R. Longland

North Carolina State University — United States

Physics and Astronomy · Physical Sciences

22h-index1.8kcitations116works0.62yr avg
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Research Topics

Nuclear physics research studies(80), Astronomical and nuclear sciences(38), Nuclear Physics and Applications(32), Atomic and Molecular Physics(24), Quantum Chromodynamics and Particle Interactions(14)

Publications115 total

Indirect measurement of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mmultiscripts> <mml:mi mathvariant="normal">Na</mml:mi> <mml:mprescripts/> <mml:none/> <mml:mn>23</mml:mn> </mml:mmultiscripts> <mml:mo>(</mml:mo> <mml:mi>p</mml:mi> <mml:mo>,</mml:mo> <mml:mi>γ</mml:mi> <mml:mo>)</mml:mo> <mml:mmultiscripts> <mml:mi mathvariant="normal">Mg</mml:mi> <mml:mprescripts/> <mml:none/> <mml:mn>24</mml:mn> </mml:mmultiscripts> </mml:mrow> </mml:math> direct capture reaction rate via ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mi mathvariant="normal">He</mml:mi> <mml:mprescripts/> <mml:none/> <mml:mn>3</mml:mn> </mml:mmultiscripts> <mml:mo>,</mml:mo> <mml:mo> </mml:mo> <mml:mi>d</mml:mi> </mml:math> ) spectroscopy
Physical review. C·2025
Bayesian analysis of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi>Sr</mml:mi><mml:mprescripts/><mml:none/><mml:mn>86</mml:mn></mml:mmultiscripts><mml:mo>(</mml:mo><mml:mi>α</mml:mi><mml:mo>,</mml:mo><mml:mi>α</mml:mi><mml:mo>)</mml:mo></mml:mrow></mml:math> reaction to constrain the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi>Sr</mml:mi><mml:mprescripts/><mml:none/><mml:mn>86</mml:mn></mml:mmultiscripts><mml:mo>(</mml:mo><mml:mi>α</mml:mi><mml:mo>,</mml:mo><mml:mi>n</mml:mi><mml:mo>)</mml:mo></mml:mrow></mml:math> cross section at astrophysical energies
Physical review. C·2025Open Access
Erratum: “Low-metallicity Nova Explosions: A Site for Weak rp-process Nucleosynthesis” (2025, ApJ, 987, 88)
UNC Libraries·2025Open Access
Low-metallicity Nova Explosions: A Site for Weak rp-process Nucleosynthesis
UNC Libraries·2025Open Access
Erratum: “Low-metallicity Nova Explosions: A Site for Weak <i>rp</i>-process Nucleosynthesis” (2025, ApJ, 987, 88)
The Astrophysical Journal·2025Open Access
Low-metallicity Nova Explosions: A Site for Weak <i>rp</i>-process Nucleosynthesis
The Astrophysical Journal·2025· 1 citedOpen Access
Low-metallicity nova explosions: a site for weak rp-process nucleosynthesis
arXiv (Cornell University)·2025Open Access
Investigation of $^{31}$P levels near the proton threshold by Nuclear Resonance Fluorescence and the impact on the $^{30}$Si(p,$γ$)$^{31}$P thermonuclear rate
arXiv (Cornell University)·2025Open Access
Investigation of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi mathvariant="normal">P</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>31</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math> levels near the proton threshold with nuclear resonance fluorescence and the impact on the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi>Si</mml:mi><mml:mprescripts/><mml:none/><mml:mn>30</mml:mn></mml:mmultiscripts><mml:mo>(</mml:mo><mml:mi>p</mml:mi><mml:mo>,</mml:mo><mml:mi>γ</mml:mi><mml:mo>)</mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">P</mml:mi><mml:mprescripts/><mml:none/><mml:mn>31</mml:mn></mml:mmultiscripts></mml:mrow></mml:math> thermonuclear rate
Physical review. C·2025· 1 cited
Thermonuclear <sup>28</sup>P(p, <i>γ</i>)<sup>29</sup>S reaction rate and astrophysical implication in ONe nova explosion
Astronomy and Astrophysics·2024· 1 citedOpen Access
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Ne</mml:mi><mml:mprescripts/><mml:none/><mml:mn>21</mml:mn></mml:mmultiscripts></mml:math> energy levels approaching the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>α</mml:mi></mml:math>-particle threshold
Physical review. C·2024· 2 citedOpen Access
Measurements at the Facility for Experiments of Nuclear Reactions in Stars (FENRIS) (Final Technical Report)
2024Open Access
High Resolution Study of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Ca</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>40</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math> to Constrain Potassium Nucleosynthesis in NGC 2419
Physical Review Letters·2024· 3 citedOpen Access
High Resolution Study of $^{40}$Ca to Constrain Potassium Nucleosynthesis in NGC 2419
arXiv (Cornell University)·2024Open Access
Correlated characterization of 20Ne-implanted targets using nuclear reaction analysis, Rutherford backscattering spectrometry, and ion transport modeling
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment·2023· 2 citedOpen Access
Understanding globular cluster abundances through nuclear reactions
Journal of Physics Conference Series·2023Open Access
Spin-parities of subthreshold resonances in the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi mathvariant="normal">F</mml:mi><mml:mprescripts/><mml:none/><mml:mn>18</mml:mn></mml:mmultiscripts><mml:mo>(</mml:mo><mml:mi>p</mml:mi><mml:mo>,</mml:mo><mml:mi>α</mml:mi><mml:mo>)</mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">O</mml:mi><mml:mprescripts/><mml:none/><mml:mn>15</mml:mn></mml:mmultiscripts></mml:mrow></mml:math> reaction
Physical review. C·2023· 4 citedOpen Access
Reaction rates for the s-process neutron source 22Ne + α
UNC Libraries·2023Open Access
Current status of the 22Ne+α s-process neutron source
UNC Libraries·2023Open Access
New constraints on sodium production in globular clusters from the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi>Na</mml:mi><mml:mprescripts/><mml:none/><mml:mn>23</mml:mn></mml:mmultiscripts><mml:mo>(</mml:mo><mml:mmultiscripts><mml:mi>He</mml:mi><mml:mprescripts/><mml:none/><mml:mn>3</mml:mn></mml:mmultiscripts><mml:mo>,</mml:mo><mml:mi mathvariant="normal">d</mml:mi><mml:mo>)</mml:mo><mml:mmultiscripts><mml:mi>Mg</mml:mi><mml:mprescripts/><mml:none/><mml:mn>24</mml:mn></mml:mmultiscripts></mml:mrow></mml:math>reaction
Physical review. C·2023· 6 citedOpen Access
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Frequent Co-authors

C. Iliadis(18), A. E. Champagne(14), Caleb Marshall(8), A. Coc(7), C. Iliadis(7), K. Setoodehnia(7), J. José(6), Joseph Newton(6), A. Parikh(6), John Cesaratto(5), C. M. Deibel(5), C. Wrede(5), Stephen Daigle(4), T. Faestermann(4), R. Hertenberger(4), A. A. Chen(4), D. Seiler(4), Arthur E. Champagne(4), A.E. Champagne(3), Ryan Fitzgerald(3)