Cellular mobile telecommunications and the World Wide Web are growing at an exciting pace. In the year 1999 both GSM and the Internet reached more than 200 million registered users globally. Thus, it may be expected that users will demand the combination of mobility and multimedia services in a foreseeable time frame. Multimedia content increases and differentiates with the changing information society, and an even richer variety of audio, visual, and text-based information will be required in the future. UMTS, the Universal Mobile Telecommunications System, a member of the IMT-2000 family of thirdgeneration systems, will provide these services. UMTS standardization has set a new paradigm of timely market-driven standardization in a global partnership of standardization bodies.

An isomeric state at 3,523 keV excitation energy in 97y with a half-life of 144(10) ms has been discovered with the fission-product separator JOSEF. This isomer is depopulated through a ? transition of 162 keV. An E3 multipolarity for this transition is consistent with the measured conversion coefficients of 0~K = 0.98 (20) and er = 1.00 (19). Subsequent electromagnetic transitions populate several new 97y levels which have high spins. For the isomer the three-quasiparticle configuration [gg9/2 @v(hl 1/2, g7/2)]27/2-is proposed. The E3 transition with a strength about 2 single-particle units is supposed to be of the type h+~2-*ds/~ . These findings provide evidence for the rapid shape transition 97 at A-~ 100 since they indicate shell-model character of 39Y58 even at high excitation energies while the immediate neighbour 998Y59 contains a rotational band based on a level at 495 keV.

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A quantitative determination of interface (Ks) and volume anisotropy (Ko) constants of MBE and sputtered Co/Pt multilayers is reported. Torque and VSM magnetometry were used to determine the total average anisotropy and the room temperature magnetization of four different series of films with varying Co thickness and nearly constant Pt thickness. All films were characterized with X-ray diffraction and X-ray fluorescence, allowing the determination of the "magnetic" volume with good accuracy. Both Ks and KWf are found to be orientation dependent. We find the following results for MBE films grown on Ag buffered GaAs substrates and highly < 111 > textured films, grown on etched SiNx buffers: (111)Ks =0.92mJ/m 2 , Kveff=-l.l IMJ/m 3 sputtered (110) Ks=0.42mJ/m 2 , Kveff=-l.95MJ/m 3 MBE (001)Ks=0.59mJ/m 2 , Kveff=-5.98MJ/m 3 MBE The [l10]-oriented MBE films show in addition a large (intrinsic) in-plane anisotropy constant K -'-3MJ/m 3 , which is found to be independent of the Co thickness.[100] is the easy and [1I0] the hard in-plane direction.

A level scheme has been established for 94Rb57 based on studies at the fission-product separator JOSEF of 7-7 coincidences following the/~-decay of 94Kr. For the 190.7 keV level a half-life of 2.5(8) ns has been determined through the centroid-shift method. The major /%decay branch of 94Kr proceeds with log ft=3.7 into the 988.4 keV state in 94Rb. This transition must be of the 0+~ 1 + GT type involving the transition vgT/2--~7Cgg/2. IBFFM calculations have been performed for 94Rb, starting from the parametrization used in the previous IBM investigations for the isotope 93Rb and the isotone 96y. A theoretical interpretation of the low-lying levels including propositions for the spins is given in a comparison to the available data.