Browsing FEF, Fizik Bölümü, Bildiri & Sunum Koleksiyonu by Issue Date
Now showing items 1-20 of 46
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Optical characterization of weakly absorbing PP, PE, and PP/PE films
(The Optical Society, 2003-08)The transmittance, absorbance, and reflectance of polypropylene (PP), polyethylene (PE), and polypropylene/polyethylene (PP/PE) blends prepared by a hot pressing method are investigated. IR and UV spectra of PP, PE, and ... -
Effect of tissue heterogeneity on detectability of optical signals
(SPIE, 2006)Vascularization (hemoglobin concentration) is the main intrinsic contrast in near infrared optics and may be considered as the background heterogeneity or biological noise. This noise causes complexity of the assessment ... -
CAST - A CERN experiment to search for solar axions
(American Institute of Physics, 2007)The CAST experiment at CERN is the only running solar axion telescope. The first results obtained so far with CAST - PHASE I is presented, which compete with the best astrophysically derived limits of the axion-to-photon ... -
Search for low energy solar axions with CAST
(Deutsches Elektronen-Synchrotron (DESY), 2008)We have started the development of a detector system, sensitive to single photons in the eV energy range, to be suitably coupled to one of the CAST magnet ports. This system should open to CAST a window on possible detection ... -
Search for solar axions with the CAST experiment
(SISSA, 2008)The CERN Axion Solar Telescope (CAST) is searching for axions produced by the Primakoff process in the solar core. CAST is using a dipole magnet where axions could be converted back into X-rays. Phase I data analysis ... -
Search for solar axions with the CAST-experiment
(World Scientific, 2008)Solar axions can be produced in the Sun via the so-called Primakoff effect. The CERN Axion Solar Telescope (CAST) uses an LHC prototype magnet of about 9 T to reconvert these axions into photons. The magnet is able to ... -
Decay rate measurement of perylene dye molecules attached to porous silicon nanostructures
(SPIE, 2008)The radiative decay rates of perylene dye molecules, attached to silicon nano-rods are investigated by means of timeresolved fluorescence experiments. The decay rates of dye molecules in the vicinity of silicon nano-rods ... -
Solar axion search with the CAST experiment
(Cornell University Library, 2008)The CAST (CERN Axion Solar Telescope) experiment is searching for solar axions by their conversion into photons inside the magnet pipe of an LHC dipole. The analysis of the data recorded during the first phase of the ... -
Fourth SM family and higgs at hadron colliders
(CERN, 2008-09-04)Higgs Boson production at hadron colliders is dominated by gluon-gluon fusion process, hence any change in the cross-section of the gluon-gluon fusion will practically result with the same amount of change on the total ... -
In situ measurement of humidity induced changes in the refractive index and thickness of polyethylene glycol thin films
(Society of Photo Optical Instrumentation Engineers, 2008-11-18)Humidity induced changes in the refractive index and thickness of polyethylene glycol (PEG) thin films are in situ determined by optical waveguide spectroscopy. PEG brushes are covalently attached to the surface of a thin ... -
The TAC IR FEL oscillator facility project
(2009)The TAC (Turkish Accelerator Center) IR FEL Oscillator facility, which has been supported by Turkish State Planning Organization (SPO) since 2006, will be based on a 15-40 MeV electron linac accompanying two different ... -
Probing the eV-mass range for solar axions with CAST
(IEEE, 2010)The CERN Axion Solar Telescope (CAST) is searching for solar axions which could be produced in the core of the Sun via the so-called Primakoff effect. Not only would these hypothetical particles solve the strong CP problem, ... -
Baryon-baryon-meson coupling constants in QCD
(AIP Publishing, 2010)The strong coupling constant of decuplet and octet baryons to vector and pseudoscalar mesons are calculated in light cone QCD sum rules in general case and when the SU(3)f symmetry is taken into account. A comparison of ... -
Heavy-light scalar and axial-vector mesons decay constants and masses in QCD sum rule approach
(Proceedings of Science, 2010)Many new results on heavy-light decay constants and masses have been obtaining recently thanks to advanced experimental techniques and searches. These experiments have learned a lot from states made of both light and heavy ... -
FCNC transition of Sigma(Q) to nucleon
(SISSA, 2010)The loop level flavor changing neutral current transitions of the Sigma(b) -> nl(+)l(-) and Sigma(c) -> p l(+)l(-) are investigated in full QCD and heavy quark effective theory in the light cone QCD sum rules approach. ... -
Semileptonic Bc to P-wave charmonia (Xc0,X c1,hc) transitions within QCD sum rules
(AIP Publishing, 2010-06)The form factors of the semileptonic Bc→S(AV) ℓν(ℓ=τ,μ,e) transitions, where S and AV denote the scalar Xc0 and axial vector (Xc1,hc) mesons, are calculated within the framework of the three-point QCD sum rules. The results ... -
CAST: Recent results & future outlook
(Verlag Deutsches Elektronen-Synchrotron, 2010-07)The CAST (CERN Axion Solar Telescope) experiment is searching for solar axions by their conversion into photons inside the magnet pipes of an LHC dipole. The analysis of data taken so far has shown no signal above the ... -
Ultralow background periods in CAST Micromegas detectors and tests in the Canfranc underground laboratory
(IOP Publishing, 2011)Micromegas detectors have shown a low and stable background level in the CAST experiment due to their low radioactive materials, good energy resolution and spatial resolution. Since 2008, four ultralow background periods ... -
Latest results and prospects of the CERN Axion Solar Telescope
(IOP Publishing, 2011)The CERN Axion Solar Telescope (CAST) experiment searches for axions from the Sun converted into few keV photons via the inverse Primakoff effect in the high magnetic field of a superconducting Large Hadron Collider (LHC) ... -
∑b,c to nucleon transitions in light cone QCD sum rules
(American Institute of Physics, 2011)The loop level flavor changing neutral current transitions of the ∑b→ nl+l-and ∑c→ pl+l- are investigated in the light cone QCD sum rules approach. Using the most general form of the interpolating current for ∑Q, Q =b or ...
