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| Higher than usual reading this morning from Fremont, CA https://www.netc.com:443/bb/viewtopic.php?f=23&t=1074 |
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| Author: | Morellio [ Wed Sep 10, 2014 11:26 am ] |
| Post subject: | Higher than usual reading this morning from Fremont, CA |
While I got an Arduino setup and intend to read the 5v pulses from my Inspector Alert to save the data, I have been monitoring the air for over a year now. This morning and last night were a bit startling, normally it hovers around 70-90cpm while on the air intake and around 20-30cpm while off by itself in the same area. Last night it hit 300 and it still seems to be climbing, this was just taken this morning. http://imgur.com/N8azQFc |
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| Author: | Morellio [ Wed Sep 10, 2014 12:01 pm ] |
| Post subject: | Re: Higher than usual reading this morning from Fremont, CA |
Here is the counter moved just off to the side for a few minutes. When I put it back, it jumped back up to the high 300s. Nabbed an energetic bit of dust, it seems. Will see how long it takes to decay. http://imgur.com/8WqlSXr |
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| Author: | Morellio [ Wed Sep 10, 2014 3:34 pm ] |
| Post subject: | Re: Higher than usual reading this morning from Fremont, CA |
As a very rough way of trying to determine what type of radiation it was (alpha, beta, gamma), I tried putting a piece of paper between the detector and the filter. There was little change. A CD did the trick though due to it's aluminum coating. Readings went back to normal when I put a CD between the filter and the counter, then back up when I removed it. Once I find a way to line my lungs with CDs I should be good to go. Here's why I was doing that: http://gakuran.com/eng/wp-content/uploa ... iation.png It would appear that the radionuclide(s) I am detecting is/are emitting primarily beta radiation. |
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| Author: | Morellio [ Fri Sep 12, 2014 6:31 pm ] |
| Post subject: | Re: Higher than usual reading this morning from Fremont, CA |
Still seeing 2-4x the norm of around 90 cpm, might have to change my filter. |
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| Author: | KingCobra [ Sun Sep 14, 2014 12:33 pm ] |
| Post subject: | Re: Higher than usual reading this morning from Fremont, CA |
Thanks for the update. |
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| Author: | Morellio [ Tue Sep 16, 2014 7:47 am ] |
| Post subject: | Re: Higher than usual reading this morning from Fremont, CA |
As of about 6 hours ago I'm reading back down to the double digits. Curious if it could be related to the solar flare. |
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| Author: | Morellio [ Mon Sep 22, 2014 3:53 pm ] |
| Post subject: | Re: Higher than usual reading this morning from Fremont, CA |
And back to 60cpm today. |
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| Author: | rustycase [ Sun Sep 28, 2014 3:54 pm ] |
| Post subject: | Re: Higher than usual reading this morning from Fremont, CA |
I am a couple hundred miles S of you and watched a 30% increase in cpm's for a period of time, without explanation. Then I considered it might be caused by that solar flare thingy... Heck! I dunno! Basking in the Socal sunlight! rc |
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| Author: | Morellio [ Mon Sep 29, 2014 6:33 pm ] |
| Post subject: | Re: Higher than usual reading this morning from Fremont, CA |
I thought about this as well, but how could an air filter be capturing particles of a solar flare, and why is the reading normal away from the filter? We got a whiff of something energetic, gotta wonder how much of it made its way into my lungs. There was a spike near San Diego reported, around the time the USS Reagan pulled into port. If you recall, this was the aircraft carrier that was heavily irradiated by fallout right after the reactors at Fuku started melting down/blowing up, and initially they were refused access to port almost anywhere. rustycase wrote: I am a couple hundred miles S of you and watched a 30% increase in cpm's for a period of time, without explanation. Then I considered it might be caused by that solar flare thingy... Heck! I dunno! Basking in the Socal sunlight! rc |
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| Author: | Morellio [ Thu Oct 02, 2014 2:24 pm ] |
| Post subject: | Just going to post here when I see spikes in Fremont, CA |
Until I can get my Inspector Alert online, will just post when I see unusually high readings just to get a date and timestamp. There are images of my setup at the top so the context of the readings should be pretty plain. Just crossed 300cpm this morning, after several days of 60-90cpm. |
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