Metal container instead of glass bulb in tritium measurement by helium-3 ingrowth method

L. Palcsu, M. Molnár, Z. Szántó, É Svingor, I. Futó

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The performance of a mass spectrometric system for measurement of tritium by 3He ingrowth method is described. Preparation and measurement includes three steps. The first step is to pump the dissolved gas from the environmental water samples stored in special glass bulb. The second step is the storage of the degassed water for a few months. In the final step the helium-3 formed from tritium is measured by mass spectrometer. In the course of tritium measurement there were some difficulties with the glass bulbs, such as pre-treatment of the glass, storage of the samples in deep freezer, long storage time, O-ring sealing. To solve these problems metal bulbs were built and applied with volume of six litres. The metal bulb was equipped with a metal valve. Three litres of water can be filled into the metal bulb. The large volume of the bulb causes an increase of degassing time, and a decrease of the storage time. The degassing of three litres of water needs twice one and a half hours in two days. The storage time is only two months in contrast to the half-year storage time of glass bulb. The background, the helimn penetration from the air is less than using glass bulbs, because the metal bulb can be fitted to the inlet system via copper gasket instead of elastic O-ring.

Original languageEnglish
Pages (from-to)532-535
Number of pages4
JournalFusion Science and Technology
Volume41
Issue number3 II
Publication statusPublished - May 2002

Fingerprint

Helium
bulbs
helium isotopes
Tritium
tritium
containers
Containers
Metals
Glass
glass
O rings
metals
Water
Degassing
degassing
Mass spectrometers
water
Copper
Gases
dissolved gases

ASJC Scopus subject areas

  • Nuclear Energy and Engineering

Cite this

Metal container instead of glass bulb in tritium measurement by helium-3 ingrowth method. / Palcsu, L.; Molnár, M.; Szántó, Z.; Svingor, É; Futó, I.

In: Fusion Science and Technology, Vol. 41, No. 3 II, 05.2002, p. 532-535.

Research output: Contribution to journalArticle

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