Zobrazeno 1 - 10
of 25
pro vyhledávání: '"C. L. Fink"'
Publikováno v:
IEEE Transactions on Nuclear Science. 43:1352-1356
We have evaluated the performance of an illicit substance detection system that performs image reconstruction using the maximum likelihood algebraic reconstruction algorithm, a few number of projections, and relatively coarse projection and pixel res
Autor:
B. P. Curry, C. L. Fink
Publikováno v:
Proceedings of International Conference on Particle Accelerators.
A model of a plasma ion source has been developed that approximates the system of Poisson and Boltzman-Vlasov equations normally used to describe ion sources by an external electric field, a collective electric field due to the charge column, and the
Publikováno v:
AIP Conference Proceedings.
A high-energy neutron detector has been developed using a semiconductor diode fabricated from bulk gallium arsenide wafers with a polyethylene neutron converter layer. Typical thickness of the diode layer is 250 to 300 μm with bias voltages of 30 to
Autor:
C. L. Fink, B. P. Curry
Publikováno v:
AIP Conference Proceedings.
A simple model of the optics of an ion source has been developed and compared with the exact Poisson solution calculated by the computer code SNOW. The model replaces the exact Poisson potential by a Laplacian potential that is calculated by substitu
Autor:
C. L. Fink
Publikováno v:
IEEE Transactions on Nuclear Science. 29:718-721
As part of an ongoing program to improve the fuel-motion capability of the fast-neutron hodoscope, a response model has been developed for the Hornyakbutton detector. The model provides a description of the efficiency and gamma sensitivity of a Horny
Publikováno v:
IEEE Transactions on Professional Communication. :164-167
The use of computer-related devices has resulted in significant improvements in word processing, permitting better accuracy and more efficient turnover of paperwork in an office. A selective combination of these components comprises a computer-assist
Publikováno v:
Physical Review C. 9:965-972
Publikováno v:
IEEE Transactions on Nuclear Science. 26:827-830
Joint LASL/ANL studies of the fuel motion performance capability of a fast-neutron hodoscope have been performed on a 91-pin fuel bundle. Optimization of the neutron detectors used in the hodoscope was also investigated. The neutron detectors tested
Publikováno v:
IEEE Transactions on Nuclear Science. 32:380-383
The fuel-motion measurement capability of the fast-neutron hodoscope has been upgraded by the addition of a 360-detector proton-recoil proportional-counter array, which detects high-energy fission neutrons. The current sensitive amplifier/discriminat
Autor:
Bernard L. Cohen, C. L. Fink
Publikováno v:
Nuclear Instruments and Methods. 57:93-99
The shapes of the current pulses derived from fully depleted surface barrier detectors are observed and compared with theory. Separate measurements are made with low-energy alpha particles entering the front and back surfaces, so the pulses are due t