-SEALED SOURCES

Selenium (Se-75) – sealed source

metal powder

SKU: SE1 Categories: ,

Description

Main application:                        Gamma radiography

Half-life:                                       120 days

Recommended working life:     2 years

Radiation energies Eγ [MeV]:

0.066 (1.1%)

0.097 (3.5%)

0.121 (17.3%)

0.136 (59.0%)

0.199 (1.5%)

0.265 (59.1%)

0.280 (25.2%)

0.305 (1.4%)

0.401 (11.6%)

and others

Radioactive decay:

Days from the date of measurement

0

10

20

30

40

0

50

100

150

200

250

300

350

1.000

0.749

0.561

0.420

0.314

0.235

0.176

0.132

0.944

0.707

0.529

0.396

0.297

0.222

0.166

0.125

0.891

0.667

0.499

0.374

0.280

0.210

0.157

0.118

0.841

0.629

0.471

0.353

0.264

0.198

0.148

0.111

0.793

0.594

0.445

0.333

0.249

0.187

0.140

0.105

Description: double encapsulation containing the isotope as compressed metal powder of selenium or VSe compound. Inner capsule made of titanium or vanadium alloy sealed by laser welding. Outer capsule made of corrosion resistant steel sealed by argon arc welding.

Capsules:         GS75M11, GS75M12, SR17, SR18

Identification: by serial number

Special form radioactive material certificate No: RUS/6223/S-96

 

Code

Active part

d [mm] x l [mm]

Max activity

[GBq]

[Ci]

GS75M11, GS75M12, SR17, SR18

3 × 3 (2.5 × 2.5)

3700

100

Capsule dimensions and safety performance testing

Code

Capsule type

External dimensions

Φ [mm] x h [mm]

Capsule material

ISO classification

GS75M11 GS75M12 

SR17

SR18

M11

M12

SR17

SR18

6 × 12

6 × 20

6.7 × 27

7.15 × 23.5

inner: titanium or vanadium

outer: corrosion resistant steel

C 63545

C 63545

C 63545

C 63545