TECHNICAL SPECIFICATIONS

Model 880 Elite authorized contents

Isotope

Assembly

Gamma

Half Life

Approximate

Device/Source

 

Model Number

Energy Range

 

Steel Working

Maximum

 

 

 

 

Thickness

Capacity

 

Ytterbium-169

91810

8-308 keV

32 days

2-20 mm

20 Ci

0.74 TBq

Selenium-75

A424-25W

66-401 keV

120 days

3-29 mm

150 Ci

5.55 TBq

Iridium-192

A424-9

206-612 keV

74 days

12-63 mm

50 Ci

4.81 TBq

Cobalt-60

A424-19

1.17-1.33 MeV

5.27 years

50-150 mm

25 mCi

925 MBq

Cesium-137

A424-30

663 keV

30 years

12-63 mm

380 mCi 14.0 GBq

Model 880 Omega authorized contents

Isotope

Assembly

Gamma

Half Life

Approximate

Device/Source

 

Model Number

Energy Range

 

Steel Working

Maximum

 

 

 

 

Thickness

Capacity

Ytterbium-169

91810

8-308 keV

32 days

2-20 mm

30 Ci

1.11 TBq

Selenium-75

A424-25W

66-401 keV

120 days

3-29 mm

80 Ci

2.96 TBq

Iridium-192

A424-9

206-612 keV

74 days

12-63 mm

15 Ci

0.55 TBq

Source output

Isotope

At 1 m per Ci (37 GBq)

At 1 ft per Ci (37 GBq)

Ytterbium-169

0.125 R/hr

1.25 mSv/hr

1.3 R/hr

13.0 mSv/hr

Selenium-75

0.203 R/hr

2.03 mSv/hr

2.2 R/hr

22.0 mSv/hr

Iridium-192

0.48 R/hr

4.80 mSv/hr

5.2 R/hr

52.0 mSv/hr

Cobalt-60

1.30 R/hr

13.0 mSv/hr

14.0 R/hr

140 mSv/hr

Cesium-137

0.32 R/hr

3.20 mSv/hr

3.4 R/hr

34.0 mSv/hr

Selected attenuation data

Material

Approximate

 

 

 

Approximate Half Value Thickness

 

 

 

Material

 

 

 

 

Inches (mm)

 

 

 

 

 

Density

Ytterbium-169

Selenium-75

Iridium-192

Cobalt-60

Cesium-137

 

(g/cm3)

 

 

 

 

 

 

2.400

(61.0)

 

 

Concrete

2.35

1.140

(29.0)

1.180

(30.0)

1.700

(43.2)

3.00 (76.2)

Aluminum

2.65

 

-

1.100

(27.0)

 

-

 

-

 

-

Steel

7.80

0.170

(4.3)

0.315

(8.0)

0.512

(13.0)

0.827

(21.0)

0.900

(22.9)

Lead

11.34

0.032

(0.8)

0.039

(1.0)

0.200

(5.1)

0.500

(12.7)

0.250

(6.4)

Tungsten

17.80

 

-

0.032

(0.8)

0.130

(3.3)

0.310

(7.9)

0.225

(5.7)

DU

18.70

 

-

 

-

0.050

(1.3)

0.270

(6.8)

0.125

(3.2)

Operating Distance

The distance between the remote control and the exposure head is determined by summing the length of the remote control conduits plus the total length of source guide tubes used, and normally should not exceed 47 ft (14.2 m) with standard 25 ft. controls.

Standard remote controls:

25 ft (7.6 m), 35 ft (10.7 m), 50 ft (15 m)

Standard source guide tubes (projection sheaths):

7 ft (2.1 m) set of three source guide tubes: 21 ft total (6.3 m)

1.3

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Sigma projetor Model 880 Elite authorized contents, Model 880 Omega authorized contents, Source output, Operating Distance