发明名称 |
COMPTON-EFFECT METHOD AND SYSTEM FOR LOCATING A PLANE SEPARATING TWO MEDIA OF DIFFERENT DENSITIES |
摘要 |
A method and a system for enabling high accuracy measurements to be obtained of the location of a plane separating two media of different densities by using the Compton effect, and application thereof to measuring the thicknesses of layers. A measurement assembly constituted by a transmitter and a receiver of X-rays or gamma rays which are focused in emission and in reception irradiates an elementary volume of said media, and is displaced perpendicularly to the plane between said media, and a fifth signal is calculated representative of the extent by which the derivative of the detected signal relative to the displacement exceeds a threshold, after which the barycenter of displacements corresponding to the most recent sequence of said same-sign fifth signals is calculated, with the displacements being weighted by the corresponding one of said fifth signals.
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申请公布号 |
US5195116(A) |
申请公布日期 |
1993.03.16 |
申请号 |
US19920823818 |
申请日期 |
1992.01.22 |
申请人 |
SOCIETE ANONYME DITE: AEROSPATIALE SOCIETE NATIONALE INDUSTRIELLE |
发明人 |
LE FLOC'H, CHRISTIAN M.;SARRAZIN, PIERRE;BABOT, DANIEL M.;PEIX, GILLES G. |
分类号 |
G01B15/00;G01B15/02;G01N23/20 |
主分类号 |
G01B15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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