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Division of Nuclear Structure Theory in 1998-1999

Permanent staff (January 1, 2000):

Prof. Jacek Dobaczewski, head
Prof. Witold Nazarewicz
Prof. Stanis
\law G. Rohozinski
Dr. Wojciech Satu
Dr. Tomasz Werner

Students (January 1, 2000):

Rainald Kirchner (PhD)
Przemys\law Olbratowski (PhD)
Elzbieta Perlinska (PhD)

Scientific activities:

The nuclear structure theory group works in close collaboration with the group at the Warsaw Institute of Technology (Prof. Stefan Cwiok, Dr. Wanda Dudek, and Dr. Piotr Magierski) and with Dr. Weronika P\lóciennik of the So\ltan Institute of Nuclear Studies. In 1999 we lost our teacher, friend, and collaborator; on September 5, 1999 Professor Zdzis\law Szymanski, the father of nuclear theory in Poland, passed away during the Nuclear Physics Summer School in Krzyze. He was actively doing research till his very last days. We shall always remember him.

During past several years we worked on numerous scientific projects, some of them within the grant of the Polish Committee for Scientific Research, No. 2 P03B 040 14. Our activity is focused on investigating the following main research directions:

Scientific achievements:

In 1998 and 1999, five members of our nuclear structure theory group have published 30 papers in refereed periodicals (see the list below), and have presented 31 invited talks and 14 contributions at international conferences. During this period of time we have realized the following main research projects:

Papers published in refereed periodicals in 1998 and 1999

 Theoretical Aspects of Science with Radioactive Nuclear Beams, J. Dobaczewski, W. Nazarewicz, Phil. Trans. R. Soc. Lond. A 356 (1998) 2007

 D2h-symmetric nuclear shapes of higher multipolarities, S.G. Rohozinski, Heavy Ion Phys. 7 (1998) 63

 Dependence of direct neutron capture on nuclear structure models, T. Rauscher, R. Bieber, H. Oberhummer, K.-L. Kratz, J. Dobaczewski, P. Möller, M. Sharma, Phys. Rev. C57 (1998) 2031

 Shell effects in superdeformed minima, P.-H. Heenen, J. Dobaczewski, W. Nazarewicz, P. Bonche, T.L. Khoo, Phys. Rev. C57 (1998) 1719

 Prompt proton decay of a well-deformed rotational band in 58Cu, D. Rudolph, C. Baktash, J. Dobaczewski, W. Nazarewicz, W. Satu\la, M.J. Brinkman, M. Devlin, H.-Q. Jin, D.R. LaFosse, L.L. Riedinger, D.G. Sarantites, C.-H. Yu, Phys. Rev. Lett. 80 (1998) 3018

 Shell corrections for finite depth potentials: Particle continuum effects, T. Vertse, A.T. Kruppa, R.J. Liotta, W. Nazarewicz, N. Sandulescu, T.R. Werner, Phys. Rev. C57 (1998) 3089

 Odd-even staggering of nuclear masses: pairing or shape effect?, W. Satu\la, J. Dobaczewski, W. Nazarewicz, Phys. Rev. Lett. 81 (1998) 3599

 Rotating pseudo-oscillator scheme: pseudo-spin symmetry and identical bands, Z. Szymanski, W. Nazarewicz, Phys. Lett. B433 (1998) 229

 Band structure in 79Y and the question of T=0 pairing, S.D. Paul, C. Baktash, W. Satu\la, C.J. Gross, I. Birrel, R.M. Clark, M. Devlin, P. Fallon, A. Galindo-Uribarri, T. Ginter, D.R. LaFosse, F. Lerma, I.Y. Lee, A.O. Macchiavelli, B. Macdonald, A. Piechaczek, D.C. Radford, W. Reviol, L.L. Riedinger, D. Rudolph, K. Rykaczewski, D.G. Sarantites, J.X. Saladin, D. Shapira, G.N. Sylvan, S.L. Tabor, K.S. Toth, W. Weintraub, D.F. Winchell, V.Q. Wood, R. Wyss, C.H. Yu, Phys. Rev. C58 (1998) R3037

 Enahanced deformation in light Pr nuclei: the role of the $\nu h_{9/2}$ orbital., B.H. Smith, L.L. Riedinger, W. Reviol, W. Satu\la, A. Galindo-Uribarri, D.G. Sarantites, J.N. Wilson, S.M. Mullins, H.Q. Jin, D. LaFosse, Phys. Lett. B443 (1998) 89

 High-spin $\gamma$-ray spectroscopy in the vicinity of 56Ni, D. Rudolph, C. Baktash, W. Satu\la, J. Dobaczewski, W. Nazarewicz, M.J. Brinkman, M. Devlin, H.-Q. Jin, D.R. LaFosse, L.L. Riedinger, D.G. Sarantites, C.-H. Yu, Nucl. Phys. A630 (1998) 417c

 Frontiers of nuclear structure, W. Nazarewicz, Nucl. Phys. A630 (1998) 239c

 New discrete basis for nuclear structure studies, M.V. Stoitsov, W. Nazarewicz, S. Pittel, Phys. Rev. C58 (1998) 2092

 Masses and radii of spherical nuclei calculated in various microscopic approaches, Z. Patyk, A. Baran, J.F. Berger, J. Dechargé, J. Dobaczewski, P. Ring, A. Sobiczewski, Phys. Rev. C58 (1999) 704

 Rotational bands in the doubly magic nucleus 56Ni, D. Rudolph, C. Baktash, M.J. Brinkman, E. Caurier, D.J. Dean, M. Devlin, J. Dobaczewski, P.H. Heenen, H.-Q. Jin, D.R. LaFosse, W. Nazarewicz, F. Nowacki, A. Poves, L.L. Riedinger, D.G. Sarantites, W. Satu\la, C.-H. Yu, Phys. Rev. Lett. 82 (1999) 3763

 Continuum effects for the mean-field and pairing properties of weakly bound nuclei, K. Bennaceur, J. Dobaczewski, M. P\loszajczak, Phys. Rev. C60 (1999) 034308

 Beta decay of r-process waiting-point nuclei in a self-consistent approach, J. Engel, M. Bender, J. Dobaczewski, W. Nazarewicz, R. Surman, Phys. Rev. C60 (1999) 014302

 Shape coexistence and the effective nucleon-nucleon interaction, P.-G. Reinhard, D.J. Dean, W. Nazarewicz, J. Dobaczewski, J.A. Maruhn, M.R. Strayer, Phys. Rev. C60 (1999) 014316

 Comparison of superdeformed bands in 61Zn and 60Zn: Possible evidence for T=0 pairing, C.-H. Yu, C. Baktash, J. Dobaczewski, J.A. Cameron, C. Chitu, M. Devlin, J. Eberth, A. Galindo-Uribarri, D.S. Haslip, D.R. LaFosse, T.J. Lampman, I.-Y. Lee, F. Lerma, A.O. Macchiavelli, S.D. Paul, D.C. Radford, D. Rudolph, D.G. Sarantites, C.E. Svensson, J.C. Waddington, J.N. Wilson, Phys. Rev. C60 (1999) 031305

 Structure of nuclei at extreme values of the isospin, J. Dobaczewski, Acta Phys. Pol. B30 (1999) 1647

 Structure of Odd-N Superheavy Elements, S. Cwiok, W. Nazarewicz, and P.H. Heenen, Phys. Rev. Lett. 83 (1999) 1108

 Origin of unit alignment in superdeformed bands in A=190 nuclei, P. Fallon, P-H. Heenen, W. Satu\la, R.M. Clark, F.S. Stephens, M.A. Delaplanque, R.M. Diamond, I.Y. Lee, A.O. Machiavelli, K. Vetter, Phys. Rev. C60 (1999) 044301

 Experimental Test of the Polarization Direction Correlation Method (PDCO), K.Starosta, T. Morek, Ch. Droste, S.G. Rohozinski, J. Srebrny, A. Wierzchucka, M. Bergström, B. Herskind, E. Melby, T. Czosnyka, P.J. Napiórkowski, Nucl. Instruments and Methods 423 (1999) 16

 PPCO: Polarization-Polarization Correlation from Oriented Nuclei, Ch. Droste, K. Starosta, A. Wierzchucka, T. Morek, S.G. Rohozinski, J. Srebrny, M. Bergström, B. Herskind, E. Weso\lowski, Nucl. Instruments and Methods 430 (1999) 260

 Collective Quadrupole Excitations in the 50<Z,N<82 Nuclei with the general Bohr Hamiltonian, L. Próchniak, K. Zajac, K. Pomorski, S.G. Rohozinski, J. Srebrny, Nucl. Phys. A648 (1999) 181

 Collective Quadrupole Excitations in Even-Even Ru Isotopes, K. Zajac, L. Próchniak, K. Pomorski, S.G. Rohozinski, J. Srebrny, Acta Phys. Pol. B30 (1999) 765

 The Low-lying Quadrupole Collective Excitations of Ru and Pd Isotopes, K. Zajac, L. Próchniak, K. Pomorski, S.G. Rohozinski, J. Srebrny, Nucl. Phys. A653 (1999) 71

 Proton Emitters 140Ho and 141Ho: Probing the Structure of Unbound Nilsson Orbitals, K. Rykaczewski, J.C. Batchelder, C.R. Bingham, T. Davinson, T.N. Ginter, C.J. Gross, R. Grzywacz, M. Karny, B.D. MacDonald, J.F. Mas, J.W. McConnell, A. Piechaczek, R.C. Slinger, K.S. Toth, W.B. Walters, P.J. Woods, E.F. Zganjar, B. Barmore, L.Gr. Ixaru, A.T. Kruppa, W. Nazarewicz, M. Rizea, and T. Vertse, Phys. Rev. C60 (1999) 011301

 Studies of Nuclei at and Beyond the Proton Drip-Line with Stable and Radioactive Beams at HRIBF, K. Rykaczewski, J.C. Batchelder, C.R. Bingham, T. Davinson, T.N. Ginter, C.J. Gross, R. Grzywacz, Z. Janas, M. Karny, B.D. MacDonald, J.F. Mas, J.W. McConnell, A. Piechaczek, R.C. Slinger, J. Szerypo, K.S. Toth, W.B. Walters, P.J. Woods, E.F. Zganjar, W. Nazarewicz, and P.B. Semmes, Acta Phys. Pol. B30 (1999) 565

 Nuclear Structure, W. Nazarewicz, Nucl. Phys. A654 (1999) 195c

Master of Science, PhD, and Habilitation Theses:

International cooperation:

The nuclear structure theory group collaborates very intensely with the theory groups at the Oak Ridge National Laboratory (USA), University of Knoxville (USA), University of Strasbourg (France), Stockholm University (Sweden), GANIL Laboratory (France), and many others. We participate on a regular basis in the activities of the European Centre for Theoretical Nuclear Physics in Trento (Italy) and of the Institute of Nuclear Theory in Seattle (USA).

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