Browsing Makale Koleksiyonu by Publisher "WORLD SCIENTIFIC PUBL CO PTE LTD"
Now showing items 1-20 of 38
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Analysis of excited neutrinos at the CLIC
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2014)We analyze the single and pair production of excited neutrinos at the CLIC through the processes e(+)e(-) -> upsilon*upsilon(-) -> e(+) e -. e+gamma*e(-) -> e(+)upsilon*W- and e(+)e(-) -> e(+)gamma*gamma*e(-) -> e(+) ... -
Barrier thickness dependence of optical absorption of excitons in GaAs coupled quantum wire
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2004)We have calculated the binding energy of excitons, and the interband optical absorption in rectangular coupled quantum-well wires of GaAs surrounded by Ga1-chiAlchiAs in effective-mass approximation, using the variational ... -
Comparison of Ga1-xAlxAs/GaAs and Ga(1-x)ln(x)As/GaAs quantum wells as dependent on Al and In concentrations under intense laser field
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2015)In this study, the electronic properties of Ga1-xAlxAs/GaAs and Ga(1-x)ln(x)As/GaAs quantum wells (QWs) are theoretically calculated as dependent on the intense laser field (ILF) and x-concentration value within the effective ... -
Comprehensive structural and optical characterization of AlAs/GaAs distributed Bragg reflector
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2019)30-pair AlAs/GaAs distributed Bragg reflector (DBR), which has 1030 nm center reflectivity, is studied extensively by means of High Resolution X-ray Diffraction (HR-XRD) and reflectivity measurements. Theta/2-Theta ... -
A congruence for some generalized harmonic type sums
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2018)In 1862, Wolstenholme proved that the numerator of the (p - 1)th harmonic number is divisible by p(2) for any prime p >= 5. A variation of this theorem was shown by Alkan and Leudesdorf. Motivated by these results, we prove ... -
CURRENT-VOLTAGE CHARACTERISTICS OF THERMALLY ANNEALED Ni/n-GaAs SCHOTTKY CONTACTS
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2018)The Schottky barrier type Ni/n-GaAs contacts fabricated by us were thermally annealed at 600 degrees C and 700 degrees C for 1 min. The apparent barrier height Phi(ap) and ideality factor of the diodes were calculated from ... -
DEPENDENCE OF CHARACTERISTIC DIODE PARAMETERS IN Ni/n-GaAs CONTACTS ON THERMAL ANNEALING AND SAMPLE TEMPERATURE
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2009)We have prepared the sputtered Ni/n-GaAs Schottky diodes which consist of as deposited, and diodes annealed at 200 and 400 degrees C for 2 min. The effect of thermal annealing on the temperature-dependent current-voltage ... -
THE EFFECT OF ELECTROMAGNETIC PROPERTIES OF NEUTRINOS ON THE PHOTON-NEUTRINO DECOUPLING TEMPERATURE
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2012)We examine the impact of electromagnetic properties of neutrinos on the annihilation of relic neutrinos with ultrahigh energy cosmic neutrinos for the nu(nu) over bar -> gamma gamma process. For this process, photon-neutrino ... -
Effect on frontier molecular orbitals of substituents in 5-position of uracil base pairs in vacuum and water
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2017)The most stable structure of 5-substituted uracil base pairs and metal-mediated-5-substituted uracil complexes are determined. Density functional theory (DFT) method is used in the calculations which are carried out both ... -
The effects of hydrostatic pressure and applied electric field on shallow donor impurities in GaAs/GaAlAs graded quantum well
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2005)Using a variational approach, we have investigated the effects of the hydrostatic pressure, the well dimension, impurity position and electric field direction on the binding energy of shallow donor impurities in GaAs/GaAlAs ... -
Effects of magnetic and electric fields on the hydrogenic impurity in an ellipsoidal parabolic quantum dot
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2008)The binding energy of a hydrogen-like impurity in an ellipsoidal parabolic quantum dot under the magnetic and electric fields have been discussed by using the effective mass approximation and the variational method. We ... -
THE EFFECTS OF TEMPERATURE AND HYDROSTATIC PRESSURE ON THE DIAMAGNETIC SUSCEPTIBILITY OF A DONOR IN A QUANTUM WELL
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2011)Using the effective-mass approximation within a variational scheme, we have calculated the diamagnetic susceptibility and binding energy of a hydrogenic donor in a quantum well under different temperatures and hydrostatic ... -
The electric field dependence of the photoionization cross-section of shallow donor impurities in quantum dots: Infinite and finite model
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2006)Using a variational approach, we have calculated the photo-ionization cross-section of a shallow donor impurity in a quantum dot with finite and infinite potential barriers in the presence of an electric field as a function ... -
ELECTRONIC STRUCTURE AND BAND BENDING OF MODULATION-DOPED GaAs/Al-x Ga1-xAs SYMMETRIC AND ASYMMETRIC DOUBLE QUANTUM WELLS UNDER AN APPLIED ELECTRIC FIELD
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2009)In this study, we have calculated theoretically the effects of the electric field and doping concentration on the sub-band energies, the electron population, and total charge density in modulation-doped symmetric and ... -
Energy level and half-life determinations from photonuclear reaction on Ga target
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2016)Photonuclear reactions are important tools in the understanding of the nucleus. These reactions are also interesting for realizing the element creation processes in stellar environment. The use of bremsstrahlung photons ... -
Estimations of fission barrier heights for Ra, Ac, Rf and Db nuclei by neural networks
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2014)Accurate information about the fission barrier is important for studying of the fission process. Fission barrier is needed for discovering the island of stability in superheavy region and searching of the superheavy elements. ... -
FINITE ELEMENT ANALYSIS OF VALENCE BAND STRUCTURE OF SQUARE QUANTUM WELL UNDER THE ELECTRIC FIELD
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2009)Valence band structure with spin-orbit (SO) coupling of GaAs/Ga1-xAlxAs square quantum well (SQW) under the electric field by a calculation procedure based on a finite element method (FEM) is investigated using the multiband ... -
Finite presentability of generalized Bruck Reilly *-extension of groups
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2016)In [Finite presentability of Bruck-Reilly extensions of groups, J. Algebra 242 (2001) 2030], Araujo and RuAtic studied finite generation and finite presentability of Bruck Reilly extension of a group. In this paper, we aim ... -
FOURTH GENERATION LEPTONS SEARCH IN gamma gamma -> l(-) l(+) PROCESS AT THE CERN-LHC
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2011)The pp. pXp production is known to be one of the cleanest channels at the Large Hadron Collider (LHC). In this work, we investigate the potential of the exclusive pp -> pl(-) l(+) p process to probe fourth family leptons ... -
Infrared transitions between hydrogenic states in GaInNAs/GaAs quantum wells
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2016)The effects of nitrogen and indium concentrations on the 1s, 2s, 2p(0) and 2p +/--like donor impurity energy states in a single Ga1-xInxNyAs1-y/GaAs quantum well (QW) are investigated by variational approach within the ...