Radon gas measurement apparatus having alpha...

Details Radon gas measurement apparatus having alpha... Radon gas measurement apparatus having alpha...

G - Physics

01

N

G01N 23/22 (2006.01) G01N 23/00 (2006.01) G01T 1/178 (2006.01) G01T 1/24 (2006.01) G01T 7/04 (2006.01)

Patent

CA 2161924

A radon detector employs an electrically charged pressed, porous metal filter that allows radon gas diffusion, while blocking ambient light, so that it readily traps both attached and unattached Po-214 and Po-218 ions, that may be present in gas passing through the filter, the filter being charged positively relative to an unbiased PN junction of a photodiode detector within a detection chamber. As a consequence, radon daughter products are prevented from corrupting the radon measurement. Since no voltage differential is applied across its PN junction, the photodiode detector operates in a photovoltaic mode, which avoids the problem of Schottky noise, producing low amplitude current pulses, which are amplified, passband filtered and thresholded to provide well-defined pulses that are counted over a given measurement interval and converted to radon concentration in terms of picocuries per liter.

Affiliated with

Also associated with

Rating

Radon gas measurement apparatus having alpha... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Radon gas measurement apparatus having alpha..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radon gas measurement apparatus having alpha... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1423914