Observation of large change of Be-7 decay rate in Au and Al2O3 and its implications

Authors
Ray, A Das, P Saha, SK Das, SK Sethi, B Mookerjee, A Chaudhuri, CB Pari, G
Citation
A. Ray et al., Observation of large change of Be-7 decay rate in Au and Al2O3 and its implications, PHYS LETT B, 455(1-4), 1999, pp. 69-76
Citations number
19
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
455
Issue
1-4
Year of publication
1999
Pages
69 - 76
Database
ISI
SICI code
0370-2693(19990527)455:1-4<69:OOLCOB>2.0.ZU;2-P
Abstract
We find from our measurements that the decay rate of Be-7 implanted in Au i s lower than that implanted in Al2O3 by a relatively large amount (0.72 +/- 0.07)%. This result and others have been analyzed quantitatively using the linear muffin-tin orbital (LMTO) method and Hartree's calculations. Our re sults are important for accurately extracting the nuclear matrix element of the astrophysically significant Be-7 + e(-)--> Li-7 + v reaction. (C) 1999 Elsevier Science B.V. All rights reserved.