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RESEARCH PRODUCT

Facilities and Methods: Heavy Element Spectroscopy at JYFL

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A central theme throughout the history of experimental nuclear physics has been the pursuit of nuclei at the extremes. These extremes, be they in terms of mass, proton-to-neutron ratio, or spin and excitation energy, provide the most stringent tests for our current nuclear structure theories. The pursuit of these extremes also provides impetus to develop and exploit new techniques and instrumentation. At the Department of Physics of the University of Jyvaskyla (JYFL), a major part of the experimental program is devoted to the study of heavy nuclei along the proton dripline and superheavy nuclei in the transfermium region. This program was initiated in the mid-1990s when a small array of TESSA-type germanium detectors known as DORIS (DOdecahedral aRray In Suomi) was coupled to the gas-filled recoil separator RITU [1]. Using the Recoil-Decay Tagging (RDT) technique [2], whereby the delayed charged particle radiation measured at the focal plane of the recoil separator is used to identify the gamma-rays of in...