The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Isotones

atoms of different chemical elements with the same number of neutrons in their nuclei. The following are examples of isotones: the atoms and , whose nuclei contain three neutrons each. Among these isotones, ⁵He decays almost instantaneously, ⁶Li is stable, and ⁷Be and ⁸B are radioactive—they have half-lives of 43 days and 0.8 sec, respectively.

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References in periodicals archive

The existence of identical bands in the isotones [sup.192]Hg(SD1) and [sup.194]Pb(SD1) are investigated.

Properties of nuclear superdeformed rotational bands in A ~ 190 mass region

The N = 90 isotones [sup.154]Gd [15,16] and [sup.156]Dy [17,18] were seen to provide good example to transition from spherical to axially deformed.

Reexamination of nuclear shape transitions in gadolinium and dysprosium isotopes chains by using the geometric collective model

Nuclei located at or very close to the first order transition were the N=90 isotones 150Nd, 152Nd, 154Nd and 156Nd.

A theoretical description of U(5)-SU(3) nuclear shape transitions in the interacting boson model

It is concluded that the N=86 isotones SD nuclei have identical supershell structures:

Nucleus Yrast band [sup.150.sub.64]Gd [pi](3)[bar.0][[(4).sup.10][(5).sup.12]] [([i.sub.13/2]).sup.2] [sup.150.sub.65]Tb [pi](3)[bar.0][[(4).sup.10][(5).sup.12]] [([i.sub.13/2]).sup.3] [sup.152.sub.66]Dy [pi](3)[bar.0][[(4).sup.10][(5).sup.12]] [([i.sub.13/2]).sup.4] Nucleus Excited band [sup.150.sub.64]Gd [pi](3)[bar.1][[(4).sup.10][(5).sup.12]] [([i.sub.13/2]).sup.3] [sup.150.sub.65]Tb [pi](3)[bar.1][[(4).sup.10][(5).sup.12]] [([i.sub.13/2]).sup.4] [sup.152.sub.66]Dy [pi](3)[bar.1][[(4).sup.10][(5).sup.12]] [([i.sub.13/2]).sup.5] 6 Identical bands in the isotones nuclei N=86

The difference in [gamma]-ray energies [DELTA][E.sub.[gamma]] between transition in the two pairs of N=86 isotones (excited 151Tb (SD-2), yrast [sup.152]Dy (SD-1)) and (excited [sup.150]Gd (SD-2), yrast [sup.151]Tb (SD-1)) were calculated.

Identical bands and [DELTA]I = 2 staggering in superdeformed nuclei in A ~ 150 mass region using three parameters rotational model