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 26, 2010, at 3:00 p.m. (refreshments at 2:40 p.m.)

The GSI Superheavy Element Program

Christoph E Duellmann, Johannes Gutenberg University Mainz, Mainz, Germany
Building 6008 Conference Room

Superheavy element research is a pillar of the research program at the GSI Helmholtz Center for Heavy Ion Research. At GSI, a world-unique combination of experimental facilities is installed that allows addressing key questions in this research field. The studied topics are as varied as
synthesis of the heaviest elements
reaction studies
nuclear structure investigations
chemical properties of the transactinide elements (Z >= 104)
direct mass measurements beyond fermium.
Recently, the reaction 244Pu(48Ca,3-4n)288,289114 was studied at the gas-filled separator TASCA. The high efficiency of this new separator allowed obtaining high-statistics data, which confirm results from the Dubna Gas-Filled Recoil Separator collaboration. High cross sections of the order of 10 pb were measured at TASCA. These open up exciting possibilities for in-depth nuclear and atomic physics studies as well as experiments on the chemical properties of elements around Z=114. The performance of TASCA as demonstrated establishes this facility at the forefront of current superheavy element research, ready to address burning questions such as the direct identification of the atomic number of the elements reported from Dubna during the past decade or to search for new elements beyond Z=118.

In my talk I will give an overview of superheavy element research at GSI with an emphasis on the program with transuranium targets at TASCA.

host: Krzysztof Rykaczewski, rykaczewskik@ornl.gov