1,165 resources related to Nuclear measurements
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IEEE International Conference on Plasma Science (ICOPS) is an annual conference coordinated by the Plasma Science and Application Committee (PSAC) of the IEEE Nuclear & Plasma Sciences Society.
The Conference focuses on all aspects of instrumentation and measurement science andtechnology research development and applications. The list of program topics includes but isnot limited to: Measurement Science & Education, Measurement Systems, Measurement DataAcquisition, Measurements of Physical Quantities, and Measurement Applications.
All areas of ionizing radiation detection - detectors, signal processing, analysis of results, PET development, PET results, medical imaging using ionizing radiation
The world's premiere conference in MEMS sensors, actuators and integrated micro and nano systems welcomes you to attend this four-day event showcasing major technological, scientific and commercial breakthroughs in mechanical, optical, chemical and biological devices and systems using micro and nanotechnology.The major areas of activity in the development of Transducers solicited and expected at this conference include but are not limited to: Bio, Medical, Chemical, and Micro Total Analysis Systems Fabrication and Packaging Mechanical and Physical Sensors Materials and Characterization Design, Simulation and Theory Actuators Optical MEMS RF MEMS Nanotechnology Energy and Power
Science, technology and applications spanning the millimeter-waves, terahertz and infrared spectral regions
Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission
Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.
Electrical insulation common to the design and construction of components and equipment for use in electric and electronic circuits and distribution systems at all frequencies.
Publishes original and significant contributions relating to the theory, design, performance and reliability of electron devices, including optoelectronic devices, nanoscale devices, solid-state devices, integrated electronic devices, energy sources, power devices, displays, sensors, electro-mechanical devices, quantum devices and electron tubes.
Publishes original and significant contributions relating to the theory, design, performance and reliability of electron devices, including optoelectronics devices, nanoscale devices, solid-state devices, integrated electronic devices, energy sources, power devices, displays, sensors, electro-mechanical devices, quantum devices and electron tubes.
2006 Bio Micro and Nanosystems Conference, 2006
The ability to discriminate nucleic acid sequences is necessary for a wide variety of applications: high throughput screening, distinguishing genetically modified organisms (GMOs), molecular computing, differentiating biological markers, fingerprinting a specific sensor response for complex systems, etc. Hybridization-based target recognition and discrimination is central to the operation of nucleic acid microsensor systems. Therefore developing a quantitative correlation between mishybridization events ...
2015 International Conference on Photonics, Optics and Laser Technology (PHOTOPTICS), 2015
Once decommissioning of a nuclear facility is completed, it shall be confirmed if its site meets the site release criteria. For this the residual radioactivity in the site should be measured and assessed. This paper developed and characterized the fiber-optic sensor with a large surface area for measurement of radioactivity in soil at nuclear facility site, which is less time-consuming ...
2013 3rd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications (ANIMMA), 2013
Gamma ray spectrometry is a passive non destructive assay most commonly used to identify and quantify the radionuclides present in the complex huge objects such as nuclear waste packages. The treatment of spectra from the measurement of nuclear waste is performed in two steps: the first step is to extract the raw data from the spectra (energies and net photoelectric ...
Digest of Technical Papers. Tenth IEEE International Pulsed Power Conference, 1995
In the last 10 years, the advent of high power ion beams (HPIB) gave new opportunities to use them as an instrument in some areas of the applied and fundamental physics such as: plasma coherent radiation, equation of solid state, controlled fusion, stability issues. This paper suggests the novel HPIB application for fundamental nuclear physics, namely for the measurement of ...
IEEE Transactions on Nuclear Science, 1993
Review: [An Introduction to the Physics of High Energy Accelerators, D. A. Edwards and J. J. Syphers]This book is an outgrowth of a course given by the authors at various universities and particle accelerator schools. It starts from the basic physics principles governing particle motion inside an accelerator, and leads to a full description of the complicated phenomena and analytical ...
ISEC 2013 Special Gordon Donaldson Session: Remembering Gordon Donaldson - 4 of 7 - MRI at 130 Microtesla
The Benefits of Using IEEE Nuclear Standards: A Multi-Stakeholder View (webinar)
A Nuclear Waste Repository Grows In Finland
IMS 2011 Microapps - Panel Session: Nonlinear Measurements
IMS 2011 Microapps - Time Domain Measurements in Waveguide
IMS 2011 Microapps - Pulsed S-Parameter Measurements Using PXI Instruments
IMS 2012 Microapps - Use of FPGAs for Faster Test Times and Repeatability on Cellular Measurements
Brooklyn 5G - 2015 - Andreas F. Molisch - Channel Measurements for Massive MIMO
IMS 2012 Microapps - Basic Amplifier Measurements with the RF Vector Network Analyzer (VNA) Taku Hirato, Agilent
IMS 2012 Microapps - Generation and Analysis Techniques for Cost-efficient SATCOM Measurements Richard Overdorf, Agilent
IMS 2011 Microapps - IQ Mixer Measurements: Techniques for Complete Characterization of IQ Mixers Using a Multi-Port Vector Network Analyzer
Larson Collection interview with William Alfred Fowler
The Full Spectrum: Travelogue of the Atomic Age
Panel Session: 5G Test and Measurements - 5G Summit at IMS 2017
Robotics History: Narratives and Networks Oral Histories:Ron Daniel
Robotics History: Narratives and Networks Oral Histories: Red Whittaker
ISEC 2013 Special Gordon Donaldson Session: Remembering Gordon Donaldson - 6 of 7 - A high sensitive magnetometer system for natural magnetic field measurements
Larson Collection interview with Edward Teller
IMS MicroApps: Nonlinear Co-Simulation with Real-Time Channel Measurements
The ability to discriminate nucleic acid sequences is necessary for a wide variety of applications: high throughput screening, distinguishing genetically modified organisms (GMOs), molecular computing, differentiating biological markers, fingerprinting a specific sensor response for complex systems, etc. Hybridization-based target recognition and discrimination is central to the operation of nucleic acid microsensor systems. Therefore developing a quantitative correlation between mishybridization events and sensor output is critical to the accurate interpretation of results. Additionally, knowledge of such correlation can be used to design intelligent sensor systems that incorporate mishybridization noise into system design. Using experimental data produced by introducing single mutations (single nucleotide polymorphisms, SNPs) in the probe sequence of computational catalytic molecular beacons (deoxyribozyme gates) [Stojanovic & Stefanovic, 2003], we investigate correlations between free energy of the target-probe complex and the measured fluorescence of the deoxyribozyme gate. Experimental data for forty-five SNP- containing probe sequences are compiled and compared against the true probe sequence to determine the relationship between position, type of mutation, and the fluorescence level of the molecular beacon. The sequence set accounts for every possible SNP for a fifteen-base probe. Experiments are conducted using a 55 mul detection volume containing a modified YESi<sub>A</sub>(E6) deoxyribozyme molecular beacon (100 nM) [Stojanovic et al., 2001], TAMRA substrate (1 muM) and input sequences (2 muM). Using free energy as a first- approximation of the energetic interactions that occur during target-probe recognition, we generate empirical data for each target-probe pair using a nucleic acid hybridization thermodynamics server called HyTher (http://ozone2.chem.wayne.edu/). HyTher uses empirical fits of experimentally measured data to generate hybridization thermodynamic predictions for nucleic acid sequence pairs. Empirical data for all target-probe combinations are correlated with experimental fluorescence measurements to determine a quantitative link between target-probe hybridization free energy and molecular beacon fluorescence for each SNP-containing probe. We investigate Bayesian- based classification approaches as well as combinatorial design based methods for identifying and classifying mismatch patterns that produce similar fluorescence levels
Once decommissioning of a nuclear facility is completed, it shall be confirmed if its site meets the site release criteria. For this the residual radioactivity in the site should be measured and assessed. This paper developed and characterized the fiber-optic sensor with a large surface area for measurement of radioactivity in soil at nuclear facility site, which is less time-consuming due to ease of measurement. The fiber-optic sensor consisted of a radiation sensing probe including scintillator panel and light guide and a transmission optical fiber. The light measuring system was assembled combining it with photomultiplier tube, pre-amplifier, multichannel analyser and display. Several measurements using the light measuring system showed that, as for measuring time for measurement of cesium-137 source, 1,800 sec was the optical measurement duration, and as for reflector, aluminium foil was the best.
Gamma ray spectrometry is a passive non destructive assay most commonly used to identify and quantify the radionuclides present in the complex huge objects such as nuclear waste packages. The treatment of spectra from the measurement of nuclear waste is performed in two steps: the first step is to extract the raw data from the spectra (energies and net photoelectric absorption peaks areas) and the second step is to determine the detection efficiency of the measured scene. The establishment by numerical modeling of the detection efficiency of the measured scene requires numerical modeling of both the measuring device (in this case a hyper pure germanium detector HPGe) and numerical modeling of the measured object. Numerical detector modeling is also called diode characterization, and has a spatial response equivalent to these of the real HPGe detector. This characterization is essential for the quantification of complex and non reproducible huge objects for which the detection efficiency can not be determined empirically. The Nuclear Measurement and Valuation Laboratory (LMNE) at the Atomic Energy Commission Valduc (CEA Valduc) has developed a new methodology for characterizing the HPGe detector. It has been tested experimentally with a real diode present in the laboratory (P-type planar detector). The characterization obtained with this methodology is similar to these of a real HPGe detector with an uncertainty approaching 5 percents. It is valid for a distance ranging from 10cm to 150cm, an angle ranging from 0 to 90 degrees and energy range from 53kev to 1112keV. The energy range is obtained with a source of Barium133 and a source of Europium152. The continuity of the detection efficiency curve is checked between the two sources with an uncertainty less than 2 percents. In addition, this methodology can be extrapolated to any type of detector crystal geometry (planar).
In the last 10 years, the advent of high power ion beams (HPIB) gave new opportunities to use them as an instrument in some areas of the applied and fundamental physics such as: plasma coherent radiation, equation of solid state, controlled fusion, stability issues. This paper suggests the novel HPIB application for fundamental nuclear physics, namely for the measurement of nuclear reaction cross-sections of light elements in the range of infra low energies of 100-2000 eV. In fact, existing experimental data on cross-sections for those reactions covers the range only above 6-10 keV and respective values are higher than 10/sup -31/ cm/sup 2/. The proposed novel approach will decrease several orders the threshold value of cross-sections measured and provide new information on charge symmetry of nuclear forces and on the mechanism involving exchange meson currents. We propose to use the high intensity radially converging ion flow generated during the plasma liner implosion at the high power pulsed generator. For the d+d, d+t, p+d reactions products' registration the scintillator X-rays, neutron spectrometers and charge particle track detectors will be used. The lower threshold of the cross-section value measured by the proposed method could be as low as 10/sup -40/ cm/sup 2/. In the paper are given the various experimental schemes, calculations of the cross-section values and results of the preliminary study.
Review: [An Introduction to the Physics of High Energy Accelerators, D. A. Edwards and J. J. Syphers]This book is an outgrowth of a course given by the authors at various universities and particle accelerator schools. It starts from the basic physics principles governing particle motion inside an accelerator, and leads to a full description of the complicated phenomena and analytical tools encountered in the design and operation of a working accelerator. The book covers acceleration and longitudinal beam dynamics, transverse motion and nonlinear perturbations, intensity dependent effects, emittance preservation methods and synchrotron radiation. These subjects encompass the core concerns of a high energy synchrotron. The authors apparently do not assume the reader has much previous knowledge about accelerator physics. Hence, they take great care to introduce the physical phenomena encountered and the concepts used to describe them. The mathematical formulae and derivations are deliberately kept at a level suitable for beginners. After mastering this course, any interested reader will not find it difficult to follow subjects of more current interests. Useful homework problems are provided at the end of each chapter. Many of the problems are based on actual activities associated with the design and operation of existing accelerators.
The authors review the application of a team-developed measurement methodology in a service knowledge worker organization. The site is a computer engineering support function (Plant Operating Systems Group, or POS) within a large utility, the Tennessee Valley Authority (TVA). A customer focus requires feedback measures for continuous improvement of service processes. Internal service functions require acknowledgement of the internal/external customer concept by the management team. The authors address these and other difficulties of group measurement development.<<ETX>>
We describe progress on a measurement of the magnetic moment of the helion in units of the Bohr magneton. An apparatus has been constructed which allows the exchange of helium-3 for atomic hydrogen in situ. Both helium-3 NMR and hydrogen atom ESR have been observed at a flux density of 0.6 T.
With the advent of digital microscopy in pathology traditional diagnostic methods are inevitably revisited and compared to arising new approaches. Image processing based solutions are developed to replace methods applied through decades. Ploidy analysis traditionally is a flow cytometry (FCM) area, but reproducing its results with computer based image processing techniques (ICM - Image Cytometry) on digitalized specimen could have a few benefits of its own. This article aims to explore the possibilities of applying image processing to this field. The process is using the type of sample used by FCM, propidium iodide stained cell nuclei. A droplet of the specimen was placed on a glass slide and digitized. We created an image processing algorithm to detect the nuclei and measure their properties to support the forming of measurement- based, objective and reproducible diagnoses. This article also introduces a simple method for quantitative validation of segmentation algorithms that helped us to prioritize the further efforts in algorithm development.
Risk is inherent in every activity taken up by human beings be it potential or obvious, it is accepted or tolerated. Risk posed due to nuclear industry has always been a cause of concern to the individual, society, government and the regulator. The Nuclear Fuel Cycle Faculty (NFCF) encompassing mining to waste management activities has been diligently associated with diversified risks. The risk management for a NFCF right from Siting stage through the De- commissioning stage has been a vital issue in the Consenting process. The regulatory decision at every stage is based on a comprehensive review and assessment of risk and the safety measures available to contain it. It is informed to the management of the NFCF as a part of review process to have a step-by step approach in identification of hazards, assessment of frequency and consequence of events and estimation of risks. This exercise shall facilitate the review and assessment process to arrive at a logical and judicious decision. The Risk based evaluation and review process is a systematic and structured method addressing various regulatory concerns and risk insights, along with other important information, to assist in making decisions. Because there are many facets of NFCF to consider (such as safety, barriers to defense in depth, design margins, techno-economic issues, etc), using a structured process can facilitate in making transparent, comprehensive, and consistent risk informed decisions. The Risk Based Informed Decision Making Process(RBIDMF) is in its evolving stage with respect to regulatory decision making functions of NFCF. The fourstep process involved in the risk information review of NFCF is detailed. The process involves submission of relevant documents and discussions with the NFCF proponents on various safety related issues. An approach model to integrate the risk information with the decision making process is presented. This concept considers the rationale of linking the perception of risk associated with activities along with the risk agreeable / acceptance criteria of the regulator. The objective of safe assessment and review is achieved through a comprehensive, strucured and systematic study of the risk associated with the activities of NFCF at various stages like Siting, Construction, Commissioning, Operation and De-Commissioning. The prognostic view of established and responsive regulatory framework ensures safe and rational decisions with the consensus and acceptance of all concerned.
The soft-error evaluation method using the nuclear microprobe has been demonstrated. This method realized the quantitative study of the charge collection which induces the soft-error event. The retrograde well structure with the double buried p/sup +/ layers was found to be more effective for the soft-error immunity of DRAMs, as compared with the conventional well structure on the p/sup -/epi/p/sup +/ substrate. These results were well proved by the simulation results. The evaluation method using high-energy nuclear microprobe gives the principle to optimize the well structure for the soft-error immunity of advanced DRAMs.
This standard serves to amplify criteria in IEEE Std 603-2009, IEEE Standard Criteria for Safety Systems for Nuclear Power Generating Stations, to address the use of computers as part of safety systems in nuclear power generating stations. The criteria contained herein, in conjunction with criteria in IEEE Std 603-2009, establish minimum functional and design requirements for computers used as components ...
Mechanical Technologist/Sr. Mechanical Technologist
Lawrence Livermore National Laboratory