X-ray fluorescence analyzer having means for producing...

Details X-ray fluorescence analyzer having means for producing... X-ray fluorescence analyzer having means for producing...

2006-05-05

2008-08-05

Yun, Jurie (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Fluorescence

C378S045000

Reexamination Certificate

active

07409037

ABSTRACT:
An X-ray fluorescence analyzer has a structure that defines a chamber (102). There is a window (103) to the chamber in a surface that is to come next to a sample (101) outside the chamber. The window (103) comprises a foil that is permeable to X-rays. A detector (104) receives fluorescent X-rays through said window (103). A low pressure source (508) is coupled to the chamber (102) and configured to controllably lower the pressure of a gaseous medium in the chamber (102) to a pressure value between 760 torr and 10 torr. The X-ray fluorescence analyzer maintains a lowered pressure of a value between 760 torr and 10 torr in the chamber (102) for the duration of an X-ray fluorescence measurement.

REFERENCES:
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patent: 5407641 (1995-04-01), Katschnig et al.
patent: 6909770 (2005-06-01), Schramm et al.
patent: 6922455 (2005-07-01), Jurczyk et al.
patent: 7072439 (2006-07-01), Radley et al.
patent: 62-280645 (1987-12-01), None

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