Generation of hard x rays from transition radiation using high-density foils and moderate-energy electrons
Moran, M. J.
Pincus, C. I.
Kephart, J. O.
Gearhart, R. A.
MetadataShow full item record
In experiments using target consisting of many thin metal foils, we have demonstrated that a narrow, forward-directed cone of transition radiation in the 8- to 60-keV spectral range can be generated by electrons beams with moderate energies (between 100 and 500 MeV). The theory suggests that high-density, moderate-atomic-number metals are the optimum foil materials and that the foil thickness can be chosen to maximize photon production within a desired spectral range. The three targets in the experiments consisted of 10 foils of 1-um-thick gold, 40 foils of 8.5-um stainless steel, and 20 foils of 7.9-um copper. The efficiency with which hard x rays are generated, and the fact that the requisite electron-beam energies are lower by a factor of 5 to 10, make such a radiation source an attractive alternative to synchrotron radiation for applications such as medical imaging, spectroscopy, and microscopy.
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Showing items related by title, author, creator and subject.
Generation of hard x rays from transition radiation using high-density foils and moderate-energy electrons Piestrup, M.A.; Moran, M.J.; Boyers, D.G.; Pincus, C.I.; Kephart, J.O.; Gearhart, R.A.; Maruyama, X.K. (1991-03-01);In experiments using targets consisting of many thin metal foils, we have demonstrated that a narrow, forward-directed cone of transition radiation in the 8- to 60-keV spectral range can be generated by electron beams with ...
Ryzhikov, V.; Grinyov, B.; Piven, L.; Onyshchenko, G.; Sidletskiy, O.; Naydenov, S.; Pochet, T.; Smith, C. (IEEE, 2015-07-01);It is known that solid-state scintillators can be used for detection of both gamma radiation and neutron flux. In the past, neutron detection efficiencies of such solid-state scintillators did not exceed 5-7%. At the same ...
Gladney, Dewey Clinton. (Monterey California. Naval Postgraduate School, 2004-09);Exploring semiconductor lifetime, reliability and performance is a never-ending science for today's modern electronics. One significant problem that affects all of these areas is radiation-induced damage. Making calculations ...