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

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. Murböck; 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

doi:10.1103/PhysRevC.104.065803

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

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. Murböck, W. S. Porter, R. Silwal, M. B. Smith, J. RinguetteT. Brunner, T. Dickel, I. Dillmann, G. Gwinner, M. MacCormick, M. P. Reiter, H. Schatz, N. A. Smirnova, J. Dilling, A. A. Kwiatkowski

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Abstract

We report precision mass measurements of neutron-deficient gallium isotopes approaching the proton drip line. The measurements of Ga60-63 performed with the TITAN multiple-reflection time-of-flight mass spectrometer provide a more than threefold improvement over the current literature mass uncertainty of Ga61 and mark the first direct mass measurement of Ga60. The improved precision of the Ga61 mass has important implications for the astrophysical rp process, as it constrains essential reaction Q values near the Zn60 waiting point. Based on calculations with a one-zone model, we demonstrate the impact of the improved mass data on prediction uncertainties of x-ray burst models. The first-time measurement of the Ga60 ground-state mass establishes the proton-bound nature of this nuclide, thus constraining the location of the proton drip line along this isotopic chain. Including the measured mass of Ga60 further enables us to extend the evaluated T=1 isobaric multiplet mass equation up to A=60.

Original language	English
Article number	065803
Journal	Physical Review C
Volume	104
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.104.065803
State	Published - Dec 2021
Externally published	Yes

Funding

We would like to thank the TRIUMF Beam Delivery and Resonant Ionization Laser Ion Source groups for their excellent support in the realization of this experiment. This work was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC), the Canada Foundation for Innovation (CFI), the Canada-UK Foundation, the Brazilian Conselho Nacional de Desenvolvimento Cient'fico e Technológico (CNPq) under Grant No. 249121/2013-1, the Helmholtz Association of German Research Centers through the Nuclear Astrophysics Virtual Institute (VH-VI-417), German Research Foundation (DFG) Grant No. SCHE 1969/2-1, the German Federal Ministry for Education and Research (BMBF) Grants No. 05P19RGFN1 and No. 05P21RGFN1, the Hessian Ministry for Science and Art through the LOEWE Center HICforFAIR, the JLU and GSI under the JLU-GSI strategic Helmholtz partnership agreement, the UKRI Science and Technology Facilities Council (STFC) Grant No. ST/P004008/1, the U.S. National Science Foundation under Grants No. PHY-1419765, No. PHY 14-30152 (Joint Institute for Nuclear Astrophysics JINA-CEE), No. PHY-1913554, and No. IN2P3/CNRS (France) via the ENFIA Master Project, the U.S. Department of Energy (DOE) Office of Science under Grant No. DE-SC0017649, and the Deutsche Forschungsgemeinschaft (DFG) under Grant No. FR 601/3-1. TRIUMF receives federal funding via the National Research Council of Canada (NRC).

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Paul, S. F., Bergmann, J., Cardona, J. D., Dietrich, K. A., Dunling, E., Hockenbery, Z., Hornung, C., Izzo, C., Jacobs, A., Javaji, A., Kootte, B., Lan, Y., Leistenschneider, E., Lykiardopoulou, E. M., Mukul, I., Murböck, T., Porter, W. S., Silwal, R., Smith, M. B., ... Kwiatkowski, A. A. (2021). Mass measurements of Ga 60-63 reduce x-ray burst model uncertainties and extend the evaluated T=1 isobaric multiplet mass equation. Physical Review C, 104(6), Article 065803. https://doi.org/10.1103/PhysRevC.104.065803

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

abstract = "We report precision mass measurements of neutron-deficient gallium isotopes approaching the proton drip line. The measurements of Ga60-63 performed with the TITAN multiple-reflection time-of-flight mass spectrometer provide a more than threefold improvement over the current literature mass uncertainty of Ga61 and mark the first direct mass measurement of Ga60. The improved precision of the Ga61 mass has important implications for the astrophysical rp process, as it constrains essential reaction Q values near the Zn60 waiting point. Based on calculations with a one-zone model, we demonstrate the impact of the improved mass data on prediction uncertainties of x-ray burst models. The first-time measurement of the Ga60 ground-state mass establishes the proton-bound nature of this nuclide, thus constraining the location of the proton drip line along this isotopic chain. Including the measured mass of Ga60 further enables us to extend the evaluated T=1 isobaric multiplet mass equation up to A=60.",

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

note = "Publisher Copyright: {\textcopyright} 2021 American Physical Society.",

year = "2021",

month = dec,

doi = "10.1103/PhysRevC.104.065803",

language = "English",

volume = "104",

journal = "Physical Review C",

issn = "2469-9985",

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Paul, SF, Bergmann, J, Cardona, JD, Dietrich, KA, Dunling, E, Hockenbery, Z, Hornung, C, Izzo, C, Jacobs, A, Javaji, A, Kootte, B, Lan, Y, Leistenschneider, E, Lykiardopoulou, EM, Mukul, I, Murböck, T, Porter, WS, Silwal, R, Smith, MB, Ringuette, J, Brunner, T, Dickel, T, Dillmann, I, Gwinner, G, MacCormick, M, Reiter, MP, Schatz, H, Smirnova, NA, Dilling, J & Kwiatkowski, AA 2021, 'Mass measurements of Ga 60-63 reduce x-ray burst model uncertainties and extend the evaluated T=1 isobaric multiplet mass equation', Physical Review C, vol. 104, no. 6, 065803. https://doi.org/10.1103/PhysRevC.104.065803

TY - JOUR

T1 - Mass measurements of Ga 60-63 reduce x-ray burst model uncertainties and extend the evaluated T=1 isobaric multiplet mass equation

AU - Paul, S. F.

AU - Bergmann, J.

AU - Cardona, J. D.

AU - Dietrich, K. A.

AU - Dunling, E.

AU - Hockenbery, Z.

AU - Hornung, C.

AU - Izzo, C.

AU - Jacobs, A.

AU - Javaji, A.

AU - Kootte, B.

AU - Lan, Y.

AU - Leistenschneider, E.

AU - Lykiardopoulou, E. M.

AU - Mukul, I.

AU - Murböck, T.

AU - Porter, W. S.

AU - Silwal, R.

AU - Smith, M. B.

AU - Ringuette, J.

AU - Brunner, T.

AU - Dickel, T.

AU - Dillmann, I.

AU - Gwinner, G.

AU - MacCormick, M.

AU - Reiter, M. P.

AU - Schatz, H.

AU - Smirnova, N. A.

AU - Dilling, J.

AU - Kwiatkowski, A. A.

PY - 2021/12

Y1 - 2021/12

N2 - We report precision mass measurements of neutron-deficient gallium isotopes approaching the proton drip line. The measurements of Ga60-63 performed with the TITAN multiple-reflection time-of-flight mass spectrometer provide a more than threefold improvement over the current literature mass uncertainty of Ga61 and mark the first direct mass measurement of Ga60. The improved precision of the Ga61 mass has important implications for the astrophysical rp process, as it constrains essential reaction Q values near the Zn60 waiting point. Based on calculations with a one-zone model, we demonstrate the impact of the improved mass data on prediction uncertainties of x-ray burst models. The first-time measurement of the Ga60 ground-state mass establishes the proton-bound nature of this nuclide, thus constraining the location of the proton drip line along this isotopic chain. Including the measured mass of Ga60 further enables us to extend the evaluated T=1 isobaric multiplet mass equation up to A=60.

AB - We report precision mass measurements of neutron-deficient gallium isotopes approaching the proton drip line. The measurements of Ga60-63 performed with the TITAN multiple-reflection time-of-flight mass spectrometer provide a more than threefold improvement over the current literature mass uncertainty of Ga61 and mark the first direct mass measurement of Ga60. The improved precision of the Ga61 mass has important implications for the astrophysical rp process, as it constrains essential reaction Q values near the Zn60 waiting point. Based on calculations with a one-zone model, we demonstrate the impact of the improved mass data on prediction uncertainties of x-ray burst models. The first-time measurement of the Ga60 ground-state mass establishes the proton-bound nature of this nuclide, thus constraining the location of the proton drip line along this isotopic chain. Including the measured mass of Ga60 further enables us to extend the evaluated T=1 isobaric multiplet mass equation up to A=60.

UR - http://www.scopus.com/inward/record.url?scp=85122545195&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.104.065803

DO - 10.1103/PhysRevC.104.065803

M3 - Article

AN - SCOPUS:85122545195

SN - 2469-9985

VL - 104

JO - Physical Review C

JF - Physical Review C

IS - 6

M1 - 065803

ER -

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

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