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NSR database version of April 11, 2024.

Search: Author = B.R.Barquest

Found 14 matches.

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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
Citations: PlumX Metrics

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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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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Data from this article have been entered in the XUNDL database. For more information, click here.

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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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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2009CE04      Phys.Rev.Lett. 103, 152502 (2009)

J.Cerny, D.M.Moltz, D.W.Lee, K.Perajarvi, B.R.Barquest, L.E.Grossman, W.Jeong, C.C.Jewett

Reinvestigation of the Direct Two-Proton Decay of the Long-Lived Isomer 94Agm [0.4 s, 6.7 MeV, (21+)]

RADIOACTIVITY 94Ag(p), (2p) [from Ni(40Ca, 3np), E=197 MeV]; measured Ep, Ip, pp-coin.; deduced 94Agm one-proton radioactivity, energy groups, branching ratio, no two-proton radioactivity.

doi: 10.1103/PhysRevLett.103.152502
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Data from this article have been entered in the XUNDL database. For more information, click here.

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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2007BL24      Nucl.Instrum.Methods Phys.Res. B 261, 974 (2007)

D.L.Bleuel, M.A.Mcmahan, L.Ahle, B.R.Barquest, J.Cerny, L.H.Heilbronn, C.C.Jewett

Characterization of a tunable quasi-monoenergetic neutron beam from deuteron breakup

NUCLEAR REACTIONS Ti(d, np), Ta(d, np), E=20-29 MeV; measured products, Eπ, Iπ; deduced σ(θ, E). Data were imported from EXFOR entry C1595.

doi: 10.1016/j.nimb.2007.04.125
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1595.

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