RITVERC JSC
RITVERC JSC
10, Kurchatova str., 194223,
St. Petersburg, Russia
Phone: +7 812 297-44-63
Fax: +7 812 297-58-87
Email: info@ritverc.com
Url: www.ritverc.com

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137Cs

¹³⁷Cs Cs-137 Цезий-137 Cesium-137 Caesium-137

Half-life, days

10990.0000 ± 40.0000

Photon energy
Ba XKα2 31.8174 keV (1.95 ± 0.04 %)
Ba XKα1 32.1939 keV (3.59 ± 0.07 %)
Ba XKβ2 36.31–36.67 keV (1.055 ± 0.022 %)
Ba XKβ1 37.26–37.43 keV (0.266 ± 0.008 %)
γ 661.657 ± 0.003 keV (84.99 ± 0.20 %)

 

Certificates and documentation

  • Special form radioactive material approval certificate No. D/0098/S-96 (Rev. 1) DE
  • Certificate of conformity No. ОИАЭ.RU.192 OC.00328 RU

Description

137Cs is incorporated in a light ceramic matrix and sealed in a welded stainless steel capsule. GCs7.27 source is also available in titanium capsule.

Capsule type 11
Capsule type 27, 12, 13, 14
Capsule type 15
Capsule type 16, 17, 19, 18
Capsule type 26
Capsule type 46
D × H, mm d × h, mm Nominal activity * Code
mCi MBq
3 × 3 2.1 × 1.5 0.0027–0.135 0.1–5 GCs7.11
3 × 10 2.1 × 1.5 0.0027–0.135 0.1–5 GCs7.12
4 × 10 3.1 × 1.5 0.0027–0.135 0.1–5 GCs7.13
7 × 10 5.2 × 2.5 0.0027–0.135 0.1–5 GCs7.14
8 × 5 4 × 1.2 0.0027–0.135 0.1–5 GCs7.15
10 × 5 8.5 × 1 0.0027–0.135 0.1–5 GCs7.16
12 × 3 8.5 × 1 0.0027–0.135 0.1–5 GCs7.17
30 × 4.5 8.5 × 1 0.0027–0.135 0.1–5 GCs7.18
10 × 4 4 × 1.2 0.0027–0.135 0.1–5 GCs7.19
6 × 10 4 × 6.1 0.0027–0.135 0.1–5 GCs7.26 **
3 × 5 2.1 × 1.5 0.0027–0.135 0.1–5 GCs7.27
6 × 9.5 3 × 4 0.0058–0.23 0.215–8.5 GCs7.46 **

* Tolerance: -10 ÷ +20 %.
** For details see Heavy-duty sources.
Other activities and dimensions are available on request.
ISO classification:

  • C64344 (GCs7.11);
  • C64444 (GCs7.12 ÷ GCs7.19);
  • C65546 (GCs7.26);
  • C66444 (GCs7.27 / Stainless Steel);
  • C65343 (GCs7.27 / Titanium);
  • C66546 (GCs7.46).

Recommended working life: 15 years.
Sources can be supplied complete with holders. For details see Source holders.

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