D. V. Varentsov

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For future experiments on investigation of high-energydensity (HED) matter at GSI where an intense heavy ion beam and a petawatt laser beam from PHELIX will be used simultaneously, a new vacuum target chamber is required. Due to dimensions of the laser guiding and focusing optics, the new chamber has to be considerably larger than the presently installed at(More)
This paper presents a preliminary report on a recent beamtime experiment on investigation of heavy-ion-beam generated high-energy-density (HED) matter. The experiment has been performed at the HHT experimental area of GSI on 11–17.12.2003. Goals of the experiment. Main goals of this experiment were commissioning of a new multi-channel pyrometer for(More)
The electrical conductivity of matter under extreme pressure and/or temperature conditions is of fundamental as well as practical interest [1]. The availability of high intensity heavy ion beams at GSI makes it possible to drive matter to extreme conditions, either through direct interaction or shock wave compression. As previously reported [2], we(More)
Pressure is a key parameter in HEDP/WDM experiments performed for equation of state (EOS) research. For the measurement of pressure interferometric methods can be applied. An interferometer can measure the velocity of a moving surface, and this is related to the pressure under proper experimental conditions [1]. A fiber coupled VISAR [2, 3] (Velocity(More)
V. Ternovoi1, S. El Moussati2, A. Fedenev3, A. Fertman4, A.A. Golubev4, D.H.H. Hoffmann2, A. Hug2,3, B. Ionita2, A. Kantsyrev4, A. Khudomyasov4, M. Kulish1, J. Ling2, N. Markov4, V. Mintsev1, D. Nikolaev1, A. Pyalling1, N. Shilkin1, V. Turtikov4, S. Udrea2, A. Ulrich5, D. Varentsov3, K. Weyrich3, D. Yuriev1, and Y. Zhao6 1IPCP, Chernogolovka, Russia; 2TUD,(More)
It has been shown previously that an intense heavy ion beam with an annular focal spot could be employed to achieve a low-entropy compression of hydrogen that is enclosed in a multi-layered target as shown in Fig.1. Such a low-entropy compression would lead to theoretically predicted physical conditions necessary for hydrogen metallization[1,2]. In these(More)
The reflection on the surfaces of the sapphire creates light from a point source S which is in the focus of lens 8, resulting in a system of concentric interference patterns with centres on the axis P, which passes through the focal spot. The distance between neighboring fringes observed under angle θ from the axis P depends on the distance between the(More)
Recent experiments at the HHT area of the Plasma Physics group at the GSI were dedicated to investigation of heavy-ion-beam generated high-energy-density (HED) matter [1]. In contrast to traditional drivers like explosives, electrical discharges and powerful lasers, heavy ion beams can deposit energy into a sample material homogenously. In the performed(More)
Heavy ion beam-target interaction experiments which investigate the target density effect in the ion stopping process [1] require precise information about target parameters in the interaction region. The ion beam deposits its energy by excitation and ionization of the stopping media. This leads to its heating and expansion. The gas-target density varies(More)
The charged particle community is looking for techniques exploiting proton interactions instead of X-ray absorption for creating images of human tissue. Due to multiple Coulomb scattering inside the measured object it has shown to be highly non-trivial to achieve sufficient spatial resolution. We present imaging of biological tissue with a proton(More)