Device and method for counting elementary particles emitted by a fluid in a conduit
First Claim
1. A device for counting elementary particles emitted by a fluid, the device comprising a line for transferring the fluid and, placed outside said line, counters for capturing and counting the elementary particles which are attenuated by a wall of said line and/or by the fluid before they reach said counter, the device including at least one counting portion of oblong cross section which joins together two adjacent portions of this line and which has an internal height (h)/internal width (l) ratio of 20% or less, in which the internal height and the internal width represent the smallest and largest transverse dimensions respectively of said counting portion, these being measured along two approximately perpendicular directions, said counters extending outside this portion transversely to said counting portion, facing its entire internal width and on either side thereof.
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Accused Products
Abstract
The invention relates to a device and a method for counting elementary particles emitted by a fluid, the device comprising a line for transferring the fluid and, outside the line, detection means (6a) for detecting the particles that are attenuated by a wall of the line and/or by this fluid.
A counting device according to the invention includes at least one counting portion (4a) of oblong cross section which joins together two adjacent portions of the line having a larger flow section and which has an [internal height (h)/internal width (l)] ratio of 20% or less, in which the internal height and the internal width represent the smallest and largest transverse dimensions respectively of the portion, these being measured along two approximately perpendicular directions, said detection means extending transversely to this portion, facing its entire internal width and on either side thereof.
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Citations
18 Claims
- 1. A device for counting elementary particles emitted by a fluid, the device comprising a line for transferring the fluid and, placed outside said line, counters for capturing and counting the elementary particles which are attenuated by a wall of said line and/or by the fluid before they reach said counter, the device including at least one counting portion of oblong cross section which joins together two adjacent portions of this line and which has an internal height (h)/internal width (l) ratio of 20% or less, in which the internal height and the internal width represent the smallest and largest transverse dimensions respectively of said counting portion, these being measured along two approximately perpendicular directions, said counters extending outside this portion transversely to said counting portion, facing its entire internal width and on either side thereof.
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16. A particle counting device for counting of elementary particles emitted by a fluid, the device comprising a line for transferring the fluid and, placed outside said line, detection means for detecting the particles, said particles being attenuated by a wall of said line and/or by the fluid, the device including at least one counting portion of oblong cross section which joins together two adjacent portions of said line having a larger flow section and which has an internal height (h)/internal width (l) ratio of 20% or less, in which the internal height and the internal width represent the smallest and largest transverse dimensions respectively of said counting portion, these being measured along two approximately perpendicular directions, said detection means extending transversely to said counting portion, facing its entire internal width and on either side thereof, and wherein said counting portion has a wall thickness e, expressed in μ
- m, and a density d, expressed in g/cm3, the product e×
d of which is less than 100, in such a way that the attenuation by the counting portion of particles to be counted is minimized when these particles are electrons or positrons coming from beta-radioactive radiation emitted by said fluid. - View Dependent Claims (17, 18)
- m, and a density d, expressed in g/cm3, the product e×
Specification