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Division of Nuclear Structure Theory


Permanent staff:

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


Students:

Mariusz Debowski (MSc)
Andrzej Godlewski (MSc)
Jolanta Karny (MSc)
Rainald Kirchner (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 and Dr. Piotr Magierski) and with Dr. Weronika P\lóciennik of the So\ltan Institute of Nuclear Studies. We constitute a team of people who work 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 1996 and 1997, seven members of the nuclear structure theory group have published 50 papers in refereed periodicals (see the list below), and have presented 37 invited talks and 13 contributions at international conferences. During this period of time we have realized the following main research projects:




Papers published in refereed periodicals in 1996 and 1997


1.
 Neutron Radii and Skins in the Hartree-Fock-Bogoliubov Calculations, J. Dobaczewski, W. Nazarewicz, T.R. Werner, Z. Phys. 354 (1996) 27.

2.
 Structure of proton drip-line nuclei around doubly-magic 48Ni, W. Nazarewicz, J. Dobaczewski, T.R. Werner, J.A. Maruhn, P.-G. Reinhard, K. Rutz, C.R. Chinn, A.S. Umar, M.R. Strayer, Phys. Rev. 53 (1996) 740.

3.
 Time-odd components in the rotating mean field and identical bands, J. Dobaczewski, J. Dudek, Acta Phys. Pol. 27 (1996) 45.

4.
 Proton localization in the neutron star matter, K. Burzynski, J. Dobaczewski, Acta Phys. Pol. 27 (1996) 563.

5.
 Quadrupole pairing versus $\delta$-interaction. Comparative study, W. Satu\la, R. Wyss, Acta Phys. Pol. 27 (1996) 121.

6.
 Antiprotonic studies of nuclear neutron haloes, S. Wycech, J. Skalski, R. Smolanczuk, J. Dobaczewski, J.R. Rook, Phys. Rev. 54 (1996) 1832.

7.
 Mean-field description of ground-state properties of drip-line nuclei: Pairing and continuum effects, J. Dobaczewski, W. Nazarewicz, T.R. Werner, J.F. Berger, C.R. Chinn, J. Dechargé, Phys. Rev. 53 (1996) 2809.

8.
 Ground State Properties of Exotic Si, S, Ar, and Ca Isotopes, T.R. Werner, J. A. Sheikh, M. Misu, W. Nazarewicz, J. Rikovska, K. Heeger, A. S. Umar, M. R. Strayer, Nucl. Phys. 597 (1996) 327.

9.
 Identical rotational bands in the A$\sim$130 superdeformed region analysed in terms of the pseudospin symmetry, Z. Szymanski, Acta Phys. Pol. 27 (1996) 1001.

10.
 Perspectives in High Spin Physics (Theoretical Remarks), W. Nazarewicz, Acta Phys. Pol. 27 (1996) 21.

11.
 Shell-model picture of the virtual detour transitions in the 41Ca radiative electron capture decay, J.L. Zylicz, M. Pfützner, S.G. Rohozinski, B.A. Brown, Phys. Rev. 53 (1996) 1593.

12.
 Band structure of the odd-even 125,127La nuclei, K. Starosta, Ch. Droste, T. Morek, J. Srebrny, W. Satu\la, S.G. Rohozinski, R. Wyss, I.M. Hibbert, R. Wadsworth, K. Hauschild, C.W. Beausang, S.A. Forbes, P.J. Nolan, E.S. Paul, Phys. Rev. 53 (1996) 137.

13.
 Additivity of quadrupole moments in superdeformed bands: Single-particle motion at extreme conditions, W. Satu\la, J. Dobaczewski, J. Dudek, W. Nazarewicz, Phys. Rev. Lett. 77 (1996) 5182.

14.
 Boson-fermion Dyson mapping and supersymmetry in fermion systems, P. Navrátil, H.B. Geyer, J. Dobaczewski, Nucl. Phys. 607 (1996) 23.

15.
 The observation of superdeformed structure in mass 80 nuclei, P.J. Dagnall, A.G. Smith, J.C. Lisle, D.H. Smalley, R. Chapman, C. Finck, B. Haas, M. Leddy, D. Prévost, N. Rowley, H. Savajols, T.R. Werner, W. Nazarewicz, Acta Phys. Pol. 27 (1996) 155.

16.
 New spontaneous fission mode for 252Cf: indication of hyperdeformed 144,145,146Ba at scission, G.M. Ter-Akopian, J.H. Hamilton, Yu.Ts. Oganessian, A.V. Daniel, J. Kormicki, A.V. Ramayya, G.S. Popenko, B.R.S. Babu, Q.-H. Lu, K. Butler-Moore, W.-C. Ma, S. Cwiok, W. Nazarewicz, J.K. Deng, D. Shi, J. Kliman, M. Morhac, J.D. Cole, R. Aryaeinejad, N.R. Johnson, I.Y. Lee, F.K. McGowan, J.X. Saladin, Phys. Rev. Lett. 77 (1996) 32.

17.
 On the quality of microscopic descriptions of nuclear mass, Z. Patyk, A. Baran, J.F. Berger, J. Dechargé, J. Dobaczewski, R. Smolanczuk, A. Sobiczewski, Acta Phys. Pol. 27 (1996) 457.

18.
 PDCO: Polarizational-Directional Correlation from Oriented Nuclei, Ch. Droste, S.G. Rohozinski, K. Starosta, T. Morek, J. Srebrny, P. Magierski, Nucl. Instruments and Methods 378 (1996) 518.

19.
 Calculation of decay properties of very neutron-rich nuclei with a modified Nilsson potential, B. Pfeiffer, K.-L. Kratz, J. Dobaczewski, P. Möller, Acta Phys. Pol. 27 (1996) 475.

20.
 Polarizational-Directional Correlation from Oriented Nuclei, S.G. Rohozinski, K. Starosta, Ch. Droste, T. Morek, J. Srebrny, P. Magierski, Acta Phys. Pol. 27 (1996) 499.

21.
 Collective high spin states in the light odd f7/2 nuclei, P. Bednarczyk, R. Broda, M. Lach, W. Meczynski, J. Styczen, D. Bazzacco, F. Brandolini, G. de Angelis, S. Lunardi, L. Müller, N. Medina, C. Petrache, C. Rossi-Alvarez, F. Scarlassara, C.F. Segato, C. Signorini, F. Soramel, W. Nazarewicz, E. Ormand, Acta Phys. Pol. 27 (1996) 145.

22.
 The Lipkin-Nogami Pairing Scheme in Self-Consistent Nuclear Structure Calculations, P.-G. Reinhard, W. Nazarewicz, M. Bender, J.A. Maruhn, Phys. Rev. 53 (1996) 2776.

23.
 Nuclear Deformations, W. Nazarewicz, I. Ragnarsson, w Handbook of Nuclear Properties, red. D.N. Poenaru i W. Greiner, Clarendon Press, Oxford, 1996, p. 80.

24.
 Single particle states in 149Dy at high spin, M. Gupta, Pragya Das, S.B. Patel, R.K. Bhowmik, T.R. Werner, Y.A. Akovali, Phys. Rev. 54 (1996) 1610.

25.
 Superdeformed structures in 197,198Pb, I.M. Hibbert, R. Wadsworth, K. Hauschild, H. Hubel, W. Korten, U.J. van Severen, E.S. Paul, A.N. Wilson, J.N. Wilson, A.P. Byrne, W. Satu\la, R. Wyss, Phys. Rev. 54 (1996) 2253.

26.
 Intrinsic reflection asymmetry in atomic nuclei, P. Butler, W. Nazarewicz, Rev. Mod. Phys. 68 (1996) 349.

27.
 Comment on Shape and superdeformed structure in Hg isotopes in relativistic mean field model and Structure of neutron-deficient Pt, Hg, and Pb isotopes, K. Heyde, P.Van Duppen, M. Huyse, J.L. Wood, W. Nazarewicz, Phys. Rev. 53 (1996) 1035.

28.
 Rotational inertia of superdeformed nuclei: Intruder orbitals, pairing, and identical bands, G. de France, C. Baktash, B. Haas, W. Nazarewicz, Phys. Rev. 53 (1996) R1070.

29.
 Physics with radioactive beams, W. Nazarewicz, B. Sherril, I. Tanihata, P. Van Duppen, Nucl. Phys. News 6 (1996) 17.

30.
 Drip-line nuclei in self-consistent mean-field theory, T.R. Werner, J. Dobaczewski, W. Nazarewicz, Z. Phys. 358 (1997) 169.

31.
 Shell structure of the superheavy elements, S. Cwiok, J. Dobaczewski, P.-H. Heenen, P. Magierski, W. Nazarewicz, Nucl. Phys. 611 (1997) 211.

32.
 Quadrupole and Hexadecapole Correlations in Rotating Nuclei Studied within the Single-j Shell Model, P. Magierski, K. Burzynski, E. Perlinska, J. Dobaczewski, W. Nazarewicz, Phys. Rev. 55 (1997) 1236.

33.
 Solution of the Skyrme-Hartree-Fock equations in the Cartesian deformed harmonic oscillator basis. (I) The method, J. Dobaczewski, J. Dudek, Comput. Phys. Comm. 102 (1997) 166.

34.
 Solution of the Skyrme-Hartree-Fock equations in the Cartesian deformed harmonic oscillator basis. (II) The program HFODD, J. Dobaczewski, J. Dudek, Comput. Phys. Comm. 102 (1997) 183.

35.
 Competition between T=0 and T=1 pairing in proton-rich nuclei, W. Satu\la, R. Wyss, Phys. Lett. 393 (1997) 1.

36.
 Coexistence of collective and non-collective structures in the odd-A f7/2 nuclei, P. Bednarczyk, J. Styczen, R. Broda, M. Lach, W. Meczynski, W. Nazarewicz, E. Ormand, W. Satu\la, D. Bazzacco, F. Brandolini, G. de Angelis, S. Lunardi, L. Müller, N. Medina, C. Petrache, C. Rossi-Alvarez, F. Scarlassara, C.F. Segato, C. Signorini, F. Soramel, Phys. Lett. 393 (1997) 285.

37.
 The octupole susceptibility of superheavy nuclei, S. Cwiok, J. Dobaczewski, P.-H. Heenen, P. Magierski, W. Nazarewicz, Prog. Part. and Nucl. Phys. 38 (1997) 97.

38.
 Parametrization of nonaxial deformations in rotational nuclei, S.G. Rohozinski, Phys. Rev. 56 (1997) 165.

39.
 Systematics of Energy Signature Splitting for $\pi h_{9/2}[541\;1/2^{-}]$ Rotational Bands in odd-Z Rare-Earth Nuclei, H.J. Jensen, W.F. Mueller, W. Nazarewicz, W. Reviol, L.L. Riedinger, J.-Y. Zhang, Acta Phys. Pol. 28 (1997) 169.

40.
 Equilibrium Shapes and High-Spin Properties of the Neutron-Rich A$\approx$100 Nuclei, J. Skalski, S. Mizutori, W. Nazarewicz, Nucl. Phys. 617 (1997) 282.

41.
 Physics of Radioactive Nuclear Beams: Theoretical Perspective, W. Nazarewicz, Heavy Ion Phys. 6 (115) 1997.

42.
 On the origin of the Wigner energy, W. Satu\la, D. Dean, J. Gary, S. Mizutori, W. Nazarewicz, Phys. Lett. 407 (1997) 103.

43.
 Systematics of even-even Tz=1 nuclei in the A=80 region: High-spin rotational bands in 74Kr,78Sr and 82Zr, D. Rudolph, C. Baktash, C.J. Gross, W. Satu\la, R. Wyss, I. Birrel, M. Devlin, H.-Q. Jin, D.R. LaFosse, F. Lerma, J.X. Saladin, D.G. Sarantites, G.N. Sylvan, S.L. Tabor, D.F. Winchell, V.Q. Wood, C.H. Yu, Phys. Rev. 56 (1997) 98.

44.
 Lifetimes in 125,127La measured by the Recoil Distance Method, K. Starosta, Ch. Droste, T. Morek, J. Srebrny, D.B. Fossan, S. Gundel, J.M. Sears, I. Thorslund, P. Vaska, M.P. Waring, S.G. Rohozinski, W. Satu\la, U. Garg, C. Naguleswaran, J.C. Walpe, Phys. Rev. 55 (1997) 2794.

45.
 Uncertainties in direct neutron capture calculations due to nuclear structure models, T. Rauscher, K.-L. Kratz, H. Oberhummer, J. Dobaczewski, P. Möller, M. Sharma, Nucl. Phys. 621 (1997) 327c.

46.
 Deformed nuclear halos, T. Misu, W. Nazarewicz, S. Åberg, Nucl. Phys. 614 (1997) 44.

47.
 Identification of excited states in the Tz=+1/2 nucleus 75Rb: the quest for experimental signatures of collective neutron-proton correlations, C.J. Gross, D. Rudolph, W. Satu\la, J. Alexander, C. Baktash, P.J. Coleman-Smith, D.M. Cullen, R.A. Cunningham, J.D. Garrett, W. Gelletly, A. Harder, M.K. Kobadiyski, I. Lazarus, K.P. Lieb, H.A. Roth, D.G. Sarantites, J.A. Sheikh, J. Simpson, O. Skeppstedt, B.J. Varley, D.D. Warner, Phys. Rev. 56 (1997) R591.

48.
 Spherical Proton Emitters, S. Åberg, P.B. Semmes, W. Nazarewicz, Phys. Rev. 56 (1997) 1762.

49.
 Alpha decay and shape coexistence in the alpha-rotor model, J.D. Richards, T. Berggren, C.R. Bingham, W. Nazarewicz, J. Wauters, Phys. Rev. 56 (1997) 1389.

50.
 New Cold and Ultra Hot Binary and Cold Ternary Spontaneous Fission Modes for 252Cf and New Band Structures with Gammasphere, J.H. Hamilton, A.V. Ramayya, J.K. Hwang, J. Kormicki, B.R.S. Babu, A. Sandulescu, A. Florescu, W. Greiner, G.M. Ter-Akopian, Yu. Ts. Oganessian, A.V. Daniel, S.J. Zhu, M.G. Wang, T. Ginter, J.K. Deng, W.C. Ma, G.S. Popeko, Q.H. Lu, E. Jones, R. Dodder, P. Gore, W. Nazarewicz, J.O. Rasmussen, A. Asztalos, I.Y. Lee, S.Y. Chu, K.E. Gregorich, A.O. Macchiavelli, M.F. Mohar, S. Prussin, A.A. Stoyer, R.W. Lougheed, K.J. Moody, J.F. Wild, L.A. Bernstein, J.A. Becker, J.D. Cole, R. Aryaeinejad, Y.X. Dardenne, M.W. Drigert, K. Butler-Moore, R. Donangelo, H.C. Griffin, Prog. Part. and Nucl. Phys. 38 (1997) 273.

Master of Science, Doctor and the habilitation:

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), Prague University (Czech Republic), 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).

Other activities:

In 1996 and 1997, members of our group have been participating in various working groups and research panels aiming at defining the best research directions in nuclear science for the coming ten-fifteen years. In particular, we have been very active in preparing the 1996 Long Range Plan for Nuclear Science in the USA, the Long Range Plan for the GSI Laboratory (Germany), the Report of the NUPECC Working Groups for planning future developments in Europe, the Report of the Nuclear Physics Commission of the American Science Academy, as well as the White Paper for the next generation NISOL facility in the USA.



 
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Jacek Dobaczewski
1999-03-11