Change of {sup 7}Be decay rate in exohedral and endohedral C{sub 60} fullerene compounds and its implications
- Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064 (India)
- Radiochemistry Division, Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064 (India)
- Nuclear Science Centre, New Delhi (India)
The half-life of exohedral {sup 7}Be-C{sub 60} complex and that of {sup 7}Be implanted in a gold foil have been found to be about the same within {approx_equal}0.2%. Using a radiochemical technique, we also measured that the probability of formation of endohedral {sup 7}Be-C{sub 60} complex by nuclear implantation technique was (5.6 {+-} 0.45)%. We also find that the half-life of endohedral {sup 7}Be-C{sub 60} complex is shorter than that of exohedral complex by more than 1%. An analysis of these results using linear muffin-tin orbital method calculations indicates that most of the implanted {sup 7}Be ions in fullerene C{sub 60} stay at a distance of {approx_equal}5.3 A from the centers of nearest C{sub 60} molecules forming exohedral compounds and those who enter the fullerene cages go to the centers of the cages forming endohedral {sup 7}Be-C{sub 60} compounds.
- OSTI ID:
- 20771346
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 73, Issue 3; Other Information: DOI: 10.1103/PhysRevC.73.034323; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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