نتایج جستجو برای: nuclear reaction and scattering
تعداد نتایج: 16945123 فیلتر نتایج به سال:
"It is not a wise choice!", this was the reaction of my father when I applied for nuclear medicine residency program 26 years ago. The old retired officer continued that hi-tech nuclear medicine is dependent on multiple advanced sections that may not be easily available especially in the developing countries. Now he is not alive to see that political misconducts have added fuel to the fire. Glo...
A boost to low energy nuclear reactions from preliminary elastic collisions ( Carambole collisions )
In conventional nuclear experiments a beam of accelerated nuclei collides with a target nucleus that is surrounded by other nuclei in a molecule, or in condensed matter, or in plasma environment. It is shown that for low collision energies the nuclear reaction is strongly boosted by the environment. The effect originates from a chain of preliminary three elastic collisions which transform the p...
We develop the Glauber theory description of initial-and final-state interactions (IFSI) in quasielastic A(p, 2p) scattering. We study the IFSI-distortion effects both for the inclusive and exclusive conditions. In inclusive reaction the important new effect is an interaction between the two sets of the trajectories which enter the calculation of IFSI-distorted one-body density matrix for inclu...
PVb prqpose a new nuclear reaction simulation, tenned the stochtzytic quantum cascade modeL which deals with proton-nucleus elastic scattering and multiple inelastic reactions. for the purpose qfmore precise dose estimation in particle cancer therapy. Based on stochastic guantization theor},, we describe the wave motion ofprotons using particie motion, i.e., IVbwtonian mechanics, and then incor...
Advanced modelling of neutron induced reactions on 238U nucleus is aimed at improving our knowledge of the neutron scattering. Capture and fission channels are well constrained by available experimental data and neutron standard evaluation. A focus of this contribution is on elastic and inelastic scattering cross sections. The employed nuclear reaction model includes – a new rotational-vibratio...
The diffraction slope parameter is investigated for elastic proton-proton and protonantiproton scattering based on the all available experimental data at intermediate square of momentum transfer in the main. Energy dependence of the elastic diffraction slope is approximated by various analytic functions in a model-independent fashion. The expanded standard logarithmic approximations allow to de...
Quasielastic C12(e,e′p) scattering was measured at spacelike 4-momentum transfer squared Q2=8, 9.4, 11.4, and 14.2 (GeV/c)2, the highest ever achieved to date. Nuclear transparency for this reaction extracted by comparing yield that expected from a plane-wave impulse approximation calculation without any final state interactions. The consistent with no Q2 dependence, up proton momenta of 8.5 Ge...
The quasielastic (QE) contribution of the nuclear inclusive electron scattering model developed by Gil, Nieves, and Oset [Nucl. Phys. A627, 543 (1997); A627, 599 (1997)] is extended to the study of electroweak charged current (CC) induced nuclear reactions, at intermediate energies of interest for future neutrino oscillation experiments. The model accounts for, among other nuclear effects, long...
How does nature hold together protons and neutrons to form the wide variety of complex nuclei in the Universe? Describing many-nucleon systems from the fundamental theory of quantum chromodynamics has been the greatest challenge in answering this question. The chiral effective field theory description of the nuclear force now makes this possible but requires certain parameters that are not uniq...
The methods devised by Gustav Mie in 1908 to explain the scattering of electromagnetic waves have a close analogy with quantum-mechanical models developed many years later describe nuclear scattering. In particular, these use either complex index refraction or potential account for attenuation caused non-elastic We briefly outline historical development and give examples illustrating between th...
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