sodium iodide simulations

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An experiment to search for dark-matter interactions using ...

A cut-out view of the detector is shown in Extended Data Fig. 1. It consists of an array of eight sodium iodide 'NaI (Tl)' scintillating crystals (total mass of 106 kg) immersed in …

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3D Simulation of Cell Design Influences on Sodium-Iodine ...

elemental sodium oxidizes to sodium ions, while iodine is reduced to iodide at a standard potential of 3.2495V. 2Naþ þ 2I ⇄ I 2 þ 2Na (1) The half-cell reaction for the negative electrode states Naþ þ e ⇄ Na (2) at standard potential 2.714V against hydrogen electrode, while it is 2I ⇄ I 2 þ 2e (3) for the positive half-cell (E ¼0 ...

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NaI (Tl) Sodium Iodide Scintillation Detectors | Berkeley ...

Fast response with high sensitivity tells the operator that this is the right time and place to make a measurement. A 2x2 inch sodium iodide (NaI) detector will allow the user to identify the presence of Cs137 at < 1 urem/hr/sec. The 3x3 inch NaI detector can identify Cs137 at 500 nrem/hr/sec. This is why BNC's SAM III generation and SAM 940 ...

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Optimization of the Monte Carlo simulation model of …

Thallium-activated sodium iodide crystal, NaI(Tl), was invented in 1948 (Hofstadter, 1949). It has been widely used in many fields, especially in industries (Tam et al., 2015, Thanh et al., 2015) and radiological protection. This type of detector has the advantage of operating at room temperature with high detection efficiency.

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Elephant's Toothpaste | Imagination Station

The sodium iodide reacts with the hydrogen peroxide (H 2 O 2) by removing an oxygen atom. This essentially produces water and oxygen gas (H 2 O + O2). The oxygen gas produced gets trapped in the soap which produces the big ball of . The reaction produces oxygen gas, water and iodine. That is why the has a yellow color.

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Three‐dimensional Simulation of Cell Design Influences on ...

This publication deals with the spatially resolved simulation of a sodium‐iodine secondary battery. The anode compartment consists of molten sodium and the cathode compartment contains a high‐conductivity metal disc as electrode and an aqueous catholyte. The latter comprises iodide, triiodide, dissolved iodine, and sodium ions.

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Modeling Sodium Iodide Detector Response Using a ...

response without running lengthy Monte Carlo simulations. This research utilizes the relationship between source location, background radiation and detector placement to quantify an expected detector response from a 3x3 sodium iodide gamma detector. A parametric equation is

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The Influence of Sodium Iodide Salt on the Interfacial ...

Here, the molecular dynamics (MD) simulations and sum frequency generation vibrational spectroscopy (SFG-VS) were carried out to investigate the influence of sodium iodide (NaI) on the air/liquid interfaces of the methanol–water mixtures. The SFG-VS spectral intensities were discovered to increase with the addition of 3 M NaI, while the ...

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(PDF) ISOCS characterization of sodium iodide detectors ...

sodium iodide crystal size can be applied to ot her sodium . ... Measurements and Monte Carlo simulations have been used to determine the optimal conditions of measurement in gamma-ray ...

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What is the balanced chemical equation for chlorine and ...

Sodium iodide is an iodide salt that is formed into an injectable medicine. Sodium iodide is used to treat or prevent iodine deficiency caused by poor nutrition or poor absorption by the body. Sodium iodide may also be used to treat a thyroid disorder.

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(PDF) Modeling and simulation analysis of propyl ...

Modeling and simulation analysis of propyl-thiouracil (PTU), an anti-thyroid drug on thyroid peroxidase (TPO), thyroid stimulating hormone receptor (TSHR), and sodium iodide (NIS) symporter based on systems biology approach Manish Kumar Gupta & Krishna Misra Network Modeling Analysis in Health Informatics and Bioinformatics ISSN 2192-6662 Volume 2 …

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(PDF) Sodium Iodide as a Contrast Agent for X-ray Micro-CT ...

However, sodium iodide was not an ideal contrast agent because it swelled wood particles, closed interfacial voids, and partially dissolved ZB particles. ...

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The Iodine Treatment of Water to Prevent Goiter - Fire ...

As prepared sodium iodide will contain from 5 to 6 per cent, of water, and the average purity of the salt will run over 99 per cent, sodium iodide (Nal). …

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Detector Simulation Projects | Lew Riley

… is a Geant4 simulation of the Bicron 2M2 sodium iodide (NaI) scintillator detectors we use in our advanced laboratory courses for gamma-ray spectroscopy and cosmic-ray observation. Ray Saunders collected source spectra and ran UCNaI simulations in Spring 2021. The simulations systematically over-predict the efficiencies.

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Modeling Sodium Iodide Detector Response Using a ...

detailed Monte Carlo simulation models can be used to quickly produce expected detector response without running lengthy Monte Carlo simulations. This research utilizes the relationship between source location, background radiation and detector placement to quantify an expected detector response from a 3x3 sodium iodide gamma detector.

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Solute transport in porous media studied by lattice ...

Plumes of nonreactive sodium iodide solution were point injected into a sodium chloride solvent as a tracer for the eval … Solute transport in porous media studied by lattice Boltzmann simulations at pore scale and x-ray tomography experiments Phys Rev E. 2019 Dec ...

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SODIUM IODIDE I 131 CAPSULES THERAPEUTIC safely and

sodium iodide I-131. Sodium iodide I-131 capsules may contain sodium bisulfite, a sulfite that may cause allergic-type reactions, including anaphylactic symptoms and life-threatening or less severe asthmatic episodes. The overall prevalence of sulfite sensitivity in the general population is unknown and probably low.

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Molecular dynamics simulations of ion clustering and ...

Model systems of sodium iodide dissolved in dimethyl ether were studied in order to investigate the structural and dynamic properties of ionic solutions in small and polymeric ethers having low dielectric constants. Full molecular dynamics simulations were performed at ion charges ranging from 0.5 to 0.1 e, and an algorithm designed to assign ...

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Sodium Iodide – Uses, Physical and Chemical Properties

Sodium iodide is a salt that is formed by the ionic reaction of sodium metal and iodine. The sodium iodide formula is NaI. Under standard conditions, it is a white, soluble solid which includes a 1:1 blend of sodium cations (Na+) and iodide anions (I−) in a lattice grid.

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Sodium iodide | NaI - PubChem

Sodium iodide is a water -soluble ionic compound with a crystal lattice. Sodium iodide is a source of iodine and can be administered as a supplement for total parenteral nutrition but is more commonly used in veterinary medicine. Radiolabelled compound, [DB09293], is used as a diagnostic tool to evaluate thyroid function and morphology.

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NaI-Crystal-Halide-Crylink

Sodium iodide can be used both as single crystals and as polycrystals for this purpose. The iodine provides most of the stopping power in sodium iodide (since it has a high Z = 53). These crystalline scintillators are characterized by high density, high atomic number, and pulse decay times of approximately 1 microsecond (~ 10 -6 sec).

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(PDF) Monte Carlo simulation of GM probe and NaI detector ...

Two methods based on Monte Carlo simulations are used: one for a Geiger-Muller (GM) ionisation probe and the other for sodium iodide (NaI) detector with …

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Journal of Physics: Conference Series PAPER OPEN ACCESS ...

Sensitivity of sodium iodide cryogenic scintillation-phonon detectors to WIMP signals M Clark1, P Nadeau1, P C F Di Stefano1, J-C Lanfranchi2, S Roth1, M von Sivers3 and I Yavin4 1 Department of Physics, Engineering Physics & Astronomy, Queens University, Kingston, Ontario, Canada, K7L 3N6 2 Physik-Department E15, Technische Universit at Munc hen, Garching, …

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Sodium Iodide - Structure, Properties, Uses of NaI

Sodium iodide is an ionic compound produced by the addition of sodium hydroxide or sodium carbonate to hydriodic acid. The chemical formula for sodium iodide is NaI. It is made up of colourless cubic crystals that are soluble in polar solvents. It is one of the oldest members of the optical engineering family and is considered by many ...

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The Sodium/Iodide Symporter (NIS): Molecular Physiology ...

THE IMPORTANCE OF ADEQUATE IODIDE INTAKE AND THYROID HORMONE BIOSYNTHESIS. I − is a micronutrient essential for human health because it plays a crucial role in TH biosynthesis. In humans, an adequate supply of I − at the very beginning of life is critical for preventing I − deficiency disorders (IDDs) that can lead to severe and irreversible …

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How Do Sodium Iodide (Scintillation) Detectors Work?

This graphic, which is for a sodium iodide scintillation detector, show that the meter will show only half the actual dose rate if the radiation is from a Co-60 source, but will over-respond by a factor of 6 or 7 if the radiation is coming from the …

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Sodium iodide - Wikipedia

Sodium iodide (chemical formula NaI) is an ionic compound formed from the chemical reaction of sodium metal and iodine.Under standard conditions, it is a white, water-soluble solid comprising a 1:1 mix of sodium cations (Na +) and iodide anions (I −) in a crystal lattice.It is used mainly as a nutritional supplement and in organic chemistry.It is produced industrially as the salt formed …

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Salt-specific stability and denaturation of a short salt ...

The structure of a single alanine-based Ace-AEAAAKEAAAKA-Nme peptide in explicit aqueous electrolyte solutions (NaCl, KCl, NaI, and KF) at large salt concentrations (3-4 M) is investigated using approximately 1 mus molecular dynamics (MD) computer simulations. The peptide displays 71% alpha-helical …

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Simulating the Light Distribution in Sodium Iodide Detectors

Simulating the Light Distribution in Sodium Iodide Detectors Lisi Goodlett Dr. Ingo Wiedenhöver STRIPSI Detector System Contains twenty-four sodium iodide detectors, in two concentric rings around the experiment. Sodium Iodide Detectors Current Method of Calibration Based on an exponential attenuation of light.

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Modeling Study of Proposed Field Calibration Source Using ...

A gamma ray calibration source is thus proposed that uses potassium chloride salt and a high-Z metal to create a two-point calibration for a sodium iodide field gamma spectroscopy instrument. The calibration source was designed in collaboration with Sandia National Laboratory using the Monte Carlo N-Particle eXtended (MCNPX) transport code.

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Monte Carlo simulations of NaI(Tl) spectra for ...

For the past 10 y Health Canada has operated a Fixed Point Surveillance Network of NaI(Tl) detectors across Canada. Deployed for both emergency response and daily monitoring of airborne radiation in the environment, a spectral stripping method allowed measurement of certain isotopes well below the a …

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The Sodium Iodide Symporter (NIS): Regulation and ...

1. Introduction. Sodium iodide symporter (NIS, or SLC5A5, solute carrier family 5, member 5)(Dai et al., 1996; Smanik et al., 1997) is expressed at the highest level in the thyroid and lactating breast (Dohan et al., 2003).Since NIS confers highly efficient iodide accumulation in cells, its expression in cancer cells allows for the diagnostic and therapeutic application of …

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Photocatalytic decarboxylative alkylations mediated by ...

Simulations of charge transfer energetics. Sodium iodide is known to reduce aryl bromide and triflate to the respective aryl radicals for the aromatic Finkelstein reaction, but only under high-energy ultraviolet (UV) irradiation (27, 28).

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