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NSR database version of April 11, 2024.

Search: Author = M.Redshaw

Found 43 matches.

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2024BH03      Phys.Rev. C 109, L022501 (2024)

R.Bhandari, G.Bollen, T.Brunner, N.D.Gamage, A.Hamaker, Z.Hockenbery, M.Horana Gamage, D.K.Keblbeck, K.G.Leach, D.Puentes, M.Redshaw, R.Ringle, S.Schwarz, C.S.Sumithrarachchi, I.Yandow

First direct 7Be electron-capture Q-value measurement toward high-precision searches for neutrino physics beyond the Standard Model

doi: 10.1103/PhysRevC.109.L022501
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Data from this article have been entered in the XUNDL database. For more information, click here.


2023KE01      Phys.Rev. C 107, 015504 (2023)

D.K.Keblbeck, R.Bhandari, N.D.Gamage, M.H.Gamage, K.G.Leach, X.Mougeot, M.Redshaw

Updated evaluation of potential ultralow Q-value β-decay candidates

RADIOACTIVITY 47Ca, 74,77As, 98Tc, 124,127Sb, 131I, 133Xe, 135,136Cs, 140Ba, 140La, 148,151Pm, 154,155,156Eu, 161Tb, 166Dy, 166Er, 171Tm, 182,183Ta, 186,189Re, 188W, 193Os, 199Au(β-); 56Co, 57Ni, 73,74As, 75Se, 77Br, 81Kr, 96,97Tc, 101Rh, 111In, 113Sn, 124I, 129,132Cs, 146Pm, 146,147Eu, 156,157Tb, 159Dy, 167Tm, 169Yb, 169,173,174Lu, 175Hf, 177Ta, 183,184Re, 190Ir, 194,195Hg, 195Au, 200Tl, 205Bi(EC); 48V, 56Ni, 79Kr, 83Sr, 105Ag, 144,146Pm, 145,146,148Eu, 153Tb, 169,171Lu, 188Ir(β+); analyzed and evaluated potential ultraslow Q-values in β-, ϵ and β+ decays. 136Cs, 155,156Eu, 188W(β-); 56Co, 81Kr, 97Tc, 146Pm, 157Tb, 173Lu, 175Hf, 183Re, 195Au(EC); 105Ag, 144,146Pm, 148Eu(β+); deduced most promising candidates for ultralow Q value (1 keV or less) in allowed and first-forbidden β decays. Relevance to neutrino mass determination and as a testing ground for atomic interference effects in the nuclear β-decay process.

doi: 10.1103/PhysRevC.107.015504
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2023QU02      Phys.Rev. C 107, 024313 (2023)

F.G.A.Quarati, G.Bollen, P.Dorenbos, M.Eibach, K.Gulyuz, A.Hamaker, C.Izzo, D.K.Keblbeck, X.Mougeot, D.Puentes, M.Redshaw, R.Ringle, R.Sandler, J.Surbrook, I.Yandow

Measurements and computational analysis of the natural decay of 176Lu

RADIOACTIVITY 176Lu(β-), (EC); measured Eγ, Iγ, X-rays, self-scintillation spectra of Lu-containing crystal, Eβ, Iβ, βγ-coin; shape of the β-spectrum Eβ, experimental shape factor, 176Lu β endpoint energy, branching ratios for the β-decay to 6+ and 8+ of 176Hf, Q-values, upper limit for the EC-decay branch. 176Lu(β-); calculated σpectrum Eβ, logft values. 176Yb(2β-); deduced Q-values. Q-values area based on the measured cyclotron frequencies published in this paper. Spectra measurements performed with lutetium-containing scintillator crystals (LuAG:Pr and LSO:Ce) surrounded by NaI(Tl) and CeBr3 spectrometers.

ATOMIC MASSES 176Lu, 176Hf, 176Yb; measured cyclotron frequencies ratios for combinations of 176Lu, 176Hf and 176Yb ions among themselves; deduced mass excess for 176Lu and 176Hf based on the known values for 176Yb and measured ratios. Comparison to AME2020 and other experimental data. Penning trap mass spectrometry (PTMS) at Low Energy Beam and Ion Trap (LEBIT) facility at the National Superconducting Cyclotron Laboratory (NSCL).

doi: 10.1103/PhysRevC.107.024313
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Data from this article have been entered in the XUNDL database. For more information, click here.


2023RE04      Eur.Phys.J. A 59, 18 (2023)

M.Redshaw

Precise Q value determinations for forbidden and low energy β-decays using Penning trap mass spectrometry

RADIOACTIVITY 40K, 48Ca, 87Rb, 96Zr, 113Cd, 115In, 123Te, 138La, 176Lu, 187Re, 180Ta(β-), 50V(EC); analyzed available data; deduced Penning trap Q value measurements for forbidden β-decays of long-lived primordial nuclides, and for a subset of β-unstable nuclides that could potentially undergo a very low energy decay to an excited state in the daughter nucleus.

doi: 10.1140/epja/s10050-023-00925-9
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2023YA31      Phys.Rev. C 108, 065802 (2023)

I.T.Yandow, A.Abdullah-Smoot, G.Bollen, A.Hamaker, C.R.Nicoloff, D.Puentes, M.Redshaw, K.Gulyuz, Z.Meisel, W.-J.Ong, R.Ringle, R.Sandler, S.Schwarz, C.S.Sumithrarachchi, A.A.Valverde

Mass measurement of 27P to constrain type-I x-ray burst models and validate the isobaric multiplet mass equation for the A=27, T=3/2 isospin quartet

doi: 10.1103/PhysRevC.108.065802
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2022GA27      Phys.Rev. C 106, 045503 (2022)

N.D.Gamage, R.Sandler, F.Buchinger, J.A.Clark, D.Ray, R.Orford, W.S.Porter, M.Redshaw, G.Savard, K.S.Sharma, A.A.Valverde

Precise Q-value measurements of 112, 113Ag and 115Cd with the Canadian Penning trap for evaluation of potential ultralow Q-value β decays

RADIOACTIVITY 112,113Ag, 115Cd(β-); measured cyclotron frequency ratios of singly charged parent and daughter ions; deduced Q values of g.s to g.s decay, log ft, partial T1/2. On the basis of measured values and existing level schemes evaluated ultralow Q-values for potential decay branches to the excited states. Comparison to AME2020 evaluation. Canadian Penning trap mass spectrometer coupled to the californium rare isotope breeder upgrade (CARIBU) facility at ANL. Comparison to AME2020 evaluation.

ATOMIC MASSES 112,113Ag, 115Cd; measured cyclotron frequency; deduced mass excesses. Comparison to AME2020 evaluation.

doi: 10.1103/PhysRevC.106.045503
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2022GA36      Phys.Rev. C 106, 065503 (2022)

M.H.Gamage, R.Bhandari, G.Bollen, N.D.Gamage, A.Hamaker, D.Puentes, M.Redshaw, R.Ringle, S.Schwarz, C.S.Sumithrarachchi, I.Yandow

Identification of a potential ultralow-Q-value electron-capture decay branch in 75Se via a precise Penning trap measurement of the mass of 75As

ATOMIC MASSES 75As; measured cyclotron frequency; deduced mass excess. Ramsey TOF-ICR technique. Comparison to AME2020 and previous experimental values. Penning trap at LEBIT facility (FRIB).

RADIOACTIVITY 75Se(EC), 75Ge(β-); deduced Q-values using new mass value of 75As. Comparison to other experimental data.

doi: 10.1103/PhysRevC.106.065503
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2022ME04      Phys.Rev. C 105, 025804 (2022)

Z.Meisel, A.Hamaker, G.Bollen, B.A.Brown, M.Eibach, K.Gulyuz, C.Izzo, C.Langer, F.Montes, W.-J.Ong, D.Puentes, M.Redshaw, R.Ringle, R.Sandler, H.Schatz, S.Schwarz, C.S.Sumithrarachchi, A.A.Valverde, I.T.Yandow

Improved nuclear physics near A=61 refines urca neutrino luminosities in accreted neutron star crusts

ATOMIC MASSES 61Zn; measured time of flight, cyclotron frequency; deduced mass excess. Compared with AME2020 results. Low Energy Beam and Ion Trap (LEBIT) facility at the NSCL.

NUCLEAR REACTIONS 61Zn, 60Cu(p, γ), T=0.10-10 GK; deduced Q from obtained new value for 61Zn atomic mass, astrophysical reaction rates. Computed neutrino luminosity from the mass number A = 61 urca cooling source in accreted neutron-star crusts. Comparison to NON-SMOKER, TALYS codes results.

doi: 10.1103/PhysRevC.105.025804
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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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2022PU01      Phys.Rev. C 106, L012801 (2022)

D.Puentes, Z.Meisel, G.Bollen, A.Hamaker, C.Langer, E.Leistenschneider, C.Nicoloff, W.-J.Ong, M.Redshaw, R.Ringle, C.S.Sumithrarachchi, J.Surbrook, A.A.Valverde, I.T.Yandow

High-precision mass measurement of 24Si and a refined determination of the rp process at the A=22 waiting point

ATOMIC MASSES 24Si; measured time-of-flight ion Ramsey cyclotron resonance using Low Energy Beam and Ion Trap (LEBIT) facility at NSCL-MSU; deduced precise mass excess of 24Si using and compared with evaluated data in AME2020, effect on the determination of the rp process at 22Mg waiting point. 24Si produced in 9Be(28Si, X), E=160 MeV/nucleon, followed by separation of fragments using A1900 separator, and magnetic dipole mass separator.

NUCLEAR REACTIONS 23Al(p, γ)24Si, T=0.1-1.1 GK; deduced astrophysical reaction rates using resonance levels in 24Si, spectroscopic factors, Γγ and Γp from experimental data and NUSHELLX shell-model calculations. Comparison with literature results for 23Al(p, γ)24Si, 22Mg(p, γ)23Al and 22Mg(α, p)25Al reactions. 22Mg(α, p), T=0.6-1.9 GK; deduced (α, p) flow as function of temperature, onset temperature of the (α, p) process at the 22Mg waiting point to a precision of 9%. Relevance to rp process.

doi: 10.1103/PhysRevC.106.L012801
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2021GA01      Nucl.Instrum.Methods Phys.Res. A985, 164603 (2021)

P.Gastis, G.Perdikakis, G.P.A.Berg, A.C.Dombos, A.Estrade, A.Falduto, M.Horoi, S.N.Liddick, S.Lipschutz, S.Lyons, F.Montes, A.Palmisano, J.Pereira, J.S.Randhawa, T.Redpath, M.Redshaw, J.Schmitt, J.R.Sheehan, M.K.Smith, P.Tsintari, A.C.C.Villari, K.Wang, R.G.T.Zegers

A technique for the study of (p, n) reactions with unstable isotopes at energies relevant to astrophysics

NUCLEAR REACTIONS 1H(40Ar, n), E=3.52 MeV/nucleon; measured reaction products, En, In; deduced σ. Comparison with available data.

doi: 10.1016/j.nima.2020.164603
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2704.


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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2021SU04      Phys.Rev. C 103, 014323 (2021)

J.Surbrook, G.Bollen, M.Brodeur, A.Hamaker, D.Perez-Loureiro, D.Puentes, C.Nicoloff, M.Redshaw, R.Ringle, S.Schwarz, C.S.Sumithrarachchi, L.J.Sun, A.A.Valverde, A.C.C.Villari, C.Wrede, I.T.Yandow

First Penning trap mass measurement of 36Ca

ATOMIC MASSES 36Ca; measured masses of 36Ca+ and 36Ca2+ by the time-of-flight ion cyclotron resonance method using the LEBIT 9.4 T Penning-trap facility at NSCL-MSU; deduced mass excess and compared with AME2016 evaluation; interpreted result in the context of the isobaric multiplet mass equation (IMME) and a new ab initio derived calculation that extends the IMME with excellent agreement in the A=36, T=2 isobaric multiplet with the quadratic IMME, and only qualitative agreement with the generalized IMME (GIMME) predictions. Radioactive beam of 36Ca produced in 9Be(40Ca, X), E=140 MeV/nucleon at the Coupled Cyclotron Facility, followed by selection and purification by A1900 fragment separator.

doi: 10.1103/PhysRevC.103.014323
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2020PU02      Phys.Rev. C 101, 064309 (2020)

D.Puentes, G.Bollen, M.Brodeur, M.Eibach, K.Gulyuz, A.Hamaker, C.Izzo, S.M.Lenzi, M.MacCormick, M.Redshaw, R.Ringle, R.Sandler, S.Schwarz, P.Schury, N.A.Smirnova, J.Surbrook, A.A.Valverde, A.C.C.Villari, I.T.Yandow

High-precision mass measurements of the isomeric and ground states of 44V: Improving constraints on the isobaric multiplet mass equation parameters of the A=44, 0+ quintet

ATOMIC MASSES 44,44mV; measured cyclotron frequencies, mass excesses of ground and isomeric state using the time-of-flight ion cyclotron resonance method with the Penning trap mass spectrometer LEBIT of NSCL-MSU. 44V beam was produced in 9Be(58Ni, X), E=160 MeV/nucleon reaction and purified in the A1900 Fragment Separator. 44V; deduced levels, J, π, energy of the isomeric state, S(p). 44Cr; discussed β+ and proton decay of 44Cr and constraint on its mass. 44V, 44Sc, 44Ti; analyzed coefficients of quadratic isobaric multiplet mass equation (IMME) coefficients, mirror and triplet energy differences of T=1 triplet as a function of spin. A=42-58; analyzed experimental and theoretical coefficients of the lowest triplets in the pf shell for even-A nuclei. Comparison with previous experimental values, and with theoretical predictions.

doi: 10.1103/PhysRevC.101.064309
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Data from this article have been entered in the XUNDL database. For more information, click here.


2019SA36      Phys.Rev. C 100, 014308 (2019)

R.Sandler, G.Bollen, J.Dissanayake, M.Eibach, K.Gulyuz, A.Hamaker, C.Izzo, X.Mougeot, D.Puentes, F.G.A.Quarati, M.Redshaw, R.Ringle, I.Yandow

Direct determination of the 138La β-decay Q value using Penning trap mass spectrometry

ATOMIC MASSES 138La, 138Ce, 138Ba, 136Xe; measured cyclotron frequency ratios, time-of-flight ion cyclotron resonance for 138La using Penning trap mass spectrometry at LEBIT-NSCL-MSU facility; deduced atomic mass excesses. Comparison with AME-2016 evaluation.

RADIOACTIVITY 138La(β-), (EC); 138Ce(2EC); deduced Q values; calculated 138La β-decay curve, experimental shape factor, 138La ϵ decay probability ratios for K, L, and M shells. Comparison with previous measurements.

doi: 10.1103/PhysRevC.100.014308
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2019SA39      Phys.Rev. C 100, 024309 (2019)

R.Sandler, G.Bollen, N.D.Gamage, A.Hamaker, C.Izzo, D.Puentes, M.Redshaw, R.Ringle, I.Yandow

Investigation of the potential ultralow Q-value β-decay candidates 89Sr and 139Ba using Penning trap mass spectrometry

ATOMIC MASSES 89Y, 139La; measured cyclotron frequency ratios, and mass excesses using LEBIT facility at NSCL-MSU, with 85,87Rb as references for 89Y and 136Xe for 139La; deduced Q(β-) values for 89Sr to 89Y and 139Ba to 139La decays. Comparison with AME-2016 values. Discussed potential ultra-low Q values for decay to excited states in 89Y and 139La.

doi: 10.1103/PhysRevC.100.024309
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2019SU25      Hyperfine Interactions 240, 65 (2019)

J.Surbrook, M.MacCormick, G.Bollen, M.Brodeur, M.Eibach, K.Gulyuz, A.Hamaker, C.Izzo, S.M.Lenzi, D.Puentes, M.Redshaw, R.Ringle, R.Sandler, S.Schwarz, P.Schury, N.Smirnova, C.Sumithrarachchi, A.A.Valverde, A.C.C.Villari, I.T.Yandow

Precision mass measurements of 44V and 44mV for nucleon-nucleon interaction studies

ATOMIC MASSES 44V, 44mV; measured frequencies, TOF; deduced masses. Penning trap mass spectrometry in the LEBIT 9.4 T Penning trap at the National Superconducting Cyclotron Laboratory at Michigan State University.

doi: 10.1007/s10751-019-1602-y
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2018IZ01      Phys.Rev. C 97, 014309 (2018)

C.Izzo, G.Bollen, M.Brodeur, M.Eibach, K.Gulyuz, J.D.Holt, J.M.Kelly, M.Redshaw, R.Ringle, R.Sandler, S.Schwarz, S.R.Stroberg, C.S.Sumithrarachchi, A.A.Valverde, A.C.C.Villari

Precision mass measurements of neutron-rich Co isotopes beyond N=40

ATOMIC MASSES 68,69Co; measured time-of-flight ion cyclotron resonances (TOF-ICR), mass excesses using LEBIT Penning trap system at NSCL-MSU facility. Comparison with AME-2016 values. Systematics of S(2n) values in N=36-44 Fe, Co, Ni and Cu nuclides. Discussed low- and high-spin isomers in 68Co and 69Co, and concluded the main contribution from the high-spin activities.

RADIOACTIVITY 68,69Co(β-)[from 9Be(76Ge, X), E=130 MeV/nucleon followed by fragment selection using A1900 fragment separator]; measured Eγ, Iγ from the decay of 68Co. 68,69Co; calculated levels, J, π by ab initio approach using the valence-space in-medium similarity renormalization group (VS-IMSRG) framework based on two-nucleon (NN) and three-nucleon (3N) forces from chiral effective field theory; discussed energy ordering of the ground state and isomer.

doi: 10.1103/PhysRevC.97.014309
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2018ON01      Phys.Rev. C 98, 065803 (2018)

W.-J.Ong, A.A.Valverde, M.Brodeur, G.Bollen, M.Eibach, K.Gulyuz, A.Hamaker, C.Izzo, D.Puentes, M.Redshaw, R.Ringle, R.Sandler, S.Schwarz, C.S.Sumithrarachchi, J.Surbrook, A.C.C.Villari, I.T.Yandow

Mass measurement of 51Fe for the determination of the 51Fe(p, γ)52Co reaction rate

ATOMIC MASSES 51Fe; measured time of flight, cyclotron frequency ratios, and mass excess using the Penning trap of LEBIT-NSCL. 52Co; deduced S(p). Comparison with data in AME-2016 evaluation.

NUCLEAR REACTIONS 51Fe(p, γ), T9=0.1-10; calculated astrophysical reaction rates; deduced REACLIB fits at 0.1-10 GK.

NUCLEAR STRUCTURE 52Co; calculated levels in the unbound region from 1560 to 3989 keV, proton resonances, J, π, Γp, Γγ, spectroscopic factors, using shell model with the GXPF1A interaction.

doi: 10.1103/PhysRevC.98.065803
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2018VA01      Phys.Rev.Lett. 120, 032701 (2018)

A.A.Valverde, M.Brodeur, G.Bollen, M.Eibach, K.Gulyuz, A.Hamaker, C.Izzo, W.-J.Ong, D.Puentes, M.Redshaw, R.Ringle, R.Sandler, S.Schwarz, C.S.Sumithrarachchi, J.Surbrook, A.C.C.Villari, I.T.Yandow

High-Precision Mass Measurement of 56Cu and the Redirection of the rp-Process Flow

ATOMIC MASSES 56Cu; measured time-of-flight ion cyclotron resonance; deduced cyclotron frequency ratios, mass excess. Comparison with AME2016 and available data.

doi: 10.1103/PhysRevLett.120.032701
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2017KA53      Phys.Rev. C 96, 044321 (2017)

R.M.E.B.Kandegedara, G.Bollen, M.Eibach, N.D.Gamage, K.Gulyuz, C.Izzo, M.Redshaw, R.Ringle, R.Sandler, A.A.Valverde

β-decay Q values among the A = 50 Ti-V-Cr isobaric triplet and atomic masses of 46, 47, 49, 50Ti, 50, 51V, and 50, 52-54Cr

ATOMIC MASSES 46,47,49,50Ti, 50,51V, 50,52,53,54Cr; measured cyclotron frequency ratios with respect to 48Ti using Low Energy Beam and Ion Trap (LEBIT) facility at NSCL-MSU; deduced mass excesses and compared with AME-2016 values. 48,49,50Ti; deduced S(n) and compared with experimental values from (n, γ).

RADIOACTIVITY 50V(EC), (β-); 50Cr(2EC); deduced Q values from mass excesses and compared with AME-2016 values.

doi: 10.1103/PhysRevC.96.044321
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2016EI01      Phys.Rev. C 94, 015502 (2016)

M.Eibach, G.Bollen, K.Gulyuz, C.Izzo, M.Redshaw, R.Ringle, R.Sandler, A.A.Valverde

Double resonant enhancement in the neutrinoless double-electron capture of 190Pt

ATOMIC MASSES 190,194Pt, 186,190Os; measured ratio of the cyclotron frequencies using LEBIT Penning trap mass spectrometer at NSCL-MSU; deduced precise Q value for ϵϵ decay of 190Pt. Comparison with AME-2012 evaluation.

RADIOACTIVITY 190Pt(2EC); measured precise Q value from mass measurements of 190Pt and 190Os; deduced parameters of the resonantly enhanced 0νϵϵ decays to excited states in 190Os. Comparison of Q value with AME-2012 evaluation.

doi: 10.1103/PhysRevC.94.015502
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2016GA33      Phys.Rev. C 94, 025505 (2016)

N.D.Gamage, G.Bollen, M.Eibach, K.Gulyuz, C.Izzo, R.M.E.B.Kandegedara, M.Redshaw, R.Ringle, R.Sandler, A.A.Valverde

Precise determination of the 113Cd fourth-forbidden non-unique β-decay Q value

ATOMIC MASSES 113Cd, 113,115In, 112Cd; measured cyclotron frequency ratios of 113In/115In, 113In/112Cd, 113Cd/115In, and 113Cd/112Cd by time-of-flight ion-cyclotron-resonance (TOF-ICR) technique using LEBIT Penning trap of NSCL-MSU facility. 113Cd, 113In, 112Cd; deduced mass excesses, precise Q value for the fourth-forbidden β- transition from the decay of 113Cd g.s. Comparison with previous experimental results and AME-12 evaluated data. Relevance to ββ decay searches in cadmium and other isotopes.

doi: 10.1103/PhysRevC.94.025505
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2016GU02      Phys.Rev.Lett. 116, 012501 (2016)

K.Gulyuz, G.Bollen, M.Brodeur, R.A.Bryce, K.Cooper, M.Eibach, C.Izzo, E.Kwan, K.Manukyan, D.J.Morrissey, O.Naviliat-Cuncic, M.Redshaw, R.Ringle, R.Sandler, S.Schwarz, C.S.Sumithrarachchi, A.A.Valverde, A.C.C.Villari

High Precision Determination of the β Decay QEC Value of 11C and Implications on the Tests of the Standard Model

ATOMIC MASSES 11C, 10,11B; measured TOF ion cyclotron resonance spectra; deduced mass excess values. Comparison with AME2012 evaluation.

doi: 10.1103/PhysRevLett.116.012501
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Data from this article have been entered in the XUNDL database. For more information, click here.


2015EI01      Phys.Rev. C 92, 045502 (2015)

M.Eibach, G.Bollen, M.Brodeur, K.Cooper, K.Gulyuz, C.Izzo, D.J.Morrissey, M.Redshaw, R.Ringle, R.Sandler, S.Schwarz, C.S.Sumithrarachchi, A.A.Valverde, A.C.C.Villari

Determination of the QEC values of the T=1/2 mirror nuclei 21Na and 29P at LEBIT

ATOMIC MASSES 21Na, 29P; measured cyclotron frequency ratios of 21Ne, 21Na and 29P, 12C with TOF-ICR technique using LEBIT Penning trap mass spectrometer at NSCL-MSU; deduced Q(EC) values, Ft and Vud for 21Na and 29P decays. Comparison with previous experimental values and AME-2012.

RADIOACTIVITY 21Na, 29P(β+), (EC)[from 9Be(36Ar, X), E=150 MeV/nucleon using A1900 separator at NSCL-MSU]; measured Q(EC) using LEBIT Penning trap mass spectrometer. Comparison with previous experimental values.

doi: 10.1103/PhysRevC.92.045502
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2015GU09      Phys.Rev. C 91, 055501 (2015)

K.Gulyuz, J.Ariche, G.Bollen, S.Bustabad, M.Eibach, C.Izzo, S.J.Novario, M.Redshaw, R.Ringle, R.Sandler, S.Schwarz, A.A.Valverde

Determination of the direct double-β Q value of 96Zr and atomic masses of 90-92, 94, 96Zr and 92, 94-98, 100Mo

ATOMIC MASSES 90,91,92,94,96Zr, 92,94,95,96,97,98,100Mo; measured cyclotron frequency ratios, mass excesses using LEBIT Penning trap mass spectrometer facility at NSCL-MSU; deduce Q value for double-β decay of 96Zr. Relevance to neutrinoless double-β decay of 96Zr.

doi: 10.1103/PhysRevC.91.055501
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2015VA08      Phys.Rev.Lett. 114, 232502 (2015)

A.A.Valverde, G.Bollen, M.Brodeur, R.A.Bryce, K.Cooper, M.Eibach, K.Gulyuz, C.Izzo, D.J.Morrissey, M.Redshaw, R.Ringle, R.Sandler, S.Schwarz, C.S.Sumithrarachchi, A.C.C.Villari

First Direct Determination of the Superallowed β-Decay QEC Value for 14O

RADIOACTIVITY 14O(EC), (β+) [from Be(16O, X)14O, E=150 MeV/nucleon]; measured time-of-flight cyclotron resonance, frequency ratios; deduced T1/2, ground-state Q-value, log ft. Comparison with available data.

doi: 10.1103/PhysRevLett.114.232502
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2013BU12      Phys.Rev. C 88, 022501 (2013)

S.Bustabad, G.Bollen, M.Brodeur, D.L.Lincoln, S.J.Novario, M.Redshaw, R.Ringle, S.Schwarz, A.A.Valverde

First direct determination of the 48Ca double-β decay Q value

ATOMIC MASSES 48Ca, 48Ti; measured time-of-flight, cyclotron resonance frequencies ratios using LEBIT Penning-trap mass spectrometer at NSCL, MSU facility; deduced Q value for double beta decay of 48Ca. Comparison with ISOLTRAP measurements, and with AME-12.

RADIOACTIVITY 48Ca(2β-); measured Q value for double β decay using LEBIT Penning-trap spectrometer; deduced phase factors for 2νββ and 0νββ decay modes.

doi: 10.1103/PhysRevC.88.022501
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2013BU17      Phys.Rev. C 88, 035502 (2013)

S.Bustabad, G.Bollen, M.Brodeur, D.L.Lincoln, S.J.Novario, M.Redshaw, R.Ringle, S.Schwarz

Examination of the possible enhancement of neutrinoless double-electron capture in 78Kr

ATOMIC MASSES 78Se, 78Kr; measured cyclotron frequency ratios using LEBIT Penning-trap spectrometer at NSCL-MSU facility; deduced Q value for 2ϵ decay mode. Comparison with AME-12.

RADIOACTIVITY 78Kr(2EC); measured Q value using LEBIT system at NSCL-MSU facility; deduced resonance parameter and enhancement factor, exclusion of excited states in 78Se for resonantly enhanced 0νECEC mode.

doi: 10.1103/PhysRevC.88.035502
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2013LI01      Phys.Rev.Lett. 110, 012501 (2013)

D.L.Lincoln, J.D.Holt, G.Bollen, M.Brodeur, S.Bustabad, J.Engel, S.J.Novario, M.Redshaw, R.Ringle, S.Schwarz

First Direct Double-β Decay Q-Value Measurement of 82Se in Support of Understanding the Nature of the Neutrino

ATOMIC MASSES 82Kr, 82Se; measured time-of-flight cyclotron resonance , cyclotron resonance frequency; deduced Q-value. Penning trap measurement.

doi: 10.1103/PhysRevLett.110.012501
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2012RE17      Phys.Rev. C 86, 041306 (2012)

M.Redshaw, G.Bollen, M.Brodeur, S.Bustabad, D.L.Lincoln, S.J.Novario, R.Ringle, S.Schwarz

Atomic mass and double-β-decay Q value of 48Ca

ATOMIC MASSES 48Ca; measured time of flight, cyclotron resonance frequency using LEBIT Penning trap mass spectrometer at NSCL facility; deduced atomic mass, mass excess, Q value for ββ decay. Comparison with previous experimental studies, and with mass evaluations.

doi: 10.1103/PhysRevC.86.041306
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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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2010MO03      Phys.Rev. C 81, 032501 (2010)

B.J.Mount, M.Redshaw, E.G.Myers

Double-β-decay Q values of 74Se and 76Ge

ATOMIC MASSES 74,76Se, 74,76Ge; measured cyclotron frequencies in a Penning-trap system relative to 84Kr, atomic masses and systematic shifts for ion pairs. Comparisons with previous measurements and with AME-2003.

RADIOACTIVITY 74Se(2EC), 76Ge(2β-); deduced Q values from measured masses. Discussed resonant enhancement for neutrinoless double-electron capture decay of 74Se.

doi: 10.1103/PhysRevC.81.032501
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2010MO29      Phys.Rev. A 81, 064501 (2010)

B.J.Mount, H.S.P.Muller, M.Redshaw, E.G.Myers

Mass of 17O from Penning-trap mass spectrometry and molecular spectroscopy: A precision test of the Dunham-Watson model in carbon monoxide

ATOMIC MASSES 17O; measured average cyclotron frequency ratios; deduced mass. Florida State University precision Penning-trap mass spectrometer, Dunham-Watson model.

doi: 10.1103/PhysRevA.81.064501
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2010MO30      Phys.Rev. A 82, 042513 (2010)

B.J.Mount, M.Redshaw, E.G.Myers

Atomic masses of 6Li, 23Na, 39, 41K, 85, 87Rb, and 133Cs

ATOMIC MASSES 6Li, 23Na, 39,41K, 85,87Rb, 133Cs; measured cyclotron frequency ratios of pairs of ions simultaneously trapped in a Penning trap; deduced mass. Comparison with AME2003 and other experimental results.

doi: 10.1103/PhysRevA.82.042513
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2009MO23      Phys.Rev.Lett. 103, 122502 (2009)

B.J.Mount, M.Redshaw, E.G.Myers

Q Value of 115In → 115Sn(3/2+): The Lowest Known Energy β Decay

ATOMIC MASSES 115In, 115Sn; measured cyclotron frequency ratios with Penning Trap mass spectrometer; deduced atomic masses, 115In-115Sn Q-value.

doi: 10.1103/PhysRevLett.103.122502
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2009RE03      Phys.Rev. A 79, 012506 (2009)

M.Redshaw, B.J.Mount, E.G.Myers

Improved atomic masses of 84, 86Kr and 129, 132Xe

ATOMIC MASSES 84,86Kr, 129,132Xe; measured atomic masses using a cryogenic penning trap.

doi: 10.1103/PhysRevA.79.012506
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2009RE07      Phys.Rev.Lett. 102, 212502 (2009)

M.Redshaw, B.J.Mount, E.G.Myers, F.T.Avignone III

Masses of 130Te and 130Xe and Double-β-Decay Q Value of 130Te

ATOMIC MASSES 130Te, 130Xe; Measured atomic masses using precision cryogenic Penning-trap spectrometer; Deduced Q-value for 2β-decay. Compared with energy calibration of CUORICINO and CUORE experiments.

doi: 10.1103/PhysRevLett.102.212502
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2009RE15      Phys.Rev. A 79, 012507 (2009)

M.Redshaw, B.J.Mount, E.G.Myers

Penning-trap measurement of the atomic masses of 18O and 19F with uncertainties < 0.1 parts per 109

ATOMIC MASSES 18O, 19F; measured atomic masses using a cryogenic penning trap.

doi: 10.1103/PhysRevA.79.012507
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2008RE16      Phys.Rev.Lett. 100, 093002 (2008)

M.Redshaw, J.McDaniel, E.G.Myers

Dipole Moment of PH+ and the Atomic Masses of 28Si, 31P by Comparing Cyclotron Frequencies of Two Ions Simultaneously Trapped in a Penning Trap

ATOMIC MASSES 28Si, 31P; measured the cyclotron frequency ratios; deduced atomic masses. Cryogenic penning trap.

doi: 10.1103/PhysRevLett.100.093002
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2007RE03      Phys.Rev.Lett. 98, 053003 (2007)

M.Redshaw, E.Wingfield, J.McDaniel, E.G.Myers

Mass and Double-Beta-Decay Q Value of 136Xe

ATOMIC MASSES 136Xe; measured mass; deduced Q-value for 2β-decay.

doi: 10.1103/PhysRevLett.98.053003
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2006RE19      Int.J. Mass Spectrom. 251, 125 (2006)

M.Redshaw, J.McDaniel, W.Shi, E.G.Myers

Mass ratio of two ions in a Penning trap by alternating between the trap center and a large cyclotron orbit

ATOMIC MASSES 13C, 14N, 28Si, 31P; measured masses and ratio of ionic masses using Penning trap measurement.

doi: 10.1016/j.ijms.2006.01.015
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2005SH38      Phys.Rev. A 72, 022510 (2005)

W.Shi, M.Redshaw, E.G.Myers

Atomic masses of 32, 33S, 84, 86Kr, and 129, 132Xe with uncertainties ≤ 0.1 ppb

ATOMIC MASSES 32,33S, 84,86Kr, 129,132Xe; measured masses. Penning trap.

doi: 10.1103/PhysRevA.72.022510
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