Gas sources

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LEA produces ⁸⁵Kr gas and other radionuclides on request (¹³³Xe…) packaged in glass ampoules or in metal cylinders.

Gas sources are used in detection metrology, as part of the environmental monitoring of releases from nuclear facilities.

Associated measurement systems are mainly ionization chambers, Geiger Muller detectors or atmospheric monitors installed on process lines.

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Our ⁸⁵Kr sources (ampoules or cylinders) are considered as unsealed sources.
Manufacturing tolerance are ± 30%. The uncertainty associated with the measurement of volume activity is ± 5% at k=2.
The default pressure in metal bottles is 100 bar. The pressure in the ampoules is lower than 0.5 bar.

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Radionuclide	Volume Activity	k=2 measurement uncertainty	Equivalent activity	Reference
	Under COFRAC* accreditation
⁸⁵Kr	0.2 kBq/cm³ • 0.005 µCi/cm³	5%	100 MBq • 2 703 µCi	KR85 EZS E 20

* Scope N°2-6386 available on www.cofrac.fr or upon request.

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Radionuclide	Volume Activity	k=2 measurement uncertainty	Reference
⁸⁵Kr	240 kBq • 6.5 µCi	5%	KR85 EZS A 40
⁸⁵Kr	120 000 kBq • 3 243 µCi	5%	KR85 EZS A 60

LEA also offers SG500 or SG3000 gas containers, equipped with sampling probes and mounted staubli fittings.

Gas sources

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