Americium and Curium Chemistry and Technology: Papers from a by Dr. Glenn T. Seaborg (auth.), Norman M. Edelstein, James D. PDF

By Dr. Glenn T. Seaborg (auth.), Norman M. Edelstein, James D. Navratil, Wallace W. Schulz (eds.)

ISBN-10: 9400954441

ISBN-13: 9789400954441

ISBN-10: 9401089043

ISBN-13: 9789401089043

The papers incorporated during this quantity have been provided on the symposium on "Americium and Curium Chemistry and know-how" on the foreign Chemical Congress of Pacific Basin Societies in Honolulu, Hawaii, December 16-21, 1984. This symposium honored 40 years of study on americium and curium. for this reason, the papers integrated during this quantity start with historic views at the discovery of americium and curium and the early characterization in their chemical houses, after which hide quite a lot of topics, corresponding to thermodynamic houses, digital constitution, nuclear reactions, analytic chemistry, excessive strain section transitions, and technological points. hence, this quantity is a evaluation of the chemistry of americium and curium, and gives a viewpoint at the present study on those components 40 years after their discovery. The editors want to thank the contributors during this symposium for his or her contributions. it's a excitement to recognize the help of Ms. Barbara Moriguchi in dealing with the executive features of the symposium and of the creation of this quantity. April 2, 1985 Norman M. Edelstein fabrics and Molecular examine department Lawrence Berkeley Laboratory collage of California Berkeley, California 94720, U.S.A. James D. Navratil Rockwell overseas Rocky apartments Plant P.O. field 464 Golden, Colorado 80402-0464, U.S.A. Wallace W. Schulz Rockwell Hanford P.O. field 800 Richland, Washington 99352, U.S.A.

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Additional resources for Americium and Curium Chemistry and Technology: Papers from a Symposium given at the 1984 International Chemical Congress of Pacific Basin Societies, Honolulu, HI, December 16–27, 1984

Sample text

Americium is sorbed from waste effluents by inorganic ion exchangers containing zirconium 30 20 YEARS RESEARCH AT THE EUROPEAN INSTITUTE FOR TRANSURANJUM ELEMENTS - 241Am of Am 41 Mossbauer sources of high resolution are prepared by deposition vapour 31 FUTURE WORK Future work will include the continuation and extension of high pressure techniques for both synthesis and investigation of amer~c~um and curium containing systems. The growth of single crystqls that are sufficiently large for physical measurements of binary americium and curium compound systems will be attempted.

The measurement of the reversible couple, Am(V)/Am(VI), 5. The achievement of Am(VI) by high acid disproportionation of Am(V), 6. Preliminary values of the second order rate constant for the disproportionation of Am(V). 7. The failure to observe an absorption feature which was ascribable to aqueous Am(IV). AMERICIUM, ITS EARLY HISTORY AND GRAM-SCALE SEPARATION- 29 The reac~ion involving ~he dispropor~iona~ion of Am(V) was shown ~o be second order in Am(V). This reac~ion ~hus implied ~he forma~ion of bo~h Am(IV) and Am(VI): 2 Am(V) = Am(VI) + Am(IV) Am(VI) was observed, only ~he absorp~ion spec~ra ~wo known species, Am(III) and Am(V) were ever presen~.

It may actually be much lower than predicted by Kleinschmidt and coworkers because, although Lr is trivalent in aqueous solution, the electronic configuration of the metal may be different from what would be predicted on the basis of analogy with Lu. Strong relativistic effects in the Lr region will definitely stabilize the 7s 2 closed shell more than the 6s 2 closed shell in Lu, and they also could cause the replacement of the expected 6d electron, which is very interactive, with a 7Pl/2 electron, which is relatively inert.

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Americium and Curium Chemistry and Technology: Papers from a Symposium given at the 1984 International Chemical Congress of Pacific Basin Societies, Honolulu, HI, December 16–27, 1984 by Dr. Glenn T. Seaborg (auth.), Norman M. Edelstein, James D. Navratil, Wallace W. Schulz (eds.)


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