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The exact sizes of a Deuteron are extremely important today because deuterons are proposed for use as a raw material for the completion of the merger in the nuclear power station. The work proposes a study in the kinematic and dyn...
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The exact sizes of a Deuteron are extremely important today because deuterons are proposed for use as a raw material for the completion of the merger in the nuclear power station. The work proposes a study in the kinematic and dynamic design of a particle deuteron in motion. Mechanical equations of movement introduced are original and have been already determined for the study of a basic particle located in motion, such as for example the electron. The paper presents all the dimensions of a deuteron in motion, determined with an ultra-high precision depending on its speed of travel. The equation of motion has been deducted and using the theory of the mechanisms and of the classic mechanics because they have been used and moments of mechanical inertia mass of a body when it is in motion.
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Deuteron-deuteron (D-D) fusion reactions are foreseen for the next stage fusion reactors. A computational model is developed for simulating the neutron production by accelerating deuterons with energy less then 10 MeV onto solid t...
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Deuteron-deuteron (D-D) fusion reactions are foreseen for the next stage fusion reactors. A computational model is developed for simulating the neutron production by accelerating deuterons with energy less then 10 MeV onto solid targets containing deuterium. It requires the specification of the beam and target characteristics (e.g. deuterons energy, deuterium atomic fraction). The model is implemented in the subroutines of the MCNPX and MCNP5 codes, which need so far to be recompiled. The deuterons are transported inside the solid target by a Monte Carlo method. The neutrons are generated with the angle - energy distribution as defined by the laws and nuclear data for the deuteron-deuteron reaction in the ENDF/B-Ⅶ.0 library. The sensitivity studies on the input parameters of the D-D model are presented. The D-D source model is finally validated by an experiment, which has been performed by the FNG team at the IRMM with a high energy resolution detector. The results of the simulations indicate that the source model may be useful for the evaluation of the D-D neutron source term and associated uncertainties in experimental facilities.
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We present measurements of differential cross sections and analyzing powers for the elastic ~2H(d, d)d scattering process. The data were obtained using a 130 MeV polarized deuteron beam. Cross sections and spin observables of the ...
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We present measurements of differential cross sections and analyzing powers for the elastic ~2H(d, d)d scattering process. The data were obtained using a 130 MeV polarized deuteron beam. Cross sections and spin observables of the elastic scattering process were measured at the AGOR facility at KVI using two independent setups, namely BINA and BBS. The data harvest at setups are in excellent agreement with each other and allowed us to carry out a thorough systematic analysis to provide the most accurate data in elastic deuteron-deuteron scattering at intermediate energies. The results can be used to confront upcoming state-of-the-art calculations in the four-nucleon scattering domain, and will, thereby, provide further insights in the dynamics of threeand four-nucleon forces in few-nucleon systems.
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Electron-deuteron tensor polarization T21(q) is calculated for thirty-three N-N local potential models. New relations have been found between the peak value of T21(q) and some of the deuteron properties. An experimental value of d...
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Electron-deuteron tensor polarization T21(q) is calculated for thirty-three N-N local potential models. New relations have been found between the peak value of T21(q) and some of the deuteron properties. An experimental value of deuteron D-state probability P_D = 5.9861% ± 0.2687% is deduced.
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The relativistic light-front wave function for the nonrelativistic counterpart of the np S-1(0) scattering state is calculated in the one-boson-exchange model. This wave function is determined by two components instead of one in t...
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The relativistic light-front wave function for the nonrelativistic counterpart of the np S-1(0) scattering state is calculated in the one-boson-exchange model. This wave function is determined by two components instead of one in the nonrelativistic case. The extra component having a relativistic origin is found to dominate at q greater than or equal to 400 MeV/c. [References: 14]
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A new version of the separable kernel of the nucleon-nucleon interaction in the Bethe-Salpeter approach is presented. The phase shifts are fitted to recent experimental data for singlet and uncoupled triplet partial waves of the n...
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A new version of the separable kernel of the nucleon-nucleon interaction in the Bethe-Salpeter approach is presented. The phase shifts are fitted to recent experimental data for singlet and uncoupled triplet partial waves of the neutron-proton scattering with total angular momenta J = 0, 1. The results are compared with other model calculations.
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The creation of new measuring instruments is often accompanied by finding important scientific results. In this paper, we discuss the possibility of solving the problem facing high energy physics for several decades using the futu...
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The creation of new measuring instruments is often accompanied by finding important scientific results. In this paper, we discuss the possibility of solving the problem facing high energy physics for several decades using the future NICA SPD facility. This is a problem of the existence of weak excitations of the deuteron in a highly compressed state, the solution of which is of great importance for understanding phase transitions in cold nuclear matter. The answer to this question can also help to perform a test of the color transparency attenuation mechanism, which has not been possible since the late 1980s. The paper discusses a number of theoretical and experimental indications in favor of the existence of light dibaryon excitations in the deuteron, which are below the pion production threshold, and also indicates requirements for a measuring device necessary for their registration.
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The effects of the final state interaction on the production of slow protons in semi-inclusive deep-inelastic lepton scattering off nuclei is considered within the spectator mechanism and a realistic approach in which the rescatte...
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The effects of the final state interaction on the production of slow protons in semi-inclusive deep-inelastic lepton scattering off nuclei is considered within the spectator mechanism and a realistic approach in which the rescattering in the medium of both the recoiling proton and the hadronizing nucleon debris are taken into account.
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A new method for solving the Bethe-Salpeter (BS) equation is presented. It allows to find the BS amplitude both in Minkowski and in Euclidean spaces as well as the light-front wave function. The method is valid for any kernel give...
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A new method for solving the Bethe-Salpeter (BS) equation is presented. It allows to find the BS amplitude both in Minkowski and in Euclidean spaces as well as the light-front wave function. The method is valid for any kernel given by irreducible Feynman graphs. Bethe-Salpeter equation [1] is an important tool for studying the relativistic bound state problem in a field theory framework. The BS amplitude in Minkowski space is singular, what makes the numerical resolution of BS equation difficult. Therefore it is usually solved in Euclidean space to find the binding energy. However, to describe some observables, we need the original BS amplitude in Minkowski space as well. The methods proposed so far to calculate this amplitude are valid either for the ladder kernel [2] or for a separable one [3]. We give here a brief review of results obtained by solving BS equation using a new method, developed in [4]. It allows to find the BS amplitude both in Minkowski and Euclidean spaces as well as the light-front (LF) wave function. The BS amplitude is written in terms of the Nakanishi integral representation [5]: [GRAPHICS] and substituted in the BS equation. The resulting equation is then projected on the LF plane, i.e., both parts of it are integrated over the variable k_ = k(0) - k(z). This integration eliminates singularities of the original BS amplitude. An integral equation for the weight function g(gamma, z) is derived, which for spinless particles has the form: [GRAPHICS] The projected kernel V is obtained in [4] in terms of the BS interaction kernel. This derivation does not contain any approximation.
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The measurment of the charge symmetry conserving reactions dd → ~3He p π- and dd → ~3He n π~0 is the first step of the charge symmetry breaking physics program with WASA-at-COSY. The analysis of these channels helps to underst...
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The measurment of the charge symmetry conserving reactions dd → ~3He p π- and dd → ~3He n π~0 is the first step of the charge symmetry breaking physics program with WASA-at-COSY. The analysis of these channels helps to understand the experimental conditions and provides additional parameters for theoretical studies. The data have been collected in November 2007.
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