Activity Listing for KamLAND PPO Samples, activated at MIT 11/3-4/2001



Zelimir Djurcic and Andreas Piepke
University of Alabama
(Status 12/9/2001)


We summarize the activities found in the activated samples UA 57, 58, 59, 64 and 65 (UA sample designation NA 8). The activities listed refer to 11/6/2001 (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 181Hf 187W 198Au 233Pa 239Np
UA 57
Evap. KamLAND scintillator 		1 middle (2.89±0.29)·104 1920±208 376±75 ND ND 2660±270 155±21 ND 8900±900 182±21 770±87 259±26 ND ND
UA 58
Packard PPO 21-634 		1 middle (9.3±0.9)·104 1520±197 1220±157 ND 171±73 2660±270 297±36 ND 7560±760 139±20 301±68 307±33 ND ND
UA 59
Blank 		1 middle (1.9±0.2)·104 1230±133 2470±252 ND ND 102±12 675±68 ND (1.7±0.2)·104 256±27 890±93 1100±133 ND ND
UA 64
Evaporated spiked scintillator
buffered in PPO 21-634 		1 front 3720±380 83±26 1800±180 86±11 103±19 4080±410 284±30 ND 1710±180 24±5 ND 71±9 33.2±11.5 ND
UA 65
Spiked PPO 21-634 		1 front (4.4±0.4)·104 ND ND 11±1 74±8 295±30 125±13 ND 3900±400 ND ND 77±8 2.6±0.4 166±17


This page is maintained by A. Piepke
Last update December 28, 2001