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Robert Grzywacz

Professor of Physics, UTK


Robert Grzywacz is Professor of Physics at the Department of Physics and Astronomy at the University of Tennessee and a visiting research scientist at the Oak Ridge National Laboratory's (ORNL) Physics Division. He received his Ph.D. in 1998 in Nuclear Physics from Warsaw University in Poland. In year 2001-2003 was a Wigner Fellow at the Oak Ridge National Laboratory.

His research is focused on studies of very short lived, "exotic" nuclei which are of interest for both fundamental understanding of the nuclear many body problem as well as in astrophysical and energy applications. He and his group carry out experiments at accelerator facilities, which are capable to produce the most exotic species. Until most recently, most if his successful and pioneering studies were carried out at the Holifield Radioactive Ion Beam Facility at ORNL which applied digital signal processing techniques to nuclear spectroscopy of decays of rare isotopes.

His research is sponsored by DOE Office of Science and NNSA. He is the coauthor of nearly 200 peer reviewed publications.


Ph.D. in 1998 in Nuclear Physics from Warsaw University in Poland

Awards and Recognitions

2007 UT Chancellor's Professional Promise in Research and Creative Achievement


R. Grzywacz, R. Anne, G. Auger, D. Bazin, C. Borcea, V. Borrel, J.M. Corre, T. Dorfler, A.Fomichov, M. Gaelens, D. Guillemaud-Mueller, R. Hue, M. Huyse, Z. Janas, H. Keller, M. Lewitowicz, S. Lukyanov, A. C. Mueller, Yu. Penionzhkevich, M. Pfutzner, F. Pougheon, K. Rykaczewski, M. G. Saint-Laurent, K. Schmidt, W. -D. Schmidt-Ott, O. Sorlin, J. Szerypo, O. Tarasov, J. Wauters, J. Zylicz, 'Identification of us-Isomers produced in the Quasifragmentation of a 112Sn Beam' , Phys. Lett. B 355 (1995) 439-446

R. Grzywacz, R. Beraud, C. Borcea, A. Emsallem, M. Glogowski, H. Grawe, D. Guillemaud-Mueller, M. Hjorth-Jensen, M. Houry, M.Lewitowicz, A. C. Mueller, A. Nowak, A. Plochocki, M. Pfutzner, K. Rykaczewski, M. G. Saint-Laurent, J. E. Sauvestre, M. Schaefer, O. Sorlin, J. Szerypo, W. Trinder, S. Viteritti, J. Winfield, 'New island of µs-isomers in neutron-rich nuclei around the Z=28 and N=40 shell closures' , Phys. Rev. Lett. 81, 766 (1998)

R.Grzywacz 'Applications of Digital Pulse Processing in Nuclear Spectroscopy', Nucl. Inst. and Meth. B204, 649 (2003) 4. M. Karny, R.K. Grzywacz,J.C. Batchelder, C.R. Bingham, C.J. Gross, K. Hagino, J.H. Hamilton, Z. Janas, W.D. Kulp, J.W. McConnell, M. Momayezi, A. Piechaczek, K.P. Rykaczewski, P.A. Semmes, M.N. Tantawy,J.A. Winger, C.H. Yu and E.F. Zganjar 'Fine Structure in Proton Emission from 145Tm Discovered with the Novel Technique of Digital Signal Processing', Phys. Rev. Lett. 90, 012502 (2003)

C. Mazzocchi, R. Grzywacz, J.C. Batchelder, C.R. Bingham, D. Fong, J.H. Hamilton, J.K. Hwang, M. Karny, W. Krolas, S.N. Liddick, A.F. Lisetskiy, P.F. Mantica, A.C. Morton, W.F. Mueller, K.P. Rykaczewski, M. Steiner, A. Stolz and J.A. Winger, ‘Low energy structure of even-even Ni isotopes close to78Ni’, Phys. Lett. B 622 (2005) 45

S.N. Liddick, R. Grzywacz, C. Mazzocchi, R.D. Page, K.P. Rykaczewski, J.C. Batchelder, C.R. Bingham, I.G. Darby, G. Drafta, C. Goodin, C.J. Gross, J.H. Hamilton, A.A. Hecht, J.K. Hwang, S. Ilyushkin, D.T. Joss, A. Korgul, W. Krolas, K. Lagergren, K. Li, M.N. Tantawy, J. Thomson and J.A. Winger, ‘Discovery of 109Xe and 105Te: superallowed alpha-decay near doubly magic 100Sn’, Phys. Rev. Lett. 97, 082501 (2006).

C. Mazzocchi, R. Grzywacz, S.N. Liddick, K.P. Rykaczewski, H. Schatz, J.C. Batchelder, C.R. Bingham, C.J. Gross, J.H. Hamilton, J.K. Hwang, S. Ilyushkin,A. Korgul, W. Krolas, K. Li, R.D. Page, D. Simpson, and J.A. Winger, ‘The alpha decay of 109I and its implications for the proton decay of 105Sb and the astrophysical rapid proton-capture process’ Phys. Rev. Lett. 98, 212501,(2007)

K.Miernik, W.Dominik, Z.Janas, M.Pfutzner, L.Grigorenko, C.R.Bingham, H.Czyrkowski, M.Cwiok, I.G.Darby, R.Dabrowski, T.Ginter, R.Grzywacz, M.Karny, A.Korgul, W.Kusmierz, S.N.Liddick, M.Rajabali, K.Rykaczewski, A.Stolz “Two-Proton Correlations in the Decay of 45Fe'', Phys.Rev.Lett. 99, 192501 (2007)

I. G. Darby, R. K. Grzywacz, J. C. Batchelder, C. R. Bingham, L. Cartegni, C. J. Gross, M. Hjorth-Jensen, D. T. Joss, S. N. Liddick, W. Nazarewicz, S. Padgett, R. D. Page, T. Papenbrock, M. M. Rajabali, J. Rotureau, and K. P. Rykaczewski “Orbital Dependent Nucleonic Pairing in the Lightest Known Isotopes of Tin” Phys. Rev. Lett. 105, 162502 (2010)

M. Madurga, R. Surman, I. N. Borzov, R. Grzywacz, K.P. Rykaczewski, C. J. Gross, D. Miller, D. W. Stracener, J. C. Batchelder, N. T. Brewer, L. Cartegni, J. H. Hamilton, J. K. Hwang, S. H. Liu, S. V. Ilyushkin, C. Jost, M. Karny, A. Korgul, W. Krolas, A. Kuzniak, C. Mazzocchi, A. J. Mendez II, K. Miernik, S. W. Padgett, S. V. Paulauskas, A. V. Ramayya, J. A. Winger, M. Wolinska-Cichocka, and E. F. Zganjar “New Half-lives of r-process Zn and Ga Isotopes Measured with Electromagnetic Separation”, Phys. Rev. Lett. 109, 112501 (2012)

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