NSR Query Results

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NSR database version of April 11, 2024.

Search: Author = A.A.Kwiatkowski

Found 48 matches.

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2023JA05      Nucl.Phys. A1033, 122636 (2023)

A.Jacobs, C.Andreoiu, J.Bergmann, T.Brunner, T.Dickel, I.Dillmann, E.Dunling, J.Flowerdew, L.Graham, G.Gwinner, Z.Hockenbery, W.J.Huang, B.Kootte, Y.Lan, K.G.Leach, E.Leistenschneider, D.Lunney, E.M.Lykiardopoulou, V.Monier, I.Mukul, S.F.Paul, W.R.Plass, M.P.Reiter, C.Scheidenberger, R.Thompson, J.L.Tracy, C.Will, M.E.Wieser, J.Dilling, A.A.Kwiatkowski

Improved high-precision mass measurements of mid-shell neon isotopes

ATOMIC MASSES 24,25,26Ne; measured radioactive ion beam (RIB) TOF spectra; deduced mass excess. Comparison with AME2020. TRIUMF's Ion Trap for Atomic and Nuclear science (TITAN), the Multi-Reflection Time-of-Flight Mass-Spectrometer (MR-TOF-MS).

doi: 10.1016/j.nuclphysa.2023.122636
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2023LY01      Phys.Rev. C 107, 024311 (2023)

E.M.Lykiardopoulou, G.Audi, T.Dickel, W.J.Huang, D.Lunney, W.R.Plass, M.P.Reiter, J.Dilling, A.A.Kwiatkowski, for the TITAN Collaboration

Exploring the limits of existence of proton-rich nuclei in the Z=70-82 region

ATOMIC MASSES 148Tb, 150,151,152,153,155Yb, 151Er, 151,153,154,156Lu, 152Ho, 152,156,157Tm, 156,157,159Hf, 157,158,160Ta, 160,161,163W, 161,162,164Re, 164,165,167Os, 165,166,168Ir, 168,169,171Pt, 170,172Au, 172,173,175Hg, 175Tl, 179Pb; analyzed experimental data on mass excess of 151,152,153,155Yb isotopes obtained in 2021BE23 (Phys.Rev.Lett. 127, 112501); deduced mass excess, S(p), S(2p), Thomas-Ehrmann shift. Values obtained by combining α-, β-, and proton-decay energies together with new experimental data on mass of Yb isotopes. Systematics of one and two proton separation energies for Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb isotopic chains. Comparison to AME2020.

doi: 10.1103/PhysRevC.107.024311
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2022PO02      Phys.Rev. C 105, L041301 (2022)

W.S.Porter, B.Ashrafkhani, J.Bergmann, C.Brown, T.Brunner, J.D.Cardona, D.Curien, I.Dedes, T.Dickel, J.Dudek, E.Dunling, G.Gwinner, Z.Hockenbery, J.D.Holt, C.Hornung, C.Izzo, A.Jacobs, A.Javaji, B.Kootte, G.Kripko-Koncz, E.M.Lykiardopoulou, T.Miyagi, I.Mukul, T.Murbock, W.R.Plass, M.P.Reiter, J.Ringuette, C.Scheidenberger, R.Silwal, C.Walls, H.L.Wang, Y.Wang, J.Yang, J.Dilling, A.A.Kwiatkowski

Mapping the N=40 island of inversion: Precision mass measurements of neutron-rich Fe isotopes

ATOMIC MASSES 63,64,65,65m,66,67,68,69,69m,70Fe; measured time-of-flight; deduced mass excess, S(2n), pairing gap. Systematics of S(2n) values for Z=24–28 isotope chains. Compared to mean-field calculations employing recent Woods-Saxon Hamiltonian and results from the multishell valence-space in-medium similarity renormalization group (VS-IMSRG). Comparison to recommended values from AME2020. TITAN (TRIUMF’s Ion Trap for Atomic and Nuclear science) Multiple-Reflection Time-of- Flight Mass Spectrometer.

doi: 10.1103/PhysRevC.105.L041301
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2022PO06      Phys.Rev. C 106, 024312 (2022)

W.S.Porter, E.Dunling, E.Leistenschneider, J.Bergmann, G.Bollen, T.Dickel, K.A.Dietrich, A.Hamaker, Z.Hockenbery, C.Izzo, A.Jacobs, A.Javaji, B.Kootte, Y.Lan, I.Miskun, I.Mukul, T.Murbock, S.F.Paul, W.R.Plass, D.Puentes, M.Redshaw, M.P.Reiter, R.Ringle, J.Ringuette, R.Sandler, C.Scheidenberger, R.Silwal, R.Simpson, C.S.Sumithrarachchi, A.Teigelhofer, A.A.Valverde, R.Weil, I.T.Yandow, J.Dilling, A.A.Kwiatkowski

Investigating nuclear structure near N=32 and N=34: Precision mass measurements of neutron-rich Ca, Ti, and V isotopes

ATOMIC MASSES 54Ca, 52,54,55,56Ti, 54,55,56,57,58V; measured time-of-flight ion-cyclotron-resonances (ToF-ICR) using TRIUMF-TITAN multiple-reflection time-of-flight mass spectrometer (MR-ToF-MS) and the NSCL(MSU)-LEBIT Penning trap mass spectrometer; deduced mass excesses. Comparison with evaluated data in AME2020, and with valence-space in-medium similarity renormalization group (VS-IMSRG) calculations. Systematics of S(2n) values in 46,47,48,49,50,51K, 47,48,49,50,51,52,53,54Ca, 48,49,50,51,52,53,54,55,56,57Sc, 49,50,51,52,53,54,55,56,57Sc, 49,50,51,52,53,54,55,56Ti, 50,51,52,53,54,55,56,57,58,59V, 51,52,53,54,55,56,57,58,59,60Cr.

doi: 10.1103/PhysRevC.106.024312
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2022SC17      J.Phys.(London) G49, 110502 (2022)

H.Schatz, A.D.Becerril Reyes, A.Best, E.F.Brown, K.Chatziioannou, K.A.Chipps, C.M.Deibel, R.Ezzeddine, D.K.Galloway, C.J.Hansen, F.Herwig, A.P.Ji, M.Lugaro, Z.Meisel, D.Norman, J.S.Read, L.F.Roberts, A.Spyrou, I.Tews, F.X.Timmes, C.Travaglio, N.Vassh, C.Abia, P.Adsley, S.Agarwal, M.Aliotta, W.Aoki, A.Arcones, A.Aryan, A.Bandyopadhyay, A.Banu, D.W.Bardayan, J.Barnes, A.Bauswein, T.C.Beers, J.Bishop, T.Boztepe, B.Cote, M.E.Caplan, A.E.Champagne, J.A.Clark, M.Couder, A.Couture, S.E.de Mink, S.Debnath, R.J.deBoer, J.den Hartogh, P.Denissenkov, V.Dexheimer, I.Dillmann, J.E.Escher, M.A.Famiano, R.Farmer, R.Fisher, C.Frohlich, A.Frebel, C.Fryer, G.Fuller, A.K.Ganguly, S.Ghosh, B.K.Gibson, T.Gorda, K.N.Gourgouliatos, V.Graber, M.Gupta, W.C.Haxton, A.Heger, W.R.Hix, W.C.G.Ho, E.M.Holmbeck, A.A.Hood, S.Huth, G.Imbriani, R.G.Izzard, R.Jain, H.Jayatissa, Z.Johnston, T.Kajino, A.Kankainen, G.G.Kiss, A.Kwiatkowski, M.La Cognata, A.M.Laird, L.Lamia, P.Landry, E.Laplace, K.D.Launey, D.Leahy, G.Leckenby, A.Lennarz, B.Longfellow, A.E.Lovell, W.G.Lynch, S.M.Lyons, K.Maeda, E.Masha, C.Matei, J.Merc, B.Messer, F.Montes, A.Mukherjee, M.R.Mumpower, D.Neto, B.Nevins, W.G.Newton, L.Q.Nguyen, K.Nishikawa, N.Nishimura, F.M.Nunes, E.O'Connor, B.W.O'Shea, W.-J.Ong, S.D.Pain, M.A.Pajkos, M.Pignatari, R.G.Pizzone, V.M.Placco, T.Plewa, B.Pritychenko, A.Psaltis, D.Puentes, Y.-Z.Qian, D.Radice, D.Rapagnani, B.M.Rebeiro, R.Reifarth, A.L.Richard, N.Rijal, I.U.Roederer, J.S.Rojo, J.S K, Y.Saito, A.Schwenk, M.L.Sergi, R.S.Sidhu, A.Simon, T.Sivarani, A.Skuladottir, M.S.Smith, A.Spiridon, T.M.Sprouse, S.Starrfield, A.W.Steiner, F.Strieder, I.Sultana, R.Surman, T.Szucs, A.Tawfik, F.Thielemann, L.Trache, R.Trappitsch, M.B.Tsang, A.Tumino, S.Upadhyayula, J.O.Valle Martinez, M.Van der Swaelmen, C.Viscasillas Vazquez, A.Watts, B.Wehmeyer, M.Wiescher, C.Wrede, J.Yoon, R.G.T.Zegers, M.A.Zermane, M.Zingale, the Horizon 2020 Collaborations

Horizons: nuclear astrophysics in the 2020s and beyond

doi: https://dx.doi.org/10.1088/1361-6471/ac8890
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2022SE09      Phys. Rev. Res. 4, 033229 (2022)

S.Sels, F.M.Maier, M.Au, P.Fischer, C.Kanitz, V.Lagaki, S.Lechner, E.Leistenschneider, D.Leimbach, E.M.Lykiardopoulou, A.A.Kwiatkowski, T.Manovitz, Y.N.Vila Gracia, G.Neyens, P.Plattner, S.Rothe, L.Schweikhard, M.Vilen, R.N.Wolf, S.Malbrunot-Ettenauer

Doppler and sympathetic cooling for the investigation of short-lived radioactive ions

doi: 10.1103/PhysRevResearch.4.033229
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2022SI20      Phys.Lett. B 833, 137288 (2022)

R.Silwal, C.Andreoiu, B.Ashrafkhani, J.Bergmann, T.Brunner, J.Cardona, K.Dietrich, E.Dunling, G.Gwinner, Z.Hockenbery, J.D.Holt, C.Izzo, A.Jacobs, A.Javaji, B.Kootte, Y.Lan, D.Lunney, E.M.Lykiardopoulou, T.Miyagi, M.Mougeot, I.Mukul, T.Murbock, W.S.Porter, M.Reiter, J.Ringuette, J.Dilling, A.A.Kwiatkowski

Summit of the N=40 island of inversion: Precision mass measurements and ab initio calculations of neutron-rich chromium isotopes

ATOMIC MASSES 59Cr, 61,62,63,64,65Cr; measured frequencies, TOF; deduced mass excess values, pairing gap, two-neutron separation energies, intruder configurations. Comparison with theoretical calculations, AME2020 evaluation. MR-TOF-MS, part of the TRIUMF's Ion Trap for Atomic and Nuclear Science (TITAN) facility.

doi: 10.1016/j.physletb.2022.137288
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2021BE23      Phys.Rev.Lett. 127, 112501 (2021)

S.Beck, B.Kootte, I.Dedes, T.Dickel, A.A.Kwiatkowski, E.M.Lykiardopoulou, W.R.Plass, M.P.Reiter, C.Andreoiu, J.Bergmann, T.Brunner, D.Curien, J.Dilling, J.Dudek, E.Dunling, J.Flowerdew, A.Gaamouci, L.Graham, G.Gwinner, A.Jacobs, R.Klawitter, Y.Lan, E.Leistenschneider, N.Minkov, V.Monier, I.Mukul, S.F.Paul, C.Scheidenberger, R.I.Thompson, J.L.Tracy, Jr., M.Vansteenkiste, H.-L.Wang, M.E.Wieser, C.Will, J.Yang

Mass Measurements of Neutron-Deficient Yb Isotopes and Nuclear Structure at the Extreme Proton-Rich Side of the N=82 Shell

ATOMIC MASSES 150,151,152,153,154,155,156Yb; measured frequencies, TOF; deduced mass excess values. Comparison with systematics, AME2020 evaluation. TITAN's multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS).

RADIOACTIVITY 151Yb(IT); measured decay products; deduced excitation energy.

doi: 10.1103/PhysRevLett.127.112501
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2021IZ01      Phys.Rev. C 103, 025811 (2021)

C.Izzo, J.Bergmann, K.A.Dietrich, E.Dunling, D.Fusco, A.Jacobs, B.Kootte, G.Kripko-Koncz, Y.Lan, E.Leistenschneider, E.M.Lykiardopoulou, I.Mukul, S.F.Paul, M.P.Reiter, J.L.Tracy, C.Andreoiu, T.Brunner, T.Dickel, J.Dilling, I.Dillmann, G.Gwinner, D.Lascar, K.G.Leach, W.R.Plass, C.Scheidenberger, M.E.Wieser, A.A.Kwiatkowski

Mass measurements of neutron-rich indium isotopes for r-process studies

ATOMIC MASSES 125,126,127,127m,128,128m,129,129m,130,130m,131,131m,132,133,133m,134In; measured time-of-flight spectra using TITAN multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) at ISAC-TRIUMF facility; deduced mass excesses. 127m,128m,129m,130m,131m,133mIn; deduced excitation energies of two isomeric states each in 127In, 128In, 129In, and 131In, and one isomeric state each in 130In and 132In. Comparison with recent measurements, evaluated data in AME-2016 and ENSDF database, and with predictions from theoretical mass models: FRDM2012, HFB-24, WS4, KTUY05, and DZ95. Radioactive indium beams produced in UCx(p, X), E=480 MeV reaction, followed by selective ionization using an ion-guide laser ion source (IG-LIS), and mass separated by ISAC mass separator, and finally sent to MR-TOF-MS system consisting of a helium-filled rf transport system and injection trap, an electrostatic time-of-flight mass analyzer, and a MagneTOF detector. 128,128mIn, 128,128mSn, 128Sb, 128Cs, 128I, 128Te, 128Xe; measured mass spectrum for A=128 nuclei. Systematics of energies of 1/2- isomers in 101,103,105,107,109,111,113,115,117,119,121,123,125,127,129,131,133In. Relevance to future r-process calculations, including the effect of isomers.

doi: 10.1103/PhysRevC.103.025811
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2021LE02      Phys.Rev.Lett. 126, 042501 (2021)

E.Leistenschneider, E.Dunling, G.Bollen, B.A.Brown, J.Dilling, A.Hamaker, J.D.Holt, A.Jacobs, A.A.Kwiatkowski, T.Miyagi, W.S.Porter, D.Puentes, M.Redshaw, M.P.Reiter, R.Ringle, R.Sandler, C.S.Sumithrarachchi, A.A.Valverde, I.T.Yandow, TITAN Collaboration

Precision Mass Measurements of Neutron-Rich Scandium Isotopes Refine the Evolution of N = 32 and N = 34 Shell Closures

ATOMIC MASSES 50,51,52,53,54,55Sc; measured frequencies of cyclotron motion; deduced TOF-ICR spectrum, mass excess, mass ratios. Comparison with the AME2016 atomic mass evaluation data, predictions from both ab initio and phenomenological nuclear theories.

doi: 10.1103/PhysRevLett.126.042501
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2021MU05      Phys.Rev. C 103, 044320 (2021)

I.Mukul, C.Andreoiu, J.Bergmann, M.Brodeur, T.Brunner, K.A.Dietrich, T.Dickel, I.Dillmann, E.Dunling, D.Fusco, G.Gwinner, C.Izzo, A.Jacobs, B.Kootte, Y.Lan, E.Leistenschneider, E.M.Lykiardopoulou, S.F.Paul, M.P.Reiter, J.L.Tracy, J.Dilling, A.A.Kwiatkowski

Examining the nuclear mass surface of Rb and Sr isotopes in the A ≈ 104 region via precision mass measurements

ATOMIC MASSES 99,100,101,102,103Rb, 99,100,101,102,103,104,105Sr; measured time-of-flight spectra using Multiple-Reflection Time-of-Flight Mass Separator (MR-TOF-MS) at the TITAN-TRIUMF facility; deduced mass excesses, S(2n), S(n), neutron pairing gaps, fractional r-process abundance for Rb and Sr isotopes relative to most abundant isotopes using waiting point approximation. Comparison with previous experimental values, and with AME2016 evaluation. Discussed astrophysical implications for the r-process. Beams of rubidium and strontium isotopes produced in U(p, X), E=480 MeV reaction at the ISAC-TRIUMF facility, followed by ionization using TRIUMF's Resonant Laser Ionization Ion Source (TRILIS) and mass separated using a dipole magnet.

doi: 10.1103/PhysRevC.103.044320
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2021PA44      Phys.Rev. C 104, 065803 (2021)

S.F.Paul, J.Bergmann, J.D.Cardona, K.A.Dietrich, E.Dunling, Z.Hockenbery, C.Hornung, C.Izzo, A.Jacobs, A.Javaji, B.Kootte, Y.Lan, E.Leistenschneider, E.M.Lykiardopoulou, I.Mukul, T.Murbock, W.S.Porter, R.Silwal, M.B.Smith, J.Ringuette, T.Brunner, T.Dickel, I.Dillmann, G.Gwinner, M.MacCormick, M.P.Reiter, H.Schatz, N.A.Smirnova, J.Dilling, A.A.Kwiatkowski

Mass measurements of 60-63Ga reduce x-ray burst model uncertainties and extend the evaluated T=1 isobaric multiplet mass equation

ATOMIC MASSES 60,61,62,63Ga; measured mass spectra using the TITAN multiple-reflection time-of-flight (MR-TOF) mass spectrometer at TRIUMF-ISAC facility; deduced mass excesses and S(p), and compared with previous experimental results and AME2020 evaluation, and theoretical calculations for S(p). Discussed isobaric multiplet mass equation (IMME) for A=60, and systematic trend for A=42-62 even-A nuclei. Relevance of 60,61Ga mass measurements for the rp process in x-ray bursts, and for 60Zn waiting point nucleus. 60,61,62,63Ga isotopes produced in Zr(p, X), E=480 MeV, and selectively ionized by TRIUMF's Resonant Laser Ion Source (TRILIS).

doi: 10.1103/PhysRevC.104.065803
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2020LE06      J.Phys.(London) G47, 045113 (2020)

E.Leistenschneider, R.Klawitter, A.Lennarz, M.Alanssari, J.C.Bale, B.R.Barquest, U.Chowdhury, A.Finlay, A.T.Gallant, B.Kootte, D.Lascar, K.G.Leach, A.J.Mayer, D.Short, C.Andreoiu, G.Gwinner, M.E.Wieser, J.Dilling, A.A.Kwiatkowski

Diversifying beam species through decay and recapture ion trapping: a demonstrative experiment at TITAN-EBIT

RADIOACTIVITY 30Mg, 30Al(β-) [from U(p, X), E=480 MeV]; measured decay products, Eγ, Iγ; deduced γ-ray energies, population and charge-state evolutions and in-trap decay at TITAN-EBIT, identification of daughter species. TRIUMF's ISOL facility, the isotope separator and accelerator (ISAC).

ATOMIC MASSES 30Mg, 30Al; measured ToF-ICR resonance frequencies; deduced atomic mass excesses. Comparison with available data.

doi: 10.1088/1361-6471/ab6ee1
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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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2019SC11      Nucl.Phys. A989, 201 (2019)

S.Schwarz, B.R.Barquest, G.Bollen, R.Ferrer, A.A.Kwiatkowski, D.L.Lincoln, D.J.Morrissey, R.Ringle, J.Savory

High-precision mass measurements of Ge and As isotopes near N = Z

NUCLEAR REACTIONS 9Be(78Kr, x), E=150 MeV/nucleon[producing desired nuclei (64,65Ge, 66,67As) of E about 90 MeV/nucleon]; measured reaction products using upgraded Low Energy Beam Ion Trap (LEBIT) facility at NSCL coupled to high-pressure gas cell; deduced β-decay activity vs mass; resonances in TOF vs frequency using one-RF-pulse and two-pulse-Ramney excitation scheme, mass-dependent frequency shift, frequency ratios for 67Ar/67ArO; deduced mass excess; compared with AME, AME2016 and other published values (to be used also for CVC tests).

doi: 10.1016/j.nuclphysa.2019.06.007
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2018BA08      Phys.Rev. C 97, 024312 (2018)

C.Babcock, R.Klawitter, E.Leistenschneider, D.Lascar, B.R.Barquest, A.Finlay, M.Foster, A.T.Gallant, P.Hunt, B.Kootte, Y.Lan, S.F.Paul, M.L.Phan, M.P.Reiter, B.Schultz, D.Short, C.Andreoiu, M.Brodeur, I.Dillmann, G.Gwinner, A.A.Kwiatkowski, K.G.Leach, J.Dilling

Mass measurements of neutron-rich indium isotopes toward the N=82 shell closure

ATOMIC MASSES 125,125m,126,126m,127,127m,128,128m,129,129m,130,130mIn; measured time-of-flight ion-cyclotron-resonance frequencies using TRIUMF's Ion Traps for Atomic and Nuclear science experiment (TITAN); deduced mass excesses, and energies of the isomeric states. Comparison with AME-2016 and ENSDF evaluated data. systematics of S(2n) values for N=74-82 Sb, Sn In and Cd nuclei, and those of pairing gaps for N=70-82 Sn and In nuclei.

NUCLEAR REACTIONS U(p, X)125In/125mIn/126In/126mIn/127In/127mIn/128In/128mIn/129In/129mIn/130In/130mIn, E=480 MeV; measured reaction products and time-of-flight spectra for ions at TRIUMF-ISAC facility using Ion Guide Laser Ion ISAC magnetic mass separator, radio frequency quadrupole cooler and buncher (RFQ), a helium-filled Paul trap, and electron beam ion trap (EBIT).

doi: 10.1103/PhysRevC.97.024312
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Data from this article have been entered in the XUNDL database. For more information, click here.

2018LE03      Phys.Rev.Lett. 120, 062503 (2018)

E.Leistenschneider, M.P.Reiter, S.Ayet San Andres, B.Kootte, J.D.Holt, P.Navratil, C.Babcock, C.Barbieri, B.R.Barquest, J.Bergmann, J.Bollig, T.Brunner, E.Dunling, A.Finlay, H.Geissel, L.Graham, F.Greiner, H.Hergert, C.Hornung, C.Jesch, R.Klawitter, Y.Lan, D.Lascar, K.G.Leach, W.Lippert, J.E.McKay, S.F.Paul, A.Schwenk, D.Short, J.Simonis, V.Soma, R.Steinbrugge, S.R.Stroberg, R.Thompson, M.E.Wieser, C.Will, M.Yavor, C.Andreoiu, T.Dickel, I.Dillmann, G.Gwinner, W.R.Plass, C.Scheidenberger, A.A.Kwiatkowski, J.Dilling

Dawning of the N=32 Shell Closure Seen through Precision Mass Measurements of Neutron-Rich Titanium Isotopes

ATOMIC MASSES 51V, 51,52,53,54,55Ti, 52,53,54,55Cr; measured radio frequencies, TOF; deduced mass excesses. Comparison with the AME16 recommended values.

doi: 10.1103/PhysRevLett.120.062503
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2018RE11      Phys.Rev. C 98, 024310 (2018)

M.P.Reiter, S.Ayet San Andres, E.Dunling, B.Kootte, E.Leistenschneider, C.Andreoiu, C.Babcock, B.R.Barquest, J.Bollig, T.Brunner, I.Dillmann, A.Finlay, G.Gwinner, L.Graham, J.D.Holt, C.Hornung, C.Jesch, R.Klawitter, Y.Lan, D.Lascar, J.E.McKay, S.F.Paul, R.Steinbrugge, R.Thompson, J.L.Tracy, M.E.Wieser, C.Will, T.Dickel, W.R.Plass, C.Scheidenberger, A.A.Kwiatkowski, J.Dilling

Quenching of the N=32 neutron shell closure studied via precision mass measurements of neutron-rich vanadium isotopes

ATOMIC MASSES 52,53,54Cr, 51,52,53Ti, 51,52,53,54,55V; measured multiple-reflection time-of-flight mass-Spectrometer and isobar separator (MR-TOF-MS) spectra, time-of-flight ion-cyclotron-resonance (ToF-ICR) resonances, and mass excesses using TRIUMF Ion Trap for Atomic and Nuclear science (TITAN) penning trap; deduced shell gaps for N=26-35 vanadium and calcium isotopes. Comparison with values in AME-2016. Systematics of S(2n) and half-lives for Z=19-24, N=28-36 nuclides. Discussed the evolution of the N=32 neutron shell closure.

doi: 10.1103/PhysRevC.98.024310
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2017BR14      Phys.Rev. C 96, 034316 (2017)

M.Brodeur, A.A.Kwiatkowski, O.M.Drozdowski, C.Andreoiu, D.Burdette, A.Chaudhuri, U.Chowdhury, A.T.Gallant, A.Grossheim, G.Gwinner, H.Heggen, J.D.Holt, R.Klawitter, J.Lassen, K.G.Leach, A.Lennarz, C.Nicoloff, S.Raeder, B.E.Schultz, S.R.Stroberg, A.Teigelhofer, R.Thompson, M.Wieser, J.Dilling

Precision mass measurements of magnesium isotopes and implications for the validity of the isobaric mass multiplet equation

ATOMIC MASSES 27,28,29Mg; measured cyclotron frequencies, mass excesses using TITAN Penning trap at ISAC-TRIUMF facility; deduced S(p). Comparison with AME-2016 evaluated data, and with ab initio calculations from the valence-space in-medium similarity renormalization group. 27,28,29Mg produced in SiC(p, X), E=480 MeV reaction, followed by laser resonance ionization in a radio-frequency ion guide (IG-LIS).29Mg, 29Cl, 30Mg, 30Ar; analyzed isobaric mass multiplet equation (IMME) in the form of a cubic term. 28S, 29Cl; need to confirm mass excess of 28S and S(n) of 29Cl.

doi: 10.1103/PhysRevC.96.034316
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2017GA20      Phys.Rev. C 96, 024325 (2017)

A.T.Gallant, M.Alanssari, J.C.Bale, C.Andreoiu, B.R.Barquest, U.Chowdhury, J.Even, A.Finlay, D.Frekers, G.Gwinner, R.Klawitter, B.Kootte, A.A.Kwiatkowski, D.Lascar, K.G.Leach, E.Leistenschneider, A.Lennarz, A.J.Mayer, D.Short, R.Thompson, M.Wieser, D.Lunney, J.Dilling

Mass determination near N=20 for Al and Na isotopes

ATOMIC MASSES 31,32Na, 29,34,35Al; measured cyclotron frequencies and mass excesses by time-of-flight ion-cyclotron-resonance (TOF-ICR) technique using the TITAN Penning trap mass spectrometer at ISAC-TRIUMF; deduced S(2n). Radioactive isotopes produced via the isotope separator on-line (ISOL) technique by a 480-MeV proton beam impinging on a UCx target, followed by the separation of sodium isotopes by surface ionization, and aluminum isotopes by the TRIUMF Resonant Ionization Laser Ion Source (TRILIS). Comparison with previous experimental values and mass evaluations. Systematics of S(2n) values for N=18-25 Na, Mg, and Al isotopic chains.

doi: 10.1103/PhysRevC.96.024325
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2017LA16      Phys.Rev. C 96, 044323 (2017)

D.Lascar, R.Klawitter, C.Babcock, E.Leistenschneider, S.R.Stroberg, B.R.Barquest, A.Finlay, M.Foster, A.T.Gallant, P.Hunt, J.Kelly, B.Kootte, Y.Lan, S.F.Paul, M.L.Phan, M.P.Reiter, B.Schultz, D.Short, J.Simonis, C.Andreoiu, M.Brodeur, I.Dillmann, G.Gwinner, J.D.Holt, A.A.Kwiatkowski, K.G.Leach, J.Dilling

Precision mass measurements of 125-127Cd isotopes and isomers approaching the N=82 closed shell

ATOMIC MASSES 125,125m,126,127,127mCd, 133Cs; measured TOF ion cyclotron resonances, cyclotron frequencies using TITAN-ISOLTRAP-TRIUMF facility; deduced mass excesses. Comparison with AME-2012 evaluated data, and ab initio shell-model calculations using NUSHELLX code, and with IMSRG calculations. The Cd isotopes produced in U(p, F), E=500 MeV protons using uranium carbide target and Ion Guide Laser Ion Source (IG-LIS) at ISAC-TRIUMF facility.

doi: 10.1103/PhysRevC.96.044323
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2017RE10      Phys.Rev. C 96, 052501 (2017)

M.P.Reiter, K.G.Leach, O.M.Drozdowski, S.R.Stroberg, J.D.Holt, C.Andreoiu, C.Babcock, B.Barquest, M.Brodeur, A.Finlay, M.Foster, A.T.Gallant, G.Gwinner, R.Klawitter, B.Kootte, A.A.Kwiatkowski, Y.Lan, D.Lascar, E.Leistenschneider, A.Lennarz, S.Paul, R.Steinbrugge, R.I.Thompson, M.Wieser, J.Dilling

High-precision QEC-value measurement of the superallowed β+ emitter 22Mg and an ab initio evaluation of the A=22 isobaric triplet

ATOMIC MASSES 22Mg; measured time-of-flight quadrupole-excitation and Ramsey-excitation resonance spectra using Ion Trap for Atomic and Nuclear Science (TITAN) at TRIUMF; deduced average frequency ratios for the mass measurements. 22Mg, 22Na; deduced mass excesses and Q value for ϵ decay of 22Mg decay to 22Na. Comparison with AME-2016 and Hardy-Towner evaluations. 22Mg, 22Ne, 22Na; deduced new coefficients of the IMME by using state-of-the-art ab initio shell-model calculations of the IAS energies. Relevance to isospin-symmetry-breaking (ISB) correction in superallowed β decays.

doi: 10.1103/PhysRevC.96.052501
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2016KL04      Phys.Rev. C 93, 045807 (2016)

R.Klawitter, A.Bader, M.Brodeur, U.Chowdhury, A.Chaudhuri, J.Fallis, A.T.Gallant, A.Grossheim, A.A.Kwiatkowski, D.Lascar, K.G.Leach, A.Lennarz, T.D.Macdonald, J.Pearkes, S.Seeraji, M.C.Simon, V.V.Simon, B.E.Schultz, J.Dilling

Mass measurements of neutron-rich Rb and Sr isotopes

ATOMIC MASSES 98,99,100Rb, 98,99,100,101Sr; measured cyclotron frequency using the time-of-flight ion-cyclotron-resonance technique (TOF-ICR) using TITAN Penning-trap mass spectrometer at ISAC-TRIUMF; deduced mass excesses. Comparison with previous measurements and AME-2012 evaluation. Rb and Sr ions produced in U(p, F), E=480 MeV reaction and separated by a dipole magnet.

doi: 10.1103/PhysRevC.93.045807
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2015CH58      Phys.Rev. C 92, 045803 (2015)

U.Chowdhury, K.G.Leach, C.Andreoiu, A.Bader, M.Brodeur, A.Chaudhuri, A.T.Gallant, A.Grossheim, G.Gwinner, R.Klawitter, A.A.Kwiatkowski, A.Lennarz, T.D.Macdonald, J.Pearkes, B.E.Schultz, J.Dilling

First direct mass measurement of the neutron-deficient nucleus 24Al

ATOMIC MASSES 24Al; measured time-of-flight quadrupole excitation resonance spectrum for 24Al ions, mass excess using TITAN Penning-Trap mass spectrometer and Ion-Guide Laser Ion Source (IG-LIS) at TRIUMF; deduced S(p). Comparison with other data and with AME-2012.

NUCLEAR REACTIONS 23Mg(p, γ)24Al; measured reaction resonance energy of astrophysical interest. Comparison with data from DRAGON at TRIUMF.

doi: 10.1103/PhysRevC.92.045803
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2015KW01      Phys.Rev. C 92, 061301 (2015)

A.A.Kwiatkowski, C.Andreoiu, J.C.Bale, A.Chaudhuri, U.Chowdhury, S.Malbrunot-Ettenauer, A.T.Gallant, A.Grossheim, G.Gwinner, A.Lennarz, T.D.Macdonald, T.J.M.Rauch, B.E.Schultz, S.Seeraji, M.C.Simon, V.V.Simon, D.Lunney, A.Poves, J.Dilling

Observation of a crossover of S2n in the island of inversion from precision mass spectrometry

ATOMIC MASSES 27,29,30,31,32,33,34Al; measured TOF-ICR resonance, mass excess using Ion Trap for Atomic and Nuclear science (TITAN) Penning-trap facility at TRIUMF. Comparison with AME-2012, and previous experimental values. Systematics of S(2n) values for 28,29,30,31,32,33,34,35,36,37Mg, 29,30,31,32,33,34,35,36,37,38Al, comparison of experimental and theoretical values; deduced crossover at N=21 in the island of inversion. Large-scale shell-model calculations.

doi: 10.1103/PhysRevC.92.061301
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2015VO05      Phys.Rev. C 91, 044307 (2015)

A.Voss, F.Buchinger, B.Cheal, J.E.Crawford, J.Dilling, M.Kortelainen, A.A.Kwiatkowski, A.Leary, C.D.P.Levy, F.Mooshammer, M.L.Ojeda, M.R.Pearson, T.J.Procter, W.Al Tamimi

Nuclear moments and charge radii of neutron-deficient francium isotopes and isomers

NUCLEAR MOMENTS 204,204m,205,206,206m,208Fr; measured optical fluorescence and hyperfine structure spectra using Collinear laser fluorescence spectroscopy technique at TRIUMF-ISAC facility; deduced spins, isotope shifts, hyperfine coupling constants, magnetic moments, charge radii, spectroscopic electric quadrupole moments, two isomeric states in 206Fr. Comparison with previous experimental results, and with theoretical calculations within the energy density functional (EDF) framework using Skyrme parametrization UNEDF0 and HFBTHO computer code for A=204-213 Fr isotopes. Activities of Fr produced in U(p, X), E=500 MeV reaction.

doi: 10.1103/PhysRevC.91.044307
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2014GA20      Phys.Rev.Lett. 113, 082501 (2014)

A.T.Gallant, M.Brodeur, C.Andreoiu, A.Bader, A.Chaudhuri, U.Chowdhury, A.Grossheim, R.Klawitter, A.A.Kwiatkowski, K.G.Leach, A.Lennarz, T.D.Macdonald, B.E.Schultz, J.Lassen, H.Heggen, S.Raeder, A.Teigelhofer, B.A.Brown, A.Magilligan, J.D.Holt, J.Menendez, J.Simonis, A.Schwenk, J.Dilling

Breakdown of the Isobaric Multiplet Mass Equation for the A=20 and 21 Multiplets

ATOMIC MASSES 20,21Mg; measured time-of-flight ion cyclotron resonance; deduced masses. Comparison with shell model calculations, AME2012 mass evaluation.

doi: 10.1103/PhysRevLett.113.082501
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2014KW01      Hyperfine Interactions 225, 143 (2014)

A.A.Kwiatkowski, C.Andreoiu, J.C.Bale, T.Brunner, A.Chaudhuri, U.Chowdhury, P.Delheij, S.Ettenauer, D.Frekers, A.T.Gallant, A.Grossheim, G.Gwinner, F.Jang, A.Lennarz, T.Ma, E.Mane, M.R.Pearson, B.E.Schultz, M.C.Simon, V.V.Simon, J.Dilling

TITAN: An ion trap facility for on-line mass measurement experiments

doi: 10.1007/s10751-013-0892-8
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2014KW04      Phys.Rev. C 89, 045502 (2014)

A.A.Kwiatkowski, T.Brunner, J.D.Holt, A.Chaudhuri, U.Chowdhury, M.Eibach, J.Engel, A.T.Gallant, A.Grossheim, M.Horoi, A.Lennarz, T.D.Macdonald, M.R.Pearson, B.E.Schultz, M.C.Simon, R.A.Senkov, V.V.Simon, K.Zuber, J.Dilling

New determination of double-β-decay properties on 48Ca High-precision Qββ-value measurement and improved nuclear matrix element calculations

ATOMIC MASSES 48Ca, 48Ti; measured cyclotron-frequencies, resonances using TITAN system consisting of radio frequency quadrupole (RFQ) beam cooler and buncher, an electron beam ion trap (EBIT), and a Penning trap (MPET) at ISAC-TRIUMF facility; deduced Q value for double β decay of 48Ti. Comparison with previous measurements and atomic mass evaluations (AME-2003 and AME-2012).

RADIOACTIVITY 48Ca(2β-); measured precise Q-value using TITAN system at ISAC-TRIUMF facility; calculated ββ nuclear matrix element by including effects of levels outside the valence space in a shell-model; discussed case for a new experiment on double-beta decay of 48Ca.

doi: 10.1103/PhysRevC.89.045502
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2014LE02      Hyperfine Interactions 225, 157 (2014)

A.Lennarz, T.Brunner, C.Andreoiu, A.Chaudhuri, U.Chowdhury, P.Delheij, J.Dilling, S.Ettenauer, D.Frekers, A.T.Gallant, A.Grossheim, F.Jang, A.A.Kwiatkowski, T.Ma, E.Mane, M.R.Pearson, B.E.Schultz, M.C.Simon, V.V.Simon

Electron-capture branching ratio measurements of odd-odd intermediate nuclei in double-beta decay at the TITAN facility

RADIOACTIVITY 116In(β-), (EC); measured decay products, Eγ, Iγ, X-rays; deduced isomers, energy levels, J, π. Comparison with available data.

doi: 10.1007/s10751-013-0893-7
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2014LE20      Phys.Rev.Lett. 113, 082502 (2014)

A.Lennarz, A.Grossheim, K.G.Leach, M.Alanssari, T.Brunner, A.Chaudhuri, U.Chowdhury, J.R.C.Lopez-Urrutia, A.T.Gallant, M.Holl, A.A.Kwiatkowski, J.Lassen, T.D.Macdonald, B.E.Schultz, S.Seeraji, M.C.Simon, C.Andreoiu, J.Dilling, D.Frekers

In-Trap Spectroscopy of Charge-Bred Radioactive Ions

RADIOACTIVITY 124In(β-), 124Cs(EC); measured decay products, Eγ, Iγ, X-rays; deduced isomer yields, T1/2, γ-ray energies, branching ratios. Electron-beam ion trap of the TITAN facility at TRIUMF.

doi: 10.1103/PhysRevLett.113.082502
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2014MA21      Phys.Rev. C 89, 044318 (2014)

T.D.Macdonald, B.E.Schultz, J.C.Bale, A.Chaudhuri, U.Chowdhury, D.Frekers, A.T.Gallant, A.Grossheim, A.A.Kwiatkowski, A.Lennarz, M.C.Simon, V.V.Simon, J.Dilling

Precision Penning-trap measurement to investigate the role of the51Cr (e-, νe) 51V Q value in the gallium anomaly

ATOMIC MASSES 51Cr, 51V; measured cyclotron-frequencies, TOF-ICR resonances using TITAN system consisting of radio frequency quadrupole (RFQ) beam cooler and buncher, an electron beam ion trap (EBIT), and a Penning trap (MPET) at ISAC-TRIUMF facility; deduced Q value for EC decay of 51Cr. Comparison with AME-2012 evaluation. Relevance to solar neutrino experiments SAGE and GALLEX.

RADIOACTIVITY 51Cr(EC); measured precise Q(EC) value using TITAN system for precise mass measurements at ISAC-TRIUMF facility.

doi: 10.1103/PhysRevC.89.044318
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2014SC09      Phys.Rev. C 90, 012501 (2014)

B.E.Schultz, M.Brodeur, C.Andreoiu, A.Bader, A.Chaudhuri, U.Chowdhury, A.T.Gallant, A.Grossheim, R.Klawitter, A.A.Kwiatkowski, K.G.Leach, A.Lennarz, T.D.Macdonald, J.Lassen, H.Heggen, S.Raeder, A.Teigelhofer, J.Dilling

Precision QEC-value measurement of 23Mg for testing the Cabibbo-Kobayashi-Maskawa matrix unitarity

ATOMIC MASSES 23Mg; measured quadrupole and Ramsey resonances, frequency ratios of 23Mg+ to 23Na+ using TITAN Penning-trap mass spectrometer at ISAC-TRIUMF facility; deduced Q value for 23Mg decay. Comparison with AME-2012.

RADIOACTIVITY 23Mg(EC)[from Si(p, X), E=480 MeV]; measured precise mass; deduced Q value, statistical rate function, ft value of mirror β transition. Comparison of Q value with AME-2012 evaluation. Test of the Cabibbo-Kobayashi-Maskawa matrix unitarity.

doi: 10.1103/PhysRevC.90.012501
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2013CH49      Phys.Rev. C 88, 054317 (2013)

A.Chaudhuri, C.Andreoiu, T.Brunner, U.Chowdhury, S.Ettenauer, A.T.Gallant, G.Gwinner, A.A.Kwiatkowski, A.Lennarz, D.Lunney, T.D.Macdonald, B.E.Schultz, M.C.Simon, V.V.Simon, J.Dilling

Evidence for the extinction of the N=20 neutron-shell closure for 32Mg from direct mass measurements

ATOMIC MASSES 29,30,31Na, 30,31,32,33,34Mg; measured Time-of-flight (TOF) ion-cyclotron resonances using TITAN Penning trap at ISAC-TRIUMF with respect to 16O and 39K references. Comparison with previous experimental data and with AME evaluations. Systematics of S(2n) values for N=18-24 Na and Mg isotopes; and experimental and theoretical neutron shell gap N=20, Z=10-22 nuclei. Discussed magicity of N=20 shell closure.

doi: 10.1103/PhysRevC.88.054317
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2013FR13      Phys.Lett. B 722, 233 (2013)

D.Frekers, M.C.Simon, C.Andreoiu, J.C.Bale, M.Brodeur, T.Brunner, A.Chaudhuri, U.Chowdhury, J.R.C.Lopez-Urrutia, P.Delheij, H.Ejiri, S.Ettenauer, A.T.Gallant, V.Gavrin, A.Grossheim, M.N.Harakeh, F.Jang, A.A.Kwiatkowski, J.Lassen, A.Lennarz, M.Luichtl, T.Ma, T.D.Macdonald, E.Mane, D.Robertson, B.E.Schultz, V.V.Simon, A.Teigelhofer, J.Dilling

Penning-trap Q-value determination of the 71Ga(ν, e-)71Ge reaction using threshold charge breeding of on-line produced isotopes

ATOMIC MASSES 71Ga, 71Ge; measured TOF, TOF-ICR, ion cyclotron resonance spectra; deduced Q-value and its uncertainty. TITAN Penning trap at ISAC/TRIUMF, comparison with AME data.

doi: 10.1016/j.physletb.2013.04.019
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2013KW01      Ann.Phys.(Leipzig) 525, 529 (2013)

A.A.Kwiatkowski, A.Chaudhuri, U.Chowdhury, A.T.Gallant, T.D.Macdonald, B.E.Schultz, M.C.Simon, J.Dilling

Mass measurements of singly and highly charged radioactive ions at TITAN: A new QEC-value measurement of 10C

NUCLEAR REACTIONS Ni, O(p, X)10C/10B, E=500 MeV; measured reaction products; deduced yields.

ATOMIC MASSES 10C, 10B, 74Rb; measured cyclotron frequency ratio; deduced Q-value. Comparison with available data.

doi: 10.1002/andp.201300039
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2013VO10      Phys.Rev.Lett. 111, 122501 (2013)

A.Voss, M.R.Pearson, J.Billowes, F.Buchinger, B.Cheal, J.E.Crawford, A.A.Kwiatkowski, C.D.P.Levy, O.Shelbaya

First Use of High-Frequency Intensity Modulation of Narrow-Linewidth Laser Light and Its Application in Determination of 206, 205, 204Fr Ground-State Properties

NUCLEAR MOMENTS 204,205,206Fr; measured hyperfine structure; deduced nuclear ground-state J, mean-square charge radii, nuclear magnetic moments. Comparison with available data, AME2012.

doi: 10.1103/PhysRevLett.111.122501
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2012GA29      Phys.Rev.Lett. 109, 032506 (2012)

A.T.Gallant, J.C.Bale, T.Brunner, U.Chowdhury, S.Ettenauer, A.Lennarz, D.Robertson, V.V.Simon, A.Chaudhuri, J.D.Holt, A.A.Kwiatkowski, E.Mane, J.Menendez, B.E.Schultz, M.C.Simon, C.Andreoiu, P.Delheij, M.R.Pearson, H.Savajols, A.Schwenk, J.Dilling

New Precision Mass Measurements of Neutron-Rich Calcium and Potassium Isotopes and Three-Nucleon Forces

ATOMIC MASSES 51,52Ca, 51K; measured TOF-ICR resonances, average frequency ratios; deduced masses. Comparison with available data. TRIUMF TITAN trap, comparison with available data, KB3G and GXPF1A effective interactions.

doi: 10.1103/PhysRevLett.109.032506
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2011KW02      J.Phys.:Conf.Ser. 312, 092035 (2011)

A.A.Kwiatkowski, B.R.Barquest, M.Block, G.Bollen, C.M.Campbell, R.Ferrer, D.L.Lincoln, D.J.Morrissey, G.K.Pang, M.Redshaw, R.Ringle, S.Schwarz, J.Savory

High precision Penning trap mass spectrometry of rare isotopes produced by projectile fragmentation

ATOMIC MASSES 63,64,65,66,67,68Fe, 64,65,66,67,68,69Co; measured mass, 2n separation energies using Penning trap radiofrequency. Compared with AME03, other data.

doi: 10.1088/1742-6596/312/9/092035
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2010FE01      Phys.Rev. C 81, 044318 (2010)

R.Ferrer, M.Block, C.Bachelet, B.R.Barquest, G.Bollen, C.M.Campbell, M.Facina, C.M.Folden III, C.Guenaut, A.A.Kwiatkowski, D.L.Lincoln, D.J.Morrissey, G.K.Pang, A.M.Prinke, R.Ringle, J.Savory, P.Schury, S.Schwarz

Penning trap mass spectrometry of neutron-rich Fe and Co isotopes around N=40 with the LEBIT mass spectrometer

ATOMIC MASSES 63,64,65,65m,66Fe, 64,65,66,67,67mCo; measured cyclotron resonance frequencies and mass excesses using LEBIT Penning-trap mass spectrometer. Comparison with AME-2003 evaluation. 61,63,65,67Fe; systematics of low-lying levels. Z=24-31, N=35-44; systematics of two-neutron separation energies.

doi: 10.1103/PhysRevC.81.044318
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2010HA14      Phys.Rev. C 81, 054301 (2010)

A.C.Hayes, A.A.Kwiatkowski

Structure of the particle-hole amplitudes in no-core shell model wave functions

NUCLEAR REACTIONS 6Li, 12C(e, e), (e, e'), E not given; calculated charge density, C0 and C2 form factors, point charged radius, charge form factor, B(E2), giant monopole strength using no-core shell model (NCSM) wave functions. Scattering from ground state and first excited state. Comparison with experimental data.

doi: 10.1103/PhysRevC.81.054301
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2010KW02      Phys.Rev. C 81, 058501 (2010)

A.A.Kwiatkowski, B.R.Barquest, G.Bollen, C.M.Campbell, R.Ferrer, A.E.Gehring, D.L.Lincoln, D.J.Morrissey, G.K.Pang, J.Savory, S.Schwarz

Penning trap mass measurement of 26Si

ATOMIC MASSES 26Si; measured mass using LEBIT Penning trap mass spectrometer. Comparison with other experimental results.

doi: 10.1103/PhysRevC.81.058501
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2009KW02      Phys.Rev. C 80, 051302 (2009)

A.A.Kwiatkowski, B.R.Barquest, G.Bollen, C.M.Campbell, D.L.Lincoln, D.J.Morrissey, G.K.Pang, A.M.Prinke, J.Savory, S.Schwarz, C.M.Folden III, D.Melconian, S.K.L.Sjue, M.Block

Precision test of the isobaric multiplet mass equation for the A=32, T=2 quintet

ATOMIC MASSES 32,33Si, 32S, 31,34P; measured masses using LEBIT Penning-trap spectrometer; deduced mass excesses. Discussed validity of quadratic form of isobaric multiplet mass equation (IMME).

doi: 10.1103/PhysRevC.80.051302
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2009RI12      Phys.Rev. C 80, 064321 (2009)

R.Ringle, C.Bachelet, M.Block, G.Bollen, M.Facina, C.M.Folden III, C.Guenaut, A.A.Kwiatkowski, D.J.Morrissey, G.K.Pang, A.M.Prinke, J.Savory, P.Schury, S.Schwarz, C.S.Sumithrarachchi

High-precision Penning trap mass measurements of neutron-rich sulfur isotopes at the N=28 shell closure

ATOMIC MASSES 40,41,42,43,44S; measured precise mass excesses using LEBIT Penning trap mass spectrometer. Comparison with other recent mass measurements. Systematics of S(2n) values for N=24-30, Z=15-18 nuclides.

doi: 10.1103/PhysRevC.80.064321
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2009SA12      Phys.Rev.Lett. 102, 132501 (2009)

J.Savory, P.Schury, C.Bachelet, M.Block, G.Bollen, M.Facina, C.M.Folden III, C.Guenaut, E.Kwan, A.A.Kwiatkowski, D.J.Morrissey, G.K.Pang, A.Prinke, R.Ringle, H.Schatz, S.Schwarz, C.S.Sumithrarachchi

rp Process and Masses of N ∼ Z ∼ 34 Nuclides

ATOMIC MASSES 68,70Se, 70,71Br; measured frequencies using penning trap; deduced masses. 70,71Kr predicted masses.

doi: 10.1103/PhysRevLett.102.132501
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2009SC29      Eur.Phys.J. A 42, 323 (2009)

S.Schwarz, M.Block, G.Bollen, C.M.Campbell, M.Facina, R.Ferrer, C.M.Folden III, A.A.Kwiatkowski, D.J.Morrissey, G.K.Pang, A.M.Prinke, R.J.Ringle, J.Savory, P.H.Schury

Precision Penning trap mass measurements of rare isotopes produced by projectile fragmentation

ATOMIC MASSES 32Si, 32P, 32S, 32Cl, 32Ar; analyzed masses from Penning trap measurements. Comparison with Isobaric Multiplet Mass Equation calculations.

doi: 10.1140/epja/i2009-10808-4
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2008BL05      Phys.Rev.Lett. 100, 132501 (2008); Erratum Phys.Rev.Lett. 101, 059901 (2008)

M.Block, C.Bachelet, G.Bollen, M.Facina, C.M.Folden III, C.Guenaut, A.A.Kwiatkowski, D.J.Morrissey, G.K.Pang, A.Prinke, R.Ringle, J.Savory, P.Schury, S.Schwarz

Discovery of a Nuclear Isomer in 65Fe with Penning Trap Mass Spectrometry

ATOMIC MASSES 63,64,65Fe, 64,65,66Co; measured and evaluated masses using Penning trap mass spectrometer, isotopes produced by projectile fragmentation with LEBIT at NSCL. 65mFe; deduced level energy, T1/2 for isomeric state.

doi: 10.1103/PhysRevLett.100.132501
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2007SC24      Phys.Rev. C 75, 055801 (2007); Erratum Phys.Rev. C 80, 029905 (2009)

P.Schury, C.Bachelet, M.Block, G.Bollen, D.A.Davies, M.Facina, C.M.Folden III, C.Guenaut, J.Huikari, E.Kwan, A.Kwiatkowski, D.J.Morrissey, R.Ringle, G.K.Pang, A.Prinke, J.Savory, H.Schatz, S.Schwarz, C.S.Sumithrarachchi, T.Sun

Precision mass measurements of rare isotopes near N = Z = 33 produced by fast beam fragmentation

ATOMIC MASSES 63,64Ga, 64,65,66Ge, 66,67,68As, 69Se; measured masses using penning trap mass spectrometer. Astrophysical implications discussed.

doi: 10.1103/PhysRevC.75.055801
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Note: The following list of authors and aliases matches the search parameter A.A.Kwiatkowski: , A.A.KWIATKOWSKI