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At Astatine

  • Klara Berei
  • Siegfried H. Eberle
  • H. W. Kirby
  • Helmut Münzel
  • Kurt Rössler
  • Arnulf Seidel
  • László Vasáros
  • Hans Karl Kugler
  • Cornelius Keller

Table of contents

  1. Front Matter
    Pages N2-XIII
  2. H. W. Kirby
    Pages 1-9
  3. H. W. Kirby
    Pages 10-14
  4. H. W. Kirby, K. Rössler
    Pages 95-106
  5. László Vasáros, Klara Berei
    Pages 107-128
  6. H. W. Kirby
    Pages 129-139
  7. K. Rössler
    Pages 140-156
  8. Arnulf Seidel
    Pages 157-178
  9. S. H. Eberle, Klara Berei, László Vasáros
    Pages 183-289
  10. Back Matter
    Pages 290-292

About this book

Introduction

Astatine is - besides radon and francium - the only natural radioelement which only has short-Lived isotopes, thereby excluding experiments with . . weighable" amounts of the element. This implies that all available data on physics and chemistry of this element are 12 16 based on experiments on the tracer scale with 10- to 10- g - and this will also not change in future because no longer-Lived isotopes as yet known are to be expected. Due to the fact that the only isotope of At occurring in the natural decay series, 219At, results from the 0. 005% a-branching of 223Fr which itself is produced by the only 1. 38% a-branching of 227 Ac - a member of the 235U series - there is no chance to recover substantial amounts of 219At from natural sources for sCientific research of At. All studies, therefore, are being done with the isotopes 209At to 211At having half-lives in the few hours region and being obtained by irradiation of bismuth with a-particles via (a,xn) reactions or by proton irradiation of heavy elements via spallation reactions. The mostly used isotope is 7. 22 h 211At. The fast separation of the obtained At isotopes is no very difficult procedure and is either being done by wet adsorption-precipitation techniques or making use of its high volatility by destilling in air.

Keywords

Francium Isotop adsorption bismuth chemistry reactions

Authors and affiliations

  • Klara Berei
    • 1
  • Siegfried H. Eberle
    • 2
  • H. W. Kirby
    • 3
  • Helmut Münzel
    • 4
  • Kurt Rössler
    • 5
  • Arnulf Seidel
    • 6
  • László Vasáros
    • 1
  1. 1.Central Research Institute for PhysicsHungarian Academy of SciencesBudapestHungary
  2. 2.Institut für RadiochemieUniversität Karlsruhe, and Kernforschungszentrum KarlsruheGermany
  3. 3.Mound FacilityMonsanto Research CorporationMiamisburgUSA
  4. 4.Technische Hochschule DarmstadtGermany
  5. 5.Kernforschungsanlage JülichGermany
  6. 6.Institut für Genetik und für Toxikologie von SpaltstoffenKernforschungszentrum KarlsruheGermany

Editors and affiliations

  • Hans Karl Kugler
    • 1
  • Cornelius Keller
    • 2
  1. 1.Gmelin-InstitutFrankfurt am MainGermany
  2. 2.Schule für KerntechnikKernforschungszentrum KarlsruheGermany

Bibliographic information

  • DOI https://doi.org/10.1007/978-3-662-05868-8
  • Copyright Information Springer-Verlag Berlin Heidelberg 1985
  • Publisher Name Springer, Berlin, Heidelberg
  • eBook Packages Springer Book Archive
  • Print ISBN 978-3-662-05870-1
  • Online ISBN 978-3-662-05868-8
  • Buy this book on publisher's site