What is the meaning of decay mode IT in nuclear physics ?

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Discussion Overview

The discussion centers on the meaning of the decay mode IT (Isomeric Transition) in nuclear physics, particularly in the context of nuclear decay charts. Participants explore the characteristics and examples of this decay mode.

Discussion Character

  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • Some participants express confusion regarding the meaning of IT when it is indicated as 100% in decay modes.
  • A participant provides a definition of IT as isomeric transition, describing it as the decay of a long-lived nuclear state via gamma or internal conversion.
  • Another participant elaborates that IT refers to the decay of a nuclear isomer, noting that these isomers have unusually long half-lives, and cites Tc99m as an example, mentioning its energy and half-life.

Areas of Agreement / Disagreement

Participants generally agree on the definition of IT as isomeric transition, but there is ongoing confusion regarding its representation in decay modes, and no consensus is reached on the implications of a 100% indication.

Contextual Notes

Some assumptions regarding the understanding of decay modes and the specific characteristics of isomeric transitions may be missing, and the discussion does not resolve the implications of the 100% designation.

HemKo
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I showed beta decay in decay mode of Nuclear chart..but I couldn't find what is the meaning if IT 100%..
 
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HemKo said:
I showed beta decay in decay mode of Nuclear chart..but I couldn't find what is the meaning if IT 100%..
Could you point out an example for us ?
 
HemKo said:
I showed beta decay in decay mode of Nuclear chart..but I couldn't find what is the meaning if IT 100%..

IT = Isomeric Transition. It indicates decay of a long lived nuclear state (an isomer) via a gamma or internal conversion.
 
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IT refers to isomeric transition. It is the decay of a nuclear isomer an excited state of a nucleus that has an unusually long half -life. A great example is Tc99m in which the first excited state of Tc99 has an energy of 0.141 MeV and a half-life of 6.02 hrs. The m stands for metastable.
 
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