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Radiation Detected!

Turn Your Smart Phone into a Radiation Detector
September 7th, 2011 5:02 AM
Hello all;
Friday morning I came across an interesting app for the Android Smartphone and Tablet platform, Claus Buszello’s Original Geiger Cam. Someone has actually written a radiation detector code that works on the Android Platform. It uses the camera to detect gamma rays, cosmic rays and muons.
I downloaded it for $1.49 US and decided that if it didn’t work, I really hadn’t blown a lot of money. At least I had some toy software for my phone.
This afternoon I tested it with my Sears Tower Radium Check Source (It still glows in the dark!). My smartphone is a Samsung Galaxy S variation known as the T-Mobile Vibrant. It has a 1,000 MHz processor, 512 mb of Ram, and a 5 mp Camera. The check source measures 1 mR/hr gamma and 10,000 cpm total counts with a Monitor 4ec (LND712 gm Tube)
Drawbacks, the program measures in Hertz, not mR/hr or mSv/hr, so it is not going to be mistaken as a serious rad detector (at least at this time). It does measure events and gives a count, and how many pixels where stimulated by the event, so it seems to act like a scaler, except you cannot get counts per minute, unless you reset it and count again.
Here are my results of 5 tests over 10 minutes:
     No Source             With Source
1)   3 cpm                  14 cpm
2)   20 cpm                57 cpm
3)   7 cpm                  8 cpm
4)   42 cpm                84 cpm
5)   56 cpm                89 cpm
For some reason it appears to get more sensitive the longer it is used. I am not ready to give up my PM1703m or other GM Counters, and I have only tested this with Ra 226, however, for only $1.55 it looks like a cheap radiation detector alternative. It is not very sensitive, but it does work with my phone and is written by a gentleman that works at Cern!
It appears to be true, there is an App for everything!

Posted in:General
Posted by Chris Cavanaugh on September 7th, 2011 5:02 AMPost a Comment

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this, but Allison igenros what his own reference says.Quit while you’re behind. Reply

Posted by Clinton on February 10th, 2012 1:52 PM
Confused by the comment, but I will allow almost any civil post. Actually Allison's question is not a bad one, and fair. My Digilert Geiger counter measures in CPM, as well as my Dosimeter 3700. Background on the Digilert is 13 CPM Average, Dosimeter 3700 with Pancake probe is 30 to 60 CPM (analog meter) and with a Ludlum 16 and a Scintillator probe anywhere between 10,000 and 50,000 CPS (Counts Per Second)! However all translates to 4 to 8 microRoentgens per hour.

Posted by Chris Cavanaugh on February 10th, 2012 2:09 PM

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