Oak Ridge National Laboratory

Physics Division

Physics Division Seminars

Physics Division Seminars bring us speakers on a variety of physics related subjects. Usually these are held in the Building 6008 large Conference Room, at 3:00 pm on the chosen day, but times and locations may vary. For more information, contact our seminar chairman,

Alfredo Galindo-Uribarri
Tel (Office): (865) 574-6124  (FAX): (865) 574-1268

If you should wish to subscribe to Email announcements of the Physics Division Seminars, please send email to "seminar-owner AT orph02 DOT phy DOT ornl DOT gov". In your message, please include your name and postal address, as well as your public email address.

Interesting seminars on related topics are available at the University of Tennessee Physics Department Colloquium Series.

Thu., April 24, 2014 at 3:00 p.m. - 4:00 p.m. (refreshments at 2:40 p.m.)

Mean-Field Dynamics for Giant Resonances and Fusion Reactions

Paul D. Stevenson, University of Surrey, United Kingdom
ORNL, Bldg. 6008 Large Conference Room

The energy density functional view of nuclei provides a good description of ground state properites and is linked to the underlying nuclear interactions via the Hartree-Fock (HF) approximation. The extension of HF to dynamical processes via the time-depdendent HF approach allows description of collective nuclear behaviour, including giant resonances and collisions.

We present a survey of some recent results with time-dependent approaches; Various properties of giant-resnonace-like modes are explored, including low-lying dipole strength in Se-76 [1], in which a non-multipole excitation is used to pick out "pygmy" strength; Some technical advances leading to a true continuum theory [2]; Results in giant resonances and fusion from exploring tensor terms in the nuclear interaction [3,4].

Some details of a newly-published code allowing such calculations to be performed will also be presented [5].

[1] P. M. Goddard et al., Phys. Rev. C 88, 064308 (2013).
[2] C. I. Pardi and P. D. Stevenson, Phys. Rev. C. 87, 014330 (2013).
[3] S. Fracasso, P. D. Stevenson and E. B. Suckling, Phys. Rev. C 86, 044303 (2012).
[4] P. D. Stevenson, Sara Fracasso and E. B. Suckling, J. Phys. Conf. Ser. 381, 012105 (2012).
[5] J. A. Maruhn, P.-G. Reinhard, P. D. Stevenson and A. S. Umar, accepted for publication in Computer Physics Communications, arXiv:1310.5946.

Contact: Alfredo Galindo-Uribarri, (865) 574-6124

Thu., May 01, 2014 at 3:00 pm - 4:00 pm (refreshments served at 2:40 pm)

Nuclear Incompressibility, the Asymmetry Term, and the MEM Effect

Umesh Garg, Department of Physics, University of Notre Dame, Indiana
ORNL, Bldg 6008 Large Conference Room

Previous seminars