BE-10 IN BAUXITE AND COMMERCIAL ALUMINUM

Authors
MIDDLETON R KLEIN J DEZFOULYARJOMANDY B ALBRECHT A XUE S HERZOG GF GREGORY J
Citation
R. Middleton et al., BE-10 IN BAUXITE AND COMMERCIAL ALUMINUM, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 92(1-4), 1994, pp. 362-366
Citations number
13
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
92
Issue
1-4
Year of publication
1994
Pages
362 - 366
Database
ISI
SICI code
0168-583X(1994)92:1-4<362:BIBACA>2.0.ZU;2-C
Abstract
Five different samples of commercial aluminum have Be-10 concentration s that range from a low of 40 x 10(6) to a high of 100 x 10(6) (atom B e-10)/(g Al). The beryllium-10 is probably produced in the atmosphere and introduced into aluminum ore deposits in varying amounts by rainwa ter during ore genesis. One modem ore, a bauxite from Haiti, contains approximately 6 x 10(9) atom Be-10/(g sample) or 5.7 x 10(10) atom Be- 10/(g Al). Geologically older, allocthonous bauxite from Arkansas cont ains considerably less Be-10; this observation suggests that Be-10 can be used to constrain the age of the deposit. The presence of Be-10 in commercial aluminum makes it inadvisable to add modem Al to small sam ples in which very low levels of Be-10 are to be determined.