-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

1.000

0.944

0.891

0.841

0.793

50

0.749

0.707

0.667

0.629

0.594

100

0.561

0.529

0.499

0.471

0.445

150

0.420

0.396

0.374

0.353

0.333

200

0.314

0.297

0.280

0.264

0.249

250

0.235

0.222

0.210

0.198

0.187

300

0.176

0.166

0.157

0.148

0.140

350

0.132

0.125

0.118

0.111

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]

Maximum activity

GS75M11, GS75M12,

SR17, SR18

3 × 3

(2.5 × 2.5)

3700 GBq

100 Ci

Capsule dimensions special form certification and safety performance testing:

Code

Capsule type (*)

External dimensions

Φ [mm] x h [mm]

ISO classification

GS75M11

M11

6 × 12

C 63545

GS75M12

M12

6 × 20

C 63545

SR17

SR17

6.7 × 27

C 63545

SR18

SR18

7.15 × 23.5

C 63545

* Capsule material:

inner: titanium or vanadium
outer: corrosion resistant steel