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Characteristics of Common Radionuclides
| R/N |
Emission |
Energy Max |
Gamma Correction Factor |
Half-life |
Shielding |
Instruments |
(KeV) |
(R-cm 2 /mCi-hr) |
Portable |
Fixed |
|
|
|
|
|
|
|
|
C-14 |
Beta minus |
156 |
NA |
5730 y |
None |
GM ~ 2% |
LSC |
H-3 |
Beta minus |
18.6 |
NA |
12.3 y |
None |
NA |
LSC |
S-35 |
Beta minus |
167 |
NA |
87.4 d |
None |
GM ~ 2% |
LSC |
P-33 |
Beta minus |
249 |
NA |
25.4 d |
None |
GM ~ 2% |
LSC |
P-32 |
Beta minus |
1710 |
NA |
14.3 d |
Lucite |
GM ~ 25% |
LSC |
Ca-45 |
Beta minus |
256.9 |
NA |
162.7 d |
None |
GM ~ 2% |
LSC |
I-125 |
Gamma |
35 keV (6%) |
1.6 |
60.14 d |
Lead |
NaI ~ 8% |
LSC |
X-ray |
27 keV (112%) |
Gamma |
gamma |
35 keV (10%) |
Cr-51 |
Gamma |
320 keV (10%) |
0.18 |
27.7 d |
Lead |
GM ~ 2% |
LSC |
X-ray |
4 keV (67%) |
NaI ~ 2% |
Gamma |
gamma |
5 keV (20%) |
|
R/N |
Beta Range in Air |
Beta Range in Water |
Dosimetry |
ALI Ingestion |
ALI Inhalation |
Beta Dose rate to skin from |
(cm) |
(cm) |
uCi |
uCi |
1 uCi over distributed over 1 cm 2 |
C-14 |
22 |
0.03 |
None |
2000 |
2000 |
1 Rad/hour |
H-3 |
0.45 |
0.0006 |
None |
80000 |
80000 |
NA |
S-35 |
24 |
0.03 |
None |
6000 |
10000 |
1 Rad/hour |
P-33 |
46 |
0.06 |
None |
6000 |
8000 |
3 Rad/hour |
P-32 |
611 |
0.79 |
Yes -mCi quantities |
600 |
900 |
6 Rad/hour |
Ca-45 |
48 |
0.06 |
None |
2000 |
800 |
3 Rad/hour |
I-125 |
NA |
NA |
Yes - Iodination |
40 |
60 |
NA |
Cr-51 |
NA |
NA |
Yes |
40000 |
50000 |
NA |
|
Contacts
|
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Overall Program
Management - Debbie
Hrabinski, or call (732) 445 - 2550 |
 |
Health
Safety Specialists (By Campus Assignment), or call
(732) 445 - 2550 |
|
|
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Last Updated:1/31/05 |
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rights reserved. |
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