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

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; group leader for experiments planned for, and carried out at, TRIUMF, NSCL, Yale University, University of Tokyo (CNS), Technical University of Munich, and University of Tsukuba; evaluation and dissemination of stellar reaction rates.

Selected Publications (last six years)

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)

Structure of ³⁰S with ³²S(p,t)³⁰S and the thermonuclear ²⁹P(p,gamma)³⁰S reaction rate
K. Setoodehnia, A. A. Chen, J. Chen, J. A. Clark, C. M. Deibel, S. D. Geraedts, D. Kahl, P. D. Parker, D. Seiler, and C. Wrede.
Physical Review C (Rapid Communications) 82 022801 (2010)

First direct measurement of the ²³Mg(p,gamma)²⁴Al reaction
The DRAGON collaboration (L. Erikson, et al.)
Physical Review C 81 045808 (2010)

Background suppression by the DRAGON radiative capture facility at TRIUMF/ISAC
The DRAGON collaboration (D. Hutcheon, et al.)
Nuclear Instruments and Methods B 266 4171 (2008)

Measurement of the ⁴⁰Ca(alpha,gamma)⁴⁴Ti reaction relevant for supernova nucleosynthesis
The DRAGON collaboration (C. Vockenhuber, et al.)
Physical Review C 76 035801 (2007)

Measurement of the cascade transition via the first excited state of ¹⁶O in the ¹²C(alpha,gamma)¹⁶O reaction, and its S factor in stellar helium burning
The DRAGON collaboration (C. Matei, et al.)
Physical Review Letters 97 242503 (2006)

Measurement of the Ecm=184 keV resonance strength in the ^26gAl(p,gamma)²⁷Si reaction
The DRAGON collaboration (C. Ruiz, et al.)
Physical Review Letters 96 252501 (2006)