays of 129In g.s., and three isomeric states of 129In. 129mIn; deduced β branching for the decay of (29/2+), 1911-keV isomer. Comparison with previous results from the ENSDF database.
doi: 10.1103/PhysRevC.103.024310
2020BL03 Eur.Phys.J. A 56, 156 (2020) B.Blank, M.Aouadi, P.Ascher, M.Gerbaux, J.Giovinazzo, S.Grevy, T.Kurtukian Nieto, M.R.Dunlop, R.Dunlop, A.T.Laffoley, G.F.Grinyer, P.Finlay Branching ratio of the super-allowed β decay of 10C RADIOACTIVITY 10C (β+); measured γ-decay products of β-decay of 10C using high-resolution separator (HRS) of ISOLDE at CERN with Al catcher foil with USSSD detector; deduced γ-ray energy spectrum (separately 1021l7 keV peak, experiment and background); calculated pile-up 511 keV contribution; simulated energy spectrum, used for peak-area more precise evaluation; deduced super-allowed branching ratio. Future experiment on super-allowed β-decay branching ratio , of 10C; deduced higher precision to be obtained, expected still better precision and very good precision for T1/2 and the reaction Q.
doi: 10.1140/epja/s10050-020-00165-1
2020MA59 Phys.Rev. C 102, 054325 (2020) A.D.MacLean, A.T.Laffoley, C.E.Svensson, G.C.Ball, J.R.Leslie, C.Andreoiu, A.Babu, S.S.Bhattacharjee, H.Bidaman, V.Bildstein, C.Burbadge, M.Bowry, C.Cheng, D.S.Cross, A.Diaz Varela, I.Dillmann, M.R.Dunlop, R.Dunlop, L.J.Evitts, P.Finlay, S.Gillespie, A.B.Garnsworthy, P.E.Garrett, E.Gopaul, C.J.Griffin, G.F.Grinyer, G.Hackman, J.Henderson, B.Jigmeddorj, K.G.Leach, E.Kassanda, J.McAfee, M.Moukaddam, C.Natzke, S.Nittala, B.Olaizola, J.Park, C.Paxman, J.L.Pore, C.Porzio, A.J.Radich, P.Ruotsalainen, Y.Saito, S.Sharma, J.Smallcombe, J.K.Smith, R.Sultana, J.Turko, J.Williams, D.Yates, T.Zidar High-precision branching ratio measurement and spin assignment implications for 62Ga superallowed β decay RADIOACTIVITY 62Ga(β+), (EC); measured Eγ, Iγ, β+, β+γ- and βγγ-coin, γγ(θ) using GRIFFIN array of 16 Compton-suppressed HPGe clover detectors for γ rays, and SCEPTAR array of plastic scintillators for β particles at TRIUMF-ISAC facility. 62Zn; deduced levels, J, π, multipole mixing ratios, precise β branch for superallowed 0+ to 0+ transition, β feedings to excited 0+ and (1+) states, isospin-symmetry-breaking correction. Comparison with previous experimental results and implications for theoretical studies of isospin-symmetry-breaking correction calculations.
doi: 10.1103/PhysRevC.102.054325
2020OR05 Phys.Rev. C 102, 024323 (2020) K.Ortner, C.Andreoiu, M.Spieker, G.C.Ball, N.Bernier, H.Bidaman, V.Bildstein, M.Bowry, D.S.Cross, M.R.Dunlop, R.Dunlop, F.H.Garcia, A.B.Garnsworthy, P.E.Garrett, J.Henderson, J.Measures, B.Olaizola, J.Park, C.M.Petrache, J.L.Pore, K.Raymond, J.K.Smith, D.Southall, C.E.Svensson, M.Ticu, J.Turko, K.Whitmore, T.Zidar Collective 2p-2h intruder states in 118Sn studied via decay of 118In using the GRIFFIN spectrometer at TRIUMF RADIOACTIVITY 118mIn(β-)[118mIn beam from U(p, X), E=480 MeV, followed by selection of ions through Ion-Guide Laser Ion Source (IG-LIS) at TRIUMF-ISAC]; measured Eγ, Iγ, Eβ, βγ- and γγ-coin, γγ(θ) using GRIFFIN array for γ detection, and SCEPTAR array for β particles. 118Sn; deduced levels, J, π, γ-branching ratios, mixing ratios, B(E2), β feedings, logft. Comparison with sd IBM-2 theoretical calculations using the computer code NPBOS. Comparison with evaluated data in the ENSDF database. Systematics of B(E2) values for transitions from 2+ states in 112,114,116,118,120,122Sn.
doi: 10.1103/PhysRevC.102.024323
2020WH02 Phys.Rev. C 102, 024327 (2020) K.Whitmore, C.Andreoiu, F.H.Garcia, K.Ortner, J.D.Holt, T.Miyagi, G.C.Ball, N.Bernier, H.Bidaman, V.Bildstein, M.Bowry, D.S.Cross, M.R.Dunlop, R.Dunlop, A.B.Garnsworthy, P.E.Garrett, J.Henderson, J.Measures, B.Olaizola, J.Park, C.M.Petrache, J.L.Pore, J.K.Smith, D.Southall, C.E.Svensson, M.Ticu, J.Turko, T.Zidar β decay of 132In and spectroscopy of 132Sn and 131Sb with the GRIFFIN spectrometer RADIOACTIVITY 132In(β-), (β-n)[132In beam from U(p, X), E=480 MeV, followed by selection of ions through Ion-Guide Laser Ion Source (IG-LIS) at TRIUMF-ISAC]; 131mSn(β-)[from 132In β-n decay]; measured Eγ, Iγ, Eβ, βγ- and γγ-coin, γγ(θ), half-life of 132In decay using GRIFFIN array for γ detection, and SCEPTAR array for β particles. 132In; deduced beta-delayed neutron emission probability or Pn for decay of 132In from total number of decays and γ intensities. 131Sb, 132Sn; deduced levels, J, π, γ-branching ratios, mixing ratio for a transition in 132Sn, β feedings and logft values for levels in 132Sn. Comparison with VS-IMSRG theoretical calculations for positive-parity states in 132Sn. Comparison with evaluated data in the ENSDF database.
doi: 10.1103/PhysRevC.102.024327
2019DU12 Phys.Rev. C 99, 045805 (2019) R.Dunlop, C.E.Svensson, C.Andreoiu, G.C.Ball, N.Bernier, H.Bidaman, V.Bildstein, M.Bowry, D.S.Cross, I.Dillmann, M.R.Dunlop, F.H.Garcia, A.B.Garnsworthy, P.E.Garrett, G.Hackman, J.Henderson, J.Measures, D.Mucher, B.Olaizola, K.Ortner, J.Park, C.M.Petrache, J.L.Pore, J.K.Smith, D.Southall, M.Ticu, J.Turko, K.Whitmore, T.Zidar β decay and β-delayed neutron decay of the N=82 nucleus 13149In82 RADIOACTIVITY 131In(β-), (β-n)[from U(p, F), E=480 MeV]; measured Eγ, Iγ, Iβ-, γγ-, βγ-, and βγγ-coin, half-lives of 9/2+ ground state, 1/2- and 21/2+ isomers in 131In, and those of 10+ isomer in 130Sn, and (23/2-) isomer in 131Sn using the GRIFFIN array for γ detection and the SCEPTAR array for β detection at TRIUMF-ISAC facility. 130,131Sn, 130Sb; deduced levels, J, π, conversion coefficient, multipolarity, configurations, β feedings, delayed-neutron emission probabilities Pn for 21/2+ isomer, and combined Pn for 1/2- isomer and 9/2+ g.s. for the decays of 131In activities. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.99.045805
2017DU11 Phys.Rev. C 96, 045502 (2017) M.R.Dunlop, C.E.Svensson, G.C.Ball, J.R.Leslie, C.Andreoiu, N.Bernier, H.Bidaman, V.Bildstein, M.Bowry, C.Burbadge, R.Caballero-Folch, A.Diaz Varela, R.Dunlop, A.B.Garnsworthy, P.E.Garrett, G.Hackman, B.Jigmeddorj, K.G.Leach, A.D.MacLean, B.Olaizola, J.Measures, C.Natzke, Y.Saito, J.K.Smith, J.Turko, T.Zidar High-precision half-life measurement for the superallowed Fermi β+ emitter 22Mg RADIOACTIVITY 22Mg(β+)[from Si(p, X), E=480 MeV using ion guide laser ion source (IGLIS) at ISAC-TRIUMF facility]; measured Eγ, Iγ, β+ radiation, βγ-coin using a 4π continuous-flow gas proportional counter for β radiation and GRIFFIN array for γ detection, precise half-life of decay of 22Mg with detailed uncertainty analysis. Comparison with previous experimental results. Proposed further experiments to improve uncertainty of the superallowed branching ratio for tests of the CVC hypothesis.
doi: 10.1103/PhysRevC.96.045502
2017FI07 Phys.Rev. C 96, 025501 (2017) P.Finlay, A.T.Laffoley, G.C.Ball, P.C.Bender, M.R.Dunlop, R.Dunlop, G.Hackman, J.R.Leslie, A.D.MacLean, D.Miller, M.Moukaddam, B.Olaizola, N.Severijns, J.K.Smith, D.Southall, C.E.Svensson High-precision half-life determination for 21Na using a 4π gas-proportional counter RADIOACTIVITY 21Na(β+)[from Ta(p, X), E=480 MeV at TRIUMF cyclotron]; measured Eγ, βγ-coin, β+ particles, precise half-life of 21Na decay using 4π continuous-flow gas proportional counter at TRIUMF-ISAC facility. detailed analysis of half-life data and systematic uncertainties. 21Na; deduced world-average half-life by combining present result with previous measurements, and discussed contribution to the uncertainty in the Ft value of the superallowed β+ transition between the isospin T=1/2 mirror nuclei 21Na and 21Ne.
doi: 10.1103/PhysRevC.96.025501
2017GA04 Acta Phys.Pol. B48, 523 (2017) P.E.Garrett, B.Jigmeddorj, A.D.MacLean, H.Bidaman, V.Bildstein, C.Burbadge, G.A.Demand, A.Diaz Varela, M.Dunlop, R.Dunlop, B.Hadinia, B.Olaizola, C.E.Svensson, J.Turko, T.Zidar, A.B.Garnsworthy, M.Bowry, P.C.Bender, G.C.Ball, R.Caballero-Folch, I.Dillmann, G.Hackman, J.Henderson, W.J.Mills, M.Moukaddam, J.Park, C.J.Pearson, P.Ruotsalainen, J.Smallcombe, J.K.Smith, C.Andreoiu, D.S.Cross, J.L.Pore, K.Starosta High-statistics β-decay Measurements at TRIUMF-ISAC and the Transition from the 8π Spectrometer to GRIFFIN RADIOACTIVITY 122Cs(β+), (EC); measured Eγ, Iγ(θ), γγ-coin deduced low-lying levels, J, π, γ transitions, γ-ray coincidence spectra, unnormalized γ-ray σ(θ). Review lecture, everything just as examples, but it is not clear what has been published before and what is here for the first time.
doi: 10.5506/APhysPolB.48.523
2016DU10 Phys.Rev.Lett. 116, 172501 (2016) M.R.Dunlop, C.E.Svensson, G.C.Ball, G.F.Grinyer, J.R.Leslie, C.Andreoiu, R.A.E.Austin, T.Ballast, P.C.Bender, V.Bildstein, A.Diaz Varela, R.Dunlop, A.B.Garnsworthy, P.E.Garrett, G.Hackman, B.Hadinia, D.S.Jamieson, A.T.Laffoley, A.D.MacLean, D.M.Miller, W.J.Mills, J.Park, A.J.Radich, M.M.Rajabali, E.T.Rand, C.Unsworth, A.Valencik, Z.M.Wang, E.F.Zganjar High-Precision Half-Life Measurements for the Superallowed β+ Emitter 10C: Implications for Weak Scalar Currents RADIOACTIVITY 10C(EC) [from Ni, O(p, X)10C, E=480 MeV]; measured decay products, Eγ, Iγ; deduced T1/2 and its uncertainties. Comparison with available data.
doi: 10.1103/PhysRevLett.116.172501
2016DU13 Phys.Rev. C 93, 062801 (2016) R.Dunlop, V.Bildstein, I.Dillmann, A.Jungclaus, C.E.Svensson, C.Andreoiu, G.C.Ball, N.Bernier, H.Bidaman, P.Boubel, C.Burbadge, R.Caballero-Folch, M.R.Dunlop, L.J.Evitts, F.Garcia, A.B.Garnsworthy, P.E.Garrett, G.Hackman, S.Hallam, J.Henderson, S.Ilyushkin, D.Kisliuk, R.Krucken, J.Lassen, R.Li, E.MacConnachie, A.D.MacLean, E.McGee, M.Moukaddam, B.Olaizola, E.Padilla-Rodal, J.Park, O.Paetkau, C.M.Petrache, J.L.Pore, A.J.Radich, P.Ruotsalainen, J.Smallcombe, J.K.Smith, S.L.Tabor, A.Teigelhofer, J.Turko, T.Zidar Half-lives of neutron-rich 128-130Cd RADIOACTIVITY 128,129,129m,130Cd(β-)[from U(p, F), E=500 MeV]; measured Eγ, Iγ, Eβ, βγ-coin, T1/2 using GRIFFIN spectrometer at TRIUMF-ISAC facility. Comparison between the experimental and calculated half-lives using DF3+CQRPA and RHB+RQRPA models, and with previous experimental results.
doi: 10.1103/PhysRevC.93.062801
2015LA19 Phys.Rev. C 92, 025502 (2015) A.T.Laffoley, C.E.Svensson, C.Andreoiu, G.C.Ball, P.C.Bender, H.Bidaman, V.Bildstein, B.Blank, D.S.Cross, G.Deng, A.Diaz Varela, M.R.Dunlop, R.Dunlop, A.B.Garnsworthy, P.E.Garrett, J.Giovinazzo, G.F.Grinyer, J.Grinyer, G.Hackman, B.Hadinia, D.S.Jamieson, B.Jigmeddorj, D.Kisliuk, K.G.Leach, J.R.Leslie, A.D.MacLean, D.Miller, B.Mills, M.Moukaddam, A.J.Radich, M.M.Rajabali, E.T.Rand, J.C.Thomas, J.Turko, C.Unsworth, P.Voss High-precision half-life measurements for the superallowed Fermi β+ emitter 18Ne RADIOACTIVITY 18Ne(β+), (EC), 23Ne(β-)[from Si(p, X), E=480 MeV, mass-separated 18,23Ne beams]; measured β using 4π continuous-flow gas proportional counter, Eγ, Iγ, βγ-coin, half-lives of 18Ne and 23Ne isotopes at TRIUMF-ISAC facility. Discussed rate-dependent and diffusion effects, and uncertainty analysis. Comparison with previous measurements. Relevance to superallowed Fermi decay.
doi: 10.1103/PhysRevC.92.025502
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