AMS MEASUREMENTS OF BE-10 AND AL-26 FOR STUDYING SHIELDING EFFECTS INMETEORITES

Authors
WELTEN KC LINDNER L VANDERBORG K ALDERLIESTEN C VANROIJEN JJ DEJONG AFM SCHULTZ L
Citation
Kc. Welten et al., AMS MEASUREMENTS OF BE-10 AND AL-26 FOR STUDYING SHIELDING EFFECTS INMETEORITES, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 92(1-4), 1994, pp. 500-504
Citations number
23
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
500 - 504
Database
ISI
SICI code
0168-583X(1994)92:1-4<500:AMOBAA>2.0.ZU;2-5
Abstract
The Be-10 activites in 21 diogenites vary from 17 to 27 dpm/kg. These variations can primarily be ascribed to shielding effects, as was dedu ced from their correlation with the Ne-22/Ne-21 ratio. The Be-10 produ ction rates in small diogenites are 10-30% higher than was predicted b y a semi-empirical model based on the Knyahinya chondrite. This implie s that Be-10 is less shielding dependent than expected. Our first AMS measurements of Al-26 in chondrites agree with earlier Al-26 gamma-ray results.