DE1076270B - Luminous fluorescent lamp, as well as the method of making it - Google Patents

Description

GERMAN

The invention relates to a self-luminous fluorescent lamp, the fluorescent layer on the Inside wall of the tube is excited by electrons that come from tritium.

It is already known to use gaseous tritium as an energy source for exciting a phosphor layer use.

The ^ radiation of tritium is very low in energy and is only a few percent of that of natural and common artificial radioactive substances, e.g. B. 33Sr ₁ , emitted corpuscular radiation energy. Since only a small percentage of the electrons emitted when individual tritium atoms decay reach the wall, practically only a small proportion of the electrons emerging from the gaseous tritium are available to stimulate the luminous substance on the inner wall of the vessels.

According to the present invention, this disadvantage is avoided in that it is on the luminous substance layer a coating of an occluded tritium-containing metal, preferably only a few atoms thick, preferably titanium, zirconium, or another hydrogen absorber.

This ensures that the path from the occluded tritium atom to the tritium to be stimulated Phosphor crystals is very small.

The manufacture of the fluorescent lamp is carried out according to the invention in that the inner wall of the with a fluorescent tube to be coated first with a preferably thin film of hydrofluoric acid coated, then dusted with fluorescent powder, dried and / or baked, whereupon by means of a process known per se on the phosphor layer by evaporation in a vacuum or by Cathode sputtering is a layer of a metal that absorbs the tritium, only a few atoms thick (Hydrogen aspirator) is applied, whereupon the tube is evacuated and then with a sufficient Amount of gaseous tritium is filled, practically completely from the hydrogen absorber is occluded.

The titanium, zirconium or the like can be evaporated in a manner known per se, for example by eddy currents, or the required amount of metallic titanium, zirconium or the like can be applied, for example, to a glow wire located inside the tube which it evaporates when the filament is heated accordingly. The filament itself can remain inside the tube after the titanium has evaporated - without affecting the tube's effectiveness. After loading the titanium, zirconium or the like with the required amount of tritium, the vacuum within Selbstleuch.ten.de needs a fluorescent lamp
and processes for their manufacture

Applicant:

WESTO G.m.b.H.

Factory formerly techn. Products,

Stuttgart-Feuerbach, drive away 109,

and gamma society for practical

radiology

Hartmann & Futterknecht,
Stuttgart-Wangen, Ludwig-Blum-Str. 37

Rudolf Futterknedit, Stuttgart-Wangen,
has been named as the inventor

of the pipe also by no means to be maintained, a fact which is also known per se Way can be used to create glass surfaces of any size and shape with a self-illuminating Layer to be provided. For example, the previously evacuated tube can be connected to one of the by the Tritium emitted / J-rays irriscible or gas that can be stimulated into collision lights must be filled at the appropriate pressure.

In the drawing is an embodiment of a self-luminous fluorescent tube according to the invention shown, in which on the inside of the glass wall 3 covering phosphor layer 2 a only a few atoms thick layer 4 of a metal absorbing the tritium, for example titanium, zirconium Od. Like. Is applied. The interior 1 can be stimulated with tritium gas or with one for shock lighting Be full of gas.

Claims (3)

Patent claims: 1. Self-luminous fluorescent tube, the fluorescent layer on the inner wall of the tube is excited by electrons emanating from the tritium, characterized in that on the Phosphor layer is a coating of occluded tritium, preferably only a few atoms thick containing metal, preferably titanium, zirconium, or another hydrogen absorber. 2. A method for producing a fluorescent tube according to claim 1, characterized in that 909 757/225 that the inner wall of the tube to be coated with a luminescent material is initially preferably coated with a thin film coated with hydrofluoric acid, then dusted with fluorescent powder, dried and / or is baked out, whereupon the fluorescent layer is applied by means of a method known per se by evaporation in a vacuum or by cathode sputtering, a layer of a tritium absorbing only a few atoms thick Metal (hydrogen aspirator) is applied, whereupon the tube is evacuated and then with a sufficient amount of gaseous tritium is filled, which is practically perfect is occluded by the hydrogen aspirator. 3. A method for producing a fluorescent tube according to claim 2, characterized in that that the metallic titanium, zirconium or the like. On a preferably in the longitudinal axis of the Tube extending filament is located before or after the introduction of the tritium into the evacuated tube is heated so far that on the inside of the on the inner wall The fluorescent layer located on the tube is preferably only a few atoms thick metal layer precipitates, which absorbs the tritium located in the tube or subsequently introduced into it. Considered publications:
British Patent No. 646,414. Legacy Patents Considered:
German Patent No. 1 035 792. 1 sheet of drawings © 909 757/225 2.60