Zobrazeno 1 - 10
of 32
pro vyhledávání: '"J. R. Birkelund"'
Publikováno v:
Physical Review Letters. 37:885-888
We report a correlation between the kinetic energy loss and nucleon diffusion for Kr- and Xe-induced reactions on heavy targets. Although this correlation suggests that these two phenomena occur on the same general time scale, the rate of kinetic ene
Autor:
H. J. Wollersheim, D. Hilscher, W. U. Schröder, J. R. Birkelund, W. W. Wilcke, J.R. Huizenga, H. Freiesleben
Publikováno v:
Physical Review C. 24:2114-2126
Projectilelike reaction products from the /sup 209/Bi+/sup 136/Xe reaction were studied at a laboratory bombarding energy of 1422 MeV. The fragments were identified by atomic number and their kinetic energies and angular distributions were measured u
Autor:
J. C. Browne, M. W. Johnson, D. G. Perry, J. R. Birkelund, W. U. Schröder, W. W. Wilcke, D. Hilscher, J.R. Huizenga
Publikováno v:
Physical Review C. 21:2019-2024
Time distributions of fragments from delayed fission after muon capture have been measured for muonic /sup 235/U, /sup 238/U, /sup 237/Np, /sup 239/Pu, and /sup 242/Pu. Comparison of these data with previously measured lifetimes using muon decay elec
Autor:
J. R. Birkelund, A. D. Hoover, A. C. Mignerey, W. U. Schröder, W. W. Wilcke, V. E. Viola, K.L. Wolf, J.R. Huizenga
Publikováno v:
Physical Review C. 22:128-147
A previous study of the strongly damped reaction $^{209}\mathrm{Bi}$ + $^{136}\mathrm{Xe}$ at 1130 MeV has been extended to the lower bombarding energy of 940 MeV. With the same experimental technique, angular, energy, and atomic charge distributions
Publikováno v:
Physical Review Letters. 40:1123-1127
A simple dynamical model is shown to reproduce heavy-ion fusion excitation functions over a wide mass and energy range. The trajectory calculations employ the proximity nuclear potential and the proximity one-body nuclear friction. The importance of
Autor:
J. R. Birkelund, J.R. Huizenga
Publikováno v:
Physical Review C. 17:126-130
The internuclear potential determined from published fusion barrier parameters is compared with the proximity potential of Blocki et al. Discussion is given of the uncertainties introduced into the data analysis by the effects of friction and errors
Autor:
V. E. Viola, H. Breuer, K.L. Wolf, J. R. Birkelund, B. G. Glagola, Alice Mignerey, W. U. Schröder, D. Hilscher, W. W. Wilcke, J.R. Huizenga
Publikováno v:
Physical Review Letters. 45:509-512
Yields for specific Z and A have been measured for projectilelike fragments produced in the reaction of 8.3-MeV/u /sup 56/Fe ions with targets of /sup 56/Fe, /sup 165/Ho, and /sup 238/U. Variances of the isobaric charge distributions sigma/sub Z/ /su
Autor:
Alice Mignerey, D. Hilscher, W. W. Wilcke, H. Breuer, W. U. Schröder, J. R. Birkelund, B. G. Glagola, V. E. Viola, K.L. Wolf, J.R. Huizenga
Publikováno v:
Physical Review C. 22:122-127
Results of recent nuclear reaction studies on the /sup 209/Bi+/sup 56/Fe system are analyzed in order to investigate the cross sections for production of spontaneously fissioning species with 90 < or = Z < or = 100. This reaction is nearly identical
Publikováno v:
Physical Review C. 32:214-221
Angular correlations of fragments both in and out of the reaction plane from 292-MeV $^{20}\mathrm{induced}$ fission of $^{165}\mathrm{Ho}$, $^{181}\mathrm{Ta}$, $^{197}\mathrm{Au}$, $^{209}\mathrm{Bi}$, and $^{238}\mathrm{U}$ have been measured. The
Autor:
J. R. Birkelund, K.L. Wolf, Alice Mignerey, V. E. Viola, J.R. Huizenga, D.G. Raich, W.U. Schroeder
Publikováno v:
Physical Review C. 29:158-173
Results are presented for the damped reaction /sup 144/Sm+/sup 84/Kr at laboratory energies of 470, 595, and 720 MeV, corresponding to 1.2, 1.6, and 1.9 times the Coulomb barrier energy, respectively. Correlations between angle, kinetic-energy loss,