Zobrazeno 1 - 10 of 11 pro vyhledávání: '"C. D. Eberhard"'
1
Photoexcitation of nuclear isomers by (γ,γ’) reactions
Autor: F. J. Agee, D.A. Whittaker, Carl B. Collins, James Carroll, David P. Davis, T. W. Sinor, D. G. Richmond, J. A. Anderson, M. J. Byrd, Peter P. Antich, Y. Paiss, K. N. Taylor, C. D. Eberhard, E. C. Scarbrough, Marc Litz, W. L. Hodge, K. G. Kerris, G. A. Huttlin
Publikováno v: Physical Review C. 43:1238-1247
Photoexcitation of the isomers of 19 nuclides was examined in this work. Four accelerators were used as sources of bremsstrahlung to expose the samples and end-point energies covered the range from 0.5 to 11 MeV. No evidence was found for nonresonant
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fcbfff01d27741163359a07a2860b1b8
https://doi.org/10.1103/physrevc.43.1238
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2
Airborne target identification from low-crossrange-resolution ISAR imagery
Autor: August W. Rihaczek, Thomas K. Samec, C. D. Eberhard, Hiroshi H. Agravante, Stephen J. Hershkowitz, E. Perahia, R. L. Mitchell, Bruce I. Hauss, Karen M. Luebkemann, Sridhar Lakshmanan, Thomas M. Wagner, Donald Arnush
Publikováno v: SPIE Proceedings.
In a target-rich battlefield environment, a shipboard or an airborne radar must maintain situational awareness while tracking and identifying targets. Often the opportunity to dwell on each target long enough for confident identification via high res
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0da4d5049819b98641d32bbe51242744
https://doi.org/10.1117/12.257215
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3
The gamma-ray laser—status and issues in 1988
Autor: J. A. Anderson, C. D. Eberhard, Carl B. Collins, James Carroll, J. J. Coogan, Farzin Davanloo, M. J. Byrd
Publikováno v: Laser and Particle Beams. 7:357-367
Efforts to demonstrate the feasibility of a gamma-ray laser scored major advances in 1987. Culminating with the successes in optically pumping the first of the 29 actual candidate isomers, priority issues were brought into better focus by the lessons
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::65d1eb46bf10f52c44cff1edb7c02c68
https://doi.org/10.1017/s026303460000731x
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5
Activation of115Inmby single pulses of intense bremsstrahlung
Autor: Carl B. Collins, W. L. Hodge, R. J. Peterson, C. D. Eberhard, Y. Paiss, J. A. Anderson
Publikováno v: Physical Review C. 38:1852-1856
A new technique has been recently described for the absolute calibration of intense sources of pulsed radiation in the 0.2--1.5 MeV range of photon energies. An activation technique, it depended upon the storage of samples of the irradiating spectrum
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e795a889ebf7486e0fb9411a135294ad
https://doi.org/10.1103/physrevc.38.1852
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6
Nuclear photoactivation cross sections for short-lived isomeric states excited with a 6 MeV linac
Autor: James Carroll, J. A. Anderson, C. D. Eberhard, Carl B. Collins, P.P. Antich, E. C. Scarbrough, M. J. Byrd
Publikováno v: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. :452-454
Photoactivation cross sections for short-lived (T12 < 20 s) isomeric states in 167Er, 79Br, 191Ir, 183W, 197Au, 77Se, 137Ba and 89Y were determined using bremsstrahlung from a 6 MeV medical therapy linac. A portable NaI(Tl) spectrometer and pneumatic
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d9e593fb71d3ca3a649e102813a13620
https://doi.org/10.1016/0168-583x(89)91018-5
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7
Depopulation of the isomeric stateTam180by the reactionTam180(γ,γ′)Ta180
Autor: C. D. Eberhard, Carl B. Collins, J. A. Anderson, J. W. Glesener
Publikováno v: Physical Review C. 37:2267-2269
The irradiation of an enriched sample of $^{180}\mathrm{Ta}^{m}$ with bremsstrahlung from a linear accelerator having an end-point energy of 6 MeV has excited a strong channel for the reaction $^{180}\mathrm{Ta}^{m}(\ensuremath{\gamma},{\ensuremath{\
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b2bf7023cf53d55e7d951e6dd7e4461a
https://doi.org/10.1103/physrevc.37.2267
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8
Progress in the gamma-ray laser program at Texas 3: Observation of nuclear fluorescence
Autor: C. B. Collins, J. A. Anderson, C. D. Eberhard, Y. Paiss
Publikováno v: AIP Conference Proceedings.
The nuclear analog of the ruby laser is shown in Fig. 1. It embodies the simplest concepts for a gamma‐ray laser. Not surprisingly, the greatest rate of progress has occurred in this direction. Studies aimed at upgrading the nuclear database have y
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6558e3a88199888e5e35856833cd34b6
https://doi.org/10.1063/1.37509
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9
Modeling of ion molecule reactions at high pressures
Autor: C. B. Collins, J. Stevefelt, C. D. Eberhard
Publikováno v: AIP Conference Proceedings.
A model of the charge transfer reactions of He2+ based on the formation of a reaction complex was formulated. Both coherent and incoherent collisional processes of excitation and deexcitation of the complex were included. The overall reaction rates f
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a58e3b9dfc82684c279f8a1b374c9c44
https://doi.org/10.1063/1.35940
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