R. J. Charity

Washington University in St. Louis — United States

Physics and Astronomy · Physical Sciences

53h-index9.6kcitations383works1.62yr avg
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Research Topics

Nuclear physics research studies(308), Nuclear Physics and Applications(112), Atomic and Molecular Physics(109), Astronomical and nuclear sciences(98), Quantum Chromodynamics and Particle Interactions(52)

Publications383 total

Deviations from the Isobaric Multiplet Mass Equation due to threshold states
ArXiv.org·2025Open Access
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mmultiscripts> <mml:mi>He</mml:mi> <mml:mprescripts/> <mml:none/> <mml:mrow> <mml:mn>3</mml:mn> </mml:mrow> </mml:mmultiscripts> <mml:mo>+</mml:mo> <mml:mi>α</mml:mi> </mml:mrow> </mml:math> resonances in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mmultiscripts> <mml:mi>Be</mml:mi> <mml:mprescripts/> <mml:none/> <mml:mrow> <mml:mn>7</mml:mn> </mml:mrow> </mml:mmultiscripts> </mml:mrow> </mml:math>
Physical review. C·2025
Picosecond lifetime measurements of resonances using a thick-target invariant-mass technique
Physical review. C·2025
Observation of three-proton-decaying resonant states in 21Al
Physics Letters B·2025· 1 citedOpen Access
In-beam <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>γ</mml:mi></mml:math>-ray spectroscopy toward the proton dripline: The curious case of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Ar</mml:mi><mml:mprescripts/><mml:none/><mml:mn>32</mml:mn></mml:mmultiscripts></mml:math>
Physical review. C·2025Open Access
Using intermediate energy knockout, pickup, and charge exchange reactions with invariant mass spectroscopy for investigating nuclear structure beyond the proton drip line
Frontiers in Physics·2025· 1 citedOpen Access
Neutron magicity in the proton drip-line nucleus <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Mg</mml:mi><mml:mprescripts/><mml:none/><mml:mn>20</mml:mn></mml:mmultiscripts></mml:math>: First invariant-mass reconstruction of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Mg</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>19</mml:mn><mml:mo>,</mml:mo><mml:mn>20</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>
Physical review. C·2024· 5 cited
Evolution of shell gaps in the neutron-poor calcium region from invariant-mass spectroscopy of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Sc</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>37</mml:mn><mml:mo>,</mml:mo><mml:mn>38</mml:mn></mml:mrow></mml:mmultiscripts><mml:mo>,</mml:mo><mml:mo> </mml:mo><mml:mmultiscripts><mml:mi>Ca</mml:mi><mml:mprescripts/><mml:none/><mml:mn>35</mml:mn></mml:mmultiscripts></mml:math>, and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">K</mml:mi><mml:mprescripts/><mml:none/><mml:mn>34</mml:mn></mml:mmultiscripts></mml:math>
Physical review. C·2024· 7 citedOpen Access
In-beam <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>γ</mml:mi></mml:math>-ray spectroscopy of negative-parity states of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">K</mml:mi><mml:mprescripts/><mml:none/><mml:mn>37</mml:mn></mml:mmultiscripts></mml:math> populated in dissipative reactions
Physical review. C·2024· 2 citedOpen Access
Nitrogen-9: A Ground-State Five-Proton Emitter
Nuclear Physics News·2024
Probing proton cross-shell excitations through the two-neutron removal from <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Ca</mml:mi><mml:mprescripts/><mml:none/><mml:mn>38</mml:mn></mml:mmultiscripts></mml:math>
Physical review. C·2023· 7 citedOpen Access
Invariant-mass spectroscopy in projectile fragmentation reactions
Physical review. C·2023· 13 citedOpen Access
Strong Evidence for <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">N</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>9</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math> and the Limits of Existence of Atomic Nuclei
Physical Review Letters·2023· 24 citedOpen Access
Strong evidence for 9N and the limits of existence of atomic nuclei
arXiv (Cornell University)·2023Open Access
Invariant-mass spectroscopy of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">B</mml:mi><mml:mprescripts/><mml:none/><mml:mn>10</mml:mn></mml:mmultiscripts><mml:mo>,</mml:mo><mml:mo> </mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">C</mml:mi><mml:mprescripts/><mml:none/><mml:mn>11</mml:mn></mml:mmultiscripts><mml:mo>,</mml:mo><mml:mo> </mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">F</mml:mi><mml:mprescripts/><mml:none/><mml:mn>14</mml:mn></mml:mmultiscripts><mml:mo>,</mml:mo><mml:mo> </mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">F</mml:mi><mml:mprescripts/><mml:none/><mml:mn>16</mml:mn></mml:mmultiscripts></mml:math>, and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Na</mml:mi><mml:mprescripts/><mml:none/><mml:mn>18</mml:mn></mml:mmultiscripts></mml:math>
Physical review. C·2023· 6 citedOpen Access
Invariant-mass spectroscopy in projectile fragmentation reactions
arXiv (Cornell University)·2023Open Access
Measurement of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>B</mml:mi><mml:mo>(</mml:mo><mml:mi>E</mml:mi><mml:mn>2</mml:mn><mml:mo>↑</mml:mo><mml:mo>)</mml:mo></mml:mrow></mml:math> strengths of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Ca</mml:mi><mml:mprescripts/><mml:none/><mml:mn>36</mml:mn></mml:mmultiscripts></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Ca</mml:mi><mml:mprescripts/><mml:none/><mml:mn>38</mml:mn></mml:mmultiscripts></mml:math>
Physical review. C·2023· 16 citedOpen Access
Observation of excited states in the near-drip-line nucleus 125Pr
UNC Libraries·2023· 1 citedOpen Access
Level structure of Rh92: Implications for the two-proton decay of Ag94m
UNC Libraries·2023· 2 citedOpen Access
Origin and consequences of C12+C12 fusion resonances at deep sub-barrier energies
UNC Libraries·2023· 2 citedOpen Access
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Frequent Co-authors

L. G. Sobotka(30), M. B. Tsang(19), W. G. Lynch(19), R. T. de Souza(10), G. J. Kunde(9), G. Verde(8), D. R. Bowman(8), U. Lynen(7), A. Moroni(7), J. Pochodzalla(7), H. Sann(7), W. Trautmann(7), J. M. Elson(7), D. G. Sarantites(6), W. C. Hsi(6), I. Iori(6), G. F. Peaslee(6), R. Shane(6), K. D. Hildenbrand(5), Wanpeng Tan(5)