

A137306


Related to A018226 and A018227: due to the stable element 118 (last term in A018227) this is submitted as a suggested new observed list with 459 as a probable next new atomic weight stable island.


0



2, 8, 20, 28, 50, 83, 118, 126, 168, 194, 298
(list;
graph;
refs;
listen;
history;
text;
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OFFSET

1,1


COMMENTS

"These are crucial to the notion of an 'island of stability', which Glenn Seaborg espoused."


REFERENCES

Y. Oganessian, J. Phys. G: Nucl. Part. Phys, 2007, iop.org
Rosenfeld, L. (1948). Nuclear Forces. Interscience Publishers, New York, xvii.
G. T. Seaborg  Contemporary Physics, 2004, informaworld.com


LINKS

Table of n, a(n) for n=1..11.


FORMULA

Roughly a(n) = Floor[1.53*a(n1)]


MATHEMATICA

(* nuclear radius visualization from Rosenfeld*) Clear[r, A, r0, p, n, m] A[p_, n_] := If[p == 0, 1, p + n] r0 = 1.3214405*10^(13); r[p_, n_] := r0*( 1 + 0.8*(n/A[p, n])^2  0.3/A[p, n]^(1/3) + 0.010*p^2/A[p, n]^(4/3)) a0 = Table[Table[r[p, n], {n, p, Floor[2*p]}], {p, 0, 120}]; ListPlot[Flatten[a0]]


CROSSREFS

Cf. A018226, A018227.
Sequence in context: A230434 A018226 A162626 * A110856 A048041 A217513
Adjacent sequences: A137303 A137304 A137305 * A137307 A137308 A137309


KEYWORD

nonn,obsc,uned


AUTHOR

Roger L. Bagula, Apr 20 2008


EXTENSIONS

Definition not clear to me.  N. J. A. Sloane, Apr 25 2008


STATUS

approved



