It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Fukushima governor apologizes for deletion of data about predicted spread of radiation
FUKUSHIMA -- Gov. Yuhei Sato apologized on April 25 over prefectural government officials' deletion of data on the predicted spread of radiation following the outbreak of the crisis at the crippled Fukushima No. 1 Nuclear Power Plant in March 2011.
At a regular news conference on April 25, Sato said, "A big problem lies in the fact that we failed to fully share the information soon after the nuclear disaster broke out."
Originally posted by ErtaiNaGia
reply to post by Partygirl
Hey Partygirl, would you be so kind as to provide the Manufacturer, Make, and Model of the dosimeter Geiger counter you are using?
Basically any information we could use to determine the specifics of the type of radiation it measures?
That would be a great help... thanks!
0.600000 Sieverts of absorbed radiation per HOUR.
about 0.4 per Sv,
IT sats "MC" in a circle and the number is "RM-2021". The maker is Chinese. All the writing on it is in chinese.
Apparently this model is fairly common in Japan after the quake.
Getting low readings today. 0.6 uSv/h inside just now as I type this.
Originally posted by ipsedixit
Here's a suggestion for an experiment you could conduct. I'm not a scientist, so the science minded might be able to improve on this idea.
Get a coffee filter of the cone shaped variety, made out of porous paper and an atomizer (mist sprayer) of some sort to spray water at it, then take readings with your dosimeter. Spray just enough to moisten the filter, not to soak it. You could spray every day in the same manner. If radioactive particles are present and if you just spray enough to moisten but not soak the filter, you should begin to see an increase in your detector readings.
Also take readings of your clothing, particularly outer garments, like coats or sweaters that you might always wear when you are outdoors. These kinds of clothing, especially if made of wool or cotton act like filters for airborne particles.
Filters are like the human lungs or the human body. The ambient air for any given reading might be normal, but over time there could be a dangerous build up of radioactive particles collected by any filter.
Good luck. I would love to vist Japan myself.
edit on 25-4-2012 by ipsedixit because: (no reason given)
Originally posted by ErtaiNaGia
Okay, thank you for this information... It appears that the model that you have, only measures Electromagnetic Radiation (X-Rays, Gamma Rays), and does not measure Alpha, Beta, or Neutron Radiatio.]
Does this mean its useless, then? If it doesn't measure those other types?
And from the isotopes that were released, they emit roughly equal amounts of the radiation that your detector can detect, and the radiation that your detector cannot detect...
Originally posted by Partygirl
None of these are particularly high. I suppose the geiger could be broken or not synched right, to play the skeptic. I still need to verify it against a known source of radiation. Not sure how I'm going to do that yet.
Your information is very helpful!
Now, it seems to me, based on what you said, that my geiger only measures a limited amount of the actual radiation. However, using the proportions, I should be able to estimate the actual uSv/h value, right?
By multiplying the amount I get by some percentages, correct?
So that would suggest that I should be doubling the readings my machine picks up, right?
Iodine-131 has 2 possible decay paths:
1. Releasing a 333.8 KeV Electron, and then a 636.9 KeV Gamma ray (7.17% of the time)
2. Releasing a 606.3 KeV Electron, and then a 364 KeV Gamma Ray (81.7% of the time)