INVESTIGATION OF URANIUM L-EDGES OF METAMICT AND ANNEALED BETAFITE.

R. B. Greegor; F. W. Lytle; B. C. Chakoumakos; G. R. Lumpkin; R. C. Ewing

INVESTIGATION OF URANIUM L-EDGES OF METAMICT AND ANNEALED BETAFITE.

R. B. Greegor, F. W. Lytle, B. C. Chakoumakos, G. R. Lumpkin, R. C. Ewing

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

12 Scopus citations

Abstract

The uranium site in naturally occurring metamict minerals of the pyrochlore group has been investigated using x-ray absorption spectroscopy (XAS). Pyrochlore structures are common phases in proposed polycrystalline waste forms. Betafite, a member of the pyrochlore group, exhibits U-O bond lengths of 1. 94 and 2. 37 A for the metamict state, and 2. 03 and 2. 51 A for the crystalline (annealed) state. The U-O bond lengths decrease and there is a disruption in the second nearest neighbor periodicidy as material is converted from the crystalline to the metamict state.

Original language	English
Title of host publication	Materials Research Society Symposia Proceedings
Editors	Lars O. Werme
Publisher	Materials Research Soc
Pages	387-392
Number of pages	6
ISBN (Print)	0931837154
State	Published - 1986
Externally published	Yes

Publication series

Name	Materials Research Society Symposia Proceedings
Volume	50
ISSN (Print)	0272-9172

Cite this

@inproceedings{08165eac786f40d7bc42e589dfe014c9,

title = "INVESTIGATION OF URANIUM L-EDGES OF METAMICT AND ANNEALED BETAFITE.",

abstract = "The uranium site in naturally occurring metamict minerals of the pyrochlore group has been investigated using x-ray absorption spectroscopy (XAS). Pyrochlore structures are common phases in proposed polycrystalline waste forms. Betafite, a member of the pyrochlore group, exhibits U-O bond lengths of 1. 94 and 2. 37 A for the metamict state, and 2. 03 and 2. 51 A for the crystalline (annealed) state. The U-O bond lengths decrease and there is a disruption in the second nearest neighbor periodicidy as material is converted from the crystalline to the metamict state.",

author = "Greegor, \{R. B.\} and Lytle, \{F. W.\} and Chakoumakos, \{B. C.\} and Lumpkin, \{G. R.\} and Ewing, \{R. C.\}",

year = "1986",

language = "English",

isbn = "0931837154",

series = "Materials Research Society Symposia Proceedings",

publisher = "Materials Research Soc",

pages = "387--392",

editor = "Werme, \{Lars O.\}",

booktitle = "Materials Research Society Symposia Proceedings",

}

INVESTIGATION OF URANIUM L-EDGES OF METAMICT AND ANNEALED BETAFITE. / Greegor, R. B.; Lytle, F. W.; Chakoumakos, B. C. et al.
Materials Research Society Symposia Proceedings. ed. / Lars O. Werme. Materials Research Soc, 1986. p. 387-392 (Materials Research Society Symposia Proceedings; Vol. 50).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - INVESTIGATION OF URANIUM L-EDGES OF METAMICT AND ANNEALED BETAFITE.

AU - Greegor, R. B.

AU - Lytle, F. W.

AU - Chakoumakos, B. C.

AU - Lumpkin, G. R.

AU - Ewing, R. C.

PY - 1986

Y1 - 1986

N2 - The uranium site in naturally occurring metamict minerals of the pyrochlore group has been investigated using x-ray absorption spectroscopy (XAS). Pyrochlore structures are common phases in proposed polycrystalline waste forms. Betafite, a member of the pyrochlore group, exhibits U-O bond lengths of 1. 94 and 2. 37 A for the metamict state, and 2. 03 and 2. 51 A for the crystalline (annealed) state. The U-O bond lengths decrease and there is a disruption in the second nearest neighbor periodicidy as material is converted from the crystalline to the metamict state.

AB - The uranium site in naturally occurring metamict minerals of the pyrochlore group has been investigated using x-ray absorption spectroscopy (XAS). Pyrochlore structures are common phases in proposed polycrystalline waste forms. Betafite, a member of the pyrochlore group, exhibits U-O bond lengths of 1. 94 and 2. 37 A for the metamict state, and 2. 03 and 2. 51 A for the crystalline (annealed) state. The U-O bond lengths decrease and there is a disruption in the second nearest neighbor periodicidy as material is converted from the crystalline to the metamict state.

UR - https://www.scopus.com/pages/publications/0022900607

M3 - Conference contribution

AN - SCOPUS:0022900607

SN - 0931837154

T3 - Materials Research Society Symposia Proceedings

SP - 387

EP - 392

BT - Materials Research Society Symposia Proceedings

A2 - Werme, Lars O.

PB - Materials Research Soc

ER -

INVESTIGATION OF URANIUM L-EDGES OF METAMICT AND ANNEALED BETAFITE.

Abstract

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