Citation
Kutschera, W., Ahmad, I., & Paul, M. (1992). Half-life determination of 41Ca and some other radioisotopes. Radiocarbon, 34(3), 436-446.Journal
RadiocarbonDescription
From the 14th International Radiocarbon Conference held in Tucson, AZ, May 20-24, 1991.Additional Links
http://radiocarbon.webhost.uits.arizona.edu/Abstract
We have performed a new determination of the half-life of 41Ca by measuring the specific activity of an enriched Ca material with known 41Ca abundance. We measured the activity via the 3.3-keV X-rays emitted in the electron capture decay of 41Ca, and the 41Ca abundance was measured by low-energy mass spectrometry. The result, t1/2 = (1.01 +/- 0.10) x 10^5yr, agrees with the recent 'geological' half-life of Klein et al., (1991), t1/2 = (1.03 +/- 0.07) x 10^5 yr, and with the corrected value of Mabuchi et al. (1974), t1/2 = (1.13 +/- 0.12) x 10^5yr. We recommend the weighted mean of these three measurements, t1/2 = (1.04 +/- 0.05) x 10^5yr, as the most probable half-life of 41Ca. We also discuss the situation of the radioisotopes, 32Si, 44Ti, 79Se and 126Sn, whose half-lives, though still uncertain, are potentially interesting for future AMS studies and other applications.Type
Proceedingstext
Language
enISSN
0033-8222ae974a485f413a2113503eed53cd6c53
10.1017/S0033822200063669