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americium
Americium Informationen, einschließlich Technische Daten, Safety Data und seine Eigenschaften, Forschung, Anwendungen und andere nützliche Fakten sind erörtert werden. Wissenschaftliche Fakten, wie die atomare Struktur, Ionisierungenergie, Fülle auf der Erde, Leitfähigkeit und thermischen Eigenschaften sind im Preis inbegriffen.

 

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Americium ist ein Block F, Gruppe 3, Periode 7 Element. Die elektronische Konfiguration [Rn] 5f7 7s2. In seiner elementaren Form Americium's CAS-Nummer ist 7440-35-9. Die Americium Atom hat einen Radius von 173.pm und es ist, Van der Waals Radius ist 200.pm.

Americium entdeckt wurde von Glenn T. Seaborg, Ralph A. James, Stanley G. Thompson und Albert Ghiorso 1944.

 

 

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Americium Safety Data. The safety data for americium metal, nanoparticles and its compounds can vary widely depending on the form. For potential hazard information, toxicity, and road, sea and air transportation limitations, such as DOT Hazard Class, DOT Number, EU Number, NFPA Health rating and RTECS Class, please see the specific material or compound referenced in the left margin.

Ionisation Energie. Die Ionisierungenergie für americium (die am wenigsten Energie benötigt, um ein einzelnes Elektron aus dem Atom in seinem Grundzustand in der Gasphase) ist in der folgenden Tabelle dargestellt:

1st Ionization Energy
576.39 kJ mol-1
2nd Ionization Energy
- kJ mol-1
3rd Ionization Energy
- kJ mol-1

Conductivity. As to americium's electrical and thermal conductivity, the electrical conductivity measured in terms of electrical resistivity @ 20 ºC is 68 µOcm and its electronegativities (or its ability to draw electrons relative to other elements) is -. The thermal conductivity of americium is 10 W m-1 K-1.

Thermal Properties of Americium. The melting point and boiling point for americium are stated below. The following chart sets forth the heat of fusion, heat of vaporization and heat of atomization.

Heat of Fusion
14.4 kJ mol-1
Heat of Vaporization
238.5 kJ mol-1
Heat of Atomization
266 kJ mol-1



 
Formula Atomic Number Molecular Weight Electronegativity (Pauling) Density Melting Point
Boiling Point
Vanderwaals radius
Ionic radius Energy of first ionization
Am 95 243  g.mol -1 1.3 12 g/L 1176 °C 2011 °C .200 nm 173 pm 576.39 kJ.mol-1

PRODUCT CATALOG German Operations Submicron & Nanopowder Tolling Ultra High Purity Sputtering Target Crystal Growth Rod, Plate, Powder, etc. Foil
 
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Recent Research & Development for Americium



  • Allometric methodology for the calculation of biokinetic parameters for marine biota. Sci Total Environ. 2007 Sep 17; [Epub ahead of print]

  • MONTE CARLO MODELLING FOR IN VIVO MEASUREMENTS OF AMERICIUM IN A KNEE VOXEL PHANTOM: GENERAL CRITERIA FOR AN INTERNATIONAL COMPARISON. Radiat Prot Dosimetry. 2007 Sep 11; [Epub ahead of print]

  • Comparative biokinetics of trivalent radionuclides with similar ionic dimensions: promethium-147, curium-242 and americium-241. Radiat Res. 2007 Sep;168(3):327-31.

  • MONTE CARLO SIMULATION OF THE OPERATIONAL QUANTITIES AT THE REALISTIC MIXED NEUTRON-PHOTON RADIATION FIELDS CANEL AND SIGMA. Radiat Prot Dosimetry. 2007 Jun 19; [Epub ahead of print]

  • Development of 241Am lung monitoring system using an imaging plate. Health Phys. 2007 Jul;93(1):28-35.

  • STUDY OF THE U/Am SEPARATION WITH SUPPORTED CALIX[6]ARENE IN THE AIM OF URINARY ACTINIDES ANALYSIS. Radiat Prot Dosimetry. 2007 Jun 11; [Epub ahead of print]

  • SURFACE-SEEKING RADIONUCLIDES IN THE SKELETON: CURRENT APPROACH AND RECENT DEVELOPMENTS IN BIOKINETIC MODELLING FOR HUMANS AND BEAGLES. Radiat Prot Dosimetry. 2007 Jun 10; [Epub ahead of print]

  • SOME ELEMENTS FOR A REVISION OF THE AMERICIUM REFERENCE BIOKINETIC MODEL. Radiat Prot Dosimetry. 2007 Jun 8; [Epub ahead of print]

  • TREATMENT OF HUMAN CONTAMINATION WITH PLUTONIUM AND AMERICIUM: WOULD ORALLY ADMINISTERED Ca- OR Zn-DTPA BE EFFECTIVE? Radiat Prot Dosimetry. 2007 Jun 7; [Epub ahead of print]

  • Origin and release date assessment of environmental plutonium by isotopic composition. Anal Bioanal Chem. 2007 Oct;389(3):725-32. Epub 2007 Jun 7.

  • DEVELOPMENT AND APPLICATION OF ANTHROPOMORPHIC VOXEL PHANTOM OF THE HEAD FOR IN VIVO MEASUREMENT. Radiat Prot Dosimetry. 2007 May 25; [Epub ahead of print]

  • Constraints on the use of anthropogenic radionuclide-derived chronologies for saltmarsh sediments. J Environ Radioact. 2007;95(2-3):126-48. Epub 2007 May 9.

  • Complexation studies with lanthanides and humic acid analyzed by ultrafiltration and capillary electrophoresis-inductively coupled plasma mass spectrometry. J Chromatogr A. 2007 Aug 3;1159(1-2):75-80. Epub 2007 Mar 30.

  • Gamma-ray detection efficiency of the microchannel plate installed as an ion detector in the low energy particle instrument onboard the GEOTAIL satellite. Rev Sci Instrum. 2007 Mar;78(3):034501.

  • Fluctuating valence in a correlated solid and the anomalous properties of delta-plutonium. Nature. 2007 Mar 29;446(7135):513-6.

  • Application of inductively coupled plasma sector field mass spectrometry for low-level environmental americium-241 analysis. Anal Chim Acta. 2007 Mar 28;587(2):165-9. Epub 2007 Jan 30.

  • WORLDWIDE BIOASSAY DATA RESOURCES FOR PLUTONIUM/AMERICIUM INTERNAL DOSIMETRY STUDIES. Radiat Prot Dosimetry. 2007 Apr 22; [Epub ahead of print]

  • Quantification of actinide alpha-radiation damage in minerals and ceramics. Nature. 2007 Jan 11;445(7124):190-3.

  • The structures and optical spectra of hydrated transplutonium ions in the solid state and in solution. Angew Chem Int Ed Engl. 2007;46(6):919-22. No abstract available.

  • Effect of low-level alpha-radiation on bioluminescent assay systems of various complexity. Photochem Photobiol Sci. 2007 Jan;6(1):67-70. Epub 2006 Dec 8.

 

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