Your English writing platform
Discover LudwigExact(6)
The effect of the proton shell however is relatively weak and model-dependent.
The even-even cadmium isotopes are part of an interesting region near the closed proton shell at Z = 50, while the number of neutrons in the open shell is larger, as such these nuclei have been commonly considered to exhibit vibration-like properties [4].
Initially, by analogy with the neutron magic number 126, the next proton shell was also expected to occur at element 126, much too far away from the synthesis capabilities of the mid-20th century to achieve much theoretical attention.
However, in 1966, new predictions arrived that expected the next proton shell to occur instead at element 114, because of changed values for the potential and spin-orbit interaction in this region of the periodic table, and that the stabilization would make nuclides in this region as stable against spontaneous fission as many stable heavy nuclei such as lead-208.
The isotope 254No is especially interesting theoretically as it is in the middle of a series of prolate nuclei from 231Pa to 279Rg, and the formation of its nuclear isomers (of which two are known) is controlled by proton orbitals such as 2f5/2 which come just above the spherical proton shell.
Evidence for the magicity of the Z=108 proton shell can be obtained from two sources: the variation in the partial spontaneous fission half-lives for isotones and the large gap in the alpha Q value for isotonic nuclei of hassium and darmstadtium.
Similar(54)
A nucleus that consists entirely of full neutron or proton shells is said to contain a 'magic' number of protons or neutrons.
Doubly magic nuclei, such as helium-4, oxygen-16, calcium-40, calcium-48, and lead-208, which have both full proton shells and full neutron shells, are especially stable.
From light to heavy nuclei, the proton and neutron shells are filled (separately) in much the same way as electron shells are filled in an atom.
(In a doubly magic nucleus, both the proton and neutron shells are full and therefore relatively stable). Christoph Hinke and colleagues now report measurements of this exotic nucleus in a milestone experiment in which 259 100Snucleiei were produced, a factor of ten more than observed in any previous experiment.
With a full shell of protons, element 114 should lie well within the stable island.
Write better and faster with AI suggestions while staying true to your unique style.
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com