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Akaa Daniel Ayangeakaa, Assistant Professor
17.

Education

  • University of Notre Dame, Notre Dame, IN (2007-2013)
    • Ph.D. - Experimental Nuclear Physics
    • Dissertation: "Exotic Modes of Collective Nuclear Excitations"
    • M.S. - Nuclear Physics

  • University of Surrey, Guildford, United Kingdom (2005-2006)
    • M.Sc. - Radiation and Environmental Protection

  • Benue State University, Makurdi, Nigeria (1999 - 2002)
    • B.Sc. (Hons) - Physics

Professional Experience

  • Assistant Professor, United States Naval Academy (2017 - Present)
  • Postdoctoral Fellow, Argonne National Laboratory (2013-2016)
  • Adjunct Professor, Chicago State University, Chicago IL (2015 - 2015)
  • Research/Teaching Assistant, University of Notre Dame, Notre Dame IL (2007-2013)
  • Lecturer, Benue State University, Makurdi, Nigeria (2005 - 2007)

Honors and Awards

  • Eli J. and Helen Shaheen Graduate School Award in Science. The highest honor bestowed on a Notre Dame graduate student (2013)
  • Outstanding Graduate Student Teaching Award. Presented by the University of Notre Dame Kaneb Center for Teaching and Learning (2010)
  • Valedictorian, Combined 3rd, 4th, & 5th Convocation of Benue State University, Nigeria (2002)
  • Best Poster Presented at the biannual Nuclear Chemistry Gordon Research Conference. Selected for oral presentation. (2015)
  • Best Poster Presented at the biannual Nuclear Chemistry Gordon Research Conference. Selected for oral presentation. (2013)

Research Focus

One of the major challenges of contemporary nuclear structure research is understanding the internal structure of nuclei with exotic neutron-proton ratios and interpreting the various phenomena associated with their underlying nucleon configurations. Fundamentally, the structure and hence, the shape of these nuclei is governed by the interplay of macroscopic and microscopic shell effects. Consequently, investigations associated with the influence of the various shape degrees of freedom on the collective and single-particle excitation properties remain a central theme of current research efforts. My research to date has focused on investigating the nature of these excitations, particularly looking at the interplay of collective and single-particle degrees of freedom, the evolution of collectivity and accompanying shape-phase transitions/coexistence, as well as searching for evidence of stable asymmetric shapes in neutron-rich nuclei with extreme isospin ratios. The primary objective is to construct a comprehensive understanding of the physical structure arising from these excitations from the measured ground- and excited-state properties and develop a coherent description of the nuclear system, in general. This work is accomplished mostly by using a number of in-beam gamma-ray spectroscopic techniques such as Coulomb excitation, fusion-evaporation and deep in-elastic reactions, and lifetime measurements to probe the underlying structure. 

 

Selected Publications:

  1. C. M. Petrache, Q. B. Chen, S. Guo, A. D. Ayangeakaa, U. Garg, J. T. Matta, B. K. Nayak, D. Patel, J. Meng, M. P. Carpenter, C. J. Chiara, R. V. F. Janssens, F. G. Kondev, T. Lauritsen, D. Seweryniak, S. Zhu, S. S. Ghugre, and R. Palit: Triaxial- band structures and evidence for chiral rotation in 133La. In Physical Review C 94, 064309 (2016). 


  2. M. Albers, S. Zhu, A. D. Ayangeakaa, R. V. F. Janssens, J. Gellanki, I. Ragnarsson, M. Alcorta, T. Baugher, P. F. Bertone, M. P. Carpenter, C. J. Chiara, P. Chowdhury, H. M. David, A. N. Deacon, B. DiGiovine, A. Gade, C. R. Hoffman, F. G. Kondev, T. Lauritsen, C. J. Lister, E. A. McCutchan, C. Nair, A. M. Rogers, and D. Seweryniak: Single-particle and collective excitations in 62Ni. In Physical Review C 94, 034301 (2016). 


  3. C. M. Petrache, S. Guo, A. D. Ayangeakaa, U. Garg, J. T. Matta, B. K. Nayak, D. Patel, M. P. Carpenter, C. J. Chiara, R. V. F. Janssens, F. G. Kondev, T. Lauritsen, D. Seweryniak, S. Zhu, S. S. Ghugre, and R. Palit7: Triaxiality and exotic rotations at high spins in 134Ce. In Physical Review C 93, 064305 (2016).

  4. 
A. D. Ayangeakaa, U. Garg, C. M. Petrache, S. Guo, P. W. Zhao, J. T. Matta, B. K. Nayak, D. Patel, R. V. F. Janssens, M. P. Carpenter, C. J. Chiara, F. G. Kondev, T. Lauritsen, D. Seweryniak, S. Zhu, S. S. Ghugre, and R. Palit: In-beam spectroscopy of medium- and high-spin states in 133Ce. In Physical Review C 93, 054317 (2016). 


  5. A. D. Ayangeakaa, R. V. F. Janssens, C. Y. Wu, J. M. Allmond, J. L. Wood, S. Zhu, M. Albers, M. P. Carpenter, H. David, C. Hoffman, B. Kay, A. Korichi, T. Lauritsen, D. Seweryniak, B. Bucher, A. O. Macchiavelli, A. Wiens, C. J. Chiara, J. Harker, H. Crawford, A. Richard, K. Kolds, A. Korichi: Shape Coexistence and the role axial asymmetry in 72Ge. In Physics Letters B 754, 254 (2016). 


  6. A. D. Ayangeakaa, S. Zhu, R.V.F. Janssens, M. Albers, M. Alcorta, T. Baugher, P. F. Bertone, M.P. Carpenter, C. J. Chiara, P. Chowdhury, H. David, A. N. Deacon, A. Gade, B. DiGiovine,C. R. Hoffman, F. G. Kondev, T. Lauritsen, C. J. Lister, E. A. McCutchan,D. S. Moerland, C. Nair, A. M. Rogers, and D. Seweryniak: The role of the νg9/2 orbital in the development of collectivity in the A ∼ 60 region: The case of 61Co. In: Physical Review C 91, 044327 (2015).

  7. 
J.T. Matta, U. Garg, W. Li, S. Frauendorf, A. D. Ayangeakaa, D.Patel, K.W. Schlax, R. Palit, S. Saha, J. Sethi, T. Trivedi, S. S. Ghugre, R. Raut, A. K. Sinha, R. V. F. Janssens, S. Zhu, M. P. Carpenter, T. Lauritsen, D. Seweryniak, C. J. Chiara, F. G. Kondev, D. J. Hartley, C. M. Petrache, S. Mukhopadhyay, D. Vijaya Lakshmi, M. Kumar Raju, P.V. Madhusudhana Rao, S.K. Tandel, S. Ray, F.Do ̈nau. Transverse Wobbling in 135Pr. In: Physical Review Letters 114, 082501(2015)

  8. A.O. Macchiavelli, A. D. Ayangeakaa, S. Frauendorf, U. Garg, and M. A. Caprio: Tidal Waves in 102Pd: A Phenomenological Interpretation. In: Physical Review C 90, 047304 (2014). 


  9. A. D. Ayangeakaa, U. Garg, M.D. Anthony, S. Frauendorf, J.T. Matta, D. Patel, B.K. Nayak, S.S. Ghugre, Q.B. Chen, S.Q. Zhang, P.W. Zhao, B. Qi, J. Meng, M.P. Carpenter, C. Chiara, R.V.F Janssens, F. Kondev, T. Lauritsen, D. Sewerniak, A. Torben, S. Zhu, R. Palit: Evidence for multiple chiral doublet (MχD) bands in 133Ce. In: Physical Review Letters 110, 172504 (2013) 


  10. A. D. Ayangeakaa, U. Garg, M.A. Caprio, M.P. Carpenter, S.S. Ghugre, R.V.F. Janssens, F.G. Kondev, J.T. Matta, S. Mukhopadhyay, D. Patel, D. Seweryniak, J. Sun, S. Zhu, S. Frauendorf: Tidal waves in 102Pd: A rotating condensate of multiple d-bosons. In: Physical Review Letters 110, 102501 (2013) 


  11. N.J. Thompson, P.H. Regan, A.B. Garnsworth, A.D. Ayangeakaa, H.C. Ai, L. Amon, R.B. Cakirli, R.F. Casten, C.R. Fitzpatrick, S.J. Freeman, G. Gurdal, A. Heinz, G.A. Jones, E.A. McCutchan, J. Qian, V. Werner, S.J. Williams, R. Winkler: Spectroscopy of 91Zr at medium to high spins. In: Acta Physica Polonica B 38, (2007) 1381. 


  12. E.A. Agba, and A.D. Ayangeakaa: Radiation levels from computer monitor screens within Benue State University, Makurdi, Nigeria. In: Nigerian Journal of Physics 17, 46 (2005)

Akaa D. Ayangeakaa

United States Naval Academy
Department of Physics
572c Holloway Road
Annapolis, MD 21402

Email: ayangeak@usna.edu
P
hone: (410) 293-6666
Office: CH 278
Lab: CH 028

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