Capintec CRC-25R - Page 205

CAPINTEC, INC CRC
®
-25R
Uncertainty Due to
Radioisotopes
Calibration
Setting
Number
Syringe
Corr. %
Published
Data %
Half-Life
(NCRP-58)
Ref. Comments
130
I Iodine 984 12.36 H 1 ORNL76
131
I Iodine 151 1.65 8.021 D 1 NBS76 Decays to
131m
Xe.
1.1% feeding.
131m
Xe Xenon 089 20 3 11.9 D 1 ORNL76
131
Cs Cesium 148 20 3 9.69 D 1 ORNL76
131
Ba Barium 505 10 7 11.8 D 2 ORNL76
132
Te Tellurium 315 10 5 76.3 H 2 ORNL76 Pure
132
I Iodine 999 2.30 H 3 ORNL76 Pure
132
Te Tellurium
(Eqb.
132
I)
675 ÷ 2
Reading gives
132
Te
Act. in eqb. sample.
Eqb. after 1 day.
132
I Iodine
(Eqb.
132
Te)
653 ÷ 2
Reading gives
132
I Act.
in eqb. sample.
132
Te
132
I
Tellurium
Eqb.
Iodine
663 ORNL76
Reading gives sum of
132
Te and
132
I in eqb.
sample.
132
Cs Cesium 485 10 2 6.475 D 10 ORNL76
133
I Iodine 225 20.8 H 1 ORNL76 Decays to
133m
Xe.
133m
Xe Xenon 100 20 3 2.19 D 1 Decays to
133
Xe. See
App. IV.
133
Xe Xenon 188 12 1.95 5.243 D 1 NBS76
133m
Ba Barium 132 12 3 38.9 H 1 ORNL76 Decays to
133
Ba.
133
Ba Barium 591 10 3 10.5 Y 1 ORNL76
134
Te Tellurium 533 3 6 41.8 M 8 ORNL76
134m
Cs Cesium 037 or
160 × 2
15 2.91 H NM75 Decays to
134
Cs.
134
Cs Cesium 726 2.3 2.065 Y 1 NBS73
135m
Xe Xenon 181 3 15.29 M 3 ORNL76 Decays to
135
Xe. See
App. IV.
135
Xe Xenon 085 2 9.09 H 1 ORNL76
135m
Ba Barium 130 15 4 28.7 H 2 ORNL76
136
Cs Cesium
489 ÷ 2
4 13.1 D 1 ORNL76
137
Cs
137m
Ba
Cesium
Eqb.
Barium
220
2.0 30.0 Y 2
2.553 M 1
NBS73
Ref: 661.6 & 32.9 keV.
Reading gives
137
Cs or
Total Activity of eqb.
sample. Often referred
to as "Cs-137" Source.
139
Ba Barium
445 × 10
5 12 82.8 M 2 ORNL76
139
Ce Cerium 352 5 2.6 137.64 D 2 NBS73 Ref: 36.8 keV
141
Ce Cerium 061 5 5 32.50 D 1 ORNL76
June 09 APPENDIX II A2 - 13