Tag: radioactivity

Posted on

Radioactivity Decreasing Effect of 4-5 nm Silver Particles on K40

The Japan Radioisotope Association （JRIA） held its the 51th workshop of isotope and radiation researh at the University of Tokyo from July 7 to July 9. The program in Japanese is published here.

isotope1
Dr. Norio Abe and Dr. Shin Iwasaki made presentations about the experiments of radioactivity decreasing effect of 4-5 nm silver particles. The below is quoted from the program and translated to English by me.

Oral Presentation: July 7 (Mon) 10:00 to 11:00 radiation effect
Chair:     Masakazu Washio (Waseda University)
Radioactivity Decreasing Effect of 4-5 nm Silver Particles on Cs134 and Cs137 in Soil, and K40 in Potassium Fertilizer
IWASAKI, Shin (Center of General Education, Tohoku Institute of Technology)
ABE, Norio (a former staff of Japan Firefly Breeding Institute, Itabashi-ku, Tokyo)
SAKAMOTO,Kei; AYABE, Tokiyo; MOCHIZUKI, Shoji

Poster Presentation: July 7 (Mon) 11:30 – July 8 (Tue) 11:00
Early Experimentation Results of Radioactivity Decreasing Effect of 4-5 nm Silver Particles on Cs134 and Cs in Soil
ABE, Norio; SAKAMOTO, Kei; AYABE, Tokiyo; MOCHIZUKI, Shoji; IWASAKI, Shin

The oral presentation (in Japanese) was recorded by my friend and published the below url. Dr. Iwasaki said he thought the phenomenon might be a kind of LENR at about 11:47 of the video.
http://twitcasting.tv/shivaammachi/movie/77979733

Nano Silver

I report the most interesting experiment result in the above presentations in this article.
Dr. Abe and Dr. Iwasaki had been announced the experimental results that the radiation of the contaminated soil was reduced when they added nano sliver solutions to the soil. This presentation showed the new experiment that nano silver particles could decrease radiation of radioactive potassium (K40).

I think this result is very important in the following points.

  • Radioactivity decreasing effect of 4-5 nm silver particles was effective for K40 other than radioactive Cs. I think they expected the effect because they have found radioactivity decreasing effect for both Cs137 and Cs134.
  • Potassium fertilizer used in the experiment can be purchased by anyone. The key material, 4-5 nm silver particles, is shipped by UFS-REFINE company. Therefore, I expect reproduction of the experiment will become much easier.
    (If anyone wants to

My summary of presentation material for the oral presentation by Dr. Iwasaki is shown below.

  • K40 is radioactive material present in nature, 0.01% abundance ratio, T1/2 = 12 billion years.
  • Because the sensitivity of spectrometer (Clear Pulse Co., A2702) is low, a large amount of potassium fertilizer is required, then they filled U9 type standard container with Potassium fertilizer (76.7g).
  • As the first position (“up” position), they put the spectrometer horizontally at the bottom of the lead shielding box and put the U9 container on the spectrometer. As the second position (“down” position), they put the U9 container horizontally at the bottom of the lead shielding box and put the spectrometer on the U9 container. They regarded two measurements, up and down positions (each measurement takes 12 hours), as one unit and calculate the average of result values.
  • They started Series I experiment from February 12, 2013. After the initial measurement, they opened the container to check the content, and transferred the content to the tray. Then, they added 5 g of Talc powder supporting nano silver particles (300 ppm) to the content and stirred it. And they added 10 cc of collagen solution supporting nano silver particles (160 ppm) to the content and stirred it carefully. After the process, they returned the content in the U9 container and sealed the joint part of the lid by tape. They did 8 units of measurements until August 9. For the measurements, they also measured background radiation many times.
    (They watered UFS-CW20F to get suitable density (160 ppm) as collagen solution supporting nano silver particles.)
  • Because in the 8 units of measurements, they missed the down position measurements in 2 times, they showed the 6 units results. Each figure shows relative ratio to the initial radiation value. Each radiation value is calculated as
    [total number of photoelectric peak area of K40] – [background].

Feb 13 up, Feb 14 down (initial value):     1.00
Feb 15 up, Feb 16 down:     0.83
Feb 17 up, Feb 18 down:     0.87
Apr 8 up, Apr 9 down:     0.81
May 5 up, May 6 down:     0.79
Jun 27 up, Jun 27 down:     0.80
Jul 24 up, Jul 25 down:     0.77
Aug 9 up, Aug 9 down:     0.80

  • As the result, the decreasing ratio is about 20%. The estimated uncertainty of the average value taking into account the “up / down” difference is about 3% to 12% and the statistical uncertainty is under 2.5%.
  • On September 10, they opened the U9 container to check the content and injected 5cc of collagen solution supporting nano silver particles (20ppm) to the center of the content. From one day later, they started Series II measurements and they are going now. They obtain the similar result in the Series II.
  • In conclusion, they can set the hypothesis that 4-5 nm silver particles can decrease the radioactivity of K40, too.

I expect that other scientists will reproduce the experiment and find new technology to reduce radioactivity of huge volume of nuclear waste.

Cold Fusion Now!

 

 

Posted on

Nanoscale Ag may decrease radiation of Cesium 134 and 137 by LENR transmutation?

On  the week of Feb 5, the conference of “radiation detectors and their uses” was held in High Energy Accelerator Research Organization in Tsukuba city of Japan.  Japanese web site is (here) and Google translated one is (here).

In the conference, there was a very interesting presentation “Experiment and verification of the radioactive cesium decrease effect of nanoscale pure silver (Ag) with supporting material” for LENR watchers.  (This title is translated to English by me and may be inaccurate.)

The Japanese abstract (PDF document) was published (here) and p.69 and p.70 are for the presentation.

Experiment and verification of the radioactive cesium decrease effect of nanoscale pure silver (Ag) with supporting material

The author, Dr. Shin Iwasaki, a physicist and ex-professor of Tohoku University of Japan, describes the results of some experiments that the nanoscale Ag supported by bone charcoal and white granite or collagen liquid can decrease the radioactivity of the radioactive cesium in Fukushima prefecture of Japan in the laboratory.

In Fukushima, after the Fukushima Daiichi nuclear disaster of March 11, 2011, the soil and many houses were contaminated by radioactive cesium. To decontaminate, people had to wash roofs and walls by water, and remove the surface-soil containing the radioactive material.  The big problem is how to treat the washing water or removed soil, because we have no way to decrease the radioactivity.

Dr. Norio Abe, a biologist and the chief of Itabashi Firefly Ecosystem Center in Tokyo, thought of the idea to use nanoscale silver Ag to decontaminate radioactive soil because he had well-known the capability of nanoscale Ag to keep the environment clean for the firefly.  

Surprisingly, the radioactivity of the soil decreased after he had spread nanoscale Ag with collagen liquid.

While the reason or mechanism is unknown, he succeeded to decrease the radioactivity of contaminated water or soil in several fields in Fukushima.

In March 2012, Dr. Shin Iwasaki joined the group with Dr. Norio Abe and started to help verify the strange phenomenon.  Then in Nov 2012, after much trial and error, he was able to measure the effect. In the abstract, the main result is shown in Fig. 1.

He made the sample in U9-type container by combining the 4-5 nanometer Ag with bone charcoal and washing with water including Cesium.  He measured radioactivity by monitoring the gamma spectrum over a long period using Csl (T1) detector + 512ch MCA.  He said that his team payed attention to uniformity of the sample, self shielding, volatilization and location of the measuring instruments.  

While the natural half-life of Cs-134 is 2 years, and one of Cs-137 is 30 years, Dr. Iwasaki analysed the experiment and concluded there was a decrease in the “half-life” of radioactivity of these Cesium isotopes to about 1 or 2 months.

The graph of Fig. 1 shows the time series of the relative values of radioactivity to the original sample without nanoscale Ag.  For example,  “1.0” is the value of the original sample and “0.6” means the value is 60% of the original sample.  3P and LC shows the following values and the background radioactivity is reduced.

3P: sum of 3 peaks including 604keV of Cs-134, 661.6keV of Cs-137 and 795.7keV of Cs-134 and others.

LC: sum of continuous values under the 3 peaks.

Nano-silver-Fig-1

This experiment started at Dec 22, 2012 and ended at Jan 16, 2013.  In the first few days, the half-life of the radioactivity is equal to about 20 days,  He added 0.6 cc pure water to the sample and stirred at Jan 14, 2013 and the value started to decrease again.

This result is very impressive for me because the experimental system is simple and the effect is big. Dr. Shin Iwasaki suggested the phenomenon may be one kind of LENR.

Unfortunately, this project has little budget, and he can not analyze the mix of elements of the used sample.  In the abstract, he calls for other scientists to reproduce this experiment.  I hope they will too.  This phenomenon may help to decontaminate water and soil around the Fukushima Daiichi nuclear plant.

Cold fusion now!

Contact Toshiro Sengaku or go to Amateur-Lenr Wants To Know

Top