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

Reiter, M. P.; Ayet San Andrés, S.; Nikas, S.; Lippuner, J.; Andreoiu, C.; Babcock, C.; Barquest, B. R.; Bollig, J.; Brunner, T.; Dickel, T.; Dilling, J.; Dillmann, I.; Dunling, E.; Gwinner, G.; Graham, L.; Hornung, C.; Klawitter, R.; Kootte, B.; Kwiatkowski, A. A.; Lan, Y.; Lascar, D.; Leach, K. G.; Leistenschneider, E.; Martínez-Pinedo, G.; McKay, J. E.; Paul, S. F.; Plaß, W. R.; Roberts, L.; Schatz, H.; Scheidenberger, C.; Sieverding, A.; Steinbrügge, R.; Thompson, R.; Wieser, M. E.; Will, C.; Welch, D.

doi:10.1103/PhysRevC.101.025803

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

Abstract

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 Y_e = 0.35–0.38.

Authors:

^[1]; Ayet San Andrés, S. ^[2]; Nikas, S. ^[3]; Lippuner, J. ^[4]; Andreoiu, C. ^[5]; Babcock, C. ^[6]; Barquest, B. R. ^[6]; Bollig, J. ^[7]; Brunner, T. ^[8]; Dickel, T. ^[2]; Dilling, J. ^[9]; Dillmann, I. ^[10]; Dunling, E. ^[11]; Gwinner, G. ^[12]; Graham, L. ^[6]; Hornung, C. ^[13]; Klawitter, R. ^[14]; Kootte, B. ^[15]; Kwiatkowski, A. A. ^[10]; Lan, Y. ^[9] more »

Justus-Liebig-Univ., GieBen (Germany); TRIUMF, Vancouver, BC (Canada); Univ. of Edinburgh (United Kingdom)
Justus-Liebig-Univ., GieBen (Germany); GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany); Technische Univ. Darmstadt (Germany)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); JINA-CEE, East Lansing, MI (United States)
Simon Fraser Univ., Burnaby, BC (Canada)
TRIUMF, Vancouver, BC (Canada)
TRIUMF, Vancouver, BC (Canada); Ruprecht-Karls-Univ., Heidelberg (Germany)
TRIUMF, Vancouver, BC (Canada); McGill Univ., Montreal, QC (Canada)
TRIUMF, Vancouver, BC (Canada); Univ. of British Columbia, Vancouver, BC (Canada)
TRIUMF, Vancouver, BC (Canada); Univ. of Victoria, BC (Canada)
TRIUMF, Vancouver, BC (Canada); Univ. of York (United Kingdom)
Univ. of Manitoba, Winnipeg, MB (Canada)
Justus-Liebig-Univ., GieBen (Germany)
TRIUMF, Vancouver, BC (Canada); Max-Planck-Institut für Kernphysik Heidelberg (Germany)
TRIUMF, Vancouver, BC (Canada); Univ. of Manitoba, Winnipeg, MB (Canada)
TRIUMF, Vancouver, BC (Canada); Northwestern Univ., Evanston, IL (United States)
Colorado School of Mines, Golden, CO (United States)
TRIUMF, Vancouver, BC (Canada); Ruprecht-Karls-Univ. Heidelberg (Germany)
Michigan State Univ., East Lansing, MI (United States)
JINA-CEE, East Lansing, MI (United States)
GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany); Technische Univ. Darmstadt (Germany); Univ. of Minnesota, Minneapolis, MN (United States)
TRIUMF, Vancouver, BC (Canada); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
Univ. of Calgary, AB (Canada)

Publication Date:: Mon Feb 10 00:00:00 EST 2020

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE; National Science Foundation (NSF); Canadian-UK Foundation; German Inst. DFG; German Federal Ministry of Education and Research (BMBF); Helmholtz Association through NAVI

OSTI Identifier:: 1603982

Report Number(s):: LA-UR-18-28439
Journal ID: ISSN 2469-9985; PRVCAN; TRN: US2104169

Grant/Contract Number:: AC52-06NA25396; 89233218CNA000001; PHY-1419765; PHY-1614130; SC0017649; ST/L005816/1; ST/L005743/1; FR 601/3-1; SFB 1245; 05P15RGFN1; 05P12RGFN8; VH-VI-417

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review C

Additional Journal Information:: Journal Volume: 101; Journal Issue: 2; Journal ID: ISSN 2469-9985

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Binding energy & masses; Nuclear astrophysics; Nucleosynthesis in explosive environments; r process; 59 ≤ A ≤ 89; Spectrometers & spectroscopic techniques

Citation Formats


                    Reiter, M. P., Ayet San Andrés, S., Nikas, S., Lippuner, J., Andreoiu, C., Babcock, C., Barquest, B. R., Bollig, J., Brunner, T., Dickel, T., Dilling, J., Dillmann, I., Dunling, E., Gwinner, G., Graham, L., Hornung, C., Klawitter, R., Kootte, B., Kwiatkowski, A. A., Lan, Y., Lascar, D., Leach, K. G., Leistenschneider, E., Martínez-Pinedo, G., McKay, J. E., Paul, S. F., Plaß, W. R., Roberts, L., Schatz, H., Scheidenberger, C., Sieverding, A., Steinbrügge, R., Thompson, R., Wieser, M. E., Will, C., and Welch, D. Mass measurements of neutron-rich gallium isotopes refine production of nuclei of the first r-process abundance peak in neutron-star merger calculations.  United States: N. p., 2020. 
Web.  doi:10.1103/PhysRevC.101.025803.

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                    Reiter, M. P., Ayet San Andrés, S., Nikas, S., Lippuner, J., Andreoiu, C., Babcock, C., Barquest, B. R., Bollig, J., Brunner, T., Dickel, T., Dilling, J., Dillmann, I., Dunling, E., Gwinner, G., Graham, L., Hornung, C., Klawitter, R., Kootte, B., Kwiatkowski, A. A., Lan, Y., Lascar, D., Leach, K. G., Leistenschneider, E., Martínez-Pinedo, G., McKay, J. E., Paul, S. F., Plaß, W. R., Roberts, L., Schatz, H., Scheidenberger, C., Sieverding, A., Steinbrügge, R., Thompson, R., Wieser, M. E., Will, C., & Welch, D. Mass measurements of neutron-rich gallium isotopes refine production of nuclei of the first r-process abundance peak in neutron-star merger calculations.  United States.  https://doi.org/10.1103/PhysRevC.101.025803

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                    Reiter, M. P., Ayet San Andrés, S., Nikas, S., Lippuner, J., Andreoiu, C., Babcock, C., Barquest, B. R., Bollig, J., Brunner, T., Dickel, T., Dilling, J., Dillmann, I., Dunling, E., Gwinner, G., Graham, L., Hornung, C., Klawitter, R., Kootte, B., Kwiatkowski, A. A., Lan, Y., Lascar, D., Leach, K. G., Leistenschneider, E., Martínez-Pinedo, G., McKay, J. E., Paul, S. F., Plaß, W. R., Roberts, L., Schatz, H., Scheidenberger, C., Sieverding, A., Steinbrügge, R., Thompson, R., Wieser, M. E., Will, C., and Welch, D. Mon .  
"Mass measurements of neutron-rich gallium isotopes refine production of nuclei of the first r-process abundance peak in neutron-star merger calculations".  United States.  https://doi.org/10.1103/PhysRevC.101.025803.  https://www.osti.gov/servlets/purl/1603982.

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@article{osti_1603982,

  title        = {Mass measurements of neutron-rich gallium isotopes refine production of nuclei of the first r-process abundance peak in neutron-star merger calculations},

  author       = {Reiter, M. P. and Ayet San Andrés, S. and Nikas, S. and Lippuner, J. and Andreoiu, C. and Babcock, C. and Barquest, B. R. and Bollig, J. and Brunner, T. and Dickel, T. and Dilling, J. and Dillmann, I. and Dunling, E. and Gwinner, G. and Graham, L. and Hornung, C. and Klawitter, R. and Kootte, B. and Kwiatkowski, A. A. and Lan, Y. and Lascar, D. and Leach, K. G. and Leistenschneider, E. and Martínez-Pinedo, G. and McKay, J. E. and Paul, S. F. and Plaß, W. R. and Roberts, L. and Schatz, H. and Scheidenberger, C. and Sieverding, A. and Steinbrügge, R. and Thompson, R. and Wieser, M. E. and Will, C. and Welch, D.},

  abstractNote = {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.},

  doi          = {10.1103/PhysRevC.101.025803},

  journal      = {Physical Review C},

  number       = 2,

  volume       = 101,

  place        = {United States},

  year         = {Mon Feb 10 00:00:00 EST 2020},

  month        = {Mon Feb 10 00:00:00 EST 2020}

}

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Pygmy Gamow-Teller resonance in the $N = 50$ region: New evidence from staggering of $β$ -delayed neutron-emission probabilities
journal, May 2017

Verney, D.; Testov, D.; Ibrahim, F.
Physical Review C, Vol. 95, Issue 5
DOI: 10.1103/PhysRevC.95.054320

The Light Curve of the Macronova Associated with the Long–Short Burst grb 060614
journal, September 2015

Jin, Zhi-Ping; Li, Xiang; Cano, Zach
The Astrophysical Journal, Vol. 811, Issue 2
DOI: 10.1088/2041-8205/811/2/L22

r-PROCESS LANTHANIDE PRODUCTION AND HEATING RATES IN KILONOVAE
journal, December 2015

Lippuner, Jonas; Roberts, Luke F.
The Astrophysical Journal, Vol. 815, Issue 2
DOI: 10.1088/0004-637X/815/2/82

The tidal disruption of neutron stars by black holes in close binaries
journal, November 1976

Lattimer, J. M.; Schramm, D. N.
The Astrophysical Journal, Vol. 210
DOI: 10.1086/154860

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

Verney, D.; Tastet, B.; Kolos, K.
Physical Review C, Vol. 87, Issue 5
DOI: 10.1103/PhysRevC.87.054307

New Half-lives of $r$ -process Zn and Ga Isotopes Measured with Electromagnetic Separation
journal, September 2012

Madurga, M.; Surman, R.; Borzov, I. N.
Physical Review Letters, Vol. 109, Issue 11
DOI: 10.1103/PhysRevLett.109.112501

Dynamical time focus shift in multiple-reflection time-of-flight mass spectrometers
journal, January 2017

Dickel, Timo; Yavor, Mikhail I.; Lang, Johannes
International Journal of Mass Spectrometry, Vol. 412
DOI: 10.1016/j.ijms.2016.11.005

Impact of individual nuclear masses on $r$ -process abundances
journal, September 2015

Mumpower, M. R.; Surman, R.; Fang, D. -L.
Physical Review C, Vol. 92, Issue 3
DOI: 10.1103/PhysRevC.92.035807

New calculations of gross $β$ -decay properties for astrophysical applications: Speeding-up the classical r process
journal, May 2003

Möller, Peter; Pfeiffer, Bernd; Kratz, Karl-Ludwig
Physical Review C, Vol. 67, Issue 5
DOI: 10.1103/PhysRevC.67.055802

Further explorations of Skyrme-Hartree-Fock-Bogoliubov mass formulas. XIII. The 2012 atomic mass evaluation and the symmetry coefficient
journal, August 2013

Goriely, S.; Chamel, N.; Pearson, J. M.
Physical Review C, Vol. 88, Issue 2
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Systematics of Dynamical mass Ejection, Nucleosynthesis, and Radioactively Powered Electromagnetic Signals from Neutron-Star Mergers
journal, July 2013

Bauswein, A.; Goriely, S.; Janka, H. -T.
The Astrophysical Journal, Vol. 773, Issue 1
DOI: 10.1088/0004-637X/773/1/78

Multi-messenger Observations of a Binary Neutron Star Merger
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Abbott, B. P.; Abbott, R.; Abbott, T. D.
The Astrophysical Journal, Vol. 848, Issue 2
DOI: 10.3847/2041-8213/aa91c9

Resonant Ionization Laser Ion Source (RILIS) off-line developments on Ga, Al and Ca
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Li, R.; Lassen, J.; Teigelhöfer, A.
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 308
DOI: 10.1016/j.nimb.2013.05.005

The r-process of stellar nucleosynthesis: Astrophysics and nuclear physics achievements and mysteries
journal, September 2007

Arnould, M.; Goriely, S.; Takahashi, K.
Physics Reports, Vol. 450, Issue 4-6
DOI: 10.1016/j.physrep.2007.06.002

High-performance multiple-reflection time-of-flight mass spectrometers for research with exotic nuclei and for analytical mass spectrometry
journal, November 2015

Plaß, Wolfgang R.; Dickel, Timo; Andres, Samuel Ayet San
Physica Scripta, Vol. T166
DOI: 10.1088/0031-8949/2015/T166/014069

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Raeder, Sebastian; Heggen, Henning; Lassen, Jens
Review of Scientific Instruments, Vol. 85, Issue 3
DOI: 10.1063/1.4868496

Black-hole-neutron-star collisions
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Lattimer, J. M.; Schramm, D. N.
The Astrophysical Journal, Vol. 192
DOI: 10.1086/181612

Identification of strontium in the merger of two neutron stars
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Watson, Darach; Hansen, Camilla J.; Selsing, Jonatan
Nature, Vol. 574, Issue 7779
DOI: 10.1038/s41586-019-1676-3

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journal, March 2015

Dickel, T.; Plaß, W. R.; Becker, A.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 777
DOI: 10.1016/j.nima.2014.12.094

$β$ -Decay Half-Lives of ${}^{76, 77}{Co}$ , ${}^{79, 80}{Ni}$ , and ${}^{81}{Cu}$ : Experimental Indication of a Doubly Magic ${}^{78}{Ni}$
journal, July 2014

Xu, Z. Y.; Nishimura, S.; Lorusso, G.
Physical Review Letters, Vol. 113, Issue 3
DOI: 10.1103/PhysRevLett.113.032505

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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

Abstract

Citation Formats

The first direct double neutron star merger detection: Implications for cosmic nucleosynthesis journal, July 2018

TITAN's digital RFQ ion beam cooler and buncher, operation and performance journal, June 2012

Large-scale evaluation of β -decay rates of r -process nuclei with the inclusion of first-forbidden transitions journal, February 2016

Fingerprints of Heavy-Element Nucleosynthesis in the Late-Time Lightcurves of Kilonovae journal, February 2019

Microscopic mass formulas journal, July 1995

Strong one-neutron emission from two-neutron unbound states in β decays of the r -process nuclei Ga 86 , 87 journal, September 2019

The impact of uncertain nuclear masses near closed shells on the r -process abundance pattern journal, February 2015

Dawning of the N = 32 Shell Closure Seen through Precision Mass Measurements of Neutron-Rich Titanium Isotopes journal, February 2018

Fission properties of superheavy nuclei for r -process calculations journal, March 2018

Neutrino-Driven Winds in the Aftermath of a Neutron star Merger: Nucleosynthesis and Electromagnetic Transients journal, October 2015

Nuclear mass formula with Bogolyubov-enhanced shell-quenching: application to r-process journal, October 1996

The fundamental role of fission during r-process nucleosynthesis in neutron star mergers journal, February 2015

Binding Energy of Cu 79 : Probing the Structure of the Doubly Magic Ni 78 from Only One Proton Away journal, November 2017

Sensitivity studies for the main r process: β-decay rates journal, April 2014

Physical Conditions for the r -process. I. Radioactive Energy Sources of Kilonovae journal, November 2018

THE r -PROCESS NUCLEOSYNTHESIS IN THE VARIOUS JET-LIKE EXPLOSIONS OF MAGNETOROTATIONAL CORE-COLLAPSE SUPERNOVAE journal, September 2015

Discovery of a pulsar in a binary system journal, January 1975

Composite uranium carbide targets at TRIUMF: Development and characterization with SEM, XRD, XRF and L-edge densitometry journal, September 2013

The AME2016 atomic mass evaluation (II). Tables, graphs and references journal, March 2017

The AME2016 atomic mass evaluation (I). Evaluation of input data; and adjustment procedures journal, March 2017

The NUBASE2016 evaluation of nuclear properties journal, March 2017

Electromagnetic Signatures of Neutron Star Mergers in the Advanced LIGO Era journal, October 2016

The Emergence of a Lanthanide-rich Kilonova Following the Merger of Two Neutron Stars journal, October 2017

The jina Reaclib Database: its Recent Updates and Impact on Type-I X-Ray Bursts journal, June 2010

Origin of the heavy elements in binary neutron-star mergers from a gravitational-wave event journal, October 2017

Reexamining Gamow-Teller decays near Ni 78 journal, April 2016

AN r -PROCESS KILONOVA ASSOCIATED WITH THE SHORT-HARD GRB 130603B journal, August 2013

Swift and NuSTAR observations of GW170817: Detection of a blue kilonova journal, October 2017

Sensitivity studies for the main r process: nuclear masses journal, April 2014

Quenching of the N = 32 neutron shell closure studied via precision mass measurements of neutron-rich vanadium isotopes journal, August 2018

The impact of individual nuclear properties on r -process nucleosynthesis journal, January 2016

Nuclear ground-state masses and deformations: FRDM(2012) journal, May 2016

Evolution of the N = 50 Shell Gap Energy towards Ni 78 journal, July 2008

Nucleosynthesis, neutrino bursts and γ-rays from coalescing neutron stars journal, July 1989

A luminous blue kilonova and an off-axis jet from a compact binary merger at z = 0.1341 journal, October 2018

Electromagnetic counterparts of compact object mergers powered by the radioactive decay of r-process nuclei: Transients from compact object mergers journal, June 2010

Nucleosynthesis in neutron-rich supernova ejecta journal, October 1985

[CLC][ITAL]r[/ITAL][/CLC]-Process in Neutron Star Mergers journal, November 1999

The MR-TOF-MS isobar separator for the TITAN facility at TRIUMF journal, May 2015

Gravitational Waves and Gamma-Rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A journal, October 2017

A kilonova as the electromagnetic counterpart to a gravitational-wave source journal, October 2017

Sensitivity of the r-process to nuclear masses journal, December 2012

GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral journal, October 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

Ion-optical design of a high-performance multiple-reflection time-of-flight mass spectrometer and isobar separator journal, May 2015

THE ROLE OF FISSION IN NEUTRON STAR MERGERS AND ITS IMPACT ON THE r -PROCESS PEAKS journal, July 2015

Time-of-flight mass spectrometers with multiply reflected ion trajectories journal, April 1990

β -delayed neutron emission from Ga 85 journal, May 2018

Uncertainties in s-process nucleosynthesis in low-mass stars determined from Monte Carlo variations journal, May 2018

Transient Events from Neutron Star Mergers journal, November 1998

Nuclear robustness of the r process in neutron-star mergers journal, November 2015

Commissioning and initial operation of a radioactive beam ion source at ISAC journal, February 2000

Grb 080503: Implications of a Naked Short Gamma-Ray Burst Dominated by Extended Emission journal, April 2009

Electromagnetic Transients Powered by Nuclear Decay in the Tidal Tails of Coalescing Compact Binaries journal, July 2011

SkyNet: A Modular Nuclear Reaction Network Library journal, December 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

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

Spectroscopic identification of r-process nucleosynthesis in a double neutron-star merger journal, October 2017

A possible macronova in the late afterglow of the long–short burst GRB 060614 journal, June 2015

A ‘kilonova’ associated with the short-duration γ-ray burst GRB 130603B journal, August 2013

Isotopic r-process abundances and nuclear structure far from stability - Implications for the r-process mechanism journal, January 1993

MAGNETOROTATIONALLY DRIVEN SUPERNOVAE AS THE ORIGIN OF EARLY GALAXY r -PROCESS ELEMENTS? journal, April 2012

Pygmy Gamow-Teller resonance in the N = 50 region: New evidence from staggering of β -delayed neutron-emission probabilities journal, May 2017

The Light Curve of the Macronova Associated with the Long–Short Burst grb 060614 journal, September 2015

r-PROCESS LANTHANIDE PRODUCTION AND HEATING RATES IN KILONOVAE journal, December 2015

The tidal disruption of neutron stars by black holes in close binaries journal, November 1976

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

New Half-lives of r -process Zn and Ga Isotopes Measured with Electromagnetic Separation journal, September 2012

Dynamical time focus shift in multiple-reflection time-of-flight mass spectrometers journal, January 2017

Impact of individual nuclear masses on r -process abundances journal, September 2015

New calculations of gross β -decay properties for astrophysical applications: Speeding-up the classical r process journal, May 2003

Further explorations of Skyrme-Hartree-Fock-Bogoliubov mass formulas. XIII. The 2012 atomic mass evaluation and the symmetry coefficient journal, August 2013

Systematics of Dynamical mass Ejection, Nucleosynthesis, and Radioactively Powered Electromagnetic Signals from Neutron-Star Mergers journal, July 2013

Multi-messenger Observations of a Binary Neutron Star Merger journal, October 2017

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

High-performance multiple-reflection time-of-flight mass spectrometers for research with exotic nuclei and for analytical mass spectrometry journal, November 2015

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

The first direct double neutron star merger detection: Implications for cosmic nucleosynthesis
journal, July 2018

TITAN's digital RFQ ion beam cooler and buncher, operation and performance
journal, June 2012

Large-scale evaluation of $β$ -decay rates of $r$ -process nuclei with the inclusion of first-forbidden transitions
journal, February 2016

Fingerprints of Heavy-Element Nucleosynthesis in the Late-Time Lightcurves of Kilonovae
journal, February 2019

Microscopic mass formulas
journal, July 1995

Strong one-neutron emission from two-neutron unbound states in $β$ decays of the $r$ -process nuclei ${}^{86, 87}{Ga}$
journal, September 2019

The impact of uncertain nuclear masses near closed shells on the r -process abundance pattern
journal, February 2015

Dawning of the $N = 32$ Shell Closure Seen through Precision Mass Measurements of Neutron-Rich Titanium Isotopes
journal, February 2018

Fission properties of superheavy nuclei for $r$ -process calculations
journal, March 2018

Neutrino-Driven Winds in the Aftermath of a Neutron star Merger: Nucleosynthesis and Electromagnetic Transients
journal, October 2015

Nuclear mass formula with Bogolyubov-enhanced shell-quenching: application to r-process
journal, October 1996

The fundamental role of fission during r-process nucleosynthesis in neutron star mergers
journal, February 2015

Binding Energy of ${}^{79}{Cu}$ : Probing the Structure of the Doubly Magic ${}^{78}{Ni}$ from Only One Proton Away
journal, November 2017

Sensitivity studies for the main r process: β-decay rates
journal, April 2014

Physical Conditions for the r -process. I. Radioactive Energy Sources of Kilonovae
journal, November 2018

THE r -PROCESS NUCLEOSYNTHESIS IN THE VARIOUS JET-LIKE EXPLOSIONS OF MAGNETOROTATIONAL CORE-COLLAPSE SUPERNOVAE
journal, September 2015

Discovery of a pulsar in a binary system
journal, January 1975

Composite uranium carbide targets at TRIUMF: Development and characterization with SEM, XRD, XRF and L-edge densitometry
journal, September 2013

The AME2016 atomic mass evaluation (II). Tables, graphs and references
journal, March 2017

The AME2016 atomic mass evaluation (I). Evaluation of input data; and adjustment procedures
journal, March 2017

The NUBASE2016 evaluation of nuclear properties
journal, March 2017

Electromagnetic Signatures of Neutron Star Mergers in the Advanced LIGO Era
journal, October 2016

The Emergence of a Lanthanide-rich Kilonova Following the Merger of Two Neutron Stars
journal, October 2017

The jina Reaclib Database: its Recent Updates and Impact on Type-I X-Ray Bursts
journal, June 2010

Origin of the heavy elements in binary neutron-star mergers from a gravitational-wave event
journal, October 2017

Reexamining Gamow-Teller decays near ${}^{78}{Ni}$
journal, April 2016

AN r -PROCESS KILONOVA ASSOCIATED WITH THE SHORT-HARD GRB 130603B
journal, August 2013

Swift and NuSTAR observations of GW170817: Detection of a blue kilonova
journal, October 2017

Sensitivity studies for the main r process: nuclear masses
journal, April 2014

Quenching of the $N = 32$ neutron shell closure studied via precision mass measurements of neutron-rich vanadium isotopes
journal, August 2018

The impact of individual nuclear properties on $r$ -process nucleosynthesis
journal, January 2016

Nuclear ground-state masses and deformations: FRDM(2012)
journal, May 2016

Evolution of the $N = 50$ Shell Gap Energy towards ${}^{78}{Ni}$
journal, July 2008

Nucleosynthesis, neutrino bursts and γ-rays from coalescing neutron stars
journal, July 1989

A luminous blue kilonova and an off-axis jet from a compact binary merger at z = 0.1341
journal, October 2018

Electromagnetic counterparts of compact object mergers powered by the radioactive decay of r-process nuclei: Transients from compact object mergers
journal, June 2010

Nucleosynthesis in neutron-rich supernova ejecta
journal, October 1985

[CLC][ITAL]r[/ITAL][/CLC]-Process in Neutron Star Mergers
journal, November 1999

The MR-TOF-MS isobar separator for the TITAN facility at TRIUMF
journal, May 2015

Gravitational Waves and Gamma-Rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
journal, October 2017

A kilonova as the electromagnetic counterpart to a gravitational-wave source
journal, October 2017

Sensitivity of the r-process to nuclear masses
journal, December 2012

GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
journal, October 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

Ion-optical design of a high-performance multiple-reflection time-of-flight mass spectrometer and isobar separator
journal, May 2015

THE ROLE OF FISSION IN NEUTRON STAR MERGERS AND ITS IMPACT ON THE r -PROCESS PEAKS
journal, July 2015

Time-of-flight mass spectrometers with multiply reflected ion trajectories
journal, April 1990

$β$ -delayed neutron emission from ${}^{85}{Ga}$
journal, May 2018

Uncertainties in s-process nucleosynthesis in low-mass stars determined from Monte Carlo variations
journal, May 2018

Transient Events from Neutron Star Mergers
journal, November 1998

Nuclear robustness of the $r$ process in neutron-star mergers
journal, November 2015

Commissioning and initial operation of a radioactive beam ion source at ISAC
journal, February 2000

Grb 080503: Implications of a Naked Short Gamma-Ray Burst Dominated by Extended Emission
journal, April 2009

Electromagnetic Transients Powered by Nuclear Decay in the Tidal Tails of Coalescing Compact Binaries
journal, July 2011

SkyNet: A Modular Nuclear Reaction Network Library
journal, December 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

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

Spectroscopic identification of r-process nucleosynthesis in a double neutron-star merger
journal, October 2017

A possible macronova in the late afterglow of the long–short burst GRB 060614
journal, June 2015

A ‘kilonova’ associated with the short-duration γ-ray burst GRB 130603B
journal, August 2013

Isotopic r-process abundances and nuclear structure far from stability - Implications for the r-process mechanism
journal, January 1993

MAGNETOROTATIONALLY DRIVEN SUPERNOVAE AS THE ORIGIN OF EARLY GALAXY r -PROCESS ELEMENTS?
journal, April 2012

Pygmy Gamow-Teller resonance in the $N = 50$ region: New evidence from staggering of $β$ -delayed neutron-emission probabilities
journal, May 2017

The Light Curve of the Macronova Associated with the Long–Short Burst grb 060614
journal, September 2015

r-PROCESS LANTHANIDE PRODUCTION AND HEATING RATES IN KILONOVAE
journal, December 2015

The tidal disruption of neutron stars by black holes in close binaries
journal, November 1976

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

New Half-lives of $r$ -process Zn and Ga Isotopes Measured with Electromagnetic Separation
journal, September 2012

Dynamical time focus shift in multiple-reflection time-of-flight mass spectrometers
journal, January 2017

Impact of individual nuclear masses on $r$ -process abundances
journal, September 2015

New calculations of gross $β$ -decay properties for astrophysical applications: Speeding-up the classical r process
journal, May 2003

Further explorations of Skyrme-Hartree-Fock-Bogoliubov mass formulas. XIII. The 2012 atomic mass evaluation and the symmetry coefficient
journal, August 2013

Systematics of Dynamical mass Ejection, Nucleosynthesis, and Radioactively Powered Electromagnetic Signals from Neutron-Star Mergers
journal, July 2013

Multi-messenger Observations of a Binary Neutron Star Merger
journal, October 2017

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

High-performance multiple-reflection time-of-flight mass spectrometers for research with exotic nuclei and for analytical mass spectrometry
journal, November 2015

An ion guide laser ion source for isobar-suppressed rare isotope beams
journal, March 2014

Black-hole-neutron-star collisions
journal, September 1974