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

Thu., August 11, 2016, at 3:00 PM - 4:00 PM (refreshments served at 2:40 PM)

Wheeler's Inventive Mind and Toroidal Nuclei

Cheuk-­‐Yin Wong, Physics Division, Oak Ridge National Laboratory
Bldg. 6008 Large Conference Room

John A. Wheeler's inventive mind covered vast areas, from single-electron universe, wormholes, blackholes, it-from-bit, superheavy nuclei, toroidal nuclei, and many others.  We will review some of Wheeler's notable ideas and their influence on those who were associated with him.  We will then focus on toroidal nuclei for which Wheeler suggested that under appropriate conditions a nucleus may assume a toroidal shape.  Favorable conditions for a toroidal nucleus may be the presence of an excessive charge, the nuclear shell effect, and/or a large angular momentum.  We shall present a review of recent Skyrme-Hartree-Fock findings [1-5] and explore ways how Wheeler's toroidal nuclei may be produced.

[1] A. Staszczak and C.Y. Wong, {Torpidly Super-Heavy Nuclei in Skyrme-Hartree- Fock Approach}, Acta Phys. Polon. B40, 753 (2009).

[2] A. Staszczak and C.Y. Wong, {A region of high-spin toroidal isomers}, Physics Letters B738, 401 (2014).

[3] A. Staszczak and C.Y. Wong, {Toroidal high-spin isomers in light nuclei with N not equal to Z}, Phys. Scrip. 90, 114006 (2015).

[4] A. Staszczak and C.Y. Wong, {Particle-hole nature of the light high-spin toroidal isomers}, Acta Phys. Pol. B46, 675 (2015).

[5] A. Staszczak and C.Y. Wong, {Theoretical studies of possible toroidal high-spin isomers in the light-mass region}, Euro. Phys. J. Web Conf. 117, 04008 (2016).

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