• cesium Description, Symbol, Uses, Facts Britannica

    Cesium, chemical element of Group 1 (also called Group Ia) of the periodic table, the alkali metal group, and the first element to be discovered spectroscopically (1860), by German scientists Robert Bunsen and Gustav Kirchhoff, who named it for the unique blue lines of

  • Caesium - Wikipedia

    Caesium (IUPAC spelling) (also spelled cesium in American English) is a chemical element with the symbol Cs and atomic number 55. It is a soft, silvery-golden alkali metal with a melting point of 28.5 °C (83.3 °F), which makes it one of only five elemental metals that are liquid at or near room temperature.

  • Pronunciation: /ˈsiːziəm/ ​(SEE-zee-əm)
  • Caesium-137 - Wikipedia

    Caesium-137 (137 55 Cs), or radiocaesium, is a radioactive isotope of caesium which is formed as one of the more common fission products by the nuclear fission of uranium-235 and other fissionable isotopes in nuclear reactors and nuclear weapons.Trace quantities also originate from natural fission of uranium-238.It is among the most problematic of the short-to-medium-lifetime fission products ...

  • Name, symbol: Caesium-137,¹³⁷Cs
  • The Cesium Chloride Protocol thewolfeclinic

    Ionic cesium chloride works by making cancer cells highly alkaline, typically 8.0 and above, thus killing the cancer cell. Cesium chloride not only kills cancer cells, but it immediately stops the metastasis of the cancer, can shrink tumor masses within weeks, and almost always stops the

  • Animation - Cesium Documentation

    Cesium typically treats time as continuous (not broken into pre-defined animation frames), so this widget offers no jog wheel. Instead, the shuttle ring is capable of both fast and very slow playback. Click and drag the shuttle ring pointer itself (shown above in green), or click in the rest of the ring area to nudge the pointer to the next ...

  • 3D Models cesium

    3D Models. This tutorial will teach you how to convert, load, and use 3D Models in Cesium via the Primitive API. If you’re new to Cesium, you might want to check out the 3D Models section of the Visualizing Spatial Data tutorial instead.. Cesium supports 3D models, including key-frame animation, skinning, and individual node picking, using glTF, an emerging industry-standard format for 3D ...

  • Cesium - USGS

    cesium could be extracted, usually as a byproduct. Deposits of these ores, which are primarily ores of lithium and the other alkali metals, were identified in several countries which included the United States. The element found no significant application until it was used in

  • will Cesium form a cation or an anion? Yahoo Answers

    Mar 24, 2007  Firstly, Casium is Element 55 in the periodic table with mass number 133 and atomic number 55. For all the elements in the s orbital (Those from Group 1 and 2), they are all metals.

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  • Nuclear Gauge Safety Certification Course Flashcards Quizlet

    Start studying Nuclear Gauge Safety Certification Course. Learn vocabulary, terms, and more with flashcards, games, and other study tools. ... The exposure limit for a declared pregnant worker during the pregnancy is typically: 500 millirem. ... The activity/quantity of Cesium 137 in a new gauge typically is:

  • Caesium - Element information, properties and uses ...

    A vertical column in the periodic table. Members of a group typically have similar properties and electron configurations in their outer shell. Period A horizontal row in the periodic table. The atomic number of each element increases by one, reading from left to right. Block

  • Cesium - USGS

    cesium could be extracted, usually as a byproduct. Deposits of these ores, which are primarily ores of lithium and the other alkali metals, were identified in several countries which included the United States. The element found no significant application until it was used in

  • Cs Cesium - PubChem

    To obtain pure cesium, cesium and rubidium ores are crushed and heated with sodium metal to 650°C, forming an alloy that can then be separated with a process known as fractional distillation. Metallic cesium is too reactive to easily handle and is usually sold in the form of cesium azide (CsN 3). Cesium is recovered from cesium azide by ...

  • Chapter 5 Flashcards Quizlet

    Start studying Chapter 5. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Search. ... Why are samples of the alkali metal cesium usually stored in argon gas? Cesium is an extremely reactive metal; argon is an extremely unreactive nonmetal. ...

  • It's Elemental - The Element Cesium

    Metallic cesium is too reactive to easily handle and is usually sold in the form of cesium azide (CsN 3). Cesium is recovered from cesium azide by heating it. Cesium has the second lowest melting point of all metallic elements, which limits its uses.

  • What is Cesium? - Uses, Facts Properties Study

    What is Cesium? Think back to a typical science fiction movie that depicts a radioactive substance. It is typically shown as a silvery liquid that is shiny and kind of runny.

  • ATSDR - Public Health Statement: Cesium

    Jan 21, 2015  Cesium compounds do not react violently with air or water and are generally very soluble in water. The most important source of commercial cesium is a mineral known as pollucite, which usually contains about 5–32% cesium oxide (Cs2O). No known taste or odor is associated with cesium

  • Billboard - Cesium Documentation

    Gets or sets the 3D Cartesian offset applied to this billboard in eye coordinates. Eye coordinates is a left-handed coordinate system, where x points towards the viewer's right, y points up, and z points into the screen. Eye coordinates use the same scale as world and model coordinates, which is typically meters.

  • Selecting a Primary Frequency Standard for a Calibration ...

    cost of a cesium. They typically cost at least $30,000 per unit, and their beam tubes eventually run out of cesium, typically after about 10 years. [8] The cost of replacing a beam tube is often about half the purchase price of the cesium itself, so the cost of ownership is high compared to other standards. Figure 3 shows the daily frequency

  • Formate Brines Clear Brine Fluids TETRA Technologies, Inc.

    Single salt formate fluid blends are brines composed of only one salt. Densities typically range from slightly above the density of water such as 8.4 ppg sodium formate solution to 19.2 lb/gal cesium formate solution. Sodium Formate (NaCOOH) Used in solution as a solid-free completion fluid, where densities of 8.4 to 11.0 lb/gal are required.

  • 5 SELF-CONTAINED IRRADIATORS Radiation Source Use and ...

    Most self-contained irradiators use a radionuclide radiation source, with the vast majority being cesium-137 because of its long half-life, relatively low cost, and relatively modest shielding requirements, which make it possible to place a device in the upper floors of some hospitals and blood banks.

  • The Scintillator Question: Gadox vs Cesium - SOUND ...

    Jul 31, 2018  Gadox is usually produced in a “chemical” way whereas Cesium is “grown”. There is obviously plenty of chemistry in both techniques, but Gadox is typically mixed in powder form with a liquid epoxy to a uniform concentration and “poured” into thin sheets where it hardens to form a layer with precise thickness.

  • Simpro-scene cesiumjs.org

    Dec 12, 2018  Currently, this typically involves showing the observer’s view of the surrounding world from a specified side of a moving object, such as a train, that is a part of a complex spatial process. A special web server for Cesium works in Protege and passes the necessary data to the Cesium

  • Cesium - an overview ScienceDirect Topics

    The frequency offset is typically near 1 × 10 −12 after a warm-up period of 30 minutes. The current state-of-the-art in cesium technology is the cesium fountain oscillator, named after its fountain-like movement of cesium atoms. A cesium fountain named NIST-F1 serves as the primary standard of time and frequency for the United States.

  • Cesium Toxicity - chelationmedicalcenter

    Cesium is a naturally-occurring element found in rocks, soil and dust at low concentrations. It is present in the environment only in the stable form of 133 Cesium (the radioactive isotopes 134 Cesium and 137 Cesium are usually not measured or reported).

  • The Scintillator Question: Gadox vs Cesium - SOUND ...

    Jul 31, 2018  Gadox is usually produced in a “chemical” way whereas Cesium is “grown”. There is obviously plenty of chemistry in both techniques, but Gadox is typically mixed in powder form with a liquid epoxy to a uniform concentration and “poured” into thin sheets where it hardens to form a layer with precise thickness.

  • Simpro-scene cesiumjs.org

    Dec 12, 2018  Currently, this typically involves showing the observer’s view of the surrounding world from a specified side of a moving object, such as a train, that is a part of a complex spatial process. A special web server for Cesium works in Protege and passes the necessary data to the Cesium

  • Cesium Toxicity - chelationmedicalcenter

    Cesium is a naturally-occurring element found in rocks, soil and dust at low concentrations. It is present in the environment only in the stable form of 133 Cesium (the radioactive isotopes 134 Cesium and 137 Cesium are usually not measured or reported).

  • Cesium Minerals Education Coalition

    Only a few thousand kilograms of cesium are used each year. A number of minerals contain significant amounts of cesium, including mica, beryl, feldspar, petalite, and pollucite, which is the mineral it is usually mined from. Relation to Mining. Most cesium is processed from the mineral pollucite, which is found in pegmatites.

  • Facts About Cesium Live Science

    Cesium is a rare, silver-white, shiny metal with brilliant blue spectral lines; the element's name comes from "caesius," a Latin word meaning "sky blue." It is the softest metal, with a ...

  • Cesium - an overview ScienceDirect Topics

    The frequency offset is typically near 1 × 10 −12 after a warm-up period of 30 minutes. The current state-of-the-art in cesium technology is the cesium fountain oscillator, named after its fountain-like movement of cesium atoms. A cesium fountain named NIST-F1 serves as the primary standard of time and frequency for the United States.

  • Cesium Toxicity - Chelation Community

    Jul 04, 2018  This makes it one of only five elemental metals that are liquid at or near room temperature. It is a naturally-occurring element found in rocks, soil and dust at low concentrations. It is present in the environment only in the stable form of 133 Cesium (the radioactive isotopes 134 Cesium and 137 Cesium are usually not measured or reported).

  • Cesium - Periodic Table of Elements and Chemistry

    Cesium is an extremely reactive metal and the most alkaline of the elements. It reacts explosively upon contact with water producing cesium hydroxide (CsOH), an extremely strong base that can rapidly corrode glass. Uses of Cesium. Cesium is used in atomic clocks, which are incredibly accurate.

  • OPTICALLY PUMPED CESIUM-BEAM FREQUENCY STANDARD

    other features typically found on high-performance commercial cesium-beam frequency standards, including a 48-bit direct digital synthesizer (DDS) and a sophisticated RF system. The microprocessor allows for sophisticated lock acquisition and servo algorithms, as well as supporting comprehensive state- of-health monitoring and telemetry.

  • NIST-F1 Cesium Fountain Atomic Clock

    NIST-F1, the nation's primary time and frequency standard, is a cesium fountain atomic clock developed at the NIST laboratories in Boulder, Colorado. NIST-F1 contributes to the international group of atomic clocks that define Coordinated Universal Time (UTC), the official world time. Because NIST-F1 ...

  • Transitioning isotopes for prostate brachytherapy: Dr ...

    Feb 13, 2019  “Told they might be worse in the short-term, our patients’ acute side effects are about the same and diminish significantly and much more quickly with Cesium, usually

  • CESIUM ATOMIC CLOCKS - tycho.usno.navy.mil

    A "cesium(-beam) atomic clock" (or "cesium-beam frequency standard") is a device that uses as a reference the exact frequency of the microwave spectral line emitted by atoms of the metallic element cesium, in particular its isotope of atomic weight 133 ("Cs-133").

  • Does the chemical symbol Cs stand for Caesium or Cesium ...

    Sep 12, 2011  Best Answer: As both a novice linguist and chemist I would have to say that Cs can stand for either spelling: Caesium or Cesium. The more common one is Cesium I believe. Sometimes an "a" is added because the word is derived from Greek and the British find

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  • NIST Cesium Fountains Current Status and Future Prospects

    steps. See figure 1 for a schematic diagram of a typical cesium fountain. First a sample of cesium atoms (typically ~10 7 atoms) is captured in either an optical mola sses or a magneto-optical trap (MOT), next the sample of cesium atoms is launched vertically by detuning the

  • CESIUM ATOMIC CLOCKS - tycho.usno.navy.mil

    A "cesium(-beam) atomic clock" (or "cesium-beam frequency standard") is a device that uses as a reference the exact frequency of the microwave spectral line emitted by atoms of the metallic element cesium, in particular its isotope of atomic weight 133 ("Cs-133").

  • NIST Cesium Fountains Current Status and Future Prospects

    steps. See figure 1 for a schematic diagram of a typical cesium fountain. First a sample of cesium atoms (typically ~10 7 atoms) is captured in either an optical mola sses or a magneto-optical trap (MOT), next the sample of cesium atoms is launched vertically by detuning the

  • Cesium - an overview ScienceDirect Topics

    The frequency offset is typically near 1 × 10 −12 after a warm-up period of 30 minutes. The current state-of-the-art in cesium technology is the cesium fountain oscillator, named after its fountain-like movement of cesium atoms. A cesium fountain named NIST-F1 serves as the primary standard of time and frequency for the United States.

  • Agilent 5071A Primary Frequency Standard Unsurpassed ...

    Agilent 5071A Primary Frequency Standard Unsurpassed Stability in the Lab or Field Product Overview. 2 Accuracy and stability • Standard Cesium Beam Tube Accuracy: ±1 3 10-12 Environmental Stability: <1 3 10-13 frequency change ... flicker floor is typically better than 5 3 10-15. Unstable environments are normal for many cesium standard ...

  • Samples Containing Lithium, Sodium, Potassium, Rubidium or ...

    Potassium, rubidium and cesium ignite when placed on water. The resulting alkali hydroxides are very soluble in water and are essentially completely dissociated in aqueous solution. Typically, analysts prefer to introduce neutral or acidic solutions of these elements to avoid attack of the glass and quartz introduction components of their ...

  • Time and Frequency from A to Z, C to Ce NIST

    Time and Frequency from A to Z, C to Ce ... the smallest uncertainties and highest resolution are made using satellite signals where the carrier frequencies are typically much higher. Cesium Beam Oscillator. Cesium oscillators can be primary frequency standards since the SI second is defined from the resonance frequency of ...

  • Does the chemical symbol Cs stand for Caesium or Cesium ...

    Sep 12, 2011  Best Answer: As both a novice linguist and chemist I would have to say that Cs can stand for either spelling: Caesium or Cesium. The more common one is Cesium I believe. Sometimes an "a" is added because the word is derived from Greek and the British find

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  • alkali metal Definition, Properties, Facts ...

    Alkali metal, any of the six elements of Group 1 (Ia) of the periodic table—lithium, sodium, potassium, rubidium, cesium, and francium. The alkali metals are so called because reaction with water forms alkalies (i.e., strong bases capable of neutralizing acids).

  • 5. PRODUCTION, IMPORT/EXPORT, USE, AND DISPOSAL

    CESIUM 119 5. PRODUCTION, IMPORT/EXPORT, USE, AND DISPOSAL 5.1 PRODUCTION Cesium is the rarest of the naturally occurring alkali metals, ranking 40 th. in elemental abundance. Although it is widely distributed in the earth’s crust, cesium is found at relatively low concentrations.

  • Cerium - Element information, properties and uses ...

    A vertical column in the periodic table. Members of a group typically have similar properties and electron configurations in their outer shell. Period A horizontal row in the periodic table. The atomic number of each element increases by one, reading from left to right. Block

  • USE OF CESIUM CHLORIDE TO CURE MALIGNANCIES - News

    Jun 29, 2004  USE OF CESIUM CHLORIDE TO CURE MALIGNANCIES . By Dr. James Howenstine, MD. June 29, 2004 NewsWithViews. Nobel Prize Laureate, Dr. Otto Warburg, discovered that when he lowered the oxygen levels of tissues by 35 % for 48

  • License Application Guide - APNGA

    The information will include the radioactive materials, typically Cesium 137 and Americium 241. The physical or chemical form is “sealed source” and usually includes a drawing number. The quantities are usually 9-10 millicuries for Cesium 137 and 40-50 millicuries for Americium 241. The quantities should be spelled out on the certificate.

  • CESIUM definition in the Cambridge English Dictionary

    cesium meaning: US spelling of caesium. Learn more.

  • Facts About Rubidium Live Science

    Rubidium is a silvery-white and very soft metal — and one of the most highly reactive elements on the periodic table. Rubidium has a density about one and a half times that of water and is solid ...


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