Capintec CRC-25R - Page 202

CAPINTEC, INC CRC
®
-25R
Uncertainty Due to
Radioisotopes
Calibration
Setting
Number
Syringe
Corr. %
Published
Data %
Half-Life
(NCRP-58)
Ref. Comments
87
Y Yttrium
(Eqb.
87m
Sr)
357 ORNL76 Reading gives
87
Y Act.
in eqb. sample. Eqb.
after 18 hours.
87
Y
87m
Sr
Yttrium
Eqb.
Strontium
341 2 ORNL76
Reading gives sum of
87
Y &
87m
Sr activity in
equilibrium sample.
88
Rb Rubidium 189 14 17.8 M 1 ORNL76
88
Y Yttrium
465 ÷ 2
1.8 106.61 D 2 NBS73
89
Rb Rubidium 768 1 15.2 M 1 ORNL76
90
Y Yttrium
48 × 10
64.0 H 1 NIST92 Estimation use only.
91
Y Yttrium
850 × 10
58.5 D 4 NDT70
Almost pure β decay.
Estimation use only.
94
Nb Niobium 673 2.03E4 Y 16 ORNL76
95
Nb Niobium 285 34.97 D 1 NDT70 Pure
95
Zr Zirconium 271 64.02 D 5 NDT70 Pure
95
Zr
95m95
Nb
Zirconium
Eqb.
Niobium
145
95m
Nb
3.61 D 1 NDT70
Reading gives sum of
95m
Nb &
95
Nb activity in
equilibrium sample.
Eqb. after 2 years.
97
Nb Niobium 249 72.1 M 7 ORNL76
97
Zr
97m
Nb
Zirconium
Eqb.
Niobium
341 12 16.90 H 5 ORNL76
Reading gives sum of
97
Zr &
97m
Nb activity in
equilibrium sample.
Eqb. after 10 minutes.
97m
Nb Niobium 271 60 S 1 ORNL76
97
Ru Ruthenium 116 15 2 2.9 D 1 ORNL76 Decays to
97m
Tc
97m
Tc Technetium
256 × 10
65 91.0 D NM75 Estimation use only.
99
Mo Molybdenum
(in Std. Mo Kit)
080 × 5 or
246× 10 or
030 × 3.5
NTS78
99
Mo Molybdenum
(in CAP-MAC)
030 × 4 or
204 × 10
NBS78
99
Mo Molybdenum
(in MAC-S)
030 × 4 or
204 × 10
NBS78
99
Mo Molybdenum
(Eqb.
99m
Tc)
165 2 1.9 65.92 H 2 NBS78
99m
Tc Technetium 080 2 2.1 6.007 H 1 NBS76
99m
Tc Technetium
(in CAP-MAC)
042 2.1 6.007 H 1 NBS76
A2 - 10 APPENDIX II June 09