Activity Listing for KamLAND Samples, activated at MIT 11/25-26/2002



Zelimir Djurcic and Andreas Piepke
University of Alabama
(Status 11/27/2002)


We summarize the activities found in the activated samples UA 101, 102, 103, and 104, (UA sample designation NA 12). The activities listed refer to 11/27/2002 13:00 (initial counting after receipt of the samples while still in their activation vials). We only list the principal activities as determined by gamma ray spectroscopy using a shielded Ge detector. The listed activities are given in units of [Bq]. The quoted errors were derived by adding the statistical and a 10% systematic error in quadrature. ND means "not detected" (statistically insignificant).

Activity [Bq]
Sample Duration 24Na 42K 46Sc 51Cr 59Fe 60Co 76As 82Br 122Sb 140La 187W 198Au
UA 101
Kansai Maxsorb charcoal 		12 h (1.1±0.1)·105 (1.27±0.13)·106 168±28 (1.17±0.12)·105 191±69 670±40 9200±920 8600±860 2060±210 2220±230 3870±390 30±16
UA 102
Kansai Maxsorb charcoal 		12 h (1.02±0.1)·105 (1.99±0.2)·106 183±51 (1.23±0.12)·105 505±220 579±90 9400±940 8690±870 1830±190 2360±240 3890±430 42±30
UA 103
Integrated circuit chips SLAC 		12 h 2800±300 ND ND ND ND ND ND ND ND 1020±160 (7.53±0.76)·104 ND
UA 104
3M HFE-7100 		12 h 587±60 63±13 ND ND ND ND ND ND ND 237±24 ND 746±75
Sample Duration 24Na 42K 46Sc 51Cr 59Fe 60Co 76As 82Br 122Sb 140La 187W 198Au


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