Description
Poster presenter attendance on: Thursday 27 June from 14:30 to 16:00
Unfortunately only Xe133 usually detected in the air samples on IMS Noble Gas installations due to its relatively higher concentration in comparison with metastable xenon isotopes which concentrations in the ambient air are on few orders magnitude less and only within short distance to nuclear facilities it is possible to detect them. The new proposed method use Xe sample of big volume for...
PNNL is exploring the use of 37Ar for detecting nuclear explosion, including for use in the International Monitoring System (IMS). A high throughput 37Ar separation and measurement system was developed at Pacific Northwest National Laboratory (PNNL) to detect 37Ar activity generated from an underground nuclear explosion. Argon-37 is an activation product generated when neutrons interact with...
Gravitational field mapping is permitted by paragraph 69 of the CTBT treaty (1996; UN A/50/1027) to be deployed during the continuation period of an on-site inspection (OSI) to look for features relevant to underground nuclear explosions (UNEs). Examples of features of interest include tunnels used for horizontal emplacements, and underground voids and collapse features caused by vertical...
In this presentation we discuss findings from a study to test the sensitivity of large gadolinium-doped water detectors to antineutrinos released by nuclear-fission explosions, using updated signal and background models and taking advantage of the capacity for seismic observations to provide an analysis trigger. We find that advances in seismic monitoring and neutrino physics have made the...
Small low-cost microelectromechanical system (MEMS) triaxial sensors provide ground-acceleration measurements of moderate to large earthquakes. However, the common challenge of such sensors are low dynamic range which is because of high self noise of these systems. In this paper, a new configuration for reducing self-noise of MEMS acceleration sensors is provided. Using this configuration, a...
Detecting ocean-floor seismic activity is crucial for our understanding of the interior structure and dynamic behavior of the Earth. However, 70% of the planet's surface is covered by water and seismometers coverage is limited to a handful of permanent ocean bottom stations. It can be shown that existing telecommunication optical fiber cables can detect seismic events when combined with...
