What is the half-life for spontaneous fission of various nuclei?

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SUMMARY

The discussion centers on the search for half-life data specifically for spontaneous fission of various nuclei. Levi, the original poster, seeks resources to find this information, distinguishing it from general decay emissions. Key resources provided include the Japan Atomic Energy Agency's chart of nuclides, Brookhaven National Laboratory's chart, and the Nuclear Data Services website. These resources offer detailed information on isotopes and their decay modes, including spontaneous fission data.

PREREQUISITES
  • Understanding of nuclear decay processes, including spontaneous fission.
  • Familiarity with isotopes and their half-lives.
  • Basic knowledge of nuclear data resources and charts.
  • Ability to navigate scientific databases and websites for nuclear information.
NEXT STEPS
  • Explore the Japan Atomic Energy Agency's chart of nuclides for detailed half-life data.
  • Investigate the Brookhaven National Laboratory's chart for additional isotopic information.
  • Learn how to interpret branching ratios and decay modes from nuclear data sources.
  • Research the implications of spontaneous fission in nuclear physics and its applications.
USEFUL FOR

Students in nuclear physics, researchers in nuclear science, and professionals working with radioactive materials will benefit from this discussion, particularly those focused on spontaneous fission and decay data.

levi
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I have an assignment for which I need the half-life of about 30 nuclei that decay through spontaneous fission. The total half-life is easy to find, but I need the half-life for spontaneous emission only. Does anyone know where I can find this?

thanks,
Levi
 
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Spontaneous fission or spontaneous emisson?

Generally decay or emission refers to emission of alpha, beta or gamma radiation. Fission means that the parent nuclei 'split' into two new nuclei in which the mass is much greater than an alpha particle.

In any event, try http://wwwndc.tokai-sc.jaea.go.jp/CN04/index.html - which is a site in Japan, which gives the chart of nuclides. Look at the top right corner.

Otherwise, an alternative is:
http://www.nndc.bnl.gov/chart is at Brookhaven (which also seems to have problems lately).

Another alternative is - http://nucleardata.nuclear.lu.se/nucleardata/toi/perchart.htm - click on the element, then select the isotope.

As far as I know, spontaneous fission is included in the half-life calculations. Sites usually give branching ratios or fractions (%) of decay modes.
 
Last edited by a moderator:
Spontaneous fission is what I meant, but I'm not to familiar with these terms in English...
Anyway, thank you very much for the links, that was just what i needed!
 

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