Prompt neutron
Prompt neutron emission and energy balance in 235U(n,f)
... after prompt neutron emission by correcting for angular dependent energy loss in the target and backing foil and pulse height defect in the counting ...thermal neutron induced fission ...before ...
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Modelling of reaction cross sections and prompt neutron emission
... Abstract. Accurate nuclear data concerning reaction cross sections and the emission of prompt fission neutrons (i.e. multiplicity and spectra) as well as other fission fragment data are of great importance for ...
5
Investigation of the prompt neutron emission mechanism in low energy fission of 235,233U(nth, f) and 252Cf(sf)
... measurements, neutron detector background, neutron detector e ffi ciency, angular and neutron en- ergy resolution, fragment transmission of the start and stop MWPDs, the fragment detector efficiency and ...
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Point-by-point model calculation of the prompt neutron multiplicity distribution ν(A) in the incident neutron energy range of multi-chance fission
... Abstract. Prompt neutron multiplicity distributions ν (A) are required for prompt emission correction of double energy (2E) measurements of fission fragments to determine pre-neutron fragment ...
6
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 ...
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Study of the (n,γf) process on 239Pu
... and prompt neutron multiplicity has been performed using the CONRAD code developed at ...the prompt neutron multiplicity, two sets of experimental data are pro- vided in the EXFOR database at ...
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Prompt fissionγ-ray characteristics from neutron-induced fission on 239Pu and the time-dependence of prompt-γray emission
... the prompt energy release by neutrons and γ rays accounts for about 5% of the total prompt heat set free in nuclear ...definition prompt fission γ-rays may be emitted still after several ...
8
Fission cross-sections, prompt fission neutron and γ-ray emission in request for nuclear applications
... that, prompt neutron multiplicities are being investigated for the major isotopes 235 U, 239 Pu in the neutron-resonance region using a newly developed scintillation detector array (SCINTIA) and an ...
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Prompt and Delayed Neutron Emissions and Fission Product Yield Calculations with Hauser-Feshbach Statistical Decay Theory and Summation Calculation Method
... In this work we demonstrated a fully consistent approach to calculate some fission observ- ables starting from a unique fission fragment distribution. We employed the recently devel- oped Hauser-Feshbach fragment decay ...
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Sub-barrier resonance fission and its effects on fission fragment properties, exemplified on 234,238U(n,f)
... (called prompt fission) is characterized by quantities referring to both FF and emitted prompt neutrons and ...The prompt neutron and gamma-ray quantities can be also given as a function of ...
5
Investigating Prompt Fission Neutron Emission from 235U(n,f) in the Resolved Resonance Region
... of prompt emission in fission is of importance in understanding the fission process in general and the sharing of excitation energy among the fission frag- ments in ...on prompt neutron emission from ...
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Estimation of Covariances on Prompt Fission Neutron Spectra and Impact of the PFNS Model on the Vessel Fluence
... fragment neutron multiplicity ¯ ν L,H over the total average prompt neutron multiplicity ¯ ν L + ν ¯ H ...several prompt fission particle-related properties, in the frame of one consistent ...
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Regulating the Nuclear Reactor through Changes of the Fraction of Delayed Neutrons: Theoretical Probabilities
... the prompt neutron cascade multi- plication coefficient which is the ratio of the rate of the appearance of prompt neutrons to the rate of the absorp- tion of all neutrons (the ratio of the number of ...
6
Recent developments of the FALSTAFF experimental setup
... The prompt neutron multiplicity can then be investigated as a function of fragment mass and kinetic energy, which is related to the excitation energy sharing between the fission ...
8
Prompt γ-ray spectroscopy of the neutron-rich 124Cd
... of the University of Jyväskylä (JYFL) with an average intensity of ∼ 0.1 pnA. The target was thick enough to stop the majority of the recoiling fission fragments. The proton-beam energy of 25 MeV was chosen as a ...
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Development of Monte Carlo Code for Coincidence Prompt Gamma-ray Neutron Activation analysis
... of neutron transport by using piecewise fitted neutron cross sections of ...from neutron inelastic scattering reaction and radioisotope decay gamma-ray library, and included the NaI detector response ...
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First Results on 238U(n,f) Prompt Fission Neutron Spectra from 1 to 200 MeV incident neutron energy
... incoming neutron from the spallation target to the fission chamber and the time of flight of the emitted neutron from the fission chamber to the scintillator were ...emitted neutron kinetic ...
6
Investigation of Prompt Gamma-Ray Neutron Activation Analysis for Determining the Phase Amounts in Multiphase Flow
... coupled neutron,/photon Monte Carlo transport code. The neutron energy regime is from 10 -11 to ...sample neutron beam elemental analysis, oil well logging elemental analysis and aluminum alloy ...
153
Evaluating the 239Pu Prompt Fission Neutron Spectrum Induced by Thermal to 30 MeV Neutrons
... First benchmarks results are presented in Table 2 for the criticality k eff of the Jezebel (PMF1), Flattop-Pu (PMF6) and a suite of thermal solution (PST) assemblies [21]. They were frist calculated using ENDF/B-VII.1 ...
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Technology for humanitarian landmine clearance
... iii The limits of a high-tech detection technique neutron irradiation and detection of prompt gamma rays were examined a to advance understanding of this method and b to demonstrate the [r] ...
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