[PDF] Top 20 Hepatopatía en pacientes con enfermedad inflamatoria intestinal
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Prompt Fission Neutron Investigation in 235U(nth,f) and 252Cf(sf) Reactions
... each fission event the FF and PFN kinetic energies, FF masses along with the angle between PFN and FF motion should be ...between fission axis and the cathode plane ... See full document
7
Investigation of the prompt neutron emission mechanism in low energy fission of 235,233U(nth, f) and 252Cf(sf)
... the prompt fission neutrons emitted by acceler- ated fragments are calculated using experimental data for 0 ◦ , 18 ◦ and 36 ◦ angles relative to the fission direction ...the prompt ... See full document
6
Prompt gamma rays from 252Cf(sf) and their angular distributions
... the fission trigger for the coincident measurement of γ rays, for which energy and time-of- flight (TOF) between sample and detector are ...distinguish prompt γ rays from other photons, emitted e.g. in ... See full document
20
Analysis of prompt fission neutrons in 235U(nth,f) and fission fragment distributions for the thermal neutron induced fission of 234U
... As commonly known, measuring neutrons is not straightforward. In this work we are forced to detect them indirectly through their recoil to a proton. From the recoil energy the generated light output is extracted and ... See full document
36
Prompt fission γ-rays from the reactions 252Cf(SF) and 235U(nth, f) – new data
... In Figure 2 the corresponding spectra are shown for the reaction 235 U(n th , f). Again, we compare our experimental data with the historical data from Verbinski et al. [5], to the ENDF/B-VII.1 [23] evaluated ... See full document
22
Uncertainties in the Fluence Determination in the Surveillance Samples of VVER-440
... Reactor pressure vessels (RPV) are non-restorable equipment and their lifetime may restrict the nuclear power plant-life as a whole. Surveillance specimen (SS) programs for RPV materials are among the most important ... See full document
5
Fission cross-sections, prompt fission neutron and γ-ray emission in request for nuclear applications
... the prompt fission neutron multiplicity per fragment from this experiment is compared to literature data in ...per fission is shown as a function of the TKE of the fission ...more ... See full document
11
Neutron-induced fission: properties of prompt neutron and γ rays as a function of incident energy
... In Fig. 2, we present the predicted values for average TKE, pre- and post-neutron emissions. At thermal incident energy, the average pre-neutron emission TKE is shifted within recommended errors from the ... See full document
12
Measurements of the Prompt Fission Neutron Spectrum at LANSCE: The Chi-Nu Experiment
... Fig. 1. This may be counterintuitive because scattering acts to decrease the neutron energy. However, it can be shown that these counts are caused by neutrons that travel to a detector without scattering and with ... See full document
9
Sensitivity of the 252Cf(sf) neutron observables to the FREYA input yield functions Y(A, Z, TKE)
... Figure 6 shows the dependence of the mean neutron multiplicity ν on the total kinetic energy of the two fission fragments. To better bring out the results, magnified views are shown in Fig. 7. Also here it ... See full document
12
Reexamination of Criticality Accident in JCO
... chain reactions can proceed in the small area of ...nuclear fission reactions (nucleon-nucleon collision together with nuclear fission) each by each, and we clarify the microscopic processes ... See full document
64
Prompt and Delayed Neutron Emissions and Fission Product Yield Calculations with Hauser-Feshbach Statistical Decay Theory and Summation Calculation Method
... the fission dynamics and mass, kinetic energy distributions of excited fission ...of fission by Langevin equations is one of the examples, which can treat the deformation of each fragment ... See full document
7
Systematic Quantification of Uncertainties for Evaluated Prompt Fission Neutron Spectra and Multiplicities
... In the course of this work, we have developed an evaluation package for analyzing and predicting PFNS and PFNM. Written in modern Fortran, it is made up of various mod- ules that can be used to perform LA model ... See full document
20
Recent developments of the FALSTAFF experimental setup
... the fission discovery, many questions remain still ...the fission fragment kinetic energy, mass and charge for neutron-induced fission over a wide incident neutron energy range can ... See full document
10
Study of the (n,γf) process on 239Pu
... In the evaluated file of the fission cross section, the J π = 1 + resonances are considered as being produced only through immediate fission, however, they are also produced by two-step reactions, as previously ... See full document
134
Summation calculation of delayed neutron yields for 235U, 238U and 239Pu, based on various fission yield and neutron emission probability databases
... [1] L. Mathieu, O. Serot, T. Materna, A. Bail, U. Köster, H. Faust, O. Litaize, E. Dupont, C. Jouanne, A. Letourneau, S. Panebianco, New neutron long-counter for delayed neutron investigations with the ... See full document
7
A study of the construction of the correlation matrix of 241Pu(nth,f) isobaric fission yields
... The last step is the absolute normalization to obtain the yields, Y ( A ). Ideally, this normalization is done by taking P i∈H NðA i Þ mgd ¼ 1, H being the masses of the heavy peak. This is true for pre-neutron ... See full document
5
Prompt fission gamma-ray emission spectral data for 239Pu(n,f) using fast directional neutrons from the LICORNE neutron source
... LICORNE neutron source generates forward focused neutron cones by exploiting neutron- producing reactions in inverse ...thermal neutron background in the experimental ...fast ... See full document
5
Applications of Event-by-Event Fission Modeling with FREYA
... Finally, we discuss correlations between the fission product energies and the neutron multiplicity. The combined kinetic energy of the two resulting (post-evaporation) product nuclei is shown as a function ... See full document
12
Neutron capture and fission reactions on 235U: cross sections, α-ratios and prompt γ-ray emission from fission
... the operation and design of current and advanced nuclear reactors. The required accuracy in this energy region (100 eV to 2.25 keV) ranges between 5% and 7%, to be compared with the present differences of 20% between the ... See full document
7
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