Mechanism of α decay - truth about structure of nuclei

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Discussion Overview

The discussion revolves around the mechanism of α decay and the structure of atomic nuclei, exploring theoretical perspectives and models related to these topics. Participants express various hypotheses regarding the binding of α particles and the nature of nuclear oscillations, while also referencing historical theories and modern interpretations.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants propose that heavy nuclei undergoing α decay consist of loosely bound α particles and extra neutrons, suggesting a need for a theoretical framework that supports this view.
  • Others challenge this perspective, asserting that the initial claim is incorrect and seeking clarification on the basis of such assumptions.
  • A participant provides links to the semi-empirical mass formula and the liquid drop model as potential resources related to the discussion.
  • A link to a quantum mechanical theory of α decay is shared, with a note on the historical context of the Gamow theory, which some view as outdated yet still possessing qualitative insights.
  • Another participant mentions that while Gamow's model has some merit in explaining α decay through tunneling of preformed α particles, more realistic models are necessary for quantitative analysis.
  • Questions arise regarding the concept of nuclear null oscillations, with one participant theorizing that these oscillations may lead to α decay.
  • There is a request for clarification on what nuclear null oscillations are, alongside a recommendation for a book on nuclear physics.
  • Some participants express frustration over the discussion of personal theories, emphasizing the need for references to established literature.

Areas of Agreement / Disagreement

The discussion contains multiple competing views, with no consensus reached on the nature of α decay or the validity of the proposed theories regarding nuclear structure and oscillations.

Contextual Notes

Participants reference various theories and models, but there are limitations in the assumptions made regarding the binding of α particles and the existence of nuclear null oscillations. The discussion also highlights the historical context of certain theories without resolving their relevance to current understanding.

H Tomasz Grzybowski
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α decay probably implies that heavy enough nuclei which undergo this decay, consist relatively loosely bound α particles and extra neutrons.
I haven't found any theory which views nuclei in this way.
I value truth in science, and would like to know it, also regarding stucture of nuclei
and mechanism of α decay.
 
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H Tomasz Grzybowski said:
α decay probably implies that heavy enough nuclei which undergo this decay, consist relatively loosely bound α particles and extra neutrons.
I haven't found any theory which views nuclei in this way.
I value truth in science, and would like to know it, also regarding stucture of nuclei
and mechanism of α decay.
Please post links to the journal articles you've been reading about your question. Thank you.
 
H Tomasz Grzybowski said:
α decay probably implies that heavy enough nuclei which undergo this decay, consist relatively loosely bound α particles and extra neutrons.
I don't know how you got that impression (see also post 2), but it is wrong.
 
According to Wikipedia, the Gamow theory presented on that page dates from 1928, i.e. two years after Schrödinger published his famous equation. It's commonly seen in introductory modern physics textbooks, but it should be viewed as a historical or heuristic device. Nuclear theory has come a long way since 1928.
 
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Likes   Reactions: DrClaude
That's indeed true, but there is some truth in Gamov's model since ##\alpha##'s are pretty strongly bound beasts and thus many nuclei show some clustering of ##\alpha##'s, and Gamov's model understanding ##\alpha## decay as tunneling of such "preformed" ##\alpha##'s is a nice qualitative picture of the process. To be quantitative you have to use more realistic models of nuclear structure, of course.
 
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Likes   Reactions: DrClaude
So it looks like we should believe inexistence of nuclear null oscllations. Can the energy of these oscillations be calculated
using Planck constant h = 6.6267⋅10^-34 J⋅s ?
 
  • #10
I theorize myself. It seems natural to think that there are some oscillations which after some time lead to α decay.
And it looks like these oscillatons are incessant. So it invokes the idea of null oscilations.
 
  • #11
H Tomasz Grzybowski said:
I theorize myself. It seems natural to think that there are some oscillations which after some time lead to α decay.
And it looks like these oscillatons are incessant. So it invokes the idea of null oscilations.
It is against our rules to discuss personal theories. Additionally, the question
vanhees71 said:
What are nuclear null oscillations? Which book on nuclear physics are you reading?
is still unanswered.

If you can quote a paper or textbook which you refer to, please let me know via PM.
For the moment, this thread will be closed.
 

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