Alan A. Chen
Professor
PhD 2000, Yale University
BSc 1993, University of Toronto
   

Research Interests

Experimental nuclear astrophysics; explosive stellar nucleosynthesis; measurement of reaction cross sections and relevant nuclear level parameters; direct measurements with radioactive ion beams; indirect approaches with transfer reactions and in-beam gamma-ray spectroscopy; nuclear reactions; group leader for experiments planned for, and carried out at, TRIUMF, NSCL, Yale University, University of Tokyo (CNS), Technical University of Munich, Argonne National Laboratory, University of Tsukuba; evaluation and dissemination of stellar reaction rates.

Selected Publications (last six years)

Isospin mixing reveals ³⁰P(p,gamma)³¹S resonance influencing nova nucleosynthesis
M. B. Bennett, C. Wrede, B. A. Brown, S. N. Liddick, D. Perez-Loureiro, D. W. Bardayan, A. A. Chen, K. A. Chipps, C. Fry, B. E. Glassman, C. Langer, N. R. Larson, E. I. McNeice, Z. Meisel, W. Ong, P. D. O'Malley, S. D. Pain, C. J. Prokop, H. Schatz, S. B. Schwartz, S. Suchyta, P. Thompson, M. Walters, and X. Xu.
Physical Review Letters 116 102502 (2016)

Evidence of soft dipole resonance in ¹¹Li with isoscalar character
R. Kanungo, A. Sanetullaev, J. Tanaka, S. Ishimoto, G. Hagen, T. Myo, T. Suzuki, C. Andreiou, P. Bender, A. A. Chen, B. Davids, J. Fallis, J. P. Fortin, N. Galinski, A. T. Gallant, P. E. Garrett, G. Hackman, B. Hadinia, G. Jansen, M. Keefe, R. Kruecken, J. Lighthall, E. McNeice, D. Miller, T. Otsuka, J. Purcell, J. S. Randhawa, T. Roger, A. Rojas, H. Savajols, A. Shotter, I. Tanihata, I. J. Thompson, C. Unsworth, P. Voss, and Z. Wang.
Physical Review Letters 114 192502 (2015)

Discovery of ^34g,mCl(p,gamma)³⁵Ar resonances activated at classical nova temperatures
C. Fry, C. Wrede, S. Bishop, B. A. Brown, A. A. Chen, T. Faestermann, R. Hertenberger, A. Parikh, D. Perez-Loureiro, H.-F Wirth, A. Garcia, and R. Ortez
Physical Review C 91 015803 (2015)

Examination of the role of the ¹⁴O(alpha,p)¹⁷F reaction rate in type-I x-ray bursts
J. Hu, J. J. He, A. Parikh, S. W. Xu, H. Yamaguchi, K. David, P. Ma, J. Su, H. W. Wang, T. Nakao, Y. Wakabayashi, T. Teranishi, J. Y. Moon, H. S. Jung, T. Hashimoto, A. Chen, D. Irvine, and S. Kubono.
Physical Review C 90 025803 (2014)

In-beam gamma-ray spectroscopy of ³⁰P via the ²⁸Si(³He, p-gamma)³⁰P reaction
E. McNeice, K. Setoodehnia, B. Singh, Y. Abe, D.N. Binh, A. A. Chen, J. Chen, S. Cherubini, S. Fukuoka, T. Hashimoto, T. Hayakawa, Y. Ishibashi, Y. Ito, D. Kahl, T. Komatsubara, S. Kubono, T. Mori guchi, D. Nagae, R. Nishikiori, T. Niwa, A. Ozawa, T. Shizuma, H. Suzuki, H. Yamaguchi, and T. Yuasa.
Nuclear Data Sheets 120 88 (2014)

Classical-Nova Contribution to the Milky Way's ²⁶Al Abundance: Exit Channel of the Key ²⁵Al(p,gamma)²⁶Si Resonance
M. B. Bennett, C. Wrede, K. A. Chipps, J. Jose, N. Liddick, M. Santia, A. Bowe, A. A. Chen, N. Cooper, D. Irvine, E. McNeice, F. Montes, F. Naqvi, R. Ortez, S. D. Pain, J. Pereira, C. Prokop, J. Quaglia, S. J. Quinn, S. B. Schwartz, S. Shanab, A. Simon, A. Spyrou, and E. Thiagalingam.
Physical Review Letters 111 232503 (2013)

Evidence for the existence of the astrophysically important 6.40-MeV state of ³¹S
D. Irvine, A. A. Chen, A. Parikh, K. Setoodehnia, T. Faestermann, R. Hertenberger, H.-F. Wirth, V. Bildstein, S. Bishop, J. A. Clark, C. M. Deibel, J. Hendriks, C. Herlitzius, R. Kruecken, W. N. Lennard, O. Lepyoshkina, R. Longland, G. Rugel, D. Seiler, K. Straub, and C. Wrede.
Physical Review C 88 055803 (2013)

Nuclear structure of ³⁰S and its implications for nucleosynthesis in classical novae
K. Setoodehnia, A. A. Chen, D. Kahl, T. Komatsubara, J. Jose, R. Longland, Y. Abe, D. N. Binh, J. Chen, S. Cherubini, J. A. Clark, C. M. Deibel, S. Fukuoka, T. Hashimoto, T. Hayakawa, J. Hendriks, Y. Ishibashi, Y. Ito, S. Kubono, W. N. Lennard, T. Moriguchi, D. Nagae, R. Nishikiori, T. Niwa, A. Ozawa, P. D. Parker, D. Seiler, T. Shizuma, H. Suzuki, C. Wrede, H. Yamaguchi, and T. Yuasa.
Physical Review C 87 065801 (2013)

Is gamma-ray emission from novae affected by interference effects in the ¹⁸F(p,alpha)¹⁵O reaction?
A. M. Laird, A. Parikh, A. St. J. Murphy, K. Wimmer, A. A. Chen, C. M. Deibel, T. Faestermann, S. P. Fox, B. R. Fulton, R. Hertenberger, D. Irvine, J. Jose, R. Longland, D. Mountford, B. Sambrook, D. Seiler, and H.-F. Wirth.
Physical Review Letters 110 032502 (2013)

²⁶Si excited states via one-neutron removal from a ²⁷Si radioactive ion beam
J. Chen, A. A. Chen, A. M. Amthor, D. Bazin, A. D. Becerril, A. Gade, D. Galaviz, T. Glasmacher, D. Kahl, G. Lorusso, M. Matos, C. V. Ouellet, J. Pereira, H. Schatz, K. Smith, B. Wales, D. Weisshaar, and R. G. T. Zegers.
Physical Review C 85 045809 (2012)

Strong ²⁵Al+p resonances via elastic proton scattering with a radioactive ²⁵ Al beam
J. Chen, A. A. Chen, G. Amadio, S. Cherubini, H. Fujikawa, S. Hayakawa, J. J. He, N. Iwasa, D. Kahl, L. H. Khiem, S. Kubono, S. Kurihara, Y. K. Kwon, M. La Cognata, J. Y. Moon, M. Niikura, S. Nishimura, J. Pearson, R. G. Pizzone, T. Teranishi, Y. Togano, Y. Wakabayashi, and H. Yamaguchi.
Physical Review C 85 015805 (2012)

Improving the ³⁰P(p,gamma)³¹S rate in oxygen-neon novae: Constraints on J-Pi values for proton-threshold states in ³¹S
A. Parikh, K. Wimmer, T. Faestermann, R. Hertenberger, J. Jose, R. Longland, H.-F. Wirth, V. Bildstein, S. Bishop, A. A. Chen, J. A. Clark, C. M. Deibel, C. Herlitzius, R. Kruecken, D. Seiler, K. Straub, and C. Wrede.
Physical Review C 83 045806 (2011)

Spins and parities of astrophysically important ³⁰S states from ²⁸Si(³He, n-gamma)³⁰S
K. Setoodehnia, A. A. Chen, T. Komatsubara, S. Kubono, D. N. Binh, J. F. Carpino, J. Chen, T. Hashimoto, T. Hayakawa, Y. Ishibashi, Y. Ito, D. Kahl, T. Moriguchi, H. Ooishi, A. Ozawa, T. Shizuma, Y. Sugiyama, and H. Yamaguchi.
Physical Review C 83 018803 (2011)