Activity Listing for KamLAND PPO Samples, activated at MIT 2/10/2002



Zelimir Djurcic and Andreas Piepke
University of Alabama
(Status 4/5/2001)


We summarize the activities found in the activated samples UA 68 to 76 (UA sample designation NA 9). The activities listed refer to 2/12/2002 12:00 (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).
The initial activity of sample CIT 77 was not measured as this sample had leaked out of its irradiation container. We did not want to risk conatminating our counting system.

Activity [Bq]
Sample Rabbit 24Na 42K 51Cr 60Co 65Zn 82Br 122Sb 131Ba 140La 181Hf 187W 198Au 233Pa 239Np
UA 68
TSI quartz 		middle (12 h) (2.58±0.26)·104 586±60 9340±940 88±9 40±17 5140±520 254±26 211±21 1070±110 ND 21±15 93±10 ND ND
UA 69
ITEP quartz 		middle (12 h) (6.0±0.6)·104 4500±500 4900±500 44±5 31±4 (1.90±0.2)·105 99±10 ND 9500±950 ND 550±55 750±80 ND ND
UA 70
Heraeus quartz 311 		rear (12 h) (1.9±0.2)·104 530±53 2500±250 75±8 <50 3130±320 150±15 150±20 180±20 ND 51±26 870±90 ND ND
UA 71
Heraeus quartz 2 		rear (12 h) (1.62±0.16)·104 310±40 3800±380 48±7 38±4 2800±280 290±29 130±18 123±13 ND <40 120±12 ND ND
UA 72
Evaporated KamLAND scint. 		front (24 h) (2.1±0.2)·104 1750±180 93±40 940±94 56±16 4850±490 160±16 196±20 2820±290 ND 41±22 500±50 ND ND
UA 73
Empty quartz vial, blank for UA 72 		front (24 h) (1.44±0.15)·104 1350±140 222±50 878±90 72±29 1270±130 150±15 155±19 3010±300 ND 187±19 340±34 ND ND
UA 74
Evaporated U-spiked KamLAND scint. 		front (24 h) (2.1±0.2)·104 5360±1020 1100±110 617±62 184±38 918±92 197±20 210±21 6660±670 ND 404±41 781±79 ND ND
UA 75
PPO 21-634 		front (24 h) (1.37±0.14)·105 998±201 496±173 406±41 <170 3160±320 (4.6±0.45)·104 1030±110 2630±270 ND <160 914±100 ND ND
UA 76
Empty quartz vial, blank for UA74 		middle (24 h) (1.19±0.12)·104 1300±130 297±38 460±46 <41 527±53 469±47 115±12 3350±340 ND 150±20 296±30 ND ND
Sample Rabbit 24Na 42K 51Cr 60Co 65Zn 82Br 122Sb 131Ba 140La 181Hf 187W 198Au 233Pa 239Np


This page is maintained by A. Piepke
Last update April 5, 2002