In physics, mirror nuclei are a pair of isobars of two different elements where the number of protons of isobar one (Z1) equals the number of neutrons of isobar two (N2) and the number of protons of isotope two (Z2) equals the number of neutrons in isotope one (N1); in short: Z1 = N2 and Z2 = N1. This implies that the mass numbers of the isotopes are the same: N1 + Z1 = N2 + Z2.
Pairs of mirror nuclei have the same spin and parity. If we constrain to odd number of nucleons (A=Z+N) then we find mirror nuclei that differ from one another by exchanging a proton by a neutron. Interesting to observe is their binding energy which is mainly due to the strong interaction and also due to Coulomb interaction. Since the strong interaction is invariant to protons and neutrons one can expect these mirror nuclei to have very similar binding energies.[1][2]
In 2020 strontium-73 and bromine-73 were found to not behave as expected.[3]
Referencesedit
^Cottle, P. D. (2002-04-12). "Excitations in the Mirror Nuclei 32Ar and 32Si". Physical Review Letters. 88 (17): 172502. Bibcode:2002PhRvL..88q2502C. doi:10.1103/PhysRevLett.88.172502. PMID 12005747. Retrieved 2018-01-08.
^Kamat, Sharmila (2002-04-23). "Focus: Gazing into a Nuclear Mirror". Physics. 9. American Physical Society. Retrieved 2016-04-11.
^Discovery by UMass Lowell-led team challenges nuclear theory
April 08, 2024
mirror, nuclei, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, february, 2. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Mirror nuclei news newspapers books scholar JSTOR February 2013 Learn how and when to remove this template message In physics mirror nuclei are a pair of isobars of two different elements where the number of protons of isobar one Z1 equals the number of neutrons of isobar two N2 and the number of protons of isotope two Z2 equals the number of neutrons in isotope one N1 in short Z1 N2 and Z2 N1 This implies that the mass numbers of the isotopes are the same N1 Z1 N2 Z2 Examples of mirror nuclei include Isobar 1 Z1 N1 Isobar 2 Z2 N23H 1 2 3He 2 114C 6 8 14O 8 615N 7 8 15O 8 724Na 11 13 24Al 13 11Pairs of mirror nuclei have the same spin and parity If we constrain to odd number of nucleons A Z N then we find mirror nuclei that differ from one another by exchanging a proton by a neutron Interesting to observe is their binding energy which is mainly due to the strong interaction and also due to Coulomb interaction Since the strong interaction is invariant to protons and neutrons one can expect these mirror nuclei to have very similar binding energies 1 2 In 2020 strontium 73 and bromine 73 were found to not behave as expected 3 References edit Cottle P D 2002 04 12 Excitations in the Mirror Nuclei 32Ar and 32Si Physical Review Letters 88 17 172502 Bibcode 2002PhRvL 88q2502C doi 10 1103 PhysRevLett 88 172502 PMID 12005747 Retrieved 2018 01 08 Kamat Sharmila 2002 04 23 Focus Gazing into a Nuclear Mirror Physics 9 American Physical Society Retrieved 2016 04 11 Discovery by UMass Lowell led team challenges nuclear theory Retrieved from https en wikipedia org w index php title Mirror nuclei amp oldid 1182874357, wikipedia, wiki, book, books, library,
