Results 51 to 60 of about 727,683 (238)

Coded-Aperture Compton Camera for Gamma-Ray Imaging

EPJ Web of Conferences, 2016
A novel gamma-ray imaging system is demonstrated, by means of Monte Carlo simulation. Previous designs have used either a coded aperture or Compton scattering system to image a gamma-ray source.
Farber Aaron M., Williams John G.
doaj   +1 more source

Area Entropy and Quantized Mass of Black Holes from Information Theory

Entropy, 2021
In this paper, we present a derivation of the black hole area entropy with the relationship between entropy and information. The curved space of a black hole allows objects to be imaged in the same way as camera lenses.
Dongshan He, Qingyu Cai
doaj   +1 more source

Development of an advanced Compton camera with gaseous TPC and scintillator

, 2004
A prototype of the MeV gamma-ray imaging camera based on the full reconstruction of the Compton process has been developed. This camera consists of a micro-TPC that is a gaseous Time Projection Chamber (TPC) and scintillation cameras.
A. Tada, A. Takada, H. Kubo, H. Nishimura, H. Sekiya, K. Hattori, K. Miuchi, Kubo, Kurfess, Miuchi, Nagayoshi, Ochi, Orito, R. Orito, Schönfelder, T. Nagayoshi, T. Tanimori, Tanimori, Y. Okada   +18 more
core   +1 more source

Development of a Compton Camera for Online Range Monitoring of Laser-Accelerated Proton Beams via Prompt-Gamma Detection

EPJ Web of Conferences, 2014
Presently large efforts are conducted in Munich towards the development of proton beams for bio-medical applications, generated via the technique of particle acceleration from high-power, short-pulse lasers.
Thirolf P.G., Lang C., Aldawood S., v.d. Kolff H.G., Maier L., Schaart D.R., Parodi K.   +6 more
doaj   +1 more source

Design and performance prediction of large-area hybrid gamma imaging system (LAHGIS) for localization of low-level radioactive material

Nuclear Engineering and Technology, 2021
In the present study, a large-area hybrid gamma imaging system was designed by adopting coded aperture imaging on the basis of a large-area Compton camera to achieve high imaging performance throughout a broad energy range (100–2000 keV).
Hyun Su Lee, Jae Hyeon Kim, Junyoung Lee, Chan Hyeong Kim   +3 more
doaj   +1 more source

Soft Gamma-ray Detector for the ASTRO-H Mission

, 2010
ASTRO-H is the next generation JAXA X-ray satellite, intended to carry instruments with broad energy coverage and exquisite energy resolution. The Soft Gamma-ray Detector (SGD) is one of ASTRO-H instruments and will feature wide energy band (40-600 keV ...
Blandford, Roger, Enoto, Teruaki, Fukazawa, Yasushi, Gilmore, Kirk, Kamae, Tuneyoshi, Kataoka, Jun, Kawaharada, Madoka, Kokubun, Motohide, Laurent, Philippe, Lebrun, Francois, Limousin, Olivier, Madejski, Greg, Makishima, Kazuo, Mizuno, Tsunefumi, Nakazawa, Kazuhiro, Ohno, Masanori, Ohta, Masayuki, Sato, Goro, Sato, Rie, Tajima, Hiroyasu, Takahashi, Hiromitsu, Takahashi, Tadayuki, Tanaka, Takaaki, Tashiro, Makoto, Terada, Yukikatsu, Uchiyama, Yasunobu, Watanabe, Shin, Yamaoka, Kazutaka, Yonetoku, Daisuke   +28 more
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Exact reconstruction formulas for a Radon transform over cones [PDF]

, 2013
Inversion of Radon transforms is the mathematical foundation of many modern tomographic imaging modalities. In this paper we study a conical Radon transform, which is important for computed tomography taking Compton scattering into account.
Haltmeier, Markus
core   +1 more source

The ASTRO-H X-ray Observatory

, 2012
The joint JAXA/NASA ASTRO-H mission is the sixth in a series of highly successful X-ray missions initiated by the Institute of Space and Astronautical Science (ISAS).
Aarts, Henri, Aharonian, Felix, Akamatsu, Hiroki, Akimoto, Fumie, Allen, Steve, Anabuki, Naohisa, Angelini, Lorella, Arnaud, Keith, Asai, Makoto, Audard, Marc, Awaki, Hisamitsu, Azzarello, Philipp, Baluta, Chris, Bamba, Aya, Bando, Nobutaka, Bautz, Mark, Blandford, Roger, Boyce, Kevin, Brown, Greg, Cackett, Ed, Chernyakova, Mara, Coppi, Paolo, Costantini, Elisa, de Plaa, Jelle, de Vries, Cor, den Herder, Jan-Willem, DiPirro, Michael, Done, Chris, Dotani, Tadayasu, Doty, John, Ebisawa, Ken, Eckart, Megan, Enoto, Teruaki, Ezoe, Yuichiro, Fabian, Andrew, Ferrigno, Carlo, Foster, Adam, Fujimoto, Ryuichi, Fukazawa, Yasushi, Funk, Stefan, Furuzawa, Akihiro, Galeazzi, Massimiliano, Gallo, Luigi, Gandhi, Poshak, Gendreau, Keith, Gilmore, Kirk, Haas, Daniel, Haba, Yoshito, Hamaguchi, Kenji, Hatsukade, Isamu, Hayashi, Takayuki, Hayashida, Kiyoshi, Hiraga, Junko, Hirose, Kazuyuki, Hornschemeier, Ann, Hoshino, Akio, Hughes, John, Hwang, Una, Iizuka, Ryo, Inoue, Yoshiyuki, Ishibashi, Kazunori, Ishida, Manabu, Ishimura, Kosei, Ishisaki, Yoshitaka, Ito, Masayuki, Iwata, Naoko, Iyomoto, Naoko, Kaastra, Jelle, Kallman, Timothy, Kamae, Tuneyoshi, Kataoka, Jun, Katsuda, Satoru, Kawahara, Hajime, Kawaharada, Madoka, Kawai, Nobuyuki, Kawasaki, Shigeo, Kelley, Richard, Khangaluyan, Dmitry, Kilbourne, Caroline, Kimura, Masashi, Kinugasa, Kenzo, Kitamoto, Shunji, Kitayama, Tetsu, Kohmura, Takayoshi, Kokubun, Motohide, Kosaka, Tatsuro, Koujelev, Alex, Koyama, Katsuji, Krimm, Hans, Kubota, Aya, Kunieda, Hideyo, LaMassa, Stephanie, Laurent, Philippe, Lebrun, Francois, Leutenegger, Maurice, Limousin, Olivier, Loewenstein, Michael, Long, Knox, Lumb, David, Madejski, Grzegorz, Maeda, Yoshitomo, Makishima, Kazuo, Marchand, Genevieve, Markevitch, Maxim, Matsumoto, Hironori, Matsushita, Kyoko, McCammon, Dan, McNamara, Brian, Miller, Eric, Miller, Jon, Mineshige, Shin, Minesugi, Kenji, Mitsuda, Kazuhisa, Mitsuishi, Ikuyuki, Miyazawa, Takuya, Mizuno, Tsunefumi, Mori, Hideyuki, Mori, Koji, Mukai, Koji, Murakami, Hiroshi, Murakami, Toshio, Mushotzky, Richard, Nagano, Hosei, Nagino, Ryo, Nakagawa, Takao, Nakajima, Hiroshi, Nakamori, Takeshi, Nakazawa, Kazuhiro, Namba, Yoshiharu, Natsukari, Chikara, Nishioka, Yusuke, Nobukawa, Masayoshi, Nomachi, Masaharu, O'Dell, Steve, Odaka, Hirokazu, Ogawa, Hiroyuki, Ogawa, Mina, Ogi, Keiji, Ohashi, Takaya, Ohno, Masanori, Ohta, Masayuki, Okajima, Takashi, Okamoto, Atsushi, Okazaki, Tsuyoshi, Ota, Naomi, Ozaki, Masanobu, Paerels, Fritzs, Paltani, Stéphane, Parmar, Arvind, Petre, Robert, Pohl, Martin, Porter, F. Scott, Ramsey, Brian, Reis, Rubens, Reynolds, Christopher, Russell, Helen, Safi-Harb, Samar, Sakai, Shin-ichiro, Sameshima, Hiroaki, Sanders, Jeremy, Sato, Goro, Sato, Kosuke, Sato, Rie, Sato, Yohichi, Sawada, Makoto, Serlemitsos, Peter, Seta, Hiromi, Shibano, Yasuko, Shida, Maki, Shimada, Takanobu, Shinozaki, Keisuke, Shirron, Peter, Simionescu, Aurora, Simmons, Cynthia, Smith, Randall, Sneiderman, Gary, Soong, Yang, Stawarz, Lukasz, Sugawara, Yasuharu, Sugita, Hiroyuki, Sugita, Satoshi, Szymkowiak, Andrew, Tajima, Hiroyasu, Takahashi, Hiromitsu, Takahashi, Tadayuki, Takeda, Shin-ichiro, Takei, Yoh, Tamagawa, Toru, Tamura, Keisuke, Tamura, Takayuki, Tanaka, Takaaki, Tanaka, Yasuo, Tashiro, Makoto, Tawara, Yuzuru, Terada, Yukikatsu, Terashima, Yuichi, Tombesi, Francesco, Tomida, Hiroshi, Tsuboi, Yohko, Tsujimoto, Masahiro, Tsunemi, Hiroshi, Tsuru, Takeshi, Uchida, Hiroyuki, Uchiyama, Hideki, Uchiyama, Yasunobu, Ueda, Yoshihiro, Ueno, Shiro, Uno, Shinichiro, Urry, Meg, Ursino, Eugenio, Wada, Atsushi, Watanabe, Shin, Werner, Norbert, White, Nicholas, Yamada, Shinya, Yamada, Takahiro, Yamaguchi, Hiroya, Yamasaki, Noriko, Yamauchi, Makoto, Yamauchi, Shigeo, Yatsu, Yoichi, Yonetoku, Daisuke, Yoshida, Atsumasa, Yuasa, Takayuki   +223 more
core   +1 more source

Sub-millimeter nuclear medical imaging with high sensitivity in positron emission tomography using beta-gamma coincidences

, 2014
We present a nuclear medical imaging technique, employing triple-gamma trajectory intersections from beta^+ - gamma coincidences, able to reach sub-millimeter spatial resolution in 3 dimensions with a reduced requirement of reconstructed intersections ...
Habs, D., Lang, C., Parodi, K., Thirolf, P. G.   +3 more
core   +1 more source

Multi-Epoch Multiwavelength Spectra and Models for Blazar 3C~279 [PDF]

, 2001
Of the blazars detected by EGRET in GeV gamma rays, 3C 279 is not only the best-observed by EGRET, but also one of the best-monitored at lower frequencies.
A. E. Wehrle, A. Kraus, A. Lawson, A. P. Marscher, A. Sadun, A. Sillanpaa, A. Smale, Baars J. W. M., Bottcher M., Bottcher M., C. M. Raiteri, C. M. Urry, Carrara E. A., Collmar W., Collmar W., D. E. Backman, D. J. Thompson, D. L. Bertsch, Dermer C. D., Duncan W. D., E. C. Ferrara, E. I. Robson, E. Pian, E. Valtaoja, F. Makino, F. Tavecchio, G. Aldering, G. De Francesco, G. Kanbach, G. M. Richter, G. Madejski, G. Nucciarelli, G. Sobrito, G. Tosti, H. Aller, H. Bock, H. Kubo, H. R. Miller, H. Terasranta, H. Ungerechts, Hermsen W., I. McHardy, J. A. Stevens, J. C. Noble, J. Heidt, J. P. McFarland, J. W. Wilson, K. Nilsson, L. Lanteri, L. Maraschi, L. O. Takalo, L. Ostorero, Landolt A. U., M. Aller, M. Bottcher, M. Kidger, M. Koskimies, M. Nikolashvili, M. T. Carini, M. Tornikoski, M. Villata, O. Kurtanidze, P. B. Hall, P. Boltwood, P. Hughes, P. Sreekumar, R. C. Hartman, R. Rekola, Raiteri C. M., Reich W., Reich W., Reuter H.-P., Robson E. I., S. D. Bloom, S. D. Hunter, S. J. Wagner, S. Jogee, S. Katajainen, Shakura N. I., Stecker F. W., Steppe H., T. J. Balonek, T. Kii, T. Pursimo, T. Savolainen, Tornikoski M., U. Lisenfeld, Valtaoja E., W. Collmar, W. Freudling, W. K. Gear, W. N. Johnson, W. Reich, Williams O. R., Y. C. Lin   +94 more
core   +2 more sources