thanks to Hywel White for this surprising news: .001 variations in Si-32 and
Cl-36 beta decay on Earth from solar neutrinos: Rich Murray 2010.09.03 "So, what we're suggesting is that something that can't interact with anything is changing something that can't be changed." http://www.physorg.com/news202456660.html Radioactive decay rates vary with the sun's rotation: research August 31, 2010 by Elizabeth K. Gardner Radioactive decay rates, thought to be unique physical constants and counted on in such fields as medicine and anthropology, may be more variable than once thought. A team of scientists from Purdue and Stanford universities has found that the decay of radioactive isotopes fluctuates in synch with the rotation of the sun's core . The fluctuations appear to be very small but could lead to predictive tools forsolar flares and may have an impact on medical radiation treatments. This adds to evidence of swings in decay rates in response to solar activity and the distance between the Earth and the sun that Purdue researchers Ephraim Fischbach, a professor of physics, and Jere Jenkins, a nuclear engineer, have been gathering for the last four years. The Purdue team previously reported observing a drop in the rate of decay that began a day and half before and peaked during the December 2006 solar flare and an annual fluctuation that appeared to be based on the Earth's orbit of, and changing distance from, the sun, Jenkins said. "If the relationship between solar activity and decay rates proves to be true, it could lead to a method of predicting solar flares, which could help prevent damage to satellites and electric grids, as well as save the lives of astronauts in space," Jenkins said. "Finding that the decay rates fluctuate in a pattern that matches known and theoretical solar frequencies is compelling evidence for a solar influence on decay rates." Jenkins and Fischbach collaborated with Peter Sturrock, a professor emeritus of applied physics at Stanford University and an expert on the inner workings of the sun, to examine data collected at Brookhaven National Laboratory on the rate of decay of the radioactive isotopes silicon-32 and chlorine-36. The team reported in the journal Astroparticle Physics that the decay rate for both isotopes varies in a 33-day recurring pattern, which they attribute to the rotation rate of the sun's core. In general, the fluctuations that Jenkins and Fischbach have found are around a tenth of a percent from what is expected, as they've examined available published data and taken some measurements themselves. The team has not yet examined isotopes used in medical radiation treatments or for dating of ancient artifacts. "The fluctuations we're seeing are fractions of a percent and are not likely to radically alter any major anthropological findings," Fischbach said. "One of our next steps is to look into the isotopes used medically to see if there are any variations that would lead to overdosing or underdosing in radiation treatments, but there is no cause for alarm at this point. What is key here is that what was thought to be a constant actually varies and we've discovered a periodic oscillation where there shouldn't be one." Jenkins and Fischbach suggest that the changes in the decay rates are due to interactions with solar neutrinos, nearly weightless particles created by nuclear reactions within the sun's core that travel almost at the speed of light. It is estimated that about 60 billion solar neutrinos pass through a person's fingernail every second, but they are so weakly reactive that they pass right through the body without disturbing or changing anything, Jenkins said. "We haven't known the solar neutrino to interact significantly with anything, but it fits with the evidence we've gathered as the likely source of these fluctuations," he said. "So, what we're suggesting is that something that can't interact with anything is changing something that can't be changed." The Purdue team has ruled out the possibility of experimental error or an environmental influence on the detection systems that track the rate of decay as being responsible for the fluctuations and published a series of papers in the journals Astroparticle Physics, Nuclear Instruments and Methods in Physics Research, and Space Science Reviews. Sturrock said it is an effect that no one yet understands and that if it is not neutrinos that are responsible, then perhaps there is an unknown particle interacting with the atoms. "It would have to be something we don't know about -- an unknown particle that is also emitted by the sun and has this effect -- and that would be even more remarkable," he said. More information: Power spectrum analyses of nuclear decay rates, M.A. Silver et al., Astroparticle Physics, Volume 34, Issue 3, October 2010, Pages 173-178. doi:10.1016/j.astropartphys.2010.06.011 Provided by Purdue University (news : web) Astroparticle Physics Volume 34, Issue 3, October 2010, Pages 173-178 doi:10.1016/j.astropartphys.2010.06.011 Copyright © 2010 Published by Elsevier B.V. Power spectrum analyses of nuclear decay rates , f and B. Terryg, i a 411th Flight Test Squadron, 412th Test Wing, Edwards AFB, CA 93524, USA b Center for Space Science Astrophysics, Stanford University, Stanford, CA 94305, USA c St. John's College, Cambridge CB2 1TP, UK d Astrophysics Group, Cavendish Laboratory, Cambridge CB3 0HE, UK e Department of Physics, Purdue University, West Lafayette, IN 47907, USA f Detachment 220, Air Force Reserve Officer Training Corps, West Lafayette, IN 47907, USA g 47th Operations Support Squadron, 47th Flying Training Wing, Laughlin AFB, TX 78843, USA h School of Nuclear Engineering, Purdue University, West Lafayette, IN 47907, USA i Department of Physics, United States Air Force Academy, CO 80920, USA j Training Squadron 3, Training Air Wing 5, NAS Whiting Field, Milton, FL 32570, USA k 392nd Training Squadron, 30th Space Wing, Vandenberg AFB, CA 93437, USA Received 22 December 2009; revised 10 June 2010; accepted 30 June 2010. Available online 6 July 2010. Abstract We provide the results from a spectral analysis of nuclear decay data displaying annually varying periodic fluctuations. The analyzed data were obtained from three distinct data sets: 32Si and 36Cl decays reported by an experiment performed at the Brookhaven National Laboratory (BNL), 56Mn decay reported by the Children's Nutrition Research Center (CNRC), but also performed at BNL, and 226Ra decay reported by an experiment performed at the Physikalisch-Technische Bundesanstalt (PTB) in Germany. All three data sets exhibit the same primary frequency mode consisting of an annual period. Additional spectral comparisons of the data to local ambient temperature, atmospheric pressure, relative humidity, Earth-Sun distance, and their reciprocals were performed. No common phases were found between the factors investigated and those exhibited by the nuclear decay data. This suggests that either a combination of factors was responsible, or that, if it was a single factor, its effects on the decay rate experiments are not a direct synchronous modulation. We conclude that the annual periodicity in these data sets is a real effect, but that further study involving additional carefully controlled experiments will be needed to establish its origin. Keywords: Spectral analysis; Radioactive decay; Nuclear decay http://blogs.discovermagazine.com/80beats/2010/08/26/scientist-smackdown-are-solar-neutrinos-messing-with-matter/ blog debate 2010.08.26 Blogs / 80beats Scientist Smackdown: Are Solar Neutrinos Messing With Matter? "The big one, though, is number three: are we really seeing some kind of physics never seen before? Fischbach and Jenkins don't back off: "We agree that, according to current theory of the standard weak interaction, neutrinos should not be influencing decay rates. We also agree that Super-Kamiokande data are not anomalous. Our position is that either neutrinos have properties we do not yet understand, or some other particle or field behaving like neutrinos is influencing decay rates. In slightly more detail, we are not considering neutrino capture as in the case of Super-K. Rather we work in a picture where neutrinos pass through the sample of decaying nuclei, as they pass through everything else, and exchange an energy on the order of 10-100 eV. Given the sensitivity of beta decays and electron capture to the energy available, the exchange of a small amount of energy in this way could be sufficient to explain the observed effects." http://ie.lbl.gov/toi/nuclide.asp?iZA=140032 32Si 150 years beta 224.5 Kev 36Cl 3.01x10E5 years beta, or positron with neutrino _______________________________________________ Rich Murray, MA Boston University Graduate School 1967 psychology, BS MIT 1964, history and physics, 1943 Otowi Road, Santa Fe, New Mexico 87505 505-501-2298 [hidden email] Sondra Spies, DOM http://groups.yahoo.com/group/AstroDeep/messages http://RMForAll.blogspot.com new primary archive http://groups.yahoo.com/group/aspartameNM/messages group with 146 members, 1,609 posts in a public archive http://groups.yahoo.com/group/rmforall/messages participant, Santa Fe Complex www.sfcomplex.org _______________________________________________ ============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College lectures, archives, unsubscribe, maps at http://www.friam.org |
Stangely, I remember vaguely similar results being reported around 20
years ago, but nothing seemed to have come of it. Of course the current study may well have better statistics :). Cheers On Fri, Sep 03, 2010 at 11:24:53PM -0600, Rich Murray wrote: > thanks to Hywel White for this surprising news: .001 variations in > Si-32 and Cl-36 beta decay on Earth from solar neutrinos: Rich > Murray 2010.09.03 > > > "So, what we're suggesting is that something that can't interact > with anything is changing something that can't be changed." > > http://www.physorg.com/news202456660.html > > Radioactive decay rates vary with the sun's rotation: research > August 31, 2010 by Elizabeth K. Gardner > > Radioactive decay rates, thought to be unique physical constants and > counted on in such fields as medicine and anthropology, may be more > variable than once thought. > > A team of scientists from Purdue and Stanford universities has found > that the decay of radioactive isotopes fluctuates in synch with the > rotation of the sun's core > . > The fluctuations appear to be very small but could lead to > predictive tools forsolar flares and may have an impact on medical > radiation treatments. > > This adds to evidence of swings in decay rates in response to solar > activity and the distance between the Earth and the sun that Purdue > researchers Ephraim Fischbach, a professor of physics, and Jere > Jenkins, a nuclear engineer, have been gathering for the last four > years. > The Purdue team previously reported observing a drop in the rate of > decay that began a day and half before and peaked during the > December 2006 solar flare and an annual fluctuation that appeared to > be based on the Earth's orbit of, and changing distance from, the > sun, Jenkins said. > > "If the relationship between solar activity and decay rates proves > to be true, it could lead to a method of predicting solar flares, > which could help prevent damage to satellites and electric grids, as > well as save the lives of astronauts in space," Jenkins said. > "Finding that the decay rates fluctuate in a pattern that matches > known and theoretical solar frequencies is compelling evidence for a > solar influence on decay rates." > > Jenkins and Fischbach collaborated with Peter Sturrock, a professor > emeritus of applied physics at Stanford University and an expert on > the inner workings of the sun, to examine data collected at > Brookhaven National Laboratory on the rate of decay of the > radioactive isotopes silicon-32 and chlorine-36. > > The team reported in the journal Astroparticle Physics that the > decay rate for both isotopes varies in a 33-day recurring pattern, > which they attribute to the rotation rate of the sun's core. > > In general, the fluctuations that Jenkins and Fischbach have found > are around a tenth of a percent from what is expected, as they've > examined available published data and taken some measurements > themselves. > > The team has not yet examined isotopes used in medical radiation > treatments or for dating of ancient artifacts. > > "The fluctuations we're seeing are fractions of a percent and are > not likely to radically alter any major anthropological findings," > Fischbach said. > "One of our next steps is to look into the isotopes used medically > to see if there are any variations that would lead to overdosing or > underdosing in radiation treatments, but there is no cause for alarm > at this point. > What is key here is that what was thought to be a constant actually > varies and we've discovered a periodic oscillation where there > shouldn't be one." > > Jenkins and Fischbach suggest that the changes in the decay rates > are due to interactions with solar neutrinos, nearly weightless > particles created by nuclear reactions within the sun's core that > travel almost at the speed of light. > > It is estimated that about 60 billion solar neutrinos pass through a > person's fingernail every second, but they are so weakly reactive > that they pass right through the body without disturbing or changing > anything, Jenkins said. > > "We haven't known the solar neutrino to interact significantly with > anything, but it fits with the evidence we've gathered as the likely > source of these fluctuations," he said. > "So, what we're suggesting is that something that can't interact > with anything is changing something that can't be changed." > > The Purdue team has ruled out the possibility of experimental error > or an environmental influence on the detection systems that track > the rate of decay as being responsible for the fluctuations and > published a series of papers in the journals Astroparticle Physics, > Nuclear Instruments and Methods in Physics Research, and Space > Science Reviews. > > Sturrock said it is an effect that no one yet understands and that > if it is not neutrinos that are responsible, then perhaps there is > an unknown particle interacting with the atoms. > "It would have to be something we don't know about -- an unknown > particle that is also emitted by the sun and has this effect -- and > that would be even more remarkable," he said. > > More information: > Power spectrum analyses of nuclear decay rates, > M.A. Silver et al., > Astroparticle Physics, Volume 34, Issue 3, October 2010, Pages 173-178. > doi:10.1016/j.astropartphys.2010.06.011 > > Provided by Purdue University (news : web) > > > Astroparticle Physics > Volume 34, Issue 3, October 2010, Pages 173-178 > doi:10.1016/j.astropartphys.2010.06.011 > Copyright © 2010 Published by Elsevier B.V. > > Power spectrum analyses of nuclear decay rates , f and B. Terryg, i > a 411th Flight Test Squadron, 412th Test Wing, Edwards AFB, CA 93524, USA > b Center for Space Science Astrophysics, Stanford University, > Stanford, CA 94305, USA > c St. John's College, Cambridge CB2 1TP, UK > d Astrophysics Group, Cavendish Laboratory, Cambridge CB3 0HE, UK > e Department of Physics, Purdue University, West Lafayette, IN 47907, USA > f Detachment 220, Air Force Reserve Officer Training Corps, West > Lafayette, IN 47907, USA > g 47th Operations Support Squadron, 47th Flying Training Wing, > Laughlin AFB, TX 78843, USA > h School of Nuclear Engineering, Purdue University, West Lafayette, > IN 47907, USA > i Department of Physics, United States Air Force Academy, CO 80920, USA > j Training Squadron 3, Training Air Wing 5, NAS Whiting Field, > Milton, FL 32570, USA > k 392nd Training Squadron, 30th Space Wing, Vandenberg AFB, CA 93437, USA > Received 22 December 2009; revised 10 June 2010; accepted 30 June > 2010. Available online 6 July 2010. > > Abstract > > We provide the results from a spectral analysis of nuclear decay > data displaying annually varying periodic fluctuations. > The analyzed data were obtained from three distinct data sets: > 32Si and 36Cl decays reported by an experiment performed at the > Brookhaven National Laboratory (BNL), > 56Mn decay reported by the Children's Nutrition Research Center > (CNRC), but also performed at BNL, > and 226Ra decay reported by an experiment performed at the > Physikalisch-Technische Bundesanstalt (PTB) in Germany. > > All three data sets exhibit the same primary frequency mode > consisting of an annual period. > > Additional spectral comparisons of the data to local ambient > temperature, atmospheric pressure, relative humidity, Earth-Sun > distance, and their reciprocals were performed. > No common phases were found between the factors investigated and > those exhibited by the nuclear decay data. > This suggests that either a combination of factors was responsible, > or that, if it was a single factor, its effects on the decay rate > experiments are not a direct synchronous modulation. > We conclude that the annual periodicity in these data sets is a real > effect, but that further study involving additional carefully > controlled experiments will be needed to establish its origin. > Keywords: Spectral analysis; Radioactive decay; Nuclear decay > > > http://blogs.discovermagazine.com/80beats/2010/08/26/scientist-smackdown-are-solar-neutrinos-messing-with-matter/ > > blog debate 2010.08.26 > Blogs / 80beats > Scientist Smackdown: Are Solar Neutrinos Messing With Matter? > > "The big one, though, is number three: are we really seeing some > kind of physics never seen before? > Fischbach and Jenkins don't back off: > "We agree that, according to current theory of the standard weak > interaction, neutrinos should not be influencing decay rates. > We also agree that Super-Kamiokande data are not anomalous. > Our position is that either neutrinos have properties we do not yet > understand, or some other particle or field behaving like neutrinos > is influencing decay rates. > In slightly more detail, we are not considering neutrino capture as > in the case of Super-K. > Rather we work in a picture where neutrinos pass through the sample > of decaying nuclei, as they pass through everything else, and > exchange an energy on the order of 10-100 eV. > Given the sensitivity of beta decays and electron capture to the > energy available, the exchange of a small amount of energy in this > way could be sufficient to explain the observed effects." > > > http://ie.lbl.gov/toi/nuclide.asp?iZA=140032 > 32Si 150 years beta 224.5 Kev > 36Cl 3.01x10E5 years beta, or positron with neutrino > _______________________________________________ > > > Rich Murray, MA > Boston University Graduate School 1967 psychology, > BS MIT 1964, history and physics, > 1943 Otowi Road, Santa Fe, New Mexico 87505 > 505-501-2298 [hidden email] > Sondra Spies, DOM > > http://groups.yahoo.com/group/AstroDeep/messages > > http://RMForAll.blogspot.com new primary archive > > http://groups.yahoo.com/group/aspartameNM/messages > group with 146 members, 1,609 posts in a public archive > > http://groups.yahoo.com/group/rmforall/messages > > participant, Santa Fe Complex www.sfcomplex.org > _______________________________________________ > > > > ============================================================ > FRIAM Applied Complexity Group listserv > Meets Fridays 9a-11:30 at cafe at St. John's College > lectures, archives, unsubscribe, maps at http://www.friam.org -- ---------------------------------------------------------------------------- Prof Russell Standish Phone 0425 253119 (mobile) Mathematics UNSW SYDNEY 2052 [hidden email] Australia http://www.hpcoders.com.au ---------------------------------------------------------------------------- ============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College lectures, archives, unsubscribe, maps at http://www.friam.org |
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