Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Kyoungwon Kim"'
Publikováno v:
IEEE Transactions on Nuclear Science. 66:2329-2332
The effect of selenium in CdZnTe was investigated by characterizing the Cd0.9Zn0.1Te0.98Se0.02 crystal. The bandgap of Cd0.9Zn0.1Te0.98Se0.02 is smaller than Cd0.9Zn0.1Te. In addition, its value in ingot follows the zinc-segregation tendency than tha
Autor:
George Mahler, Kyoungwon Kim, Ge Yang, Anwar Hossain, G. De Geronimo, Giuseppe S. Camarda, Deidra Hodges, Emerson Vernon, Ralph B. James, Aleksey E. Bolotnikov, L. Ocampo Giraldo, Jack Fried
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 954:161036
Arrays of position-sensitive virtual Frisch-grid CdZnTe (CZT) detectors offer an economical approach to making high efficiency and high energy resolution gamma cameras for spectroscopy and imaging of radioactive sources. There are many application ar
Autor:
Y. Nykonyuk, P. M. Fochuk, O. Kopach, Kyoungwon Kim, Eduard Belas, I. Nakonechnyi, Ge Yang, A. E. Bolotnikov, O. Panchuk, Roman Grill, Ralph B. James
Publikováno v:
IEEE Transactions on Nuclear Science. 62:1239-1243
We observed a novel unanticipated effect in CdTe, ${\bf Cd}_{1-{\bf x}}{\bf Zn}_{\bf x}{\bf Te}$ and ${\bf Cd}_{1-{\bf x}}{\bf Mn}_{\bf x}{\bf Te}$ crystals whilst we were measuring the dependences of several electrical properties (e.g., specific con
Autor:
Anwar Hossain, Aleksey E. Bolotnikov, Shinhaeng Cho, Chansun Park, Ralph B. James, Hong Taekwon, Pilsu Kim, Kyoungwon Kim, Jinseo Lee
Publikováno v:
Journal of the Korean Physical Society. 66:1761-1765
CdMnTe(CMT) is a promising alternative material for use as a room-temperature radiation detector. Frisch-grid detectors have a simple configuration and outstanding spectral performance compared with other single-carrier collection techniques. The ene
Publikováno v:
2017 IEEE International Magnetics Conference (INTERMAG).
This paper describes the use of an analytical approach using a 3D analytical method to calculate the eddy current loss of a permanent magnet linear synchronous generator (PMLSG) considering tapped holes in permanent magnet movers.
Autor:
Jan Franc, P. M. Fochuk, Ralph B. James, Giuseppe S. Camarda, Aleksey E. Bolotnikov, Kyoungwon Kim
Publikováno v:
Journal of Crystal Growth. 390:1-4
The origin and nature of star-shaped prismatic punching defects (PPDs) were analyzed by white-beam X-ray diffraction topography (WBXDT) and photoluminescence (PL) measurements. PPDs were observed in CdTe-based compounds that had Te-rich secondary pha
Publikováno v:
Research on Chemical Intermediates. 40:97-103
Pure ZnO and Ga (3 % w/w) and Ag (3 % w/w)-doped ZnO nanowires (NWs) have been grown by use of the hot-walled pulse laser deposition technique. The doping characteristics of Ga and Ag in ZnO NWs were analyzed by use of photoluminescence (PL) and X-ra
Autor:
Alexander O. Govorov, Nicholas A. Kotov, Hui Zhang, Jai Il Park, Bongjun Yeom, Huanan Zhang, Kyoungwon Kim
Publikováno v:
Nano Letters. 13:5277-5283
Chirality of plasmonic films can be strongly enhanced by three-dimensional (3D) out-of-plane geometries. The complexity of lithographic methods currently used to produce such structures and other methods utilizing chiral templates impose limitations
Autor:
Ralph B. James, Anwar Hossain, P. M. Fochuk, Aleksey E. Bolotnikov, Yonggang Cui, Kyoungwon Kim, Utpal N. Roy, Giuseppe S. Camarda, Balaji Raghothamachar, Ge Yang
Publikováno v:
Crystal Research and Technology. 48:221-226
We conducted low-temperature annealing experiments at temperatures slightly above and below the melting point of Te to clarify the effects of the state of Te inclusions (solid or liquid) upon the formation of ‘star-like’ defects in Cd-annealed Cd
Autor:
Ralph B. James, Giuseppe S. Camarda, Kyoungwon Kim, Jonghak Choi, Yonggang Cui, Anwar Hossain, Aleksey E. Bolotnikov, Ge Yang
Publikováno v:
Journal of the Korean Physical Society. 62:623-627
We investigated trap levels in detector-grade CdZnTe (CZT) material grown by using three different methods, viz, the Bridgman, traveling heater method (THM), and high-pressure Bridgman method (HPB), by current deep-level transient spectroscopy (I-DLT