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pro vyhledávání: '"Alan L. Goodman"'
Autor:
Alan L. Goodman
Publikováno v:
Physical Review C. 58:R3051-R3054
Hartree-Fock-Bogoliubov calculations for the $N=Z$ nucleus ${}^{80}\mathrm{Zr}$ give a ground state band with $T=1$ Cooper pairs and an excited band with $T=0$ Cooper pairs. The bands cross at spin $I\ensuremath{\approx}5\ensuremath{\Elzxh},$ providi
Autor:
Alan L. Goodman
Publikováno v:
Nuclear Physics A. 633:223-233
The moment of inertia of hot nuclei is expanded in powers of the rotational frequency ω. The first two expansion coefficients are determined for temperatures above Tc, where the equilibrium shape is spherical at ω = 0. It is shown how the moment of
Autor:
Alan L. Goodman
Publikováno v:
Progress in Particle and Nuclear Physics. 38:173-182
Autor:
Walter M. Zoller, Robert Wasson, Alan L. Goodman, Ralph W Wyndrum, Phil Pfund, F. Raymond Angus
Publikováno v:
Research-Technology Management. 39:26-31
As more and more companies reengineer for revenue growth, R&D's value-added functions gain even greater importance. Successful companies today recognize that R&D is an important part of virtually e...
Autor:
Alan L. Goodman, Frank A. Dodaro
Publikováno v:
Nuclear Physics A. 596:91-121
The role of the nuclear orientation in hot rotating nuclei is explored microscopically. We calculate statistical fluctuations in the orientation of the nucleus 188 Os relative to the spin vector by solving the finite-temperature HFB equation with thr
Autor:
Alan L. Goodman
Publikováno v:
Nuclear Physics A. 592:151-170
All nuclei have a critical temperature Tc1, where the equilibrium shape is spherical if the temperature is above Tc1 and the rotational frequency is zero. For some nuclei with T > Tc1, a slow rotation of the spherical shape generates a prolate equili
Autor:
Alan L. Goodman
Publikováno v:
Physical Review Letters. 73:416-419
For temperatures above [ital T][sub [ital c]] (where the nuclear equilibrium shape is spherical at rotational frequency [omega]=0), a small rotation can generate a prolate equilibrium shape rotating'' around its symmetry axis. This prolate spheroid i
Autor:
Frank A. Dodaro, Alan L. Goodman
Publikováno v:
Nuclear Physics A. 573:47-60
A general formula is derived for the dynamic inertia tensor I (2) of a hot rotating nucleus. This formula includes both mean field and pairing effects within the cranked finite-temperature Hartree-Fock-Bogoliubov formalism. The intrinsic shape can ha
Autor:
Alan L. Goodman
Publikováno v:
Physical Review C. 48:2679-2684
The finite-temperature Hartree-Fock-Bogoliubov cranking equation is solved for [sup 148]Sm. The phase diagram contains three shape transition lines. For certain rotational frequencies, there is oblate noncollective rotation at low temperatures, prola
Autor:
Alan L. Goodman
Publikováno v:
Nuclear Physics A. 542:237-262
Statistical fluctuations in the orientation of the shape relative to the rotation axis are calculated with the j= 13 2 model and the Landau model. The fluctuations are determined with two alternative assumptions: (i) the rotational frequency remains