Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Robert K. Smither"'
Autor:
Peter Von Ballmoos, Robert K. Smither, Dante Eduardo Roa, Gerry K. Skinner, Mark A. Beno, Khaliefeh Abu Saleem
Publikováno v:
Experimental Astronomy. 20:201-210
A major goal of the MAX program is to detect and measure gamma rays produced following the nuclear reactions that take place in a supernova explosion. To detect a reasonable number of supernovae, sensitivities of the order of a few times 10-7 γ cm-2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0045276aa01d89c40339a0cb2683c6f4
https://doi.org/10.1007/s10686-005-9019-9
https://doi.org/10.1007/s10686-005-9019-9
Autor:
Robert K. Smither, Y. Y. Shieh, D Roa, P. Caligiuri, X. Zhang, Nilam Ramsinghani, Ke Nie, Jeffrey V. Kuo, Norah Milne, Muthana Al-Ghazi, J. L. Redpath
Publikováno v:
Experimental Astronomy. 20:229-239
The objective of this project is to develop and construct an innovative imaging system for nuclear medicine and molecular imaging that uses photon diffraction and is capable of generating 1–2 mm spatial resolution images in two or three dimensions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44de51759f43da766491810db406cf30
https://doi.org/10.1007/s10686-005-9017-y
https://doi.org/10.1007/s10686-005-9017-y
Autor:
Bernard Hamelin, Robert K. Smither, Anke Lüdge, Pierre Bastie, Vladimir N. Kurlov, D. Borissova, Hubert Halloin, Nickolay Abrosimov, P. von Ballmoos, V. Klemm, H. Riemann
Publikováno v:
Journal of Crystal Growth. 275:e495-e500
Bulk crystals of Ge 1 - x Si x solid solutions grown by modified Czochralski (CZ) technique were used for the production of the diffraction optics elements of the high-energy γ -ray telescope. The mosaic crystals were grown to improve the diffractio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::589d29a6cfd7b2eb5f9036a56da63d62
https://doi.org/10.1016/j.jcrysgro.2004.11.110
https://doi.org/10.1016/j.jcrysgro.2004.11.110
Autor:
Robert K. Smither
Publikováno v:
The College Mathematics Journal. 42:115-117
A post-WWII assignment from the U.S. Navy analyzing data from a test of a harbor mine-detecting algorithm leads to a new construction of the symmedian point.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70e09c9649979c0e290557a28e715582
https://doi.org/10.4169/college.math.j.42.2.115
https://doi.org/10.4169/college.math.j.42.2.115
Autor:
Robert K. Smither
Publikováno v:
The Review of scientific instruments. 85(8)
This paper follows the development of crystal diffraction lenses designed to focus energetic photons. It begins with the search for a solution to the astrophysics problem of how to detect weak astrophysics sources of gamma rays and x-rays. This led t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e7665292bf15145b558db7dacbdf3b8
https://pubmed.ncbi.nlm.nih.gov/25173239
https://pubmed.ncbi.nlm.nih.gov/25173239
Autor:
P. von Ballmoos, Robert K. Smither, Pierre Jean, B. Cordier, P Paltani, G. K. Skinner, Bernard Hamelin, N Abrosimov, G. Di Cocco, J. Evrard, Ph. Laurent, Pierre Bastie, Philippe Laporte, La Gizzi
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 442:438-442
The CLAIRE collaboration is presently preparing the first astronomical observation of a gamma-ray lens. In June 2000, the instrument is to be flown on a stratospheric balloon by the French Space Agency CNES. CLAIRE features a Laue diffraction lens, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89353a6e4a687bf70e950455b1fc5da5
https://doi.org/10.1016/s0168-9002(99)01270-x
https://doi.org/10.1016/s0168-9002(99)01270-x
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 416:493-504
The Toulouse/Argonne collaboration is working on a novel detector for gamma-ray astronomy based on a crystal lens that uses Bragg reflection of Ge crystals to concentrate photons onto a small detector in the image plane. The diffraction efficiency of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08d0de1f1f8f8d350bb5459068c7dae6
https://doi.org/10.1016/s0168-9002(98)00628-7
https://doi.org/10.1016/s0168-9002(98)00628-7
Autor:
Peter von Ballmoos, Tim Graber, Philippe Laporte, Robert K. Smither, Antje Kohnle, J. F. Olive
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 408:553-561
The Argonne/Toulouse collaboration is developing a crystal lens diffraction telescope for use as an astrophysical detector in the energy range of 200–1.3 MeV. The lens consists of eight rings of diffraction crystals that all focus a narrow band of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4e2ba28e5e7d2ff434a505018d53adb
https://doi.org/10.1016/s0168-9002(98)00148-x
https://doi.org/10.1016/s0168-9002(98)00148-x
Autor:
Tim Graber, J.E. Naya, Mohamed Faiz, F. Albernhe, P. von Ballmoos, G. Vedrenne, P.B. Fernandez, Robert K. Smither
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 373:159-164
We present laboratory measurements obtained with a ground-based prototype of a focusing positron-annihilation-radiation telescope developed by the Toulouse-Argonne collaboration. This balloon-borne telescope has been designed to collect 511-keV photo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f916a796eb3db11c8b38715045ccf0ca
https://doi.org/10.1016/0168-9002(95)01476-4
https://doi.org/10.1016/0168-9002(95)01476-4
Autor:
Robert K. Smither, Patricia B. Fernandez, Timothy Graber, Peter von Ballmoos, Juan Naya, Francis Albernhe, G. Vedrenne, Mohamed Faiz
Publikováno v:
Experimental Astronomy. 6:47-56
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7605a8a6abdcdc43042136be15538b2
https://doi.org/10.1007/bf00419257
https://doi.org/10.1007/bf00419257