Moritz Gunther

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For high temperature interconnection sintered silver can be used, however, it induces new demands on the thermo-mechanical design. That issue requires knowledge on the thermo-mechanical reliability of silver sintered devices, the subject of this paper. Material characteristics of the sinter layers are needed for simulation, which are addressed in the first(More)
The Low Temperature Joining Technology (LTJT) creates silver joints by a sintering process. It is an alternative die-attach technology to soldering. To initiate the sintering process the temperature has to be raised above ~ 215°C. The quality of a sintered joint is strongly enhanced by applying pressure to the specimen during the process, thus(More)
New demands on the thermo-mechanical design of sintered silver interconnections emerge. Development of this inter-connection technology and both experimental and theoretical studies on their reliability were subjects of the project “PROPOWER”. The focus of this paper is on theoretical analysis of thermo-mechanical reliability risks of a(More)
We present an IR-monitoring survey with the Spitzer Space Telescope of the star-forming region GGD 12-15. More than 1000 objects were monitored, including about 350 objects within the central 5′, which is found to be especially dense in cluster members. The monitoring took place over 38 days and is part of the Young Stellar Object VARiability project. The(More)
A search for unstable heavy fermions with the DELPHI detector at LEP is reported. Sequential and non-canonical leptons, as well as excited leptons and quarks, are considered. The data analysed correspond to an integrated luminosity of about 48 pb 1 at an ee centre-of-mass energy of 183 GeV and about 20 pb 1 equally shared between the centre-of-mass energies(More)
An update of the searches for charginos and neutralinos in DELPHI is presented, based mainly on recent data collected at centre-of-mass energies of 161 GeV and 172 GeV. No signal is found. For a sneutrino with mass above 300 GeV/c and a mass di erence between the chargino and the lightest neutralino above 10 GeV/c, the lower limit at 95% con dence level on(More)
  • iiP . Abreu, Wahib Adam, +464 authors A . Tilquin
  • 2007
The transverse, longitudinal and asymmetric components of the fragmentation function are measured from the inclusive charged particles produced in e + e ? collisions at LEP. As in deep inelastic scattering, these data are important for tests of QCD. The transverse T and longitudinal L components of the total hadronic cross section tot are evaluated from the(More)
The spin density matrix elements for the 0 , K 0 (892) and produced in hadronic Z 0 decays are measured in the DELPHI detector. There is no evidence for spin alignment of the K 0 (892) and in the region x p 0:3 (x p = p=p beam), where 00 = 0:330:05 and 00 = 0:300:04, respectively. In the fragmentation region, x p 0:4, there is some indication for spin(More)
Promptly decaying lightest neutralinos and long-lived staus are searched for in the context of light gravitino scenarios. It is assumed that the stau is the next to lightest supersymmetric particle (NLSP) and that the lightest neutralino is the next to NLSP (NNLSP). Data collected with the Delphi detector at centre-of-mass energies from 161 to 183 GeV are(More)