Richard Leigh Longland

The 2025 Evaluation of Experimental Thermonuclear Reaction Rates (ETR25)

Iliadis, C., Longland, R., Setoodehnia, K., Marshall, C., Mohr, P., & Psaltis, A. (2026, February 19). The Astrophysical Journal Supplement Series.

Bayesian analysis of the Sr86(α,α) reaction to constrain the Sr86(α,n) cross section at astrophysical energies

Marshall, C., Lansing, T., Gribble, D., Longland, R., Psaltis, A., & Setoodehnia, K. (2025, October 1). Physical Review. C.

Data for the 2025 Evaluation of Experimental Reaction Rates (ETR25)

iliadis, christian, Longland, R., Setoodehnia, K., Marshall, C., Mohr, P., & Psaltis, A. (2025, November 14). Zenodo (CERN European Organization for Nuclear Research).

Data for the 2025 Evaluation of Experimental Reaction Rates (ETR25)

iliadis, christian, Longland, R., Setoodehnia, K., Marshall, C., Mohr, P., & Psaltis, A. (2025, November 14). Zenodo (CERN European Organization for Nuclear Research).

Erratum: “Low-metallicity Nova Explosions: A Site for Weak rp-process Nucleosynthesis” (2025, ApJ, 987, 88)

Psaltis, A., José, J., Longland, R., & Iliadis, C. (2025, August 29). The Astrophysical Journal.

Indirect measurement of the Na 23 ( p , γ ) Mg 24 direct capture reaction rate via ( He 3 ,   d ) spectroscopy

Song, K., Longland, R., Marshall, C., Setoodehnia, K., Chaves, F. P., & Fraud, A. (2025, October 8). Physical Review. C, Vol. 12.

Inverse kinematics study of the energy levels of Ne21 populated with the Ne20+d reaction

Angus, C., Laird, A. M., Tang, T. L., Adsley, P., Avila, M. L., Chakraborty, S., … Wilson, G. L. (2025, July 7). Physical Review. C, Vol. 112.

Investigation of P31 levels near the proton threshold with nuclear resonance fluorescence and the impact on the Si30(p,γ)P31 thermonuclear rate

Gribble, D., Iliadis, C., Janssens, R. V. F., Friman-Gayer, U., Ayangeakaa, A. D., Champagne, A., … Wegner, C. (2025, June 2). Physical Review. C, Vol. 112.

Low-metallicity Nova Explosions: A Site for Weak rp-process Nucleosynthesis

Psaltis, A., José, J., Longland, R., & Iliadis, C. (2025, July 1). The Astrophysical Journal, Vol. 987.

Ne21 energy levels approaching the α-particle threshold

Angus, C., Frost-Schenk, J., Laird, A. M., Adsley, P., Longland, R., Barton, C. J., … Setoodehnia, K. (2024, April 22). Physical Review. C, Vol. 109.

High Resolution Study of Ca40 to Constrain Potassium Nucleosynthesis in NGC 2419

Fox, W., Longland, R., Marshall, C., & Chaves, F. P. (2024, February 8). Physical Review Letters, Vol. 132.

Measurements at the Facility for Experiments of Nuclear Reactions in Stars (FENRIS) (Final Technical Report)

Longland, R. (2024, March 25).

Thermonuclear ²⁸P(p, γ)²⁹S reaction rate and astrophysical implication in ONe nova explosion

Liu, J. B., José, J., Hou, S. Q., Pignatari, M., Trueman, T. C. L., Longland, R., … Xu, X. X. (2024, May 23). Astronomy and Astrophysics.

Correlated characterization of 20Ne-implanted targets using nuclear reaction analysis, Rutherford backscattering spectrometry, and ion transport modeling

Cooper, A. L., Hunt, S., Downen, L., Setoodehnia, K., Portillo, F., Marshall, C., … Longland, R. (2023, September 3). Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, Vol. 1056.

New constraints on sodium production in globular clusters from theNa23(He3,d)Mg24reaction

Marshall, C., Setoodehnia, K., Cinquegrana, G. C., Kelly, J. H., Chaves, F. P., Karakas, A., & Longland, R. (2023, March 22). Physical Review. C, Vol. 107.

Spin-parities of subthreshold resonances in the F18(p,α)O15 reaction

Portillo, F., Longland, R., Cooper, A. L., Hunt, S., Laird, A. M., Marshall, C., & Setoodehnia, K. (2023, March 31). Physical Review. C, Vol. 107.

Understanding globular cluster abundances through nuclear reactions

Adsley, P., Williams, M., Harrouz, D. S., Carrasco-Rojas, D. P., Seréville, N., Hammache, F., … Wirth, H.-F. (2023, September 1). Journal of Physics Conference Series, Vol. 2586.

Direct Measurement of Resonances in Be7(α,γ)C11 Relevant to νp-Process Nucleosynthesis

Psaltis, A., Chen, A. A., Longland, R., Connolly, D. S., Brune, C. R., Davids, B., … Collaboration, N. G. (2022, October 14). Physical Review Letters, p. [""].

Experimental study of the Si30(He3,d)P31 reaction and thermonuclear reaction rate of Si30(p,γ)P31

Harrouz, D. S., Séréville, N., Adsley, P., Hammache, F., Longland, R., Bastin, B., … Wirth, H.-F. (2022, January 14). Physical Review. C, Vol. 1.

First inverse kinematics measurement of resonances in Be7(α,γ)C11 relevant to neutrino-driven wind nucleosynthesis using DRAGON

Psaltis, A., Chen, A. A., Longland, R., Connolly, D. S., Brune, C. R., Davids, B., … Williams, M. (2022, October 14). Physical Review. C, Vol. 10.

The impact of 17O + α reaction rate uncertainties on the s-process in rotating massive stars

Frost-Schenk, J., Adsley, P., Laird, A. M., Longland, R., Angus, C., Barton, C., … Setoodehnia, K. (2022, May 19). Monthly Notices of the Royal Astronomical Society, Vol. 6.

New energy for the 133-keV resonance in the Na23(p,γ)Mg24 reaction and its impact on nucleosynthesis in globular clusters

Marshall, C., Setoodehnia, K., Portillo, F., Kelley, J. H., & Longland, R. (2021, September 1). Physical Review. C, Vol. 9.

Bayesian analysis of the Zn70(d,He3)Cu69 transfer reaction

Marshall, C., Morfouace, P., Séréville, N., & Longland, R. (2020, August 10). Physical Review. C, Vol. 102.

Correlated energy uncertainties in reaction rate calculations

Longland, R., & Séréville, N. (2020, July 16). Astronomy and Astrophysics, Vol. 642.

Evaluation of the N13(α,p)O16 thermonuclear reaction rate and its impact on the isotopic composition of supernova grains

Meyer, A., Séréville, N., Laird, A. M., Hammache, F., Longland, R., Lawson, T., … Tatischeff, V. (2020, September 9). Physical Review. C, Vol. 102.

Shell-model studies of the astrophysical rp-process reactions S34(p,γ)Cl35 and Cl34g,m(p,γ)Ar35

Richter, W. A., Brown, B. A., Longland, R., Wrede, C., Denissenkov, P., Fry, C., … Reifarth, R. (2020, August 4). Physical Review. C, Vol. 102.

Shell-model studies of the astrophysical rp-process reactions ³⁴S(p,γ)³⁵Cl and ^{34 _g,m} Cl(p,γ)³⁵Ar

Richter, W. A., Brown, B. A., Longland, R., Wrede, C., Fry, C., Denisenkov, P., … Reifarth, R. (2020, December 1). Journal of Physics Conference Series.

Study of the Mg-25(d,p)Mg-26 reaction to constrain the Al-25(p,gamma)Si-26 resonant reaction rates in nova burning conditions

Edinburgh Research Explorer (University of Edinburgh), Vol. 56.

Thermonuclear reaction rate ofSi30(p,γ)P31

Dermigny, J., Iliadis, C., Champagne, A., & Longland, R. (2020, July 14). Physical Review. C, Vol. 102.

Experimental study of Cl35 excited states via S32(α,p)

Setoodehnia, K., Kelley, J. H., Marshall, C., Chaves, F. P., & Longland, R. (2019, May 30). Physical Review. C, Vol. 99.

Effectiveness of using a magnetic spectrograph with the Trojan Horse method

Manwell, S., Parikh, A., Chen, A. A., Séréville, N., Adsley, P., Irvine, D., … Crom, B. L. (2018, January 1). Journal of Physics Conference Series, Vol. 940, p. 012046.

Excited states of Ca39 and their significance in nova nucleosynthesis

Setoodehnia, K., Marshall, C., Kelley, J. H., Liang, J., Chaves, F. P., & Longland, R. (2018, November 26). Physical Review. C, Vol. 98.

On the parallelization of stellar evolution codes

Martin, D., José, J., & Longland, R. (2018, November 16). Computational Astrophysics and Cosmology, Vol. 5.

Reaction rates for the K39(p,γ)Ca40 reaction

Longland, R., Dermigny, J., & Marshall, C. (2018, August 23). Physical Review. C, Vol. 98.

The Focal-Plane Detector Package on the TUNL Split-Pole Spectrograph

Marshall, C., Setoodehnia, K., Kowal, K., Portillo, F., Champagne, A. E., Hale, S., … Longland, R. (2018, July 23). IEEE Transactions on Instrumentation and Measurement, Vol. 68, pp. 533–546.

Correlated uncertainties in Monte Carlo reaction rate calculations

Longland, R. (2017, May 23). Astronomy and Astrophysics, Vol. 604, p. A34.

Correlated uncertainties in Monte Carlo reaction rate calculations

Astronomy & Astrophysics, 604.

Measurement of very low (α,n) cross sections of astrophysical interest

Tain, J. L., Jordán, D., Agramunt, J., Algora, A., Bandac, I., Bettini, A., … Parikh, A. (2016, January 5). Journal of Physics Conference Series, Vol. 665, p. 012031.

The²⁰Ne(d,p)²¹Ne transfer reaction in relation to thes-process abundances

Nsangu, C. T., Laird, A. M., Parikh, A., Adsley, P., Birch, M. D., Chen, A. A., … Wirth, H.-F. (2016, January 5). Journal of Physics Conference Series, Vol. 665, p. 012026.

Characterization of a 10B-doped liquid scintillator as a capture-gated neutron spectrometer

Hunt, S., Iliadis, C., & Longland, R. (2015, December 18). Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, Vol. 811, pp. 108–114.

High-intensity-beam study ofO17(p,γ)F18and thermonuclear reaction rates forO17+p

Buckner, M. Q., Iliadis, C., Kelly, K. J., Downen, L. N., Champagne, A. E., Cesaratto, J. M., … Longland, R. (2015, January 30). Physical Review C, Vol. 91.

New reaction rates for improved primordialD/Hcalculation and the cosmic evolution of deuterium

Coc, A., Petitjean, P., Uzan, J.-P., Vangioni, E., Descouvemont, P., Iliadis, C., & Longland, R. (2015, December 22). Physical Review. D. Particles, Fields, Gravitation, and Cosmology/Physical Review. D, Particles, Fields, Gravitation, and Cosmology, Vol. 92.

New recommendedωγfor theErc.m.=458keV resonance inNe22(p,γ)Na23

Kelly, K. J., Champagne, A. E., Longland, R., & Buckner, M. Q. (2015, September 4). Physical Review C, Vol. 92.

Statistical methods for thermonuclear reaction rates and nucleosynthesis simulations

Iliadis, C., Longland, R., Coc, A., Timmes, F. X., & Champagne, A. E. (2015, February 5). Journal of Physics G Nuclear and Particle Physics, Vol. 42, p. 034007.

Statistical methods for thermonuclear reaction rates and nucleosynthesis simulations

Journal of Physics. G, Nuclear and Particle Physics, 42(3).

Nuclear astrophysics in the laboratory and in the universe

Champagne, A. E., Iliadis, C., & Longland, R. (2014, February 24). AIP Advances, Vol. 4, p. 041006.

Performance improvements for nuclear reaction network integration

Longland, R., Martin, D., José, J., Longland, R., Martin, D., & José, J. (2014, January 23). Astronomy and Astrophysics, Vol. 563, p. A67.

Thermonuclear reaction rate ofNe18(α,p)Na21from Monte Carlo calculations

Mohr, P., Longland, R., & Iliadis, C. (2014, December 19). Physical Review C, Vol. 90.

Evidence for the existence of the astrophysically important 6.40-MeV state of31S

Irvine, D., Chen, A. A., Parikh, A., Setoodehnia, K., Faestermann, T., Hertenberger, R., … Wrede, C. (2013, November 27). Physical Review C, Vol. 88.

Isγ-Ray Emission from Novae Affected by Interference Effects in theF18(p,α)O15Reaction?

Laird, A. M., Parikh, A., Murphy, A. S. J., Wimmer, K., Chen, A. A., Deibel, C. M., … Wirth, H.-F. (2013, January 15). Physical Review Letters, Vol. 110.

Mean proton andα-particle reduced widths of the Porter-Thomas distribution and astrophysical applications

Pogrebnyak, I., Howard, C., Iliadis, C., Longland, R., & Mitchell, G. E. (2013, July 31). Physical Review C, Vol. 88.

Measurement of theErc.m.=138keV resonance in the23Na(p,γ)24Mg reaction and the abundance of sodium in AGB stars

Cesaratto, J. M., Champagne, A. E., Buckner, M. Q., Clegg, T. B., Daigle, S., Howard, C., … Oginni, B. M. (2013, December 18). Physical Review C, Vol. 88.

Nuclear structure of30S and its implications for nucleosynthesis in classical novae

Setoodehnia, K., Chen, A. A., Kahl, D., Komatsubara, T., José, J., Longland, R., … Yuasa, T. (2013, June 7). Physical Review C, Vol. 87.

CONSTRAINTS ON THE MASS AND RADIUS OF THE ACCRETING NEUTRON STAR IN THE RAPID BURSTER

The Astrophysical Journal, 752(2), 158.

Current Status of the²²Ne+αs-Process Neutron Source

Longland, R., & Iliadis, C. (2012, February 8). Journal of Physics Conference Series, Vol. 337, p. 012047.

Lithium production in the merging of white dwarf stars

Longland, R., Lorén-Aguilar, P., José, J., García-Berro, E., & Althaus, L. G. (2012, May 15). Astronomy and Astrophysics, Vol. 542, p. A117.

Publisher's Note: Reaction rates for thes-process neutron source22Ne +α[Phys. Rev. C85, 065809 (2012)]

Longland, R., Iliadis, C., & Karakas, A. I. (2012, July 10). Physical Review C, Vol. 86.

Reaction rates for thes-process neutron source22Ne+α

Longland, R., Iliadis, C., & Karakas, A. I. (2012, June 25). Physical Review C, Vol. 85.

Recommendations for Monte Carlo nucleosynthesis sampling

Longland, R., & Longland, R. (2012, October 18). Astronomy and Astrophysics, Vol. 548, p. A30.

Improving theP30(p,γ)S31rate in oxygen-neon novae: Constraints onJπvalues for proton-threshold states inS31

Parikh, A., Wimmer, K., Faestermann, T., Hertenberger, R., José, J., Longland, R., … Wrede, C. (2011, April 27). Physical Review C, Vol. 83.

NUCLEOSYNTHESIS DURING THE MERGER OF WHITE DWARFS AND THE ORIGIN OF R CORONAE BOREALIS STARS

Longland, R., Lorén-Aguilar, P., José, J., García-Berro, E., Althaus, L. G., Isern, J., … Isern, J. (2011, August 2). The Astrophysical Journal Letters, Vol. 737, p. L34.

Charged-particle thermonuclear reaction rates: I. Monte Carlo method and statistical distributions

Longland, R., Iliadis, C., Champagne, A. E., Newton, J. R., Ugalde, C., Coc, A., & Fitzgerald, R. (2010, April 29). Nuclear Physics A, Vol. 841, pp. 1–30.

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

Iliadis, C., Longland, R., Champagne, A. E., Coc, A., & Fitzgerald, R. (2010, April 29). Nuclear Physics A, Vol. 841, pp. 31–250.

Charged-particle thermonuclear reaction rates: III. Nuclear physics input

Iliadis, C., Longland, R., Champagne, A. E., & Coc, A. (2010, May 1). Nuclear Physics A, Vol. 841, pp. 251–322.

Charged-particle thermonuclear reaction rates: IV. Comparison to previous work

Iliadis, C., Longland, R., Champagne, A. E., & Coc, A. (2010, May 1). Nuclear Physics A, Vol. 841, pp. 323–388.

Measurement ofO17(p,γ)F18between the narrow resonances atErlab=193and519 keV

Newton, J. R., Iliadis, C., Champagne, A. E., Cesaratto, J. M., Daigle, S., & Longland, R. (2010, April 2). Physical Review C, Vol. 81.

Monte-Carlo Reaction Rate Evaluation for Astrophysics

AIP conference proceedings. Presented at the TOURS SYMPOSIUM ON NUCLEAR PHYSICS AND ASTROPHYSICS—VII.

Photoexcitation of astrophysically important states inMg26. II. Ground-state-transition partial widths

deBoer, R. J., Wiescher, M., Görres, J., Longland, R., Iliadis, C., Rusev, G., & Tonchev, A. P. (2010, August 9). Physical Review C, Vol. 82.

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

Carson, S., Iliadis, C., Cesaratto, J., Champagne, A., Downen, L., Ivanovic, M., … Tonchev, A. P. (2010, February 27). Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, Vol. 618, pp. 190–198.

Resonance strength inNe22(p,γ)Na23from depth profiling in aluminum

Longland, R., Iliadis, C., Cesaratto, J. M., Champagne, A. E., Daigle, S., Newton, J. R., & Fitzgerald, R. (2010, May 21). Physical Review C, Vol. 81.

Photoexcitation of astrophysically important states inMg26

Longland, R., Iliadis, C., Rusev, G., Tonchev, A. P., deBoer, R. J., Görres, J., & Wiescher, M. (2009, November 16). Physical Review C, Vol. 80.

Thermal equilibration ofLu176viaKmixing

Gintautas, V., Champagne, A. E., Kondev, F. G., & Longland, R. (2009, July 16). Physical Review C, Vol. 80.

Matching of experimental and statistical-model thermonuclear reaction rates at high temperatures

Newton, J. R., Longland, R., & Iliadis, C. (2008, August 19). Physical Review C, Vol. 78.

Experimental evidence for a natural parity state inMg26and its impact on the production of neutrons for thesprocess

Ugalde, C., Champagne, A. E., Daigle, S., Iliadis, C., Longland, R., Newton, J. R., … Wrede, C. (2007, August 9). Physical Review C, Vol. 76.

Remeasurement of the 193 keV resonance inO17(p,α)N14

Newton, J. R., Iliadis, C., Champagne, A. E., Longland, R., & Ugalde, C. (2007, May 15). Physical Review C, Vol. 75.

Nuclear astrophysics studies at the LENA facility: The γ-ray detection system

Longland, R., Iliadis, C., Champagne, A. E., Fox, C., & Newton, J. R. (2006, August 2). Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, Vol. 566, pp. 452–464.

Thermonuclear reaction rate ofO17(p,γ)F18

Fox, C., Iliadis, C., Champagne, A. E., Fitzgerald, R. P., Longland, R., Newton, J., … Runkle, R. (2005, May 5). Physical Review C, Vol. 71.