نتایج جستجو برای: full face cross section
تعداد نتایج: 1032914 فیلتر نتایج به سال:
A four–nucleon calculation of the total 4He photodisintegration cross section is performed. The full final–state interaction is taken into account for the first time. This is achieved via the method of the Lorentz integral transform. Semi–realistic NN interactions are employed. Different from the known partial two–body 4He(γ, n)3He and 4He(γ, p)3H cross sections our total cross section exhibits...
Most models of radiative jets have been computed for the special case of a top hat initial cross section. This paper discusses the dynamics of both leading and internal working surfaces in jets with more general initial cross sections, based on both an analytic, “thin shell” model, and on a full numerical simulation. We find that a non-top hat cross section for the jet ram pressure first leads ...
A time-dependent close-coupling method is used to calculate the electron-impact ionization cross section for the outer 2p subshell of both carbon and neon atoms. The inner 1s and 2s subshells are treated using pseudopotentials, while interaction with the remaining 2p core electrons is handled in a configuration-average approximation. When the time-dependent ionization cross section for the 2p s...
The direct and conjugate shake-up cross sections for the 2p → 3p, 3s and 2s → 2p, 3s transitions are calculated for CII, NIII, OIV, FV and NeVI in a close-coupling approximation using the R-matrix method. We find that the total shake-up cross section relative to that for single photoionization decreases with increasing Z. The decrease is about a factor 10 when going from BI to NeVI. When the fu...
The U neutron-induced cross section is widely used as reference cross section for measuring other fission cross sections, but in the resonance region it is not considered as an IAEA standard because of the scarce experimental data covering the full region. In this work, we deal with a new analysis of the experimental data obtained with a detection setup based on parallel plate ionization chambe...
A Monte Carlo program is presented for the computation of the most general cross section for two-photon production in ee collisions at fixed twophoton invariant mass W . Functions implemented for the five γγ structure functions include three models of the total hadronic cross section and the lepton-pair production cross section. Prospects of a structure-function determination through a study of...
Accurate measurements of particles masses, couplings and widths are possible by measuring production cross sections near threshold. We discuss the prospects for performing such measurements at a high luminosity muon collider.
Results on the cross section measurement of Z boson pair–production at LEP 1,2 are presented. The more general case of neutral–current four–fermion production and the particular case of ZZ events enriched in b quarks are also discussed. All the results agree with the Standard Model predictions.
The cross section is a fundamental quantity which affects the accuracy of Monte Carlo simulations widely used in nuclear applications. A new dosimetry library IRDFF-II that contains evaluations include full uncertainty quantification being developed by International Atomic Energy Agency and expected to be released January 2020; preliminary version IRDFF-1.05 was 2014 tested this work. Validatio...
Introduction: This paper studies the frequency with which hydrodynamic parameters change in sudden expansion section of axisymmetric pressure flow, based on boundary layer equations. Methods: The suggested method reveals regularity changes flow transitional area, making it possible to obtain a velocity profile any cross-section under common initial and conditions. Based general solutions, we st...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید