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SπRIT: A time-projection chamber for symmetry-energy studies
Shane, R.,McIntosh, A.B.,Isobe, T.,Lynch, W.G.,Baba, H.,Barney, J.,Chajecki, Z.,Chartier, M.,Estee, J.,Famiano, M.,Hong, B.,Ieki, K.,Jhang, G.,Lemmon, R.,Lu, F.,Murakami, T.,Nakatsuka, N.,Nishimura, M Elsevier 2015 Nuclear Instruments & Methods in Physics Research. Vol.784 No.-
<P><B>Abstract</B></P> <P>A time-projection chamber (TPC) called the SAMURAI Pion-Reconstruction and Ion-Tracker (SπRIT) has recently been constructed at Michigan State University as part of an international effort to constrain the symmetry-energy term in the nuclear Equation of State (EoS). The SπRIT TPC will be used in conjunction with the SAMURAI spectrometer at the Radioactive Isotope Beam Factory (RIBF) at RIKEN to measure yield ratios for pions and other light isospin multiplets produced in central collisions of neutron-rich heavy ions, such as <SUP>132</SUP>Sn+<SUP>124</SUP>Sn. The SπRIT TPC can function both as a TPC detector and as an active target. It has a vertical drift length of 50cm, parallel to the magnetic field. Gas multiplication is achieved through the use of a multi-wire anode plane. Image charges, produced in the 12096 pads, are read out with the recently developed Generic Electronics for TPCs.</P>
대만 등줄쥐 (Apodemus agrarius insulaemus)의 유전자다양성: 미토콘드리아 DNA Cytochrome b 유전자 염기서열 분석
고흥선, 장경희, Pei Jen Shaner, 이배근, 양병국, 허선욱 忠北大學校部設基礎科學硏究所 2012 自然科學硏究 Vol.26 No.-
Taiwan의 섬 아종인 A. a. insulaemus의 유전자다양성을 연구하기 위하여, 동아시아의 18개 지역에서 잡은 A. agrarius 네 아종 45 표본의 cytochrome b 염기서열 (1,140 bp)을 얻은 후에, 이들 염기서열들 을 GenBank에서 얻은 등줄쥐 여섯 아종의 염기서열과 비교하였다. Apodemus agrarius에서 두 개의 clades가 파악되었는데, 하나는 대만 clade (섬아종인 insulaemus)이고, 다른 하나는 대륙 clade (유라시 아 대륙의 다섯 아종인 coreae, mantchuricus, pallidior, ningpoensis, and agrarius)였다. 따라서 대 만의 A. a. insulaemus는 유라시아의 대륙 아종들과 유전적인 차이를 보인다고 규명하였다. 또한 대만의 insulaemus는 등줄쥐내의 phylogroup으로 밝혀졌음으로, 본 연구결과들을 확인하기 위한 핵 및 미토콘드리 아 DNA marker를 이용한 분석이 필요하게 되었다.
Epsilon-Near-Zero Strong Coupling in Metamaterial-Semiconductor Hybrid Structures
Jun, Young Chul,Reno, John,Ribaudo, Troy,Shaner, Eric,Greffet, Jean-Jacques,Vassant, Simon,Marquier, Francois,Sinclair, Mike,Brener, Igal American Chemical Society 2013 Nano letters Vol.13 No.11
<P>We present a new type of electrically tunable strong coupling between planar metamaterials and epsilon-near-zero modes that exist in a doped semiconductor nanolayer. The use of doped semiconductors makes this strong coupling tunable over a wide range of wavelengths through the use of different doping densities. We also modulate this coupling by depleting the doped semiconductor layer electrically. Our hybrid approach incorporates strong optical interactions into a highly tunable, integrated device platform.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/nalefd/2013/nalefd.2013.13.issue-11/nl402939t/production/images/medium/nl-2013-02939t_0007.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nl402939t'>ACS Electronic Supporting Info</A></P>
Terahertz near-field vectorial imaging of subwavelength apertures and aperture arrays.
Knab, J R,Adam, A J L,Nagel, M,Shaner, E,Seo, M A,Kim, D S,Planken, P C M Optical Society of America 2009 Optics express Vol.17 No.17
<P>We present measurements of the complete terahertz (THz) electric near-field distribution, E(x), E(y) and E(z), in both the time- and frequency-domains, for subwavelength apertures and subsections of subwavelength aperture arrays. Measuring the individual components of the THz near-field with subwavelength spatial resolution, as they emerge from these structures, illustrates how the field interacts with the apertures. We observe the small but measurable y- and z-components of the electric field for both single apertures and arrays. Resonant contributions, attributed to Bloch modes, are detected and we observe the presence of a longitudinal field component, E(z), within the different array apertures, which can be attributed to a diffractive effect. These measurements illustrate in detail the individual THz field components emerging from subwavelength apertures and provide a direct measure of two important mechanisms that contribute to the net transmission of light through arrays.</P>