Binding energy and favorable reactions

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SUMMARY

The discussion centers on the energetics of the nuclear reaction 2H + 4He -> 6Li, specifically examining its favorability based on binding energies. Participants confirm that the combined binding energy of the reactants (2H and 4He) is less than that of the product (6Li), indicating that the reaction is energetically favorable. The calculation provided shows that the total binding energy for the reactants is 30 MeV, while that for the product is 31.8 MeV. Additionally, it is noted that an extra photon is required to conserve energy and momentum in the reaction.

PREREQUISITES
  • Understanding of nuclear binding energy concepts
  • Familiarity with the binding energy per nucleon curve
  • Basic knowledge of nuclear reactions and conservation laws
  • Ability to perform energy calculations in nuclear physics
NEXT STEPS
  • Research the binding energy per nucleon curve for various isotopes
  • Learn how to calculate binding energies for nuclear reactions
  • Explore the role of photons in nuclear reactions and conservation laws
  • Study the implications of binding energy in nuclear stability and reactions
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Nuclear physics students, educators, and researchers interested in understanding nuclear reactions and binding energy calculations.

letec
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[Moderator note: Thread moved from technical section, thus no template is shown]

Hi everyone!
I'm currently learning nuclear physics and I have a question:
Watching the binding energy per nucleon curve, is the following reaction energetically favorable?
2H + 4He -> 6Li
And why?
500px-Binding_energy_curve_-_common_isotopes.svg.png

Thanks!
 
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Why don't you take the values from the diagram and check for yourself? Better (more accurate): Look up the binding energies (or the masses) and calculate it.
 
mfb said:
Why don't you take the values from the diagram and check for yourself? Better (more accurate): Look up the binding energies (or the masses) and calculate it.
The question asks to answer according to the curve :\
 
I moved you to the homework section.

Well, then use the diagram and check it.
 
mfb said:
I moved you to the homework section.

Well, then use the diagram and check it.
That's exactly my question... The binding energy of the 4He is bigger than the B.E of the product. Is that it? or is there something more?
 
What about the binding energy of deuterium?
 
mfb said:
What about the binding energy of deuterium?
well it's smaller! and that is my question!
 
No, that is the homework question.

What is the combined binding energy of D+4He?
 
mfb said:
No, that is the homework question.

What is the combined binding energy of D+4He?
do you mean for 2H + 4He -> 6Li:
2*1 MeV + 4*7MeV = 30MeV < 6*5.3 = 31.8 therefore the reaction is energetically favorable?
 
  • #10
Sure.

To conserve energy and momentum, you would need an additional photon in the final state.
 
  • #11
mfb said:
Sure.

To conserve energy and momentum, you would need an additional photon in the final state.
Thanks for the help! :)
 

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