Half-life of 221Fr in Si and Au at 4 K and at millikelvin temperatures

Half-life of 221Fr in Si and Au at 4 K and at millikelvin temperatures

The half-life of the α-decaying nucleus 221Fr was determined in different environments, that is, embedded in Si at 4 K, and embedded in Au at 4 K and about 20 mK. No differences in half-life for these different conditions were observed within 0.1%. Furthermore, we quote a value for the absolute half...

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Veröffentlicht in:Physical Review C, Nuclear Physics Nuclear Physics, 2010-12, Vol.82 (6), p.1-5
Hauptverfasser: Wauters, Frederik, Verstichel, B, Breitenfeldt, Martin, De Leebeeck, V, Kozlov, V. Yu, Kraev, I, Roccia, S, Soti, Gergelj, Tandecki, M, Traykov, E, Van Gorp, Simon, Zakoucky, D, Severijns, Nathal
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Sprache:eng
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Zusammenfassung:The half-life of the α-decaying nucleus 221Fr was determined in different environments, that is, embedded in Si at 4 K, and embedded in Au at 4 K and about 20 mK. No differences in half-life for these different conditions were observed within 0.1%. Furthermore, we quote a value for the absolute half-life of 221Fr of t1/2 = 286.1(10) s that is of comparable precision to the most precise value available in the literature.
ISSN:2469-9985