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