Sven Kullander

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BACKGROUND Reliable taxonomy underpins communication in all of biology, not least nature conservation and sustainable use of ecosystem resources. The flexibility of taxonomic interpretations, however, presents a serious challenge for end-users of taxonomic concepts. Users need standardised and continuously harmonised taxonomic reference systems, as well as(More)
1 Abstract A detector setup for the cooler storage ring CELSIUS is described. The setup detects particles produced in interactions between the internal beam and a gas jet target. Particles emitted in the forward direction are measured by means of arrays of plastic scintillators and proportional counters. Particles, particularly photons, emitted more(More)
We gathered in the Leonardo Corporation building where the 10 kW apparatus for anomalous energy production by nickel and hydrogen was demonstrated during a press conference on 14 th of January. References [1] to [4] for the original papers describing the innovation are listed at the end. In the same building, two CHP facilities were located, based on(More)
  • H Cal En, J Dyring, G Ff Aldt, K Fransson, L Gustafsson, S Hh Aggstrr Om +32 others
  • 1999
Exclusive measurements of the production of-mesons in the pp ! ppp reaction have been carried out at excess energies of 16 and 37 MeV above threshold. The deviations from phase space are dominated by the proton-proton nal state interaction and this innuences particularly the energy distribution of the meson. However, evidence is also presented at the higher(More)
  • H Cal En, J Dyring, K Fransson, L Gustafsson, S Hh Aggstrr Om, B Hh +31 others
  • 2008
The rst measurement of the quasi-free p+n!p+n+ reaction cross section has been made at the CELSIUS storage ring using a deuterium internal cluster jet target. The energy dependence of the cross section is extracted using a xed incident proton energy of T p = 1350 MeV and exploiting the Fermi momentum of the struck neutron. The data cover a range of(More)
  • H Cal En, J Dyring, K Fransson, L Gustafsson, S Hh Aggstrr Om, B Hh +27 others
  • 2007
The quasi-free p+n!d+ reaction cross section has been measured in the near-threshold region using deuterium from an internal cluster-jet target and 1350 MeV protons in the CELSIUS storage ring. The energy dependence of the cross section is extracted by reconstructing the kinematics on an event-by-event basis and exploiting the Fermi momentum of the target(More)
The pp-->pp pi(+) pi(-) reaction has been measured exclusively near threshold at CELSIUS. The total cross sections are nearly an order of magnitude lower than expected from previous inclusive measurements. The differential cross sections reveal pp-->pp(*)(1440)-->pp sigma = pp(pi(+)pi(-))(I = l = 0) as the dominant process as well as significant(More)
  • L Del, Risco Norrlid, C Rönnqvist, K Fransson, R Brenner, L Gustafsson +2 others
  • 2001
The hybrid structure of solid-state pixel detector has a semiconductor sensor that converts the X-ray photons to electric pulses, and an electronics chip that processes and stores the signals. The signals are transferred from the sensor chip to the electronic chip through metallic bump bonds, one per pixel. Image quality parameters have to be assessed in(More)