Zobrazeno 1 - 10
of 15
pro vyhledávání: '"K. H. Lokan"'
Publikováno v:
Computers & Chemistry. 3:89-94
A computer-based system for the study of transient light absorption is described. It automatically subtracts and measures the quiescent light level, digitizes and stores the transient absorption, and monitors the absorption at a reference wavelength.
Publikováno v:
Physical Review Letters. 35:1215-1219
We have observed more than fifty peaks between 400 keV and 4 MeV in photoneutron spectra of $sup 208$Pb. Transitions occur to the ground state and first two excited states of $sup 207$Pb from discrete absorption features, some of which are less than
Publikováno v:
Canadian Journal of Physics. 53:795-801
Photoneutron energy distributions from a target of liquid neon have been measured at 90° by time of flight for bremsstrahlung endpoint energies increasing in 1 MeV steps from 19 to 32 MeV. The differential ground state cross section for the major (9
Publikováno v:
Canadian Journal of Physics. 54:1178-1189
The 19F(γ,n) reaction was studied by irradiating teflon with bremsstrahlung of energy increasing from 13 MeV to 21 MeV in 1 MeV steps. Photoneutron spectra were measured by the time-of-flight method. Excited states of 19F at 12.10, 12.38, 13.82, and
Publikováno v:
Canadian Journal of Physics. 55:428-433
Photoneutron energy spectra from 7Li have been measured by time-of-flight methods, for bremsstrahlung end-point energies increasing in 2 MeV steps from 13 to 25 MeV. The ground-state and approximate first-excited-state differential cross sections at
Autor:
K H Lokan
Publikováno v:
Proceedings of the Physical Society. 73:697-704
The energy distributions and absolute yields of photoprotons of energy greater than 10 MeV from silver have been measured for maximum bremsstrahlung energies between 16 and 32 MeV. The derived cross section for this component, which may be identified
Publikováno v:
Canadian Journal of Physics. 51:1176-1181
Photoneutron energy spectra from 40Ar have been measured at bremsstrahlung end-point energies from 13 to 23 MeV in 1 MeV steps. The differential cross section at 90° for the reaction 40Ar(γ, n0)39Ar revealed some 26 previously unreported excited st
Publikováno v:
Nuclear Instruments and Methods. 23:141-146
The Harwell 30 MeV electron linear accelerator has been modified to provide electron bursts of 10 nsec duration at a repetition rate of 250 p.p.s. and peak current 0.2 A. A neutron time-of-flight spectrometer has been set up to cover the neutron ener
Publikováno v:
Canadian Journal of Physics. 50:1689-1696
Photoneutron distributions from 14N have been obtained by time-of-flight methods, for bremsstrahlung end-point energies increasing in 2 MeV steps from 15.5 to 29.5 MeV. A large part of the neutron yield is associated with the sequential decay of 14N
Publikováno v:
Physical Review Letters. 25:114-116
In a time-of-flight study of $^{14}\mathrm{N}$ photoneutrons in which neutron energy spectra were obtained at different bremsstrahlung end-point energies between 15.5 and 29.5 MeV, de-excitation neutrons from excited states of $^{13}\mathrm{C}$ were