Search results for "Periodic system"
showing 3 items of 3 documents
Stability and decay of nuclei at the end of the periodic system
1992
Abstract Recent studies of nuclear mass models show that it is essential to account for the Coulomb redistribution energy when calculating the nuclear potential energy in the heavy-element region. Results obtained by use of a mass model that includes Coulomb redistribution effects are analyzed. Q -values for α- and β-decay are calculated. Half-lives for α-decay are estimated by use of the Viola-Seaborg systematics. For EC, β + decay and β − decay, half-lives are calculated in a microsciopic QRPA model. Calculated single-particle level structures in the heavy-element region are presented. These indicate possible regions of isomers that would be unusually stable with respect to spontaneous fi…
Future hypernuclear physics at MAMI-C and PANDA-GSI
2005
Hypernuclei represent the first steps towards an extension of the periodic system into the sector of strangeness and thus add a third dimension to our evolving picture of nuclei. They provide a large variety of new and exciting perspectives ranging from new dynamical symmetries in hypernuclei spectra, non-mesonic weak decays, and the interplay of the quark-exchange and meson-exchange aspects of strong baryon–baryon forces in the flavor SU(3) world. Furthermore, double hypernuclei may provide a doorway towards exotic quark states. In the near future, electroproduction experiments at TJNAF and MAMI-C will add more detailed information on the structure of single hypernuclei states. On the long…
The Diagnosis of Disease by Element Analysis
1988
The elemental composition of the human body images in principle the elements of the periodic system. In the literature, about 80 elements are reported to occur in the human body and the number is expected to increase by the introduction of methods more sensitive in detection. The elemental composition in reference man as published (1) is summarized in tab. 1. From the major elements in reference man, the determination of the elements nitrogen, calcium, phosphorus, potassium, sodium, chlorine and magnesium are of importance for the diagnosis of diseases. The importance of the element determination for the diagnosis of diseases is also documented by the numbers of element determinations done …