Spark chamber apparatus for detecting radiations

Claim 2

A spark chamber apparatus for detecting radiations comprising two glass plates each coated over the interior area of one face thereof with a thin layer of electroconducting transparent substance to form an electrode, a non-electroconductive covering glaze fused along the boundary zone between said electrode layer and the glass plate, a glazy frame fused to the perimeters of said two glass plates disposed in parallel facing each other at a distance of several millimeters to form a sparking chamber, a sparking gas enclosed at normal pressure in said spark chamber, and electric D.C. conductors connected to said electrode layers.

Claim 3

A spark chamber apparatus for detecting radiations which has multistage spark chambers consisting of a plurality of spark chambers as defined in claim 1, laying one chamber over another so as to have an intermediate glass plate in common.

Claim 4

A spark chamber apparatus for detecting radiations as defined in claim 1 wherein at least one of the glass plates has a number of small hollow holes provided regularly in the outside of the glass plate.

Claim 5

A spark chamber apparatus for detecting radiations as defined in claim 3 wherein the small hollow holes provided in the outside of the glass plate are filled up with synthetic resin.

Claim 6

A spark chamber apparatus for detecting radiations comprising two glass plates each coated over the interior area of one face thereof with a thin layer of electroconductive transparent substance to form an electrode, a non-conductive covering glaze fused along the boundary zone between said electrode layer and the glass plate, a glazy frame fused to the perimeters of said two glass plates set apart in parallel facing each other at a distance of several millimeters by several pieces of non-electroconductive spacers interposed between said two glass plates to form a spark chamber, a sparking gas enclosed in the spark chamber at normal pressure, and D.C. conductors connected to said electrode layers.

Claim 7

A spark chamber apparatus for detecting radiations comprising two glass plates each coated over the interior area of one face thereof with a thin layer of electroconductive transparent substance to form an electrode, a non-conductive covering glaze fused along the boundary zone between said electrode layer and the glass plate, a glazy frame fused to the perimeters of said two glass plates set apart in parallel facing each other at a distance of several millimeters by several pieces of non-electroconductive spacers interposed between said two glass plates to form a spark chamber, a sparking gas enclosed in the spark chamber at normal pressure, and D.C. conductors connected to said electrode layers.

Claim 8

A spark chamber apparatus for detecting radiations comprising two metal plates each coated over the interior area of one face thereof with a thin electroplated layer to form an electrode, a non-electroconductive covering glaze fused along the boundary zone between said electrode layer and the metal plate, a glazy frame fused to the perimeter of said two metal plates set apart in parallel facing each other at a distance of seveRal millimeters by a non-electroconductive spacing frame interposed between said two metal plates, a sparking gas enclosed at normal pressure in the spark chamber, and electric D.C. conductors connected to said electrode layers.

Claim 9

A spark chamber apparatus for detecting radiations comprising two metal plates each coated over the interior area of one face thereof with a thin electroplated layer to form an electrode, a non-electroconductive covering glaze fused along the boundary zone between said electrode layer and the metal plate, a glazy frame fused to the perimeter of said two metal plates set apart in parallel facing each other at a distance of seveRal millimeters by a non-electroconductive spacing frame interposed between said two metal plates, a sparking gas enclosed at normal pressure in the spark chamber, and electric D.C. conductors connected to said electrode layers.