Fissile Material Detection using Neutron Coincidence Counters [PDF]
arXiv, 2021 A paper study is conducted on the detection of fissile material using neutron coincidence counters. Three unknown independent properties of assays of fissile material assays are identified to be the effective mass, the (alpha,n) production rate and the neutron multiplication rate.
arxiv
FISSILE MATERIALS DETECTION VIA NEUTRON DIFFERENTIAL DIE-AWAY TECHNIQUE
, 2014 This work is devoted to the differential die-away technique that is widely used for active detection of fissile materials via pulsed neutron generators.
V. Batyaev, O. Bochkarev, S. V. Sklyarov
semanticscholar +1 more source
Multi-output Gaussian processes for inverse uncertainty quantification in neutron noise analysis [PDF]
arXiv, 2022 In a fissile material, the inherent multiplicity of neutrons born through induced fissions leads to correlations in their detection statistics. The correlations between neutrons can be used to trace back some characteristics of the fissile material.
arxiv
A single-shot nanosecond neutron pulsed technique for the detection of fissile materials
, 2012 A novel technique with the potential of detecting hidden fissile materials is presented utilizing the interaction of a single powerful and nanosecond wide neutron pulse with matter. The experimental system is based on a Dense Plasma Focus (DPF) device as
V. Gribkov +11 more
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Observation of Neutrons with a Gadolinium Doped Water Cerenkov Detector [PDF]
Nucl.Instrum.Meth.A607:616-619,2009, 2008 Spontaneous and induced fission in Special Nuclear Material (SNM) such as 235U and 239Pu results in the emission of neutrons and high energy gamma-rays. The multiplicities of and time correlations between these particles are both powerful indicators of the presence of fissile material. Detectors sensitive to these signatures are consequently useful for
arxiv +1 more source
Comparison between historic nuclear explosion yield formulas [PDF]
arXiv, 2021 During the Manhattan project a simple formula was developed by Bethe and Feynman in 1943 to estimate the yield of a fission-only nuclear explosion of a uniformly-dense bare-sphere of supercritical fissile material. We have not found any evidence that Bethe and Feynman knew of the first yield formula obtained by Frisch and Peierls contained within their
arxiv
Compositional and in Vitro Evaluation of Nonwoven Type I Collagen/Poly-dl-lactic Acid Scaffolds for Bone Regeneration [PDF]
Journal of Functional Biomaterials 2015, 6, 667-686, 2015 Poly-dl-lactic acid (PDLLA) was blended with type I collagen to attempt to overcome the instantaneous gelation of electrospun collagen scaffolds in biological environments. Scaffolds based on blends of type I collagen and PDLLA were investigated for material stability in cell culture conditions (37 {\deg}C; 5% CO2) in which post-electrospinning ...
arxiv +1 more source
Fragmentation Phase Transition in Atomic Clusters II -----Symmetry of Fission of Metal Clusters---- [PDF]
, 1996 We present a statistical fragmentation study of doubly charged alkali (Li, Na, K) and antimony clusters. The evaporation of one charged trimer is the most dominant decay channel (asymmetric fission) at low excitation energies. For small sodium clusters this was quite early found in molecular dynamical calculations by Landman et al.
arxiv +1 more source
Next-Generation Quantum Theory of Atoms in Molecules for the Ground and Excited State of the Ring-Opening of Cyclohexadiene (CHD) [PDF]
, 2018 The factors underlying the experimentally observed branching ratio (70:30) of the (1,3-cyclohexadiene) CHD$\rightarrow$HT (1,3,5-hexatriene) photochemical ring-opening reaction are investigated. The ring-opening reaction path is optimized by a high-level multi-reference DFT method and the density along the path is analyzed by the QTAIM and stress ...
arxiv +1 more source
Flow‐Induced Microfluidic Assembly for Advanced Biocatalysis Materials
Advanced Functional MaterialsExploring the potential of microfluidic systems, this study presents a groundbreaking approach harnessing energy in microfluidic flows within a purpose‐built microreactor, enabling precise deposition of functional biomaterials.
Phillip Lemke +8 more
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