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Imazono, Takashi; Sano, Kazuo*; Suzuki, Yoji; Kawachi, Tetsuya; Koike, Masato
no journal, ,
It is important for studies using polarized soft X-rays to obtain the information on the polarization state of polarized light in advance. No supply of polarizing element practicable in the energy region of 0.7-0.9 keV, which is in the vicinity of the L-edges of 3d transition metals, makes it difficult to evaluate the polarization state of the actual light so far. In order to perform polarization measurement, a soft X-ray ellipsometer equipped with six drive shafts for measurement and three ones for alignment has been designed newly and installed to BL-11 beamline, Evaluation System for Soft X-ray Optical Elements, at SR Center, Ritsumeikan University. A result of reflection measurement carried out as a performance test, the reflection profile, peak position, and reflection width of Mo/SiO
multilayer polarizer, which has been fabricated newly in this study, obtained by the ellipsometer is well agree with those of the existing reflectometer.
Baba, Yuji; Sekiguchi, Tetsuhiro; Shimoyama, Iwao; Honda, Mitsunori; Hirao, Norie; Narita, Ayumi
no journal, ,
no abstracts in English
Kiriyama, Koji; Shibano, Junichi*; Shobu, Takahisa; Suzuki, Kenji*; Nishimura, Suguru*; Kaneko, Hiroshi
no journal, ,
Austenitic stailess steel consist of large grains about 50 to 100 
m in size. Therefore, it is difficult to measure strain of the steel using X-ray diffraction. In this study, a new analysis method applied to X-ray profiles of the steel by using synchrotron white X-ray. The results showed that average strain mapping of austenitic Fe(311), (420), (620), which are similar Young modulus, was suitable to predicted that, althogh strain mappings by using single planes were not reasonable. This suggested that it would be possible to measure strains in small area, for example crack tips, at austenitic stainless steel.
Agui, Akane; Uozumi, Takayuki*; Mizumaki, Masaichiro*; Kaamber, T.*
no journal, ,
no abstracts in English
Mizumaki, Masaichiro*; Agui, Akane; Kawamura, Naomi*; Uozumi, Takayuki*; Murakami, Yoichi*
no journal, ,
no abstracts in English
Honda, Mitsunori; Sekiguchi, Tetsuhiro; Baba, Yuji; Shimoyama, Iwao; Hirao, Norie; Narita, Ayumi
no journal, ,
no abstracts in English
Kataoka, Takashi*; Sakamoto, Yuta*; Yamazaki, Yo*; Fujimori, Atsushi; Takeda, Yukiharu; Okochi, Takuo; Okane, Tetsuo; Saito, Yuji; Yamagami, Hiroshi
no journal, ,
Recently, transition-metal phthalocyanines (Pc) have attracted great interest in many fields of science and technology because of the structural similarities to bio-molecules, their remarkable thermal stability and chemical inertness. One of the most interesting investigations of transition-metal Pc involves their magnetic properties. At low temperature (
10 K), the ferromagnetism in 
-type polycrystals of manganese phthalocyanine (MnPc) has been reported. We have investigated the electronic structure and magnetic interaction in -type polycrystals of the MnPc using X-ray magnetic circular dichroism (XMCD). The XMCD results suggest that the inter-molecular p-d hybridization occurs in the -type polycrystals of MnPc molecules. We will discuss correlation between the inter-molecular interaction and the ferromagnetic coupling in the MnPc molecules.
Okajima, Yuka; Yoneda, Yasuhiro; Saito, Hiroyuki; Nisawa, Atsushi*; Yamamoto, Masaki*; Goto, Shunji*
no journal, ,
no abstracts in English
Hirao, Norie; Baba, Yuji; Sekiguchi, Tetsuhiro; Shimoyama, Iwao; Honda, Mitsunori; Narita, Ayumi
no journal, ,
no abstracts in English
Izumi, Yudai*; Tanaka, Masafumi*; Imazu, Akiko*; Mimoto, Aki*; Nakagawa, Kazumichi*; Tanaka, Masahito*; Agui, Akane; Muro, Takayuki*
no journal, ,
no abstracts in English
Hajima, Ryoichi; Nishimori, Nobuyuki
no journal, ,
no abstracts in English
Ishii, Kenji; Jarrige, I.; Ikeuchi, Kazuhiko; Yoshida, Masahiro; Ishii, Hirofumi*; Hiraoka, Nozomu*; Toyokawa, Hidenori*
no journal, ,
no abstracts in English
Hajima, Ryoichi; Nagai, Ryoji; Iijima, Hokuto; Nishimori, Nobuyuki; Honda, Yosuke*; Muto, Toshiya*; Yamamoto, Masahiro*; Okumi, Shoji*; Nakanishi, Tsutomu*; Kuriki, Masao*
no journal, ,
no abstracts in English
Kawakami, Yasunori; Teraoka, Yuden; Yoshigoe, Akitaka; Harries, J.
no journal, ,
no abstracts in English
Hajima, Ryoichi; Kawata, Hiroshi*; Kasuga, Toshio*; Sato, Kotaro*; Nakamura, Norio*; Sakanaka, Shogo*; Kobayashi, Yukinori*
no journal, ,
no abstracts in English
Hajima, Ryoichi; Shiraga, Takashi*; Nakamura, Norio*; Harada, Kentaro*; Shimada, Miho*; Sakanaka, Shogo*; Kobayashi, Yukinori*
no journal, ,
no abstracts in English
Hajima, Ryoichi; Miyajima, Tsukasa*; Kobayashi, Yukinori*; Sakanaka, Shogo*
no journal, ,
no abstracts in English
Hajima, Ryoichi; Sakanaka, Shogo*; Kobayashi, Yukinori*; Kasuga, Toshio*; Sato, Kotaro*; Kawata, Hiroshi*; Nakamura, Norio*
no journal, ,
no abstracts in English
Umemori, Kensei*; Sakai, Hiroshi*; Sakanaka, Shogo*; Sawamura, Masaru; Shinoe, Kenji*; Takahashi, Takeshi*; Furuya, Takaaki*
no journal, ,
High current operation of ERL excites higher-modes excited in the cavities, which cause current threshold due to beam instability and heat load into the cryomodules. A new shape for the ERL cavity was designed to solve the problems. Niobium single-cell cavities and a 9-cell cavity were fabricated to check manufacture processes surface treatment processes. The vertical test has been in progress to estimate the cavity performance. Another elements such as an input coupler and a HOM damper are also been developing.
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observed by dispersive XAFSOyama, Takahiro; Matsumura, Daiju; Okajima, Yuka; Nishihata, Yasuo; Li, H.-W.*; Ikeda, Kazuki*; Orimo, Shinichi*; Takahashi, Isao*
no journal, ,
Complex bronhydride Mg(B) is known to have lower dehydrogenation temperature by doping Ti chloride or Ti oxide. In this study, we observed real-time local structural transformation around Ti atoms during temperature induced dehydrogenation by dispersive XAFS method. For the case of Ti chloride doping, it is revealed that Ti atoms form bronhydride complex before temperature heating. Adrupt hydrogen desorption from Ti bronhydride makes the dehydrogenation temperature small. On the other hand, in the case of Ti oxide doping, Ti keeps its structure before heating. As temperature is raised, Ti slowly changes to TiB with catalytic behavior for dehydrogenation of Mg(BH).
7 observed by real-time photoelectron spectroscopy using synchrotron radiationYoshigoe, Akitaka; Teraoka, Yuden
no journal, ,
It is known that the adsorption process of O on Si(111)-77 is changed by the translational kinetic energy (E
): trapping-mediated adsorption mechanism occurs at lower than approximately 0.07eV and direct adsorption mechanism is dominate above 0.07eV. The adsorption mechanism is clarified through the E dependence of initial sticking probability, but the relation between time evolution of oxygen bonding configurations and E has not been understood. In this study, the role of E is investigated by real-time photoelectron spectroscopy using synchrotron radiation at room temperature. The time evolution is almost same as 0.03eV when the E is 0.07eV. This result suggests that trapping probability to precursor state dominates the initial adsorption process. On the other hand, the enhancement of formation rates of 
oxygen and the simultaneous creation of both Si
and Si
oxidation states are observed when E changes from 0.07eV to 0.15eV. This result implyes that the probability of direct adsorption for both molecularly chemisorption and dissociatively that increases without the reaction path of precursor states.