Results 21 to 30 of about 195,540 (89)
Monte Carlo Simulation Of Active Neutron Interrogation System Developed For Detection Of Illicit Materials [PDF]
Acta Physica Polonica B, Vol.48, No.10, October 2017, 2017 Nowadays, the current threat of international terrorism is set to a severe level, demanding worldwide enhanced security. Radioactive materials that could be fashioned into a radiation dispersal device typically emit gamma rays, while fissile materials such as uranium and plutonium emit both neutrons and gamma rays via spontaneous or induced fission ...
arxiv +1 more source
Temperature-Induced Denaturation of BSA Protein Molecules for Improved Surface Passivation Coatings.
ACS Applied Materials and Interfaces, 2018 Bovine serum albumin (BSA) is the most widely used protein for surface passivation applications, although it has relatively weak, nonsticky interactions with hydrophilic surfaces such as silica-based materials.
J. H. Park +5 more
semanticscholar +1 more source
Thermal quenching of electronic shells and channel competition in cluster fission [PDF]
Phys.Rev.Lett. 89 (2002) 173403, 2002 Experimental and theoretical studies of fission of doubly-charged Li, Na, and K clusters in the low fissility regime reveal the strong influence of electronic shell effects on the fission products. The electronic entropy controls the quenching of the shell effects and the competition between magic-fragment channels, leading to a transition from favored
arxiv +1 more source
Time-dependent Monte Carlo in fissile systems with beta-delayed neutron precursors [PDF]
arXiv, 2021 In the field of nuclear reactor physics, transient phenomena are usually studied using deterministic or hybrids methods. These methods require many approximations, such as: geometry, time and energy discretizations, material homogenization and assumption of diffusion conditions, among others.
arxiv
Two-Phase Emission Detector for Measuring Coherent Neutrino-Nucleus Scattering [PDF]
IEEE Trans.Nucl.Sci. 51 (2004) 2151-2155, 2004 Coherent scattering is a flavor-blind, high-rate, as yet undetected neutrino interaction predicted by the Standard Model. We propose to use a compact (kg-scale), two-phase (liquid-gas) argon ionization detector to measure coherent neutrino scattering off nuclei.
arxiv +1 more source
Induction of nuclear fission by high-voltage application [PDF]
arXiv, 2007 In nuclear power generation, fissile materials are mainly used. For example, $U^{235}$ is fissile and therefore quite essential for use of nuclear energy. However, the material $U^{235}$ has very small natural abundance less than 1 %. We should seek possibility of utilizing fissionable materials such as $U^{238}$ because natural abundance of such ...
arxiv
Scanning of Vehicles for Nuclear Materials [PDF]
, 2013 Might a nuclear-armed terrorist group or state use ordinary commerce to deliver a nuclear weapon by smuggling it in a cargo container or vehicle? This delivery method would be the only one available to a sub-state actor, and it might enable a state to make an unattributed attack.
arxiv +1 more source
Statistical Mechanics of thermal denaturation of DNA oligomers [PDF]
arXiv, 2004 Double stranded DNA chain is known to have nontrivial elasticity. We study the effect of this elasticity on the denaturation profile of DNA oligomer by constraining one base pair at one end of the oligomer to remain in unstretched (or intact) state. The effect of this constraint on the denaturation profile of the oligomer has been calculated using the ...
arxiv
Fissile material detection using neutron time-correlations from photofission [PDF]
arXiv, 2018 The detection of special nuclear materials (SNM) in commercial cargoes is a major objective in the field of nuclear security. In this work we investigate the use of two-neutron time-correlations from photo-fission using the Prompt Neutrons from Photofission (PNPF) detectors in Passport Systems Inc.'s (PSI) Shielded Nuclear Alarm Resolution (SNAR ...
arxiv
Photo-active collagen systems with controlled triple helix architecture [PDF]
, 2013 The design of photo-active collagen systems is presented as a basis for establishing biomimetic materials with varied network architecture and programmable macroscopic properties. Following in-house isolation of type I collagen, reaction with vinyl-bearing compounds of varied backbone rigidity, i.e.
arxiv +1 more source