Activity Listing for KamLAND PPO Samples, activated at MIT 7/13/2001



Zelimir Djurcic and Andreas Piepke
University of Alabama
(Status 7/24/2001)


We summarize the activities found in the activated samples UA 45, 46, 47, 50, 53, 54, 55, 56 and CIT 54 (UA sample designation NA 7). The activities listed refer to 7/17/2001 (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 Rabbit 24Na 42K 51Cr 60Co 65Zn 82Br 122Sb 131Ba 140La 198Au 233Pa 239Np
UA 45
Packard PPO 21-634 		3 front (1.5±0.15)·103 ND ND 136±14 ND 95±10 ND ND ND ND ND ND
UA 46
Blank 		2 front (5.5±0.55)·103 ND 124±32 1430±144 ND 325±33 50±6 ND ND 231±23 ND ND
UA 47
Packard PPO mix 		2 back (7.6±0.7)·103 ND 417±42 980±98 ND 1020±112 ND ND ND 31±4 ND ND
UA 50
U/Th spiked PPO 		3 back (6.97±0.7)·103 ND 113±25 96±10 ND 64±7 25±5 ND 25±5 ND 254±25 2660±270
UA 53
Evaporated PPO
after water extrc.		 2 back (4.5±0.45)·103 ND 102±31 906±103 ND 974±98 19±5 ND ND 108±11 ND ND
UA 54
CIT bottle blank		 2 middle ND ND ND ND ND 176±18 11±4 ND ND 25±3
CIT 54
Evaporated PPO
before water extrc. 		3 front 661±66 ND ND 148±15 57±9 116±12 30±3 ND ND 32±3 ND ND
UA 55
Evaporation blank 		2 middle 4850±485 ND ND 1260±126 280±28 ND 32±5 ND 19±7 25±3 ND ND
UA 56
Flux monitor		 2 front (3.1±0.3)·104 9400±940 ND 949±95 136±45 9530±960 164±18 (1.0±0.1)·104 421±42 ND (2.14±0.22)·104 (5.33±0.54)·104


This page is maintained by A. Piepke
Last update July 24, 2001