iPhone Application Measures Ambient Radioactivity

in Utilities (E)

[prMac.com] La Combe De Lancey, France - iRad is an iPhone application intended for civil protection after a nuclear plant meltdown; it can be used to quickly check if the ambient radioactivity level is very high, to measure ambient radioactivity, and to view on a map all measurements performed by the app users, all this at a fraction of the cost of a dedicated Geiger counter.

The application contains a proprietary algorithm which detects gamma and X rays passing through the iPhone back side camera chip. The number of hits per time unit is then used to compute the ambient radioactivity level.Performance has been tested in a nuclear research center, using different radioactivity sources (Cs-137, Co-60, Sr-90, Na-22) and an X-Ray generator. The calibration is made with a Cs-137 source (one of the main radioactive isotopes released in a nuclear reactor meltdown).

All measures are collected along with their geographical location, and contribute to building a world-wide radioactivity map that does not depend on official or governmental data or authorization. Measures are shown on a most-recent first basis, and are displayed in red or green, depending on a threshold value that is easily set by a slider - this facilitates analysis of the data and visualization of the 'hot points'.

The detector yield is lower than for a dedicated sensor, so measures take longer (up to one hour). The accuracy increases with the level measured, and it is good enough (20%) when ambient radioactivity reaches a dangerous level.

Using this application requires to temporarily occult the camera window. For that purpose, iPhone 4 models can be placed on a flat, opaque surface such as a table. Put a small piece of cardboard over the camera window, and attach it to the iPhone using some adhesive material, for 3GS devices.

Supported Languages:
* US English, French and Japanese

Device Requirements:
* iPhone 3GS, iPhone 4
* iPad 2 Wi-Fi, and iPad 2 Wi-Fi + 3G
* Requires iOS 4.0 or later
* 0.2 MB

Pricing and Availability:
iRad 1.0.5 is $5.99 USD (or equivalent amount in other currencies) and available worldwide exclusively through the App Store in the Utilities category.

MSS is a French company specializing in innovative, mixed mobile/server solutions. Copyright (C) 2011 MSS. All Rights Reserved. Apple, the Apple logo, iPhone, iPod and iPad are registered trademarks of Apple Inc. in the U.S. and/or other countries.