Torben Lauritsen

• phone: (630)252-4026
• FAX: (630)252-6210
• e-mail: [email protected]

Research interests

High spin spectroscopy with emphasis on the study of superdeformed and hyperdeformed nuclei. Determination of spins and excitation energies of superdeformed bands by analysis of the quasi-continuum of gamma rays. Study of nuclei at very high spins and finite temperaure using 2D gamma-gamma spectroscopy (ridge spectroscopy) using GammaSphere coupled to the FMA mass spectrometer. Monte carlo model calculations of the feeding of normal and superdeformed bands as well as the decay of superdeformed bands.

Biographical sketch

• 1981-1984 Research Assistant, University of Aarhus, Denmark
• 1982 Research Trainee, Philips Research Lab., Einthoven, The Netherlands
• 1984-1990 Research Assistant, State University of New York, Stony Brook, NY
• 1990-1992 Postdoctoral appointee, Argonne National Laboratory, IL
• 1992-1994 Staff Term--Appointment, Argonne National Laboratory, IL
• 1994-1998 Assistant Scientist, Argonne National Laboratory, IL
• 1998-present Physicist, Argonne National Laboratory, IL

Selected Publications

• Characterization of a Gamma-Ray Tracking Array: A Comparison of GRETINA and Gammasphere Using a ⁶⁰Co Source.
  T. Lauritsen, A. Korichi, S. Zhu, A. N. Wilson, D. Weisshaar, J. Dudouet, A. D. Ayangeakaa, M. P. Carpenter, C. M. Campbell, E. Clément, H. L. Crawford, M. Cromaz, P. Fallon, J. P. Greene, R. V. F. Janssens, T. L. Khoo, N. Lalović, I. Y. Lee, A. O. Macchiavelli, R. M. Perez-Vidal, S. Pietri, D. C. Radford, D. Ralet, L. A. Riley, D. Seweryniak, and O. Stezowski
  Nucl. Instrum. Methods A836, 46-56 (2016)
  
  
• Population and Decay of Superdeformed Nuclei Probed by Discrete and Quasi-Continuum gamma-ray Spectroscopy.
  A. Lopez-Martens, T. Lauritsen, S. Leoni, T. Døssing, T. L. Khoo, and S. Siem
  Prog. Part. Nucl. Phys. 89, 137-186 (2016)
  
  
• Rotational damping, ridges, and the quasicontinuum of gamma rays in ¹⁵²Dy.
  T. Lauritsen, R. V. F. Janssens, T. L. Khoo, I. Ahmad, M. P. Carpenter, F. G. Kondev, C. J. Lister, E. F. Moore, D. Seweryniak, S. Zhu, T. Døssing, B. Herskind, A. Korichi, A. Lopez-Martens, R. M. Clark, P. Fallon, G. Lane, A. O. Macchiavelli, D. Ward, A. M. Heinz, D. G. Jenkins, A. J. Larabee, B. Meredith, J. Kozemczak, and P. Chowdhury
  Phys. Rev. C 75, 064309 (2007)
  
  
• OCTUPOLE VIBRATION IN SUPERDEFORMED 152DY
  T. Lauritsen, R.V.F. Janssens, M.P. Carpenter, P. Fallon, B. Herskind, D.G. Jenkins, T.L. Khoo, F.G. Kondev, A. Lopez--Martens, A.O. Macchiavelli, D. Ward, K. Abu Saleem, I. Ahmad, R.M. Clark, M. Cromaz, T. Dossing, F. Hannachi, A.M. Heinz, A. Korichi, G. Lane, C.J. Lister, D. Seweryniak Phys. Rev. Lett.,  89, 282501 (2002)
  
  
• DIRECT DECAY--OUT FROM THE SUPERDEFORMED BAND TO THE YRAST LINE IN 152DY.
T. Lauritsen, M.P. Carpenter, T. Dossing, P. Fallon, B. Herskind, R.V.F. Janssens, D.G. Jenkins, T.L. Khoo, F.G. Kondev, A. Lopez-Martens, A.O. Macchiavelli, D. Ward, K.S. Abu Saleem, I. Ahmad, R. Clark, M. Cromaz, J.P. Greene, F. Hannachi, A.M. Heinz, A. Korichi, G. Lane, C.J. Lister, P. Reiter, D. Seweryniak, S. Siem, R.C. Vondrasek, and I. Wiedenhover. Phys. Rev. Lett. 88, 042501 (2002)


• EXPERIMENTAL DETERMINATION OF THE EXCITATION ENERGY OF SUPERDEFORMED BANDS IN 192,194HG BY ANALYSIS OF THE DECAY QUASICONTINUUM GAMMA RAYS.
T. Lauritsen, T. L. Khoo, I. Ahmad, M. P. Carpenter, R. V. F. Janssens, A. Korichi, A. Lopez-Martens, H. Amro, S. Berger, L. Calderin, T. Dossing, S. M. Fischer, G. Hackman, F. Hannachi, C. J. Lister, E. F. Moore, D. T. Nisius, C. Schuck, and S. Siem. Phys. Rev. C 62, 044316 (2000)


• ENTRY DISTRIBUTION, FISSION BARRIER AND FORMATION MECHANISM OF 254No.
P. Reiter, T. L. Khoo, T. Lauritsen, C. J. Lister, D. Seweryniak, A. A. Sonzogni, I. Ahmad, N. Amzal, P. Bhattacharyya, P. A. Butler, M. P. Carpenter, A. J. Chewter, J. Cizewski, C. N. Davids, K. Y. Ding, N. Fotiades, J. P. Greene, P. T. Greenless, A. Heinz, W. F. Henning, R.-D. Herzberg, R. V. F. Janssens, G. D. Jones, H. Kankaanpaa, F. G. Kondev, W. Korten, M. Leino, S. Siem, J. Uusitalo, K. Vetter, and I. Wiedenhover. Phys. Rev. Lett. 84, 3542 (2000)


• THE DECAY-OUT OF SUPERDEFORMED BANDS IN THE A = 190 REGION: WHAT HAVE WE LEARNED?
T.Lauritsen, G.Hackman, T.L.Khoo, M.P.Carpenter, R.V.F.Janssens, A.Lopez-Martens, D.Ackermann, I.Ahmad, H.Amro, D.J.Blumenthal, S.M.Fischer, D.T.Nisius, F.Hannachi, A.Korichi, E.F.Moore. Acta Phys.Hung.N.S. 6, 229 (1997)


• SPINS, PARITY, EXCITATION ENERGIES AND OCTUPOLE STRUCTURE OF AN EXCITED SUPERDEFORMED BAND IN 194Hg AND THE IMPLICATIONS FOR IDENTICAL BANDS.
G. Hackman, T. L. Khoo, M. P. Carpenter, T. Lauritsen, A. Lopez-Martens, I. J. Calderin, R. V. F. Janssens, D. Ackermann, I. Ahmad, S. Agarwala, D. J. Blumenthal, S. M. Fischer, D. Nisius, P. Reiter, J. Young, H. Amro, E. F. Moore, F. Hannachi, I. Y. Lee, A. O. Macchiavelli, T. Dossing, and T. Nakatsukasa. Phys. Rev. Lett., 79, 4100 (1997)


• OBSERVATION OF THE SINGLE STEP LINKS OF THE YRAST SUPERDEFORMED BAND IN 194Pb.
F.Hannachi, A.Lopez-Martens, A.Korichi, C.Schuck, E.Gueorguieva, C.Vieu, B.Haas, R.Lucas, A.Astier, G.Baldsiefen, M.Carpenter, G.de France, R.Duffait, L.Ducroux, Y.Le Coz, Ch.Finck, A.Gorgen, H.Hubel, T.L.Khoo, T.Lauritsen, M.Meyer, D.Prevost, N.Redon, C.Rigollet, H.Savajols, J.F.Sharpey-Schafer, O.Stezowski, C.Theisen, U.Van Severen, J.P.Vivien, A.N.Wilson. Z.Phys. A358, 183 (1997)


• EXCITATION ENERGIES AND SPINS OF A SUPERDEFORMED BAND IN 194Hg FROM ONE- STEP DISCRETE DECAYS TO THE YRAST LINE.
T. L. Khoo, M. P. Carpenter, T. Lauritsen, D. Ackermann, I. Ahmad, D. J. Blumenthal, S. M. Fisher, R. V. F. Janssens, D. Nisius, E. F. Moore, A. Lopez-Martens, T. Dossing, R. Kruecken, S. Asztalos, J. A. Becker, L. Bernstein, R. M. Clark, M. A. Deleplanque, R. M. Diamond, P. Fallon, L. P. Farris, F. Hannachi, E. A. Henry, A. Korichi, I. Y. Lee, A. O. Macchiavelli, and F. S. Stephens. Phys. Rev. Lett. 76, 1583 (1996)


• QUASIPARTICLE EXCITATIONS IN SUPERDEFORMED 192Hg.
P. Fallon, T. Lauritsen, I. Ahmad, M. P. Carpenter, B. Cederwall, R. M. Clark, B. Crowell, M. A. Deleplanque, R. M. Diamond, B. Gall, F. Hannachi, R. G. Henry, R. V. F. Janssens, T. L. Khoo, A. Korichi, I. Y. Lee, A. O. Macchiavelli, C. Schuck, and F. S. Stephens. Phys. Rev. C 51, R1609 (1995)


• EFFECTS OF PAIR CORRELATIONS IN STATISTICAL g-DECAY SPECTRA.
T. D/ssing, T. L. Khoo, T. Lauritsen, I. Ahmad, D. Blumenthal, M. P. Carpenter, B. Crowell, D. Gassmann, R. G. Henry, R. V. F. Janssens and D. Nisius. Phys. Rev. Lett. 75, 1276 (1995)


• SPECTRUM OF g RAYS CONNECTING SUPERDEFORMED AND NORMAL STATES IN 192Hg.
R. G. Henry, T. Lauritsen, T. L. Khoo, I. Ahmad, M. P. Carpenter, B. Crowell, T. D/ssing, R. V. F. Janssens, F. Hannachi, A. Korichi, C. Schück, F. Azaiez, C. W. Beausang, R. Beraud, C. Bourgeois, R. M. Clark, I. Deloncle, J. Duprat, B. Gall, H. Hübel, M. J. Joyce, M. Kaci, Y. Le Coz, M. Meyer, E. S. Paul, N. Perrin, N. Poffe, M. G. Porquet, N. Redon, H. Sergolle, J. F. Sharpey-Schafer, J. Simpson, A. G. Smith, R. Wadsworth and P. Willsau. Phys. Rev. Lett. 73, 777 (1994)


• DYNAMIC MOMENT OF INERTIA OF THE 192HG SUPERDEFORMED BAND AT HIGH ROTATIONAL FREQUENCIES.
T.Lauritsen, R.V.F.Janssens, M.P.Carpenter, E.F.Moore, I.Ahmad, P.B.Fernandez, T.L.Khoo, J.A.Kuehner, D.Prevost, J.C.Waddington, U.Garg, W.Reviol, D.Ye, M.W.Drigert. Phys.Lett. 279B, 239 (1992)


• FEEDING OF SUPERDEFORMED BANDS: THE MECHANISM AND CONSTRAINTS ON BAND ENERGIES AND THE WELL DEPTH.
T.Lauritsen, Ph.Benet, T.L.Khoo, K.B.Beard, I.Ahmad, M.P.Carpenter, P.J.Daly, M.W.Drigert, U.Garg, P.B.Fernandez, R.V.F.Janssens, E.F.Moore, F.L.H.Wolfs, D.Ye. Phys.Rev.Lett. 69, 2479 (1992)


• ISOTOPE SHIFT MEASUREMENTS AND CHARGE RADII OF 152-158YB.
G.D.Sprouse, J.Das, T.Lauritsen, J.Schecker, A.Berger, J.Billowes, C.H.Holbrow, W.Kim, F.Xu. Hyperfine Interactions 59, 91 (1990)


• LASER SPECTROSCOPY OF LIGHT YB ISOTOPES ON-LINE IN A COOLED GAS CELL.
G.D.Sprouse, J.Das, T.Lauritsen, J.Schecker, A.Berger, J.Billowes, C.H.Holbrow, H.-E.Mahnke, S.L.Rolston. Phys.Rev.Lett. 63, 1463 (1989)


• THE ELECTRIC QUADRUPOLE HYPERFINE INTERACTION AT SITES OF ION-IMPLANTED FLUORINE IN AMORPHOUS AND CRYSTALLINE SILICON.
K.B.Nielsen, H.K.Schou, T.Lauritsen, G.Weyer, I.Stensgaard, J.W.Petersen, S.Damgaard. J.Phys.(London) C17, 3519 (1984)