Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Influence of {sup 73}Rb on the Ashes of Accreting Neutron Stars

Journal Article · · Physical Review C, Nuclear Physics
; ; ; ; ; ; ; ; ;
We find that the proton separation energy, S(p), of Rb-73 is -640(40) keV, deduced from the observation of beta-delayed ground-state protons following the decay of Sr-73. This lower-limit determination of the proton separation energy of Rb-73 coupled with previous upper limits from nonobservation, provides a full constraint on the mass excess with Delta M(Rb-73) = -46.01 +/- 0.04 MeV. With this new mass excess and the excitation energy of the J(pi) = 5/2(-) isobaric-analog state (T = 3/2) in Rb-73, an improved constraint can be put on the mass excess of Sr-73 using the isobaric-multiplet mass equation (IMME), and we find Delta M(Sr-73) = -31.98 +/- 0.37 MeV. These new data were then used to study the composition of ashes on accreting neutron stars following Type I xray bursts. Counterintuitively, we find that there should be an enhanced fraction of A > 102 nuclei with more negative proton separation energies at the Kr-72 rp-process waiting point. Larger impurities of heavier nuclei in the ashes of accreting neutron stars will impact the cooling models for such astrophysical scenarios.
Research Organization:
Argonne National Laboratory (ANL)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science - Office of Nuclear Physics; National Science Foundation (NSF)
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1774901
Journal Information:
Physical Review C, Nuclear Physics, Journal Name: Physical Review C, Nuclear Physics Journal Issue: 4 Vol. 102; ISSN 0556-2813
Country of Publication:
United States
Language:
English

References (53)

Crust of accreting neutron stars within simplified reaction network journal October 2019
Isobaric quartets in nuclei journal July 1979
Rotational bands in73Br: The disappearance of shape coexistence in72Se journal March 1985
The AME2016 atomic mass evaluation (II). Tables, graphs and references journal March 2017
Electrical and thermal conductivities of dense matter in the crystalline lattice phase. II - Impurity scattering journal February 1993
Nuclear Reactions in the Crusts of Accreting Neutron Stars journal May 2018
Split Isobaric Analog State in Ni 55 : Case of Strong Isospin Mixing journal December 2013
Precise Mass Measurement of Se 68 , a Waiting-Point Nuclide along the rp Process journal May 2004
Ground-State Proton Decay of Br 69 and Implications for the Se 68 Astrophysical Rapid Proton-Capture Process Waiting Point journal June 2011
Reaction rates and reaction sequences in the rp-process journal September 1994
emcee : The MCMC Hammer
  • Foreman-Mackey, Daniel; Hogg, David W.; Lang, Dustin
  • Publications of the Astronomical Society of the Pacific, Vol. 125, Issue 925 https://doi.org/10.1086/670067
journal March 2013
Isospin mixing from β -delayed proton emission journal May 2017
Proton drip-line calculations and the rp process journal March 2002
The Effects of Variations in Nuclear Processes on Type I X‐Ray Burst Nucleosynthesis journal September 2008
New Finite-Range Droplet Mass Model and Equation-of-State Parameters journal January 2012
β -delayed proton emission of 69 Kr and the 68 Se rp-process waiting point journal November 2014
Rules for Spin and Parity Assignments Based on Log ft Values journal May 1973
Heating in the Accreted Neutron Star Ocean: Implications for Superburst Ignition journal June 2007
Precise measurement of the Ge 64 mass and its effect on the rp process journal March 2007
β -particle energy-summing correction for β -delayed proton emission measurements
  • Meisel, Z.; del Santo, M.; Crawford, H. L.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 844 https://doi.org/10.1016/j.nima.2016.11.019
journal February 2017
Models for Type I X‐Ray Bursts with Improved Nuclear Physics journal March 2004
Bayes in the sky: Bayesian inference and model selection in cosmology journal March 2008
Modules for Experiments in Stellar Astrophysics (Mesa): Binaries, Pulsations, and Explosions journal September 2015
Using Thermodynamic Integration to Calculate the Posterior Probability in Bayesian Model Selection Problems
  • Goggans, Paul M.
  • BAYESIAN INFERENCE AND MAXIMUM ENTROPY METHODS IN SCIENCE AND ENGINEERING: 23rd International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering, AIP Conference Proceedings https://doi.org/10.1063/1.1751356
conference January 2004
Conversion electron and yrast state measurements in Br 73 journal April 1990
Proton instability of 73Rb journal March 1996
Direct Mass Measurements of Short-Lived A = 2 Z − 1 Nuclides Ge 63 , As 65 , Se 67 , and Kr 71 and Their Impact on Nucleosynthesis in the r p Process journal March 2011
Influence of Nuclear Reaction Rate Uncertainties on Neutron Star Properties Extracted from X-Ray Burst Model–Observation Comparisons journal February 2019
Radio Frequency Fragment Separator at NSCL
  • Bazin, D.; Andreev, V.; Becerril, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 606, Issue 3 https://doi.org/10.1016/j.nima.2009.05.100
journal July 2009
Exposing the Nuclear Burning Ashes of Radius Expansion Type I X‐Ray Bursts journal March 2006
Consistent Modeling of GS 1826-24 X-Ray Bursts for Multiple Accretion Rates Demonstrates the Possibility of Constraining rp -process Reaction Rates journal June 2018
Mass measurements in the vicinity of the doubly magic waiting point Ni 56 journal September 2010
Mapping Crustal Heating with the Cooling Light Curves of Quasi-Persistent Transients journal May 2009
SHELL MODEL BASED REACTION RATES FOR rp-PROCESS NUCLEI IN THE MASS RANGE A=44–63 journal November 2001
Explosive hydrogen burning journal January 1981
Quadrupole Deformation of the Self-Conjugate Nucleus Kr 72 journal July 2005
Forecasting Neutron Star Temperatures: Predictability and Variability journal December 2013
Thermonuclear Burst Observations for Model Comparisons: A Reference Sample journal January 2017
Discovery of Rb 72 : A Nuclear Sandbank Beyond the Proton Drip Line journal November 2017
Fragmentation of Kr 78 projectiles journal April 1996
Commissioning the A1900 projectile fragment separator journal May 2003
Evaluated experimental isobaric analogue states from T=1/2 to T=3 and associated IMME coefficients journal May 2014
Mirror-symmetry violation in bound nuclear ground states journal April 2020
Shape coexistence revealed in the $$N=Z$$ isotope $$^{72}$$Kr through inelastic scattering journal June 2020
Nuclear physics of the outer layers of accreting neutron stars journal July 2018
rp-process nucleosynthesis at extreme temperature and density conditions journal February 1998
High-Precision Mass Measurement of Cu 56 and the Redirection of the r p -Process Flow journal January 2018
The isobaric multiplet mass equation for revisited journal November 2013
Cooling of Accretion-Heated Neutron Stars journal September 2017
Mass Measurement on the r p -Process Waiting Point K r 72 journal October 2004
Isobaric multiplet mass equation within nuclear density functional theory journal January 2019
Dependence of X-Ray Burst Models on Nuclear Masses journal August 2017
End Point of the rp Process on Accreting Neutron Stars journal April 2001

Similar Records

Influence of 73Rb on the ashes of accreting neutron stars
Journal Article · Mon Oct 19 20:00:00 EDT 2020 · Physical Review C · OSTI ID:1823255
The beta-delayed proton decay of {sup 73}Sr
Journal Article · Fri Oct 01 00:00:00 EDT 1993 · Bulletin of the American Physical Society · OSTI ID:387263
Beta-delayed proton decay of [sup 73]Sr
Journal Article · Tue Nov 30 23:00:00 EST 1993 · Physical Review, C (Nuclear Physics); (United States) · OSTI ID:5800953

Related Subjects