Richard Longland

Angus, C., Frost-Schenk, J., Laird, A. M., Adsley, P., Longland, R., Barton, C. J., … Setoodehnia, K. (2024). [Review of <SUP>21 </SUP>Ne energy levels approaching the α-particle threshold]. PHYSICAL REVIEW C, 109(4). https://doi.org/10.1103/PhysRevC.109.044323

Longland, R. (2024). Measurements at the Facility for Experiments of Nuclear Reactions in Stars (FENRIS) (Final Technical Report). https://doi.org/10.2172/2322513

Fox, W., Longland, R., Marshall, C., & Chaves, F. P. (2024). Resolution of 40Ca to Constrain Potassium in NGC 2419. PHYSICAL REVIEW LETTERS, 132(6). https://doi.org/10.1103/PhysRevLett.132.062701

Cooper, A. L., Hunt, S., Downen, L., Setoodehnia, K., Portillo, F., Marshall, C., … Longland, R. (2023). Correlated characterization of 20Ne-implanted targets using nuclear reaction analysis, Rutherford backscattering spectrometry, and ion transport modeling. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1056. https://doi.org/10.1016/j.nima.2023.168654

Marshall, C., Setoodehnia, K., Cinquegrana, G. C., Kellly, J. H., Chaves, F. P., Karakas, A., & Longland, R. (2023). New constraints on sodium production in globular clusters from the 23Na(3He, d) 24Mg reaction. PHYSICAL REVIEW C, 107(3). https://doi.org/10.1103/PhysRevC.107.035806

Portillo, F., Longland, R., Cooper, A. L., Hunt, S., Laird, A. M., Marshall, C., & Setoodehnia, K. (2023). Spin-parities of subthreshold resonances in the 18F(p, ?)15O reaction. PHYSICAL REVIEW C, 107(3). https://doi.org/10.1103/PhysRevC.107.035809

Adsley, P., Williams, M., Harrouz, D. S., Carrasco-Rojas, D. P., Sereville, N., Hammache, F., … Wirth, H.-F. (2023). Understanding globular cluster abundances through nuclear reactions. 28TH INTERNATIONAL NUCLEAR PHYSICS CONFERENCE, INPC 2022, Vol. 2586. https://doi.org/10.1088/1742-6596/2586/1/012100

Psaltis, A., Chen, A. A., Longland, R., Connolly, D. S., Brune, C. R., Davids, B., … Collaboration, N. G. (2022). Direct Measurement of Resonances in 7Be(alpha,gamma )11C Relevant to vp-Process Nucleosynthesis. PHYSICAL REVIEW LETTERS, 129(16). https://doi.org/10.1103/PhysRevLett.129.162701

Harrouz, D. S., Sereville, N., Adsley, P., Hammache, F., Longland, R., Bastin, B., … Wirth, H.-F. (2022). Experimental study of the Si-30(He-3, d) P-31 reaction and thermonuclear reaction rate of Si-30(p, gamma)( 3)1P. PHYSICAL REVIEW C, 105(1). https://doi.org/10.1103/PhysRevC.105.015805

Psaltis, A., Chen, A. A., Longland, R., Connolly, D. S., Brune, C. R., Davids, B., … Williams, M. (2022). First inverse kinematics measurement of resonances in 7Be(alpha, gamma)11C relevant to neutrino-driven wind nucleosynthesis using DRAGON. PHYSICAL REVIEW C, 106(4). https://doi.org/10.1103/PhysRevC.106.045805

Frost-Schenk, J., Adsley, P., Laird, A. M., Longland, R., Angus, C., Barton, C., … Setoodehnia, K. (2022). The impact of O-17 + alpha reaction rate uncertainties on the s-process in rotating massive stars. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 514(2), 2650–2657. https://doi.org/10.1093/mnras/stac1373

Marshall, C., Setoodehnia, K., Portillo, F., Kelley, J. H., & Longland, R. (2021). New energy for the 133-keV resonance in the Na-23(p, gamma) Mg-24 reaction and its impact on nucleosynthesis in globular clusters. PHYSICAL REVIEW C, 104(3). https://doi.org/10.1103/PhysRevC.104.L032801

Marshall, C., Morfouace, P., Sereville, N., & Longland, R. (2020). Bayesian analysis of the Zn-70(d, He-3) Cu-69 transfer reaction. PHYSICAL REVIEW C, 102(2). https://doi.org/10.1103/PhysRevC.102.024609

Longland, R., & Sereville, N. (2020). Correlated energy uncertainties in reaction rate calculations. ASTRONOMY & ASTROPHYSICS, 642. https://doi.org/10.1051/0004-6361/202038151

Meyer, A., Sereville, N. de, Laird, A. M., Hammache, F., Longland, R., Lawson, T., … Tatischeff, V. (2020). Evaluation of the N-13(alpha, p)O-16 thermonuclear reaction rate and its impact on the isotopic composition of supernova grains. PHYSICAL REVIEW C, 102(3). https://doi.org/10.1103/PhysRevC.102.035803

Richter, W. A., Brown, B. A., Longland, R., Wrede, C., Denissenkov, P., Fry, C., … Reifarth, R. (2020). Shell-model studies of the astrophysical rp-process reactions S-34(p, gamma) Cl-35 and Cl-34g(,m)(p, gamma) Ar-35. PHYSICAL REVIEW C, 102(2). https://doi.org/10.1103/PhysRevC.102.025801

Richter, W. A., Brown, B. A., Longland, R., Wrede, C., Fry, C., Denisenkov, P., … Reifarth, R. (2020). Shell-model studies of the astrophysical rp-process reactions S-34(p,gamma)Cl-35 and Cl-34g,Cl-m(p,gamma)Ar-35. 27TH INTERNATIONAL NUCLEAR PHYSICS CONFERENCE (INPC2019), Vol. 1643. https://doi.org/10.1088/1742-6596/1643/1/012064

Hamill, C. B., Woods, P. J., Kahl, D., Longland, R., Greene, J. P., Marshall, C., … Setoodehnia, K. (2020). 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. EUROPEAN PHYSICAL JOURNAL A, 56(2). https://doi.org/10.1140/epja/s10050-020-00052-9

Dermigny, J., Iliadis, C., Champagne, A., & Longland, R. (2020). Thermonuclear reaction rate of Si-30(p , gamma) P-31. PHYSICAL REVIEW C, 102(1). https://doi.org/10.1103/PhysRevC.102.014609

Setoodehnia, K., Kelley, J. H., Marshall, C., Chaves, F. P., & Longland, R. (2019). Experimental study of Cl35 excited states via S32(α,p). Physical Review C, 99(5). https://doi.org/10.1103/physrevc.99.055812

Marshall, C., Setoodehnia, K., Kowal, K., Portillo, F., Champagne, A. E., Hale, S., … Longland, R. (2019). The Focal-Plane Detector Package on the TUNL Split-Pole Spectrograph. IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 68(2), 533–546. https://doi.org/10.1109/TIM.2018.2847938

Manwell, S., Parikh, A., Chen, A. A., Séréville, N., Adsley, P., Irvine, D., … Crom, B. L. (2018). Effectiveness of using a magnetic spectrograph with the Trojan Horse method. Journal of Physics: Conference Series, 940, 012046. https://doi.org/10.1088/1742-6596/940/1/012046

Setoodehnia, K., Marshall, C., Kelley, J. H., Liang, J., Chaves, F. P., & Longland, R. (2018). Excited states of Ca-39 and their significance in nova nucleosynthesis. PHYSICAL REVIEW C, 98(5). https://doi.org/10.1103/PhysRevC.98.055804

Martin, D., José, J., & Longland, R. (2018). On the parallelization of stellar evolution codes. Computational Astrophysics and Cosmology, 5(1). https://doi.org/10.1186/s40668-018-0025-5

Longland, R., Dermigny, J., & Marshall, C. (2018). Reaction rates for the K-39(p, gamma)Ca-40 reaction. PHYSICAL REVIEW C, 98(2). https://doi.org/10.1103/PhysRevC.98.025802

Longland, R. (2017). Correlated uncertainties in Monte Carlo reaction rate calculations. Astronomy & Astrophysics, 604, A34. https://doi.org/10.1051/0004-6361/201730911

Hunt, S., Iliadis, C., & Longland, R. (2016). Characterization of a B-10-doped liquid scintillator as a capture-gated neutron spectrometer. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 811, 108–114. https://doi.org/10.1016/j.nima.2015.12.001

Tain, J. L., Jordán, D., Agramunt, J., Algora, A., Bandac, I., Bettini, A., … Parikh, A. (2016). Measurement of very low (α,n) cross sections of astrophysical interest. Journal of Physics: Conference Series, 665, 012031. https://doi.org/10.1088/1742-6596/665/1/012031

Nsangu, C. T., Laird, A. M., Parikh, A., Adsley, P., Birch, M. D., Chen, A. A., … Wirth, H.-F. (2016). The20Ne(d,p)21Ne transfer reaction in relation to thes-process abundances. Journal of Physics: Conference Series, 665, 012026. https://doi.org/10.1088/1742-6596/665/1/012026

Buckner, M. Q., Iliadis, C., Kelly, K. J., Downen, L. N., Champagne, A. E., Cesaratto, J. M., … Longland, R. (2015). High-intensity-beam study of O-17(p,gamma)F-18 and thermonuclear reaction rates for O-17 + p. PHYSICAL REVIEW C, 91(1). https://doi.org/10.1103/physrevc.91.015812

Coc, A., Petitjean, P., Uzan, J.-P., Vangioni, E., Descouvemont, P., Iliadis, C., & Longland, R. (2015). New reaction rates for improved primordial D/H calculation and the cosmic evolution of deuterium. PHYSICAL REVIEW D, 92(12). https://doi.org/10.1103/physrevd.92.123526

Kelly, K. J., Champagne, A. E., Longland, R., & Buckner, M. Q. (2015). New recommended omega gamma for the E-r(c.m.)=458 keV resonance in Ne-22(p,gamma)Na-23. PHYSICAL REVIEW C, 92(3). https://doi.org/10.1103/physrevc.92.035805

Iliadis, C., Longland, R., Coc, A., Timmes, F. X., & Champagne, A. E. (2015). Statistical methods for thermonuclear reaction rates and nucleosynthesis simulations. Journal of Physics G: Nuclear and Particle Physics, 42(3), 034007. https://doi.org/10.1088/0954-3899/42/3/034007

Champagne, A. E., Iliadis, C., & Longland, R. (2014). Nuclear astrophysics in the laboratory and in the universe. AIP Advances, 4(4), 041006. https://doi.org/10.1063/1.4864794

Longland, R., Martin, D., & José, J. (2014). Performance improvements for nuclear reaction network integration. Astronomy & Astrophysics, 563, A67. https://doi.org/10.1051/0004-6361/201321958

Mohr, P., Longland, R., & Iliadis, C. (2014). Thermonuclear reaction rate of Ne-18(alpha, p)Na-21 from Monte Carlo calculations. PHYSICAL REVIEW C, 90(6). https://doi.org/10.1103/physrevc.90.065806

Irvine, D., Chen, A. A., Parikh, A., Setoodehnia, K., Faestermann, T., Hertenberger, R., … Wrede, C. (2013). Evidence for the existence of the astrophysically important 6.40-MeV state of31S. Physical Review C, 88(5). https://doi.org/10.1103/physrevc.88.055803

Laird, A. M., Parikh, A., Murphy, A. S. J., Wimmer, K., Chen, A. A., Deibel, C. M., … Wirth, H.-F. (2013). Isγ-Ray Emission from Novae Affected by Interference Effects in theF18(p,α)O15Reaction? Physical Review Letters, 110(3). https://doi.org/10.1103/physrevlett.110.032502

Pogrebnyak, I., Howard, C., Iliadis, C., Longland, R., & Mitchell, G. E. (2013). Mean proton and alpha-particle reduced widths of the Porter-Thomas distribution and astrophysical applications. PHYSICAL REVIEW C, 88(1). https://doi.org/10.1103/physrevc.88.015808

Cesaratto, J. M., Champagne, A. E., Buckner, M. Q., Clegg, T. B., Daigle, S., Howard, C., … Oginni, B. M. (2013). Measurement of theErc.m.=138keV resonance in the23Na(p,γ)24Mg reaction and the abundance of sodium in AGB stars. Physical Review C, 88(6). https://doi.org/10.1103/physrevc.88.065806

Setoodehnia, K., Chen, A. A., Kahl, D., Komatsubara, T., José, J., Longland, R., … Yuasa, T. (2013). Nuclear structure of30S and its implications for nucleosynthesis in classical novae. Physical Review C, 87(6). https://doi.org/10.1103/physrevc.87.065801

Sala, G., Haberl, F., José, J., Parikh, A., Longland, R., Pardo, L. C., & Andersen, M. (2012). CONSTRAINTS ON THE MASS AND RADIUS OF THE ACCRETING NEUTRON STAR IN THE RAPID BURSTER. The Astrophysical Journal, 752(2), 158. https://doi.org/10.1088/0004-637X/752/2/158

Longland, R., & Iliadis, C. (2012). Current Status of the22Ne+αs-Process Neutron Source. Journal of Physics: Conference Series, 337, 012047. https://doi.org/10.1088/1742-6596/337/1/012047

Longland, R., Lorén-Aguilar, P., José, J., García-Berro, E., & Althaus, L. G. (2012). Lithium production in the merging of white dwarf stars. Astronomy & Astrophysics, 542, A117. https://doi.org/10.1051/0004-6361/201219289

Longland, R., Iliadis, C., & Karakas, A. I. (2012). Publisher's Note: Reaction rates for thes-process neutron source22Ne +α[Phys. Rev. C85, 065809 (2012)]. Physical Review C, 86(1). https://doi.org/10.1103/physrevc.86.019903

Longland, R., Iliadis, C., & Karakas, A. I. (2012). Reaction rates for thes-process neutron source22Ne+α. Physical Review C, 85(6). https://doi.org/10.1103/physrevc.85.065809

Longland, R. (2012). Recommendations for Monte Carlo nucleosynthesis sampling. Astronomy & Astrophysics, 548, A30. https://doi.org/10.1051/0004-6361/201220386

Parikh, A., Wimmer, K., Faestermann, T., Hertenberger, R., José, J., Longland, R., … Wrede, C. (2011). Improving theP30(p,γ)S31rate in oxygen-neon novae: Constraints onJπvalues for proton-threshold states inS31. Physical Review C, 83(4). https://doi.org/10.1103/physrevc.83.045806

Longland, R., Lorén-Aguilar, P., José, J., García-Berro, E., Althaus, L. G., & Isern, J. (2011). NUCLEOSYNTHESIS DURING THE MERGER OF WHITE DWARFS AND THE ORIGIN OF R CORONAE BOREALIS STARS. The Astrophysical Journal, 737(2), L34. https://doi.org/10.1088/2041-8205/737/2/l34

Longland, R., Iliadis, C., Champagne, A. E., Newton, J. R., Ugalde, C., Coc, A., & Fitzgerald, R. (2010). Charged-particle thermonuclear reaction rates: I. Monte Carlo method and statistical distributions. Nuclear Physics A, 841(1-4), 1–30. https://doi.org/10.1016/j.nuclphysa.2010.04.008

Iliadis, C., Longland, R., Champagne, A. E., Coc, A., & Fitzgerald, R. (2010). Charged-particle thermonuclear reaction rates: II. Tables and graphs of reaction rates and probability density functions. Nuclear Physics A, 841(1-4), 31–250. https://doi.org/10.1016/j.nuclphysa.2010.04.009

Iliadis, C., Longland, R., Champagne, A. E., & Coc, A. (2010). Charged-particle thermonuclear reaction rates: III. Nuclear physics input. Nuclear Physics A, 841(1-4), 251–322. https://doi.org/10.1016/j.nuclphysa.2010.04.010

Iliadis, C., Longland, R., Champagne, A. E., & Coc, A. (2010). Charged-particle thermonuclear reaction rates: IV. Comparison to previous work. Nuclear Physics A, 841(1-4), 323–388. https://doi.org/10.1016/j.nuclphysa.2010.04.012

Newton, J. R., Iliadis, C., Champagne, A. E., Cesaratto, J. M., Daigle, S., & Longland, R. (2010). Measurement ofO17(p,γ)F18between the narrow resonances atErlab=193and519 keV. Physical Review C, 81(4). https://doi.org/10.1103/physrevc.81.045801

Coc, A., Iliadis, C., Longland, R., Champagne, A. E., Fitzgerald, R., Susa, H., … Utsunomiya, H. (2010). Monte-Carlo Reaction Rate Evaluation for Astrophysics. Presented at the TOURS SYMPOSIUM ON NUCLEAR PHYSICS AND ASTROPHYSICS—VII. https://doi.org/10.1063/1.3455927

deBoer, R. J., Wiescher, M., Görres, J., Longland, R., Iliadis, C., Rusev, G., & Tonchev, A. P. (2010). Photoexcitation of astrophysically important states inMg26. II. Ground-state-transition partial widths. Physical Review C, 82(2). https://doi.org/10.1103/physrevc.82.025802

Carson, S., Iliadis, C., Cesaratto, J., Champagne, A., Downen, L., Ivanovic, M., … Tonchev, A. P. (2010). Ratio of germanium detector peak efficiencies at photon energies of 4.4 and 11.7 MeV: Experiment versus simulation. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 618(1-3), 190–198. https://doi.org/10.1016/j.nima.2010.02.128

Longland, R., Iliadis, C., Cesaratto, J. M., Champagne, A. E., Daigle, S., Newton, J. R., & Fitzgerald, R. (2010). Resonance strength inNe22(p,γ)Na23from depth profiling in aluminum. Physical Review C, 81(5). https://doi.org/10.1103/physrevc.81.055804

Longland, R., Iliadis, C., Rusev, G., Tonchev, A. P., deBoer, R. J., Görres, J., & Wiescher, M. (2009). Photoexcitation of astrophysically important states inMg26. Physical Review C, 80(5). https://doi.org/10.1103/physrevc.80.055803

Gintautas, V., Champagne, A. E., Kondev, F. G., & Longland, R. (2009). Thermal equilibration ofLu176viaKmixing. Physical Review C, 80(1). https://doi.org/10.1103/physrevc.80.015806

Newton, J. R., Longland, R., & Iliadis, C. (2008). Matching of experimental and statistical-model thermonuclear reaction rates at high temperatures. Physical Review C, 78(2). https://doi.org/10.1103/physrevc.78.025805

Ugalde, C., Champagne, A. E., Daigle, S., Iliadis, C., Longland, R., Newton, J. R., … Wrede, C. (2007). Experimental evidence for a natural parity state inMg26and its impact on the production of neutrons for thesprocess. Physical Review C, 76(2). https://doi.org/10.1103/physrevc.76.025802

Newton, J. R., Iliadis, C., Champagne, A. E., Longland, R., & Ugalde, C. (2007). Remeasurement of the 193 keV resonance inO17(p,α)N14. Physical Review C, 75(5). https://doi.org/10.1103/physrevc.75.055808

Longland, R., Iliadis, C., Champagne, A. E., Fox, C., & Newton, J. R. (2006). Nuclear astrophysics studies at the LENA facility: The -ray detection system. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 566(2), 452–464. https://doi.org/10.1016/j.nima.2006.07.006

Fox, C., Iliadis, C., Champagne, A. E., Fitzgerald, R. P., Longland, R., Newton, J., … Runkle, R. (2005). Thermonuclear reaction rate ofO17(p,γ)F18. Physical Review C, 71(5). https://doi.org/10.1103/physrevc.71.055801