New measurements of low-energy resonances in the Ne22(p,γ)Na23 reaction

Kelly, K. J.; Champagne, A. E.; Downen, L. N.; Dermigny, J. R.; Hunt, S.; Iliadis, C.; Cooper, A. L.

doi:10.1103/PhysRevC.95.015806

Title: New measurements of low-energy resonances in the ${}^{22}{Ne} (p, γ) {}^{23}{Na}$ reaction

Abstract

The ${}_{22}{Ne} (p, γ) {}_{23}{Na}$ reaction is one of the most uncertain reactions in the NeNa cycle and plays a crucial role in the creation of ${}_{23}{Na}$ , the only stable Na isotope. Uncertainties in the low-energy rates of this and other reactions in the NeNa cycle lead to ambiguities in the nucleosynthesis predicted from models of thermally pulsing asymptotic giant branch (AGB) stars. This in turn complicates the interpretation of anomalous Na-O trends in globular cluster evolutionary scenarios. Prior studies of the ${}_{22}{Ne} (p, γ) {}_{23}{Na}$ , ${}_{22}{Ne} ({}_{3}{He}, d) {}_{23}{Na}$ , and ${}_{12}C ({}_{12}C, p) {}_{23}{Na}$ reactions disagree on the strengths, spins, and parities of low-energy resonances in ${}_{23}{Na}$ and the direct-capture ${}_{22}{Ne} (p, γ) {}_{23}{Na}$ reaction rate contains large uncertainties as well. Here, we present new measurements of resonances at $E_{r}^{c.m.} = 417$ , 178, and 151 keV and of the direct-capture process in the ${}_{22}{Ne} (p, γ) {}_{23}{Na}$ reaction. The resulting total ${}_{22}{Ne} (p, γ) {}_{23}{Na}$ rate is approximately a factor of 20 higher than the rate listed in a recent compilation at temperatures relevant to hot-bottom burning in AGB stars. Although our rate is close to that derived from a recent ${}_{22}{Ne} (p, γ) {}_{23}{Na}$ measurement by Cavanna et al. in 2015, we find that this large rate increase results in only a modest 18% increase in the ${}_{23}{Na}$ abundance predicted from a 5 $M_{⊙}$ thermally pulsing AGB star model from Ventura and D'Antona (2005). The estimated astrophysical impact of this rate increase is in marked contrast to the factor of $~ 3$ increase in ${}_{23}{Na}$ abundance predicted by Cavanna et al. and is attributed to the interplay between the ${}_{23}{Na} (p, α) {}_{20}{Ne}$ and ${}_{20}{Ne} (p, γ) {}_{21}{Na}$ reactions, both of which remain fairly uncertain at the relevant temperature range.

Authors:

Kelly, K. J. ^[1]; Champagne, A. E. ^[2]; Downen, L. N. ^[2]; Dermigny, J. R. ^[2]; Hunt, S. ^[2]; Iliadis, C. ^[2]; Cooper, A. L. ^[2]

Univ. of North Carolina, Chapel Hill, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States); Duke Univ., Durham, NC (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Univ. of North Carolina, Chapel Hill, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States); Duke Univ., Durham, NC (United States)

Publication Date:: Thu Jan 19 00:00:00 EST 2017

Research Org.:: University of North Carolina, Chapel Hill, NC (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1600490

Alternate Identifier(s):: OSTI ID: 1341296

Grant/Contract Number:: FG02-97ER41041

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review C

Additional Journal Information:: Journal Volume: 95; Journal Issue: 1; Journal ID: ISSN 2469-9985

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 96 KNOWLEDGE MANAGEMENT AND PRESERVATION; experimental nuclear astrophysics

Citation Formats


                    Kelly, K. J., Champagne, A. E., Downen, L. N., Dermigny, J. R., Hunt, S., Iliadis, C., and Cooper, A. L. New measurements of low-energy resonances in the Ne22(p,γ)Na23 reaction.  United States: N. p., 2017. 
Web.  doi:10.1103/PhysRevC.95.015806.

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                    Kelly, K. J., Champagne, A. E., Downen, L. N., Dermigny, J. R., Hunt, S., Iliadis, C., & Cooper, A. L. New measurements of low-energy resonances in the Ne22(p,γ)Na23 reaction.  United States.  https://doi.org/10.1103/PhysRevC.95.015806

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                    Kelly, K. J., Champagne, A. E., Downen, L. N., Dermigny, J. R., Hunt, S., Iliadis, C., and Cooper, A. L. Thu .  
"New measurements of low-energy resonances in the Ne22(p,γ)Na23 reaction".  United States.  https://doi.org/10.1103/PhysRevC.95.015806.  https://www.osti.gov/servlets/purl/1600490.

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@article{osti_1600490,

  title        = {New measurements of low-energy resonances in the Ne22(p,γ)Na23 reaction},

  author       = {Kelly, K. J. and Champagne, A. E. and Downen, L. N. and Dermigny, J. R. and Hunt, S. and Iliadis, C. and Cooper, A. L.},

  abstractNote = {The Ne22(p,γ)Na23 reaction is one of the most uncertain reactions in the NeNa cycle and plays a crucial role in the creation of Na23, the only stable Na isotope. Uncertainties in the low-energy rates of this and other reactions in the NeNa cycle lead to ambiguities in the nucleosynthesis predicted from models of thermally pulsing asymptotic giant branch (AGB) stars. This in turn complicates the interpretation of anomalous Na-O trends in globular cluster evolutionary scenarios. Prior studies of the Ne22(p,γ)Na23, Ne22(He3,d)Na23, and C12(C12,p)Na23 reactions disagree on the strengths, spins, and parities of low-energy resonances in Na23 and the direct-capture Ne22(p,γ)Na23 reaction rate contains large uncertainties as well. Here, we present new measurements of resonances at Erc.m.=417, 178, and 151 keV and of the direct-capture process in the Ne22(p,γ)Na23 reaction. The resulting total Ne22(p,γ)Na23 rate is approximately a factor of 20 higher than the rate listed in a recent compilation at temperatures relevant to hot-bottom burning in AGB stars. Although our rate is close to that derived from a recent Ne22(p,γ)Na23 measurement by Cavanna et al. in 2015, we find that this large rate increase results in only a modest 18% increase in the Na23 abundance predicted from a 5 M⊙ thermally pulsing AGB star model from Ventura and D'Antona (2005). The estimated astrophysical impact of this rate increase is in marked contrast to the factor of ~3 increase in Na23 abundance predicted by Cavanna et al. and is attributed to the interplay between the Na23(p,α)Ne20 and Ne20(p,γ)Na21 reactions, both of which remain fairly uncertain at the relevant temperature range.},

  doi          = {10.1103/PhysRevC.95.015806},

  journal      = {Physical Review C},

  number       = 1,

  volume       = 95,

  place        = {United States},

  year         = {Thu Jan 19 00:00:00 EST 2017},

  month        = {Thu Jan 19 00:00:00 EST 2017}

}

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Works referencing / citing this record:

A high-efficiency gas target setup for underground experiments, and redetermination of the branching ratio of the 189.5 keV 22Ne(p, $\gamma$ γ )23Na resonance
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Ratio of germanium detector peak efficiencies at photon energies of 4.4 and 11.7MeV: Experiment versus simulation journal, June 2010

The energy levels of 23Na journal, April 1973

Light nuclei in galactic globular clusters: constraints on the self-enrichment scenario from nucleosynthesis journal, May 2007

Full computation of massive AGB evolution: I. The large impact of convection on nucleosynthesis journal, February 2005

ROOT — An object oriented data analysis framework journal, April 1997

Thermonuclear reaction rate of 18 O( p , γ ) 19 F journal, December 2012

Nuclear astrophysics studies at the LENA facility: The -ray detection system journal, October 2006

Correlated cyanogen and sodium anomalies in the globular clusters 47 TUC and NGC 6752 journal, April 1981

Three New Low-Energy Resonances in the Ne 22 ( p , γ ) Na 23 Reaction journal, December 2015

Predictions for Self-Pollution in Globular Cluster Stars journal, March 2001

Comments on the origin of the carbon and nitrogen variations within NGC 6752 and 47 Tucanae journal, March 1982

High-intensity-beam study of O 17 ( p , γ ) F 18 and thermonuclear reaction rates for O 17 + p journal, January 2015

Minuit - a system for function minimization and analysis of the parameter errors and correlations journal, December 1975

Recommendations for Monte Carlo nucleosynthesis sampling journal, November 2012

Energy levels of A = 21–44 nuclei (VII) journal, December 1990

The kinetics of formation and structure of anodic oxide films on tantalum journal, May 1953

Srim-2003 journal, June 2004

Massive binaries as the source of abundance anomalies in globular clusters journal, October 2009

Origin of multiple stellar populations in globular clusters and their helium enrichment journal, November 2008

A new study of the 22Ne(p, γ)23Na reaction deep underground: Feasibility, setup and first observation of the 186 keV resonance journal, November 2014

Investigation of the 22Ne(p,γ)23Na reaction via (3He,d) spectroscopy journal, December 2001

Hydrogen burning of 20Ne and 22Ne in stars journal, April 1975

A Java-based data acquisition system for nuclear physics journal, May 2001

Proton-induced direct capture on 21Ne and 22Ne journal, October 1983

Abundance Variations within Globular Clusters journal, September 2004

Theory of Angular Correlation of Nuclear Radiations journal, July 1953

Starlib: a Next-Generation Reaction-Rate Library for Nuclear Astrophysics journal, July 2013

Direct measurement of low-energy Ne 22 ( p , γ ) Na 23 resonances journal, November 2016

Nuclear Structure of Na 23 : The Ne 22 ( He 3 , d ) Reaction journal, December 1971

Asymptotic Giant Branch Stars book, January 2004

Starlib: a Next-Generation Reaction-Rate Library for Nuclear Astrophysics text, January 2013

γ-Ray spectroscopy using a binned likelihood approach journal, September 2016

Strengths of the resonances at 436, 479, 639, 661, and 1279 keV in the Ne 22 ( p , γ ) Na 23 reaction journal, October 2015

γ -ray spectroscopy of the A = 23 , T = 1 / 2 nuclei 23 Na and 23 Mg: High-spin states, mirror symmetry, and applications to nuclear astrophysical reaction rates journal, June 2013

A model for globular cluster extreme anomalies journal, August 2007

The 22Ne(d, n) 23Na reaction journal, March 1973

Absolute resonance strengths in the Ne 2 0 , 2 1 , 2 2 ( p , γ ) Na 2 1 , 2 2 , 2 3 and Ne 21 ( p , p 1 γ ) Ne 21 reactions journal, February 1977

Fast rotating massive stars and the origin of the abundance patterns in galactic globular clusters journal, January 2007

Nuclear Data Sheets for A = 23 journal, January 2007

Resonance strength in Ne 22 ( p , γ ) Na 23 from depth profiling in aluminum journal, May 2010

New recommended ω γ for the E r c . m . = 458 keV resonance in Ne 22 ( p , γ ) Na 23 journal, September 2015

Geant4—a simulation toolkit journal, July 2003

Light nuclei in galactic globular clusters: constraints on the self-enrichment scenario from nucleosynthesis text, January 2007

Nuclear Physics of Stars book, January 2007

Charged-particle thermonuclear reaction rates: II. Tables and graphs of reaction rates and probability density functions journal, October 2010

Statistical methods for thermonuclear reaction rates and nucleosynthesis simulations journal, February 2015

Charged-particle thermonuclear reaction rates: I. Monte Carlo method and statistical distributions journal, October 2010

Does the oxygen-sodium anticorrelation in globular clusters require a lowering of the $\mathsf{^{23}}$Na(p,$\mathsf{\alpha)^{20}}$Ne reaction rate? journal, September 2006

Fitting using finite Monte Carlo samples journal, October 1993

Monte Carlo simulation of the LENA detector system journal, November 2013

Fluctuations of Nuclear Cross Sections in the "Continuum" Region journal, November 1960

Asymptotic Giant Branch Stars book, January 2000

Nuclear Mixing Meters for Classical Novae text, January 2013

Charged-particle thermonuclear reaction rates: I. Monte Carlo method and statistical distributions text, January 2010

Charged-particle thermonuclear reaction rates: II. Tables and graphs of reaction rates and probability density functions text, January 2010

Light nuclei in galactic globular clusters : constraints on the self-enrichment scenario from nucleosynthesis text, January 2007

A model for the Globular Cluster extreme anomalies text, January 2007

Origin of multiple stellar populations in globular clusters and their helium enrichment text, January 2008

Massive binaries as the source of abundance anomalies in globular clusters text, January 2009

Thermonuclear reaction rate of 18O(p,gamma)19F text, January 2012

Full computation of massive AGB evolution. I. The large impact of convection on nucleosynthesis text, January 2004

On the self-enrichment scenario of galactic globular clusters: Constraints on the IMF text, January 2006

Fast rotating massive stars and the origin of the abundance patterns in galactic globular clusters text, January 2006

A Triple Main Sequence in the Globular Cluster NGC 2808 text, January 2007

A high-efficiency gas target setup for underground experiments, and redetermination of the branching ratio of the 189.5 keV 22Ne(p, $\gamma$ γ )23Na resonance journal, March 2018

Direct Capture Cross Section and the E p = 71 and 105 keV Resonances in the Ne 22 ( p , γ ) Na 23 Reaction journal, October 2018

Title: New measurements of low-energy resonances in the ${}^{22}{Ne} (p, γ) {}^{23}{Na}$ reaction

Measurement of the $E_{r}^{c.m.} = 138$ keV resonance in the $^{23}$ Na( $p$ , $γ$ ) $^{24}$ Mg reaction and the abundance of sodium in AGB stars
journal, December 2013

A Triple Main Sequence in the Globular Cluster NGC 2808
journal, April 2007

Resonance strengths, branching ratios and mean lifetimes of nuclear energy levels in23Na
journal, April 1971

Variations in the Na-O anticorrelation in globular clusters: evidence for a deep mixing episode in red giant branch stars: Variations in the Na-O anticorrelation
journal, April 2010

Globular Cluster Systems
book, January 2009

Nuclear astrophysics studies at LENA: The accelerators
journal, November 2010

Nuclear Mixing Meters for Classical Novae
journal, October 2013

On the self-enrichment scenario of galactic globular clusters: constraints on the IMF
journal, October 2006

Nuclear Physics of Stars
book, January 2015

Ratio of germanium detector peak efficiencies at photon energies of 4.4 and 11.7MeV: Experiment versus simulation
journal, June 2010

The energy levels of 23Na
journal, April 1973

Light nuclei in galactic globular clusters: constraints on the self-enrichment scenario from nucleosynthesis
journal, May 2007

Full computation of massive AGB evolution: I. The large impact of convection on nucleosynthesis
journal, February 2005

ROOT — An object oriented data analysis framework
journal, April 1997

Thermonuclear reaction rate of $^{18}$ O( $p$ , $γ$ ) $^{19}$ F
journal, December 2012

Nuclear astrophysics studies at the LENA facility: The -ray detection system
journal, October 2006

Correlated cyanogen and sodium anomalies in the globular clusters 47 TUC and NGC 6752
journal, April 1981

Three New Low-Energy Resonances in the ${}^{22}{Ne} (p, γ) {}^{23}{Na}$ Reaction
journal, December 2015

Predictions for Self-Pollution in Globular Cluster Stars
journal, March 2001

Comments on the origin of the carbon and nitrogen variations within NGC 6752 and 47 Tucanae
journal, March 1982

High-intensity-beam study of ${}^{17}O (p, γ) {}^{18}F$ and thermonuclear reaction rates for ${}^{17}O + p$
journal, January 2015

Minuit - a system for function minimization and analysis of the parameter errors and correlations
journal, December 1975

Recommendations for Monte Carlo nucleosynthesis sampling
journal, November 2012

Energy levels of A = 21–44 nuclei (VII)
journal, December 1990

The kinetics of formation and structure of anodic oxide films on tantalum
journal, May 1953

Srim-2003
journal, June 2004

Massive binaries as the source of abundance anomalies in globular clusters
journal, October 2009

Origin of multiple stellar populations in globular clusters and their helium enrichment
journal, November 2008

A new study of the 22Ne(p, γ)23Na reaction deep underground: Feasibility, setup and first observation of the 186 keV resonance
journal, November 2014

Investigation of the 22Ne(p,γ)23Na reaction via (3He,d) spectroscopy
journal, December 2001

Hydrogen burning of 20Ne and 22Ne in stars
journal, April 1975

A Java-based data acquisition system for nuclear physics
journal, May 2001

Proton-induced direct capture on 21Ne and 22Ne
journal, October 1983

Abundance Variations within Globular Clusters
journal, September 2004

Theory of Angular Correlation of Nuclear Radiations
journal, July 1953

Starlib: a Next-Generation Reaction-Rate Library for Nuclear Astrophysics
journal, July 2013

Direct measurement of low-energy ${}^{22}{Ne} (p, γ) {}^{23}{Na}$ resonances
journal, November 2016

Nuclear Structure of ${}^{23}{Na}$ : The ${}^{22}{Ne} ({}^{3}{He}, d)$ Reaction
journal, December 1971

Asymptotic Giant Branch Stars
book, January 2004

Starlib: a Next-Generation Reaction-Rate Library for Nuclear Astrophysics
text, January 2013

γ-Ray spectroscopy using a binned likelihood approach
journal, September 2016

Strengths of the resonances at 436, 479, 639, 661, and 1279 keV in the ${}^{22}{Ne} (p, γ) {}^{23}{Na}$ reaction
journal, October 2015

$γ$ -ray spectroscopy of the $A = 23$ , $T = 1 / 2$ nuclei $^{23}$ Na and $^{23}$ Mg: High-spin states, mirror symmetry, and applications to nuclear astrophysical reaction rates
journal, June 2013

A model for globular cluster extreme anomalies
journal, August 2007

The 22Ne(d, n) 23Na reaction
journal, March 1973

Absolute resonance strengths in the ${}^{20, 21, 22}{Ne} (p, γ) {}^{21, 22, 23}{Na}$ and ${}^{21}{Ne} (p, p_{1} γ) {}^{21}{Ne}$ reactions
journal, February 1977

Fast rotating massive stars and the origin of the abundance patterns in galactic globular clusters
journal, January 2007

Nuclear Data Sheets for A = 23
journal, January 2007

Resonance strength in ${}^{22}{Ne}$ ( $p, γ$ ) ${}^{23}{Na}$ from depth profiling in aluminum
journal, May 2010

New recommended $ω γ$ for the $E_{r}^{c . m .} = 458$ keV resonance in ${}^{22}{Ne} (p, γ) {}^{23}{Na}$
journal, September 2015

Geant4—a simulation toolkit
journal, July 2003

Light nuclei in galactic globular clusters: constraints on the self-enrichment scenario from nucleosynthesis
text, January 2007

Nuclear Physics of Stars
book, January 2007

Charged-particle thermonuclear reaction rates: II. Tables and graphs of reaction rates and probability density functions
journal, October 2010

Statistical methods for thermonuclear reaction rates and nucleosynthesis simulations
journal, February 2015

Charged-particle thermonuclear reaction rates: I. Monte Carlo method and statistical distributions
journal, October 2010

Does the oxygen-sodium anticorrelation in globular clusters require a lowering of the $\mathsf{^{23}}$Na(p,$\mathsf{\alpha)^{20}}$Ne reaction rate?
journal, September 2006

Fitting using finite Monte Carlo samples
journal, October 1993

Monte Carlo simulation of the LENA detector system
journal, November 2013

Fluctuations of Nuclear Cross Sections in the "Continuum" Region
journal, November 1960

Asymptotic Giant Branch Stars
book, January 2000

Nuclear Mixing Meters for Classical Novae
text, January 2013

Charged-particle thermonuclear reaction rates: I. Monte Carlo method and statistical distributions
text, January 2010

Charged-particle thermonuclear reaction rates: II. Tables and graphs of reaction rates and probability density functions
text, January 2010

Light nuclei in galactic globular clusters : constraints on the self-enrichment scenario from nucleosynthesis
text, January 2007

A model for the Globular Cluster extreme anomalies
text, January 2007

Origin of multiple stellar populations in globular clusters and their helium enrichment
text, January 2008

Massive binaries as the source of abundance anomalies in globular clusters
text, January 2009

Thermonuclear reaction rate of 18O(p,gamma)19F
text, January 2012

Full computation of massive AGB evolution. I. The large impact of convection on nucleosynthesis
text, January 2004

On the self-enrichment scenario of galactic globular clusters: Constraints on the IMF
text, January 2006

Fast rotating massive stars and the origin of the abundance patterns in galactic globular clusters
text, January 2006

A Triple Main Sequence in the Globular Cluster NGC 2808
text, January 2007

A high-efficiency gas target setup for underground experiments, and redetermination of the branching ratio of the 189.5 keV 22Ne(p, $\gamma$ γ )23Na resonance
journal, March 2018

Direct Capture Cross Section and the $E_{p} = 71$ and 105 keV Resonances in the ${}^{22}{Ne} (p, γ) {}^{23}{Na}$ Reaction
journal, October 2018