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

Journal Article · Tue Dec 14 23:00:00 EST 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.82.064317· OSTI ID:21499269

Wauters, F; Breitenfeldt, M; De Leebeeck, V; Kozlov, V Yu; Kraev, I; Roccia, S; Soti, G; Tandecki, M; Traykov, E; Van Gorp, S; Severijns, N ^[1]; Verstichel, B ^[1]; CERN, CH-1211 Geneve 23 ^[2]; Zakoucky, D ^[3]

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1. Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, B-3001 Leuven (Belgium)
2. Switzerland
3. Nuclear Physics Institute, ASCR, 250 68 Rez (Czech Republic)

The half-life of the {alpha}-decaying nucleus {sup 221}Fr 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 {sup 221}Fr of t{sub 1/2}=286.1(10) s that is of comparable precision to the most precise value available in the literature.

• OSTI ID: 21499269
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 82; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCURACY
ALPHA DECAY RADIOISOTOPES
ELEMENTS
FRANCIUM 221
FRANCIUM ISOTOPES
GOLD
HALF-LIFE
HEAVY NUCLEI
ISOTOPES
METALS
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-EVEN NUCLEI
RADIOISOTOPES
SEMIMETALS
SILICON
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TRANSITION ELEMENTS