Zobrazeno 1 - 10
of 77
pro vyhledávání: '"R. R. Winters"'
Publikováno v:
Geological Society of America Abstracts with Programs.
Publikováno v:
Journal of Nuclear Science and Technology. 39:546-549
We have made the first experimental determinations of the astrophysical rates for the 192, 194, 195, 196Pt(n, γ) reactions across the range of temperatures needed for astrophysical models of the s process. Both neutron capture and total cross sectio
Autor:
D. E. Pierce, P. E. Koehler, John A. Harvey, Michael Scott Smith, N. W. Hill, Klaus H Guber, R. R. Winters, Jeffery C. Blackmon, R. R. Spencer, D. W. Bardayan, D. C. Larson, Subramanian Raman, T. A. Lewis
Publikováno v:
Physical Review C. 57:R1558-R1561
We have made improved measurements of the neutron capture and total cross sections for {sup 137}Ba over a sufficiently wide range of energies so that the reaction rate at s-process temperatures (kT=6{endash}23 keV) can be determined solely from the d
Autor:
John A. Harvey, R. R. Spencer, Michael Scott Smith, N. W. Hill, R. R. Winters, P. E. Koehler, Klaus H Guber
Publikováno v:
Nuclear Physics A. 621:258-261
We have made high-resolution neutron capture and transmission measurements on isotopically enriched samples of 134 Ba and 136 Ba at the Oak Ridge Electron Linear Accelerator (ORELA) in the energy range from 20 eV to 500 keV. Previous measurements had
Publikováno v:
Nuclear Physics A. 621:254-257
We have implemented a 4π BaF 2 detector system at the Oak Ridge Electron Linear Accelerator (ORELA) for making (n,γ) measurements of interest to nuclear astrophysics. This new detector will allow us to work with smaller samples and to avoid potenti
Publikováno v:
Nuclear Physics A. 621:266-269
We have completed measurements of the 142,144 Nd(n,γ) cross sections from approximately 20 eV to 200 keV at the Oak Ridge Electron Linear Accelerator (ORELA) using a recently improved C 6 D 6 detector apparatus. 142 Nd is an s -only isotope, i.e. it
Autor:
Lars Q. English, R. R. Winters
Publikováno v:
American Journal of Physics. 65:390-393
The simple harmonic oscillator plays a prominent role in most undergraduate quantum mechanics courses. The study of this system using path integrals can serve to introduce a formulation of quantum mechanics which is usually considered beyond the scop
Publikováno v:
Physical Review Letters. 78:2704-2707
We have made improved measurements of the {sup 142,144}Nd(n,{gamma}) cross sections and investigated the {ital s}-process nucleosynthesis in the Ce-Nd-Sm region. Recently discovered anomalies of the Nd isotopes in silicon carbide grains from the Murc
Autor:
John A. Harvey, R. R. Spencer, Michael Scott Smith, Klaus H Guber, N. W. Hill, R. R. Winters, P. E. Koehler
Publikováno v:
Physical Review C. 54:1463-1477
We have made high-resolution neutron capture and transmission measurements on isotopically enriched samples of {sup 134}Ba and {sup 136}Ba at the Oak Ridge Electron Linear Accelerator (ORELA) in the energy range from 20 eV to 500 keV. Previous measur
Publikováno v:
Physical Review C. 44:657-667
The neutron dispersive optical model potential that was developed previously from an analysis of extensive data on the neutron-{sup 40}Ca system is adapted to the neutron-{sup 40}Ar system by adjusting the central depth of the local equivalent of the