Gamma Reference Standard Set
GS290 consists of a set of FIVE/SIX uncalibrated Gamma reference sources evaporated and sealed on 25mm dia x 5mm plastic disc covering ranging from 100KeV upto 1.33MeV energies with activity in the range of 2 to 5 micro curie. A reference chart for this is given below. These radioactive sources offered are from BRIT. This serves as an uncalibrated (for activity) reference set for use with GR 611M & 611 & Gamma ray spectroscopy system with MCA. This set can be used for energy calibration purpose. The accuracy of these sources is in the range of /-10%. All these disc sources are enclosed in a neatly polished wooden box.
|Isotope||Energy MeV||Nominal Activity||Half Life|
|Co-57||0.123||2-5 µci||273 Days|
|Ba-133||0.36 (Main)||2-5 µci||7.5 Years|
|Na-22||0.511; 1.280||2-5 µci||2.6 Years|
|Cs-137||0.662)||2-5 µci||30 Years|
|Co-60||1.17; 1.33||2-5 µci||5.3 Years|