Zobrazeno 1 - 10
of 37
pro vyhledávání: '"S. C. Fultz"'
Publikováno v:
Physical Review C. 10:608-619
Publikováno v:
Physical Review C. 10:2221-2236
The photoneutron cross section for He3 has been measured from threshold to 30 MeV using monochromatic photons from positron annihilation in flight. The cross section reaches its maximum of about 0.95 mb at about 15 MeV. Several distinct structures ar
Publikováno v:
Physical Review. 121:866-870
The energy spread and yields of nearly monoenergetic photons of various energies produced by the annihllation in flight of relativistic positrons were experimentally determined using a 6-in.-long by 5-in.-diameter NaI(TI) crystal spectrometer. Photon
Publikováno v:
Physical Review Letters. 15:976-979
Publikováno v:
Physical Review. 130:1482-1491
The fission cross section of U/sup 235/ was investigated with high resolution between 0.03 and 80 ev using the neutron time-of-flight facility at the Livermore linear electron accelerator. Normalization of the relative cross sections in the thermal r
Publikováno v:
Physical Review C. 4:1673-1679
Nearly monochromatic photons from positron annihilation in flight have been used to measure photoneutron cross sections for $^{23}\mathrm{Na}$ and $^{25}\mathrm{Mg}$ in the giant-resonance region. The shape of the giant resonance of each of these nuc
Publikováno v:
Physical Review. 148:1198-1205
The photoneutron cross sections for ${\mathrm{I}}^{127}$ and ${\mathrm{Pr}}^{141}$ have been measured with about 170- and 320-keV photon energy resolution, using monoenergetic photons obtained from annihilation in flight of positrons. The ($\ensurema
Publikováno v:
Nuclear Instruments and Methods. 14:337-342
The energy spread of the photon line produced by annihilation of 15-MeV positrons in a thin LiH target has been measured. Positrons are produced by bombarding a Ta target with 10-MeV electrons from a linear accelerator. The positrons are accelerated
Publikováno v:
Physical Review. 137:B326-B331
The corona-type spark chamber has been adapted for detection of fission fragments and has been used as the detector for neutron-induced fission cross-section measurements of ${\mathrm{Am}}^{241}$. Measurements were made over the neutron energy range
Publikováno v:
Physical Review. 121:605-609
The differential cross section at 0\ifmmode^\circ\else\textdegree\fi{} for the annihilation in flight of 8.5-Mev positrons has been measured. The positrons were created in a thick Ta target which was bombarded by 20-Mev electrons from a linear accele