Compton Sampling Surface For Monte Carlo Calculations in The Energy Range 0.1 to 100 keV

Dişbudak, Haydar


Photoelectron, compton and characteristic x-ray escape from an HPGe detector in the range 8-52 keV
Yilmaz, E; Can, Cüneyt (Wiley, 2004-11-01)
Escape of photoelectrons, Compton-scattered photons and Ge x-rays from an HPGe detector was studied as a function of energy in the range 8-52 keV. A variable-energy source producing Cu, Rb, Mo, Ag, Ba. and Tb x-rays was used. All three mechanisms for energy loss were observed in the same experiment for Ba and Tb, while only x-ray and photoelectron escapes were evident in the spectra for Ag, Mo, Rb, and Cu. Spectral features and possible mechanisms for partial energy deposition were investigated. A Monte Car...
Quantum emitter interacting with graphene coating in the strong-coupling regime
Gunay, Mehmet; Karanikolas, Vasilios; ŞAHİN, RAMAZAN; Ovali, Rasim Volga; Bek, Alpan; TAŞGIN, MEHMET EMRE (2020-04-14)
We demonstrate the strong coupling of a quantum dot and a graphene spherical shell coating it. Our simulations are based on solutions of three-dimensional Maxwell equations, using a boundary element method approach. Interaction between the nanostructures produces sharp hybrid modes, even when the two are off-resonant. The coupling of the light to these "very sharp" plexcitonic resonances is an order of magnitude larger than its coupling to a quantum dot, and they are voltage tunable (continuously) in an 80-...
Optical absorption spectroscopy at interfaces
Toparlı, Çiğdem (Springer, London/Berlin , 2015-10-01)
This chapter summarises the physical principles of optical absorption spectroscopy and its use for the characterisation of surfaces and interfaces. After a brief discussion of the fundamentals of absorption spectroscopy and its relation to quantum mechanics, the chapter discusses the basics of optics at interfaces, focusing on the absorption of light by molecules in the interfacial region. Because of fundamental similarities, the chapter will touch on spectroscopy of both electronic and vibrat...
Interference studies in slotted silica tube trap technique
Korkmaz, D; Mahmut, M; Helles, R; Ertas, N; Ataman, Osman Yavuz (2003-01-01)
Interference effects of KCl, NH4H2PO4, (NH4)(2)CO3, MgCl2, NH4NO3, NaNO3, (NH4)(2)SO4, MgSO4.7H(2)O, CaCl2, Ca(NO3)(2) and NaCl on Bi, Cd, In, Pb and Sb were investigated using the atom trapping technique with a double slotted silica tube. Analyte solutions at concentration levels of 60, 6, 300, 75, 100 ng mL(-1) for Bi, Cd, In, Pb and Sb, respectively, were aspirated into an air-acetylene flame and analyte species were collected on the silica surface. Revolatilization was effected by aspirating IBMK at the...
Pulse frequency fluctuations of magnetars
Cerri-Serim, D.; Serim, Muhammed Miraç; Sahiner, S.; Inam, S. C.; Baykal, Altan (Oxford University Press (OUP), 2019-05-01)
Using RXTE, Chandra, XMM-Newton and Swift observations, we construct the power spectra and torque noise strengths of magnetars for the first time. For some of the sources, on time-scales of months to years, we measure strong red noise that might be a consequence of their outbursts. We compare the noise strengths of magnetars with those of radio pulsars by investigating the possible correlations of noise strength with spin-down rate, magnetic field and age. Using these correlations, we find that the noise st...
Citation Formats
H. Dişbudak, “Compton Sampling Surface For Monte Carlo Calculations in The Energy Range 0.1 to 100 keV,” Middle East Technical University, 1989.