Now showing items 31-40 of 385
High-order harmonic generation from graphene: Strong attosecond pulses with arbitrary polarization
(American Physical Society, 2013-05-03)
We explore high-order harmonic generation (HHG) from a graphene sheet exposed to intense femtosecond laser pulses based on the Lewenstein model. It is demonstrated that the HHG cutoff frequency increases with graphene ...
Gas Hydrates in Porous Media: CO2 Storage and CH4 Production
(The University of Bergen, 2014-04-25)
Multiphoton ionization and stabilization of helium in superintense xuv fields
(American Physical Society, 2011)
Multiphoton ionization of helium is investigated in the superintense field regime, with particular emphasis on the role of the electron-electron interaction in the ionization and stabilization dynamics. To accomplish this, ...
An Extended Scalar Sector: Charged Higgs and Dark Matter
(The University of Bergen, 2013-10-11)
Despite the great success of the Standard Model in describing many aspects of the experiments, there are compelling reasons that it needs to be improved. One of the major mysteries physics has been exploring is the ...
Enhanced Oil Recovery by CO2 and CO2-foam Injection in Fractured Limestone Rocks
(The University of Bergen, 2013-06-03)
This thesis is part of an ongoing study of integrated enhanced oil recovery methods in Reservoir Physics group at the Department of Physics and Technology at the University of Bergen. This experimental thesis investigates ...
Direct two-photon double ionization of H2
(American Physical Society, 2012-06-05)
We have studied the process of direct (nonsequential) two-photon double ionization of molecular hydrogen (H2). Solving the time-dependent Schr¨odinger equation by an ab initio method, total (generalized) and singlediffe ...
NMR measurements of wettability alternation in Berea Sandstone
(The University of Bergen, 2011-11-28)
When a new oil reservoir is discovered and a production strategy is chosen the knowledge about wettability characteristics for the field is of outermost importance. Wettability is a key factor for fluid distribution ...
Exclusive J /ψ photoproduction off protons in ultraperipheral p-Pb collisions at √sNN = 5.02TeV
(American Physical Society, 2014-12-05)
We present the first measurement at the LHC of exclusive J/ψ photoproduction off protons, in ultraperipheral proton-lead collisions at √sNN=5.02 TeV. Events are selected with a dimuon pair produced either in the rapidity ...
The BABAR detector: Upgrades, operation and performance
The BaBar detector operated successfully at the PEP-II asymmetric e+e− collider at the SLAC National Accelerator Laboratory from 1999 to 2008. This report covers upgrades, operation, and performance of the collider and the ...