Tritium source

Fire Control Devices. The fire control devices used with mortars, howitzers, and tanks use tritium sources to illuminate them in low light conditions. 

Tritium Source. If a Tritium source is broken during handling, inform all personnel to vacate the area and move up wind from the device. When a tritium source breaks or is no longer illuminated, the local RSO must be notified, and the following actions must be taken under the direction of the RSO ... 

CECOM-TR-94-11. Radiation Protection Information for the Safe Handling of Tritium Sources in Radioluminescent Devices. CECOM Safety Office, January 1996. 

The detector cathode consists of a metal foil impregnated with a /S-emitting element, usuaUy tritium or nickel-63. The former isotope gives greater sensitivity than the latter, but it has an upper temperature limit of 220° C because of losses of tritium at high temperatures nickel-63 can be used routinely at temperatures up to 350°C. Also, nickel is easier to clean than the tritium source these radioactive sources inevitably acquire a surface film that decreases the /3-emission intensity and hence the sensitivity. A 30% KOH solution is usually used to clean the sources. 

Leonhardt, J.W., New detectors in environmental monitoring using tritium sources, J. Radioanal. Nucl. Chem. 1996,206 (2, International Conference on Isotopes, Proceedings, 1995, Pt. 4), 333-339. 

A mass spectrometer also using a radioactive ionizing medium has been described by Yang and Conway. Gases at pressures up to 10 Torr were irradiated by the 400-mCi tritium source in a flow system. The time required by the gas to reach the ion sampling orifice leading to the low-pressure electrode and mass analysis system was about 1 msec. The relatively... 

Wentworth and Chen developed a kinetic model using a parallel-plate tritium source for the electron-capture detector that correlates observed response values with electron affinities derived from reversible half-wave potentials in aprotic... 

Procedures using deuterium are presented only in cases where tritium examples are lacking and when (in the authors opinion) they will work with the analogous tritium source. Any adjustments of procedure deemed necessary for making them work with... 

Stoichiometric C-deprotonation of a compound results in a carbanion which can be quenched by addition of tritiated water or another tritium source, either in situ or after some manipulation of the deprotonated substrate. This method can have advantages over thermodynamic exchange procedures, including greater chemo- or regioselectivity, the achievement of higher specific activity or economy in the use of tritium. 

Catalysts for tritium exchange labeling of compounds in solution utilizing liquid-phase tritium sources (usually tritiated water), aside from acids and bases or organic Lewis acids, are all metal based. Soluble metal catalysts are either metal salts or organometallic complexes. A recent review covers many aspects of this chemistry ". ... 

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