What are the predicted byproducts of a He 3 and Be 9 fusion reaction?

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Discussion Overview

The discussion centers on the predicted byproducts of a fusion reaction between helium-3 (He-3) and beryllium-9 (Be-9). Participants explore various potential outcomes of this reaction, including the formation of stable isotopes and the conditions under which these products might occur.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants propose that the most commonly predicted byproducts of the He-3 and Be-9 fusion reaction are three alpha particles (He-4), with two being high energy and one lower energy.
  • Others suggest that carbon-12 plus gamma radiation could be a likely outcome, questioning whether this has been ruled out by any reasoning.
  • One participant expresses uncertainty about the reaction cross sections and seeks references for experimental data on the reaction.
  • Another participant mentions that the end products could also include either three alpha particles or two lithium-6 nuclei.
  • Links to studies are provided that detail various reaction pathways, including Be-9 + He-3 leading to B-11 + proton and C-11 + neutron.
  • There is a suggestion that fusion producing only gamma radiation is unlikely, although it is acknowledged that it can occur under certain conditions.
  • One participant expresses surprise at the number of possible reaction outcomes and notes the interest in determining which reaction has the highest likelihood of occurring.

Areas of Agreement / Disagreement

Participants express a range of views on the possible byproducts of the fusion reaction, with no consensus reached on which outcomes are most likely. Multiple competing models and predictions remain under discussion.

Contextual Notes

Participants note the importance of reaction cross section data, which may influence the likelihood of different byproducts occurring. There is also an acknowledgment of the complexity of the reaction pathways involved.

Salman2
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If a stable He 3 particle [PNP] hits a stable Be 9 isotope, would not three stable alpha (He-4) be the most commonly predicted byproducts of this fusion reaction, resulting with two alpha with high energy, the third with lower energy ?

If not, what more common byproducts are predicted from this fusion reaction. Thanks to anyone for explanation.
 
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Salman2 said:
If a stable He 3 particle [PNP] hits a stable Be 9 isotope, would not three stable alpha (He-4) be the most commonly predicted byproducts of this fusion reaction, resulting with two alpha with high energy, the third with lower energy ?

If not, what more common byproducts are predicted from this fusion reaction. Thanks to anyone for explanation.

I have no idea of the different reaction cross sections (not my area of knowledge), but my first guess would be carbon 12 plus gammas as the most likely. Have you ruled this out by some chain of reasoning?
 
To PAllen: Thank you for reply. No, I have not ruled out C-12 + gamma. I wonder if reaction cross section data exist for the reaction I presented ? Would you know a general reference that would list such experimental data ?
 
Here's a relevant link, where the end products in the study are either three alphas or two lithium-6's.
 
Here is a link that includes data on Be-9 + He-3 -> B-11 + p

http://prola.aps.org/abstract/PR/v158/i4/p957_1

and for Be-9 + He-3 -> C-11 + n

http://prl.aps.org/abstract/PRL/v2/i3/p104_1

I am beginning to suspect that fusion producing only gamma is very unlikely.

Wait! It does occur:

http://www.sciencedirect.com/science/article/pii/0029558264904456

And another on the reaction you asked about:

http://www.sciencedirect.com/science/article/pii/0031916364911709
 
Last edited:
To Bill K & PAllen: Thank you very much. More reaction possibilities than I at first expected.

Very interesting that two possibilities result in stable clusters (1) three alpha clusters or (2) two Li-6 clusters, both being possible internal nucleon configurations that would yield stable C-12 isotope. Next I need to work on determining which of all the reported reaction possibilities has highest expectation to occur.
 

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