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Title: Mass measurements of neutron-rich gallium isotopes refine production of nuclei of the first r -process abundance peak in neutron-star merger calculations

Journal Article · · Physical Review C
ORCiD logo [1];  [2];  [3];  [4];  [5];  [6];  [6];  [7];  [8];  [2];  [9];  [10];  [11];  [12];  [6];  [13];  [14];  [15];  [10];  [9] more »;  [16];  [17];  [9];  [3];  [10];  [18];  [2];  [19];  [20];  [2];  [21];  [22];  [23];  [23];  [13];  [19] « less
  1. Justus-Liebig-Univ., GieBen (Germany); TRIUMF, Vancouver, BC (Canada); Univ. of Edinburgh (United Kingdom)
  2. Justus-Liebig-Univ., GieBen (Germany); GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
  3. GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany); Technische Univ. Darmstadt (Germany)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); JINA-CEE, East Lansing, MI (United States)
  5. Simon Fraser Univ., Burnaby, BC (Canada)
  6. TRIUMF, Vancouver, BC (Canada)
  7. TRIUMF, Vancouver, BC (Canada); Ruprecht-Karls-Univ., Heidelberg (Germany)
  8. TRIUMF, Vancouver, BC (Canada); McGill Univ., Montreal, QC (Canada)
  9. TRIUMF, Vancouver, BC (Canada); Univ. of British Columbia, Vancouver, BC (Canada)
  10. TRIUMF, Vancouver, BC (Canada); Univ. of Victoria, BC (Canada)
  11. TRIUMF, Vancouver, BC (Canada); Univ. of York (United Kingdom)
  12. Univ. of Manitoba, Winnipeg, MB (Canada)
  13. Justus-Liebig-Univ., GieBen (Germany)
  14. TRIUMF, Vancouver, BC (Canada); Max-Planck-Institut für Kernphysik Heidelberg (Germany)
  15. TRIUMF, Vancouver, BC (Canada); Univ. of Manitoba, Winnipeg, MB (Canada)
  16. TRIUMF, Vancouver, BC (Canada); Northwestern Univ., Evanston, IL (United States)
  17. Colorado School of Mines, Golden, CO (United States)
  18. TRIUMF, Vancouver, BC (Canada); Ruprecht-Karls-Univ. Heidelberg (Germany)
  19. Michigan State Univ., East Lansing, MI (United States)
  20. JINA-CEE, East Lansing, MI (United States)
  21. GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany); Technische Univ. Darmstadt (Germany); Univ. of Minnesota, Minneapolis, MN (United States)
  22. TRIUMF, Vancouver, BC (Canada); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  23. Univ. of Calgary, AB (Canada)
+ Show Author Affiliations

We report mass measurements of neutron-rich Ga isotopes 80–85Ga with TRIUMF's Ion Trap for Atomic and Nuclear science. The measurements determine the masses of 80–83Ga in good agreement with previous measurements. Here, the masses of 84Ga and 85Ga were measured for the first time. Uncertainties between 25 and 48 keV were reached. The new mass values reduce the nuclear uncertainties associated with the production of A ≈ 84 isotopes by the r-process for astrophysical conditions that might be consistent with a binary neutron star (BNS) merger producing a blue kilonova. Our nucleosynthesis simulations confirm that BNS merger may contribute to the first abundance peak under moderate neutron-rich conditions with electron fractions Ye = 0.35–0.38.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE; NSF; Canadian-UK Foundation; German Inst. DFG; BMBF; Helmholtz Association through NAVI
Grant/Contract Number:
AC52-06NA25396; 89233218CNA000001; SC0017649
OSTI ID:
1603982
Report Number(s):
LA-UR--18-28439
Journal Information:
Physical Review C, Journal Name: Physical Review C Journal Issue: 2 Vol. 101; ISSN PRVCAN; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (82)

The MR-TOF-MS isobar separator for the TITAN facility at TRIUMF journal May 2015
Time-of-flight mass spectrometers with multiply reflected ion trajectories journal April 1990
Nuclear mass formula with Bogolyubov-enhanced shell-quenching: application to r-process journal October 1996
Nuclear ground-state masses and deformations: FRDM(2012) journal May 2016
Ion-optical design of a high-performance multiple-reflection time-of-flight mass spectrometer and isobar separator journal May 2015
Dynamical time focus shift in multiple-reflection time-of-flight mass spectrometers journal January 2017
Composite uranium carbide targets at TRIUMF: Development and characterization with SEM, XRD, XRF and L-edge densitometry journal September 2013
TITAN's digital RFQ ion beam cooler and buncher, operation and performance
  • Brunner, T.; Smith, M. J.; Brodeur, M.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 676 https://doi.org/10.1016/j.nima.2012.02.004
journal June 2012
A high-performance multiple-reflection time-of-flight mass spectrometer and isobar separator for the research with exotic nuclei
  • Dickel, T.; Plaß, W. R.; Becker, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 777 https://doi.org/10.1016/j.nima.2014.12.094
journal March 2015
Resonant Ionization Laser Ion Source (RILIS) off-line developments on Ga, Al and Ca journal August 2013
The r-process of stellar nucleosynthesis: Astrophysics and nuclear physics achievements and mysteries journal September 2007
The impact of individual nuclear properties on r -process nucleosynthesis journal January 2016
Nucleosynthesis, neutrino bursts and γ-rays from coalescing neutron stars journal July 1989
A ‘kilonova’ associated with the short-duration γ-ray burst GRB 130603B journal August 2013
Spectroscopic identification of r-process nucleosynthesis in a double neutron-star merger journal October 2017
A kilonova as the electromagnetic counterpart to a gravitational-wave source journal October 2017
Origin of the heavy elements in binary neutron-star mergers from a gravitational-wave event journal October 2017
A possible macronova in the late afterglow of the long–short burst GRB 060614 journal June 2015
A luminous blue kilonova and an off-axis jet from a compact binary merger at z = 0.1341 journal October 2018
Identification of strontium in the merger of two neutron stars journal October 2019
The first direct double neutron star merger detection: Implications for cosmic nucleosynthesis journal July 2018
Commissioning and initial operation of a radioactive beam ion source at ISAC journal February 2000
Sensitivity studies for the main r process: β-decay rates journal April 2014
Sensitivity studies for the main r process: nuclear masses journal April 2014
An ion guide laser ion source for isobar-suppressed rare isotope beams journal March 2014
The tidal disruption of neutron stars by black holes in close binaries journal November 1976
Nucleosynthesis in neutron-rich supernova ejecta journal October 1985
Isotopic r-process abundances and nuclear structure far from stability - Implications for the r-process mechanism journal January 1993
Black-hole-neutron-star collisions journal September 1974
Discovery of a pulsar in a binary system journal January 1975
Transient Events from Neutron Star Mergers journal November 1998
[CLC][ITAL]r[/ITAL][/CLC]-Process in Neutron Star Mergers journal November 1999
Grb 080503: Implications of a Naked Short Gamma-Ray Burst Dominated by Extended Emission journal April 2009
Systematics of Dynamical mass Ejection, Nucleosynthesis, and Radioactively Powered Electromagnetic Signals from Neutron-Star Mergers journal July 2013
THE ROLE OF FISSION IN NEUTRON STAR MERGERS AND ITS IMPACT ON THE r -PROCESS PEAKS journal July 2015
THE r -PROCESS NUCLEOSYNTHESIS IN THE VARIOUS JET-LIKE EXPLOSIONS OF MAGNETOROTATIONAL CORE-COLLAPSE SUPERNOVAE journal September 2015
Neutrino-Driven Winds in the Aftermath of a Neutron star Merger: Nucleosynthesis and Electromagnetic Transients journal October 2015
r-PROCESS LANTHANIDE PRODUCTION AND HEATING RATES IN KILONOVAE journal December 2015
High-performance multiple-reflection time-of-flight mass spectrometers for research with exotic nuclei and for analytical mass spectrometry journal November 2015
The jina Reaclib Database: its Recent Updates and Impact on Type-I X-Ray Bursts journal June 2010
The impact of uncertain nuclear masses near closed shells on the r -process abundance pattern journal February 2015
The NUBASE2016 evaluation of nuclear properties journal March 2017
The AME2016 atomic mass evaluation (I). Evaluation of input data; and adjustment procedures journal March 2017
The AME2016 atomic mass evaluation (II). Tables, graphs and references journal March 2017
Electromagnetic Transients Powered by Nuclear Decay in the Tidal Tails of Coalescing Compact Binaries journal July 2011
MAGNETOROTATIONALLY DRIVEN SUPERNOVAE AS THE ORIGIN OF EARLY GALAXY r -PROCESS ELEMENTS? journal April 2012
AN r -PROCESS KILONOVA ASSOCIATED WITH THE SHORT-HARD GRB 130603B journal August 2013
The Light Curve of the Macronova Associated with the Long–Short Burst grb 060614 journal September 2015
Uncertainties in s-process nucleosynthesis in low-mass stars determined from Monte Carlo variations journal May 2018
Strong one-neutron emission from two-neutron unbound states in β decays of the r -process nuclei Ga 86 , 87 journal September 2019
Microscopic mass formulas journal July 1995
New calculations of gross β -decay properties for astrophysical applications: Speeding-up the classical r process journal May 2003
Structure of 80 Ge revealed by the β decay of isomeric states in 80 Ga: Triaxiality in the vicinity of 78 Ni journal May 2013
Further explorations of Skyrme-Hartree-Fock-Bogoliubov mass formulas. XIII. The 2012 atomic mass evaluation and the symmetry coefficient journal August 2013
Impact of individual nuclear masses on r -process abundances journal September 2015
Nuclear robustness of the r process in neutron-star mergers journal November 2015
Large-scale evaluation of β -decay rates of r -process nuclei with the inclusion of first-forbidden transitions journal February 2016
Reexamining Gamow-Teller decays near Ni 78 journal April 2016
Pygmy Gamow-Teller resonance in the N = 50 region: New evidence from staggering of β -delayed neutron-emission probabilities journal May 2017
Fission properties of superheavy nuclei for r -process calculations journal March 2018
β -delayed neutron emission from Ga 85 journal May 2018
Quenching of the N = 32 neutron shell closure studied via precision mass measurements of neutron-rich vanadium isotopes journal August 2018
High-resolution, accurate multiple-reflection time-of-flight mass spectrometry for short-lived, exotic nuclei of a few events in their ground and low-lying isomeric states journal June 2019
Evolution of the N = 50 Shell Gap Energy towards Ni 78 journal July 2008
New Half-lives of r -process Zn and Ga Isotopes Measured with Electromagnetic Separation journal September 2012
β -Decay Half-Lives of Co 76 , 77 , Ni 79 , 80 , and Cu 81 : Experimental Indication of a Doubly Magic Ni 78 journal July 2014
GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral journal October 2017
Binding Energy of Cu 79 : Probing the Structure of the Doubly Magic Ni 78 from Only One Proton Away journal November 2017
Dawning of the N = 32 Shell Closure Seen through Precision Mass Measurements of Neutron-Rich Titanium Isotopes journal February 2018
Fingerprints of Heavy-Element Nucleosynthesis in the Late-Time Lightcurves of Kilonovae journal February 2019
Electromagnetic counterparts of compact object mergers powered by the radioactive decay of r-process nuclei: Transients from compact object mergers journal June 2010
Swift and NuSTAR observations of GW170817: Detection of a blue kilonova journal October 2017
Sensitivity of the r-process to nuclear masses journal December 2012
The fundamental role of fission during r-process nucleosynthesis in neutron star mergers journal February 2015
Electromagnetic Signatures of Neutron Star Mergers in the Advanced LIGO Era journal October 2016
Physical Conditions for the r -process. I. Radioactive Energy Sources of Kilonovae journal November 2018
SkyNet: A Modular Nuclear Reaction Network Library journal December 2017
The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. III. Optical and UV Spectra of a Blue Kilonova from Fast Polar Ejecta journal October 2017
The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. IV. Detection of Near-infrared Signatures of r -process Nucleosynthesis with Gemini-South journal October 2017
The Emergence of a Lanthanide-rich Kilonova Following the Merger of Two Neutron Stars journal October 2017
Multi-messenger Observations of a Binary Neutron Star Merger journal October 2017
Gravitational Waves and Gamma-Rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A journal October 2017

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59 ≤ A ≤ 89
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
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r process