Zobrazeno 1 - 10
of 38
pro vyhledávání: '"J K, Black"'
Autor:
Richard L. Kelley, Scott Rohrbach, Frederick S. Porter, J. K. Black, Caroline A. Kilbourne, Samuel J. Moseley, Meng P. Chiao, Maurice A. Leutenegger, Megan E. Eckart
Publikováno v:
Review of Scientific Instruments. 91:083110
X-ray calorimeters routinely achieve very high spectral resolution, typically a few eV full width at half maximum (FWHM). Measurements of calorimeter line shapes are usually dominated by the natural linewidth of most laboratory calibration sources. T
Autor:
Drew M. Miles, Wataru Iwakiri, L. Olsen, Ross McCurdy, David S. Nolan, S. J. Mosely, P. Kaaret, Toru Tamagawa, Joanne E. Hill, Leroy Sparr, Megu Kubota, Yang Soong, J. K. Black, Takao Kitaguchi, Keith Jahoda, Takashi Okajima
Publikováno v:
SPIE Proceedings.
The Polarimeter for Relativistic Astrophysical X-ray Sources (PRAXyS) is one of three Small Explorer (SMEX) missions selected by NASA for Phase A study. The PRAXyS observatory carries an X-ray Polarimeter Instrument (XPI) capable of measuring the lin
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 581:755-760
The micropattern time projection chamber (TPC) offers a novel method of imaging the tracks of photoelectrons as a means of X-ray polarimetry with the potential to simultaneously achieve large modulation factors and high quantum efficiency. Measuremen
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 513:639-643
We report the first results from an X-ray polarimeter with a micropattern gas proportional counter using an amorphous silicon active matrix readout. With 100% polarized X-rays at 4.5 keV, we obtain a modulation factor of 0.33 +/- 0.03, confirming pre
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 478:130-134
Micro-well detectors are pixelized imaging sensors that can be inexpensively fabricated in very large arrays. Owing to their intrinsic gain and operation at room temperature, they can be instrumented at very low power, per unit area, making them valu
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 477:55-58
The micro-well detector is a gas-proportional counter similar to the CAT (Bartol et al., J. Phys. III 6 (1996) 337) and WELL detectors (Bellazzini et al., Nucl. Instr. and Meth. A 423 (1999) 125). The micro-well is a cylindrical hole formed in the po
We report photoelectron track length distributions between 3 and 8 keV in gas mixtures of Ne+CO2+CH3NO2 (260:80:10 Torr) and CO2+CH3NO2 (197.5: 15 Torr). The measurements were made using a negative ion time projection chamber (NITPC) at the National
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec77715ea35b201c287bab2c3dc0c694
Autor:
J. Sandoval, J. Sena, D. A. Whitehouse, R. Manweiler, X.L. Tu, R. Fisk, A. Gonzales, Charles C. H. Jui, Gary E. Hogan, Staffan Carius, R. E. Tribble, Y. Zhang, L. E. Piilonen, V. Armijo, C.A. Wilkinson, P. M. Nord, M. D. Cooper, M. A. Kroupa, J. K. Black, K. M. Stantz, S. Stanislaus, D. D. Koetke, J.J. Szymanski, R. E. Mischke, G. Suazo, R. D. Bolton, C. Espinoza, G.W. Hart, C. A. Gagliardi, S. Schilling
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 417:24-49
A design for extremely low mass, high-resolution multiwire proportional chambers (MWPC) was achieved by the MEGA collaboration in its experiment to search for the lepton family number violating decay μ→eγ. To extend the present branching ratio li
Autor:
R. Nagarajan, Marc A. Ilies, Tiffany V. Sommers, Li Ching He, Adrian Kizewski, Vishnu Dutt Sharma, David B. Robinson, George M. Buffleben, Michael S. Kent, Ronald N. Zuckermann, Hary Razafindralambo, Christophe Blecker, Michel Paquot, P. Lo Nostro, N. Peruzzi, L. Giustini, P. Baglioni, M. S. Hoffmann, R. Haschick, M. Klapper, K. Müllen, Tarek R. Farhat, Claus D. Eisenbach, Nikolay Bulychev, Klaus Dirnberger, Bart Dervaux, Filip E. DuPrez, Vitali Zubov, Yuki Terayama, Moriya Kikuchi, Koji Mitamura, Motoyasu Kobayashi, Norifumi L. Yamada, Atsushi Takahara, Thomas J. Lane, Mona Marie Knock, Laurie S. Sanii, Min Soo Lim, Katelyn J. Smiley, Ellen S. Gawalt, A. Kohut, L. Sieburg, S. Vasylyev, O. Kudina, I. Hevus, S. Stafslien, J. Daniels, V. Kislenko, A. Voronov, Markus Biesalski, Kamlesh Shroff, Pieter Samyn, Manik Mandal, Michal Kruk, Ramjee Balasubramanian, Zaharoula M. Kalaitzis, Thorsteinn Adalsteinsson, E. V. Fette, A. Pham, J. K. Black, L. E. Tracy, C. P. Roche, J. B. Pesavento, R. J. K. Udayana Ranatunga, Chuong T. Nguyen, Chi-cheng Chiu, Wataru Sh
Autor:
Jelila S. Mohammed, Keith Jahoda, A. Davies, Robert G. Baker, K. Montt de Garcia, A. Weaver, Jean H. Swank, Wayne H. Baumgartner, David S. Nolan, J. K. Black, J. D. Cantwell, N. K. Dobson, R. L. Foxwell, P. L. Dickens, A. S. Francomacaro, P. Kaaret, R. O. Hampshire, Kyle Gregory, M. A. Sampson, M. J. Singer, T. Hwang, Murzy D. Jhabvala, Joanne E. Hill, E. M. Caldwell, Toru Tamagawa, S. J. Lehtonen, S. N. Yerushalmi, M. J. Browne, James Sanders, A. Hayato, Daniel Gall, A. B. Desai, J. J. Xu, R. Russell, S. Griffiths, N. F. Martin, K. Simms, A. Morell
Publikováno v:
SPIE Proceedings.
The Gravity and Extreme Magnetism Small Explorer (GEMS) will realize its scientific objectives through high sensitivity linear X-ray polarization measurements in the 2-10 keV band. The GEMS X-ray polarimeters, based on the photoelectric effect, provi