Dineutron


Dineutron

A dineutron is a hypothetical particle consisting of two neutrons that was suggested to have a transitory existence in nuclear reactions produced by helions that result in the formation of a proton and a nucleus having the same atomic number as the target nucleus but a mass number two units greater. The dineutron hypothesis has been used in nuclear reactions with exotic nuclei for a long time.[1] Several applications of the dineutron in nuclear reactions can be found in review papers.[2]

Its existence has been proven to be relevant for nuclear structure of exotic nuclei.[3]

A system made up of only two neutrons is not bound, though the attraction between them is very nearly enough to make them so.[4] This has some consequences on nucleosynthesis and the abundance of the chemical elements.[5]

See also

References

  1. ^ Bertulani, C. A.; Baur, G. (1986). "Coincidence Cross-sections for the Dissociation of Light Ions in High-energy Collisions". Nuclear Physics A 480: 615. Bibcode 1988NuPhA.480..615B. doi:10.1016/0375-9474(88)90467-8. http://faculty.tamu-commerce.edu/cbertulani/cab/papers/NPA480_1988_615.pdf. 
  2. ^ Bertulani, C. A.; Canto, L. F.; Hussein, M. S. (1993). "The Structure And Reactions Of Neutron-Rich Nuclei". Physics Reports 226 (6): 281–376. Bibcode 1993PhR...226..281B. doi:10.1016/0370-1573(93)90128-Z. http://www.tamu-commerce.edu/physics/carlos/papers/PRep226_1993_281.pdf. 
  3. ^ Hagino, K.; Sagawa, H.; Nakamura, T.; Shimoura, S. (2009). "Two-particle correlations in continuum dipole transitions in Borromean nuclei". arXiv:0904.4775 [nucl-th]. 
  4. ^ MacDonald, J.; Mullan, D. J. (2009). "Big Bang Nucleosynthesis: The Strong Nuclear Force meets the Weak Anthropic Principle". arXiv:0904.1807 [astro-ph.CO]. 
  5. ^ Kneller, J. P.; McLaughlin, G. C. (2004). "The Effect of Bound Dineutrons upon BBN". Physical Review D 70: 043512. arXiv:astro-ph/0312388. Bibcode 2004PhRvD..70d3512K. doi:10.1103/PhysRevD.70.043512. 

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Look at other dictionaries:

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  • Dineutron — bineutronas statusas T sritis fizika atitikmenys: angl. bineutron; dineutron vok. Bineutron, n; Dineutron, n; Doppelneutron, n rus. бинейтрон, m; динейтрон, m pranc. bineutron, m; dineutron, m …   Fizikos terminų žodynas

  • dineutron — bineutronas statusas T sritis fizika atitikmenys: angl. bineutron; dineutron vok. Bineutron, n; Dineutron, n; Doppelneutron, n rus. бинейтрон, m; динейтрон, m pranc. bineutron, m; dineutron, m …   Fizikos terminų žodynas

  • Dineutron — dineutronas statusas T sritis fizika atitikmenys: angl. dineutron vok. Dineutron, n rus. динейтрон, m pranc. dineutron, m …   Fizikos terminų žodynas

  • dineutron — dineutronas statusas T sritis fizika atitikmenys: angl. dineutron vok. Dineutron, n rus. динейтрон, m pranc. dineutron, m …   Fizikos terminų žodynas

  • dineutron — noun A hypothetical particle consisting of two neutrons …   Wiktionary

  • dineutron — di·neutron …   English syllables

  • dineutron — (ˈ)dī+ noun Etymology: di + neutron : a neutral particle of twice the neutron s mass that is produced by collision of tritons and that is very unstable and quickly disintegrates into two neutrons …   Useful english dictionary

  • Neutronium — is a proposed name for a substance composed purely of neutrons. The word was coined by scientist Andreas von Antropoff in 1926 (before the discovery of the neutron itself) for the conjectured element of atomic number zero that he placed at the… …   Wikipedia

  • Tetraneutron — A tetraneutron is a hypothesised stable cluster of four neutrons. This cluster of particles is not supported by current models of nuclear forces. [Cierjacks, S. et al. (January 1965) Further Evidence for the Nonexistence of Particle Stable… …   Wikipedia


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