A SPARK STAND ASSEMBLY FOR AN OPTICAL EMISSION SPECTROSCOPY INSTRUMENT

    公开(公告)号:EP4300057A1

    公开(公告)日:2024-01-03

    申请号:EP22182557.3

    申请日:2022-07-01

    Inventor: PETERS, André

    Abstract: According to an example embodiment, a spark stand assembly (120) for an optical emission spectroscopy, OES, instrument (100) is provided, the spark stand assembly (120) comprising: a spark stand body (121) attached to a mounting flange (122) that enables attaching the spark stand assembly (120) to a main housing (110) of the OES instrument (100); an exciter (123, 123a) disposed into a recess arranged on a top surface of the spark stand body (121); an elevated portion (124) arranged on the top surface of the spark stand body (121) adjacent to the mounting flange (122); an elongated notch (125) arranged on the top surface of the spark stand body (121) and connecting said recess to a passageway through the elevated portion (124); a spark stand plate (130) that is detachably attachable on the top surface of the spark stand body (121) to cover said recess, said notch (125) and at least part of the elevated portion (124) such that said recess forms a plasma chamber and said notch (125) forms a part of an optical transmission path from the plasma chamber to said passageway, wherein the spark stand plate (130) comprises an opening (131) therethrough for exposing a part of a sample (140) positioned on the opening (131) for excitation from the exciter (123, 123a), said opening (131) positioned such that said opening (131) is spatially aligned with the exciter (123, 123a) when the spark stand plate (130) is attached on the top surface of the spark stand body (121); and a sealing member arranged between the top surface of the spark stand body and the spark stand plate such that it encloses said recess and said notch and is routed over the elevated portion.

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