Alexandra Kugler

Learn More
High-linear energy transfer (LET) ion irradiation of cell nuclei induces complex and severe DNA lesions, and foci of repair proteins are formed densely along the ion trajectory. To efficiently discriminate the densely distributed/overlapping foci along the ion trajectory, a focus recognition algorithm called FociPicker3D based on a local fraction(More)
L'instabilité C1-C2 est le plus souvent traitée chirurgicalement. Selon l'indication, peuvent être proposées soit une ostéosynthèse par vissage direct de l'odontoïde, soit une arthrodèse C1-C2. Dans cette étude expérimentale in vitro, on a comparé au plan biomécanique, les trois différentes techniques d'arthrodèse atlanto-axoïdiennes, selon Gallie, Brooks(More)
Neutral pion transverse momentum spectra were measured in p+C and p+Pb collisions at sqrt[S{NN}]=17.4 GeV at midrapidity (2.3 less than or approximately equal eta{lab} less than or approximately equal 3.0) over the range 0.7 less than or approximately equal p{T} less than or approximately equal 3.5 GeV/c. The spectra are compared to pi{0} spectra measured(More)
Photon energy spectra up to the kinematic limit have been measured in 190 MeV proton reactions with light and heavy nuclei to investigate the influence of the multiple-scattering process on the photon production. Relative to the predictions of models based on a quasi-free production mechanism a strong suppression of bremsstrahlung is observed in the(More)
The cross-sections of relativistic deuteron reactions on natural copper were studied in detail by means of activation method. The copper foils were irradiated during experiments with the big Quinta uranium target at Joint Institute for Nuclear Research (JINR) in Dubna, Russia. The deuteron beams with energies ranging from 1 GeV up to 8 GeV were produced by(More)
Photon energy spectra up to the kinematic limit have been measured in 190 MeV proton reactions with light and heavy nuclei to investigate the influence of the multiple-scattering process on the photon production. Relative to the predictions of models based on a quasi-free production mechanism a strong suppression of bremsstrahlung is observed in the(More)
Dilepton production has been measured with HADES, the “High Acceptance DiElectron Spectrometer”. In pp collisions at 2.2GeV kinetic beam energy, exclusive η production and the Dalitz decay η → γee has been reconstructed. The electromagnetic form factor is well in agreement with existing data. In addition, an inclusive ee spectrum from the C+C reaction at(More)
The invariant-mass spectrum of e+e- pairs produced in 12C+12C collisions at an incident energy of 2 GeV per nucleon has been measured for the first time. The measured pair production probabilities span over 5 orders of magnitude from the pi(0)-Dalitz to the rho/omega invariant-mass region. Dalitz decays of pi(0) and eta account for all the yield up to 0.15(More)
The longitudinal re-acceleration phenomenon of the fragmentation residues, as found recently in projectile fragmentation of uranium [1,2], has been interpreted [3] as the postulated spectator response to the participants’ blast [4]. According to transport calculations, the longitudinal momenta of the surviving residues yield a direct access to the(More)